-/*\r
- * Copyright (C) 2001, 2002 The Mir-coders group\r
- *\r
- * This file is part of Mir.\r
- *\r
- * Mir is free software; you can redistribute it and/or modify\r
- * it under the terms of the GNU General Public License as published by\r
- * the Free Software Foundation; either version 2 of the License, or\r
- * (at your option) any later version.\r
- *\r
- * Mir is distributed in the hope that it will be useful,\r
- * but WITHOUT ANY WARRANTY; without even the implied warranty of\r
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\r
- * GNU General Public License for more details.\r
- *\r
- * You should have received a copy of the GNU General Public License\r
- * along with Mir; if not, write to the Free Software\r
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA\r
- *\r
- * In addition, as a special exception, The Mir-coders gives permission to link\r
- * the code of this program with any library licensed under the Apache Software License,\r
- * The Sun (tm) Java Advanced Imaging library (JAI), The Sun JIMI library\r
- * (or with modified versions of the above that use the same license as the above),\r
- * and distribute linked combinations including the two. You must obey the\r
- * GNU General Public License in all respects for all of the code used other than\r
- * the above mentioned libraries. If you modify this file, you may extend this\r
- * exception to your version of the file, but you are not obligated to do so.\r
- * If you do not wish to do so, delete this exception statement from your version.\r
- */\r
-package mir.storage;\r
-\r
-import java.io.IOException;\r
-import java.io.InputStreamReader;\r
-import java.sql.Connection;\r
-import java.sql.PreparedStatement;\r
-import java.sql.ResultSet;\r
-import java.sql.ResultSetMetaData;\r
-import java.sql.SQLException;\r
-import java.sql.Statement;\r
-import java.sql.Timestamp;\r
-import java.text.ParseException;\r
-import java.text.SimpleDateFormat;\r
-import java.util.ArrayList;\r
-import java.util.Calendar;\r
-import java.util.GregorianCalendar;\r
-import java.util.HashMap;\r
-import java.util.Iterator;\r
-import java.util.List;\r
-import java.util.Map;\r
-import java.util.TimeZone;\r
-import java.util.Vector;\r
-\r
-import com.codestudio.util.SQLManager;\r
-import mir.config.MirPropertiesConfiguration;\r
-import mir.config.MirPropertiesConfiguration.PropertiesConfigExc;\r
-import mir.entity.Entity;\r
-import mir.entity.EntityList;\r
-import mir.entity.StorableObjectEntity;\r
-import mir.log.LoggerWrapper;\r
-import mir.misc.StringUtil;\r
-import mir.storage.store.ObjectStore;\r
-import mir.storage.store.StorableObject;\r
-import mir.storage.store.StoreContainerType;\r
-import mir.storage.store.StoreIdentifier;\r
-import mir.storage.store.StoreUtil;\r
-import mir.util.JDBCStringRoutines;\r
-\r
-\r
-/**\r
- * Diese Klasse implementiert die Zugriffsschicht auf die Datenbank.\r
- * Alle Projektspezifischen Datenbankklassen erben von dieser Klasse.\r
- * In den Unterklassen wird im Minimalfall nur die Tabelle angegeben.\r
- * Im Konfigurationsfile findet sich eine Verweis auf den verwendeten\r
- * Treiber, Host, User und Passwort, ueber den der Zugriff auf die\r
- * Datenbank erfolgt.\r
- *\r
- * @version $Id: Database.java,v 1.46 2003/09/03 18:29:03 zapata Exp $\r
- * @author rk\r
- *\r
- */\r
-public class Database implements StorageObject {\r
- private static Class GENERIC_ENTITY_CLASS = mir.entity.StorableObjectEntity.class;\r
- private static Class STORABLE_OBJECT_ENTITY_CLASS = mir.entity.StorableObjectEntity.class;\r
-\r
-\r
- private static Map POPUP_EMPTYLINE = new HashMap();\r
- protected static final ObjectStore o_store = ObjectStore.getInstance();\r
- private static final int _millisPerHour = 60 * 60 * 1000;\r
- private static final int _millisPerMinute = 60 * 1000;\r
-\r
- static {\r
- // always same object saves a little space\r
- POPUP_EMPTYLINE.put("key", "");\r
- POPUP_EMPTYLINE.put("value", "--");\r
- }\r
-\r
- protected LoggerWrapper logger;\r
- protected MirPropertiesConfiguration configuration;\r
- protected String theTable;\r
- protected String theCoreTable = null;\r
- protected String thePKeyName = "id";\r
- protected int thePKeyType;\r
- protected int thePKeyIndex;\r
- protected boolean evaluatedMetaData = false;\r
- protected ArrayList metadataFields;\r
- protected ArrayList metadataLabels;\r
- protected ArrayList metadataNotNullFields;\r
- protected int[] metadataTypes;\r
- protected Class theEntityClass;\r
- protected List popupCache = null;\r
- protected boolean hasPopupCache = false;\r
- protected Map hashCache = null;\r
- protected boolean hasTimestamp = true;\r
- private String database_driver;\r
- private String database_url;\r
- private int defaultLimit;\r
-\r
- TimeZone timezone;\r
- SimpleDateFormat internalDateFormat;\r
- SimpleDateFormat userInputDateFormat;\r
-/*\r
- private SimpleDateFormat _dateFormatterOut;\r
- private SimpleDateFormat _dateFormatterIn;\r
- _dateFormatterOut = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");\r
- _dateFormatterIn = new SimpleDateFormat("yyyy-MM-dd HH:mm");\r
-*/\r
-\r
- /**\r
- * Kontruktor bekommt den Filenamen des Konfigurationsfiles ?bergeben.\r
- * Aus diesem file werden <code>Database.Logfile</code>,\r
- * <code>Database.Username</code>,<code>Database.Password</code>,\r
- * <code>Database.Host</code> und <code>Database.Adaptor</code>\r
- * ausgelesen und ein Broker f?r die Verbindugen zur Datenbank\r
- * erzeugt.\r
- *\r
- * @param String confFilename Dateiname der Konfigurationsdatei\r
- */\r
- public Database() throws StorageObjectFailure {\r
- try {\r
- configuration = MirPropertiesConfiguration.instance();\r
- }\r
- catch (PropertiesConfigExc e) {\r
- throw new StorageObjectFailure(e);\r
- }\r
- logger = new LoggerWrapper("Database");\r
- timezone = TimeZone.getTimeZone(configuration.getString("Mir.DefaultTimezone"));\r
- internalDateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");\r
- internalDateFormat.setTimeZone(timezone);\r
-\r
- userInputDateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm");\r
- userInputDateFormat.setTimeZone(timezone);\r
-\r
-\r
- String theAdaptorName = configuration.getString("Database.Adaptor");\r
- defaultLimit = Integer.parseInt(configuration.getString("Database.Limit"));\r
-\r
- try {\r
- theEntityClass = GENERIC_ENTITY_CLASS;\r
- }\r
- catch (Throwable e) {\r
- logger.error("Error in Database() constructor with " + theAdaptorName + " -- " + e.getMessage());\r
- throw new StorageObjectFailure("Error in Database() constructor.", e);\r
- }\r
- }\r
-\r
- /**\r
- * Liefert die Entity-Klasse zur?ck, in der eine Datenbankzeile gewrappt\r
- * wird. Wird die Entity-Klasse durch die erbende Klasse nicht ?berschrieben,\r
- * wird eine mir.entity.GenericEntity erzeugt.\r
- *\r
- * @return Class-Objekt der Entity\r
- */\r
- public java.lang.Class getEntityClass() {\r
- return theEntityClass;\r
- }\r
-\r
- /**\r
- * Liefert die Standardbeschr?nkung von select-Statements zur?ck, also\r
- * wieviel Datens?tze per Default selektiert werden.\r
- *\r
- * @return Standard-Anzahl der Datens?tze\r
- */\r
- public int getLimit() {\r
- return defaultLimit;\r
- }\r
-\r
- /**\r
- * Liefert den Namen des Primary-Keys zur?ck. Wird die Variable nicht von\r
- * der erbenden Klasse ?berschrieben, so ist der Wert <code>PKEY</code>\r
- * @return Name des Primary-Keys\r
- */\r
- public String getIdName() {\r
- return thePKeyName;\r
- }\r
-\r
- /**\r
- * Liefert den Namen der Tabelle, auf das sich das Datenbankobjekt bezieht.\r
- *\r
- * @return Name der Tabelle\r
- */\r
- public String getTableName() {\r
- return theTable;\r
- }\r
-\r
- /*\r
- * Dient dazu vererbte Tabellen bei objectrelationalen DBMS\r
- * zu speichern, wenn die id einer Tabelle in der parenttabelle verwaltet\r
- * wird.\r
- * @return liefert theCoreTabel als String zurueck, wenn gesetzt, sonst\r
- * the Table\r
- */\r
- public String getCoreTable() {\r
- if (theCoreTable != null) {\r
- return theCoreTable;\r
- }\r
- else {\r
- return theTable;\r
- }\r
- }\r
-\r
- /**\r
- * Liefert Feldtypen der Felder der Tabelle zurueck (s.a. java.sql.Types)\r
- * @return int-Array mit den Typen der Felder\r
- * @exception StorageObjectException\r
- */\r
- public int[] getTypes() throws StorageObjectFailure {\r
- if (metadataTypes == null) {\r
- get_meta_data();\r
- }\r
-\r
- return metadataTypes;\r
- }\r
-\r
- /**\r
- * Liefert eine Liste der Labels der Tabellenfelder\r
- * @return ArrayListe mit Labeln\r
- * @exception StorageObjectException\r
- */\r
- public List getLabels() throws StorageObjectFailure {\r
- if (metadataLabels == null) {\r
- get_meta_data();\r
- }\r
-\r
- return metadataLabels;\r
- }\r
-\r
- /**\r
- * Liefert eine Liste der Felder der Tabelle\r
- * @return ArrayList mit Feldern\r
- * @exception StorageObjectException\r
- */\r
- public List getFields() throws StorageObjectFailure {\r
- if (metadataFields == null) {\r
- get_meta_data();\r
- }\r
-\r
- return metadataFields;\r
- }\r
-\r
- /*\r
- * Gets value out of ResultSet according to type and converts to String\r
- * @param inValue Wert aus ResultSet.\r
- * @param aType Datenbanktyp.\r
- * @return liefert den Wert als String zurueck. Wenn keine Umwandlung moeglich\r
- * dann /unsupported value/\r
- */\r
- private String getValueAsString(ResultSet rs, int valueIndex, int aType)\r
- throws StorageObjectFailure {\r
- String outValue = null;\r
-\r
- if (rs != null) {\r
- try {\r
- switch (aType) {\r
- case java.sql.Types.BIT:\r
- outValue = (rs.getBoolean(valueIndex) == true) ? "1" : "0";\r
-\r
- break;\r
-\r
- case java.sql.Types.INTEGER:\r
- case java.sql.Types.SMALLINT:\r
- case java.sql.Types.TINYINT:\r
- case java.sql.Types.BIGINT:\r
-\r
- int out = rs.getInt(valueIndex);\r
-\r
- if (!rs.wasNull()) {\r
- outValue = new Integer(out).toString();\r
- }\r
-\r
- break;\r
-\r
- case java.sql.Types.NUMERIC:\r
-\r
- /** @todo Numeric can be float or double depending upon\r
- * metadata.getScale() / especially with oracle */\r
- long outl = rs.getLong(valueIndex);\r
-\r
- if (!rs.wasNull()) {\r
- outValue = new Long(outl).toString();\r
- }\r
-\r
- break;\r
-\r
- case java.sql.Types.REAL:\r
-\r
- float tempf = rs.getFloat(valueIndex);\r
-\r
- if (!rs.wasNull()) {\r
- tempf *= 10;\r
- tempf += 0.5;\r
-\r
- int tempf_int = (int) tempf;\r
- tempf = (float) tempf_int;\r
- tempf /= 10;\r
- outValue = "" + tempf;\r
- outValue = outValue.replace('.', ',');\r
- }\r
-\r
- break;\r
-\r
- case java.sql.Types.DOUBLE:\r
-\r
- double tempd = rs.getDouble(valueIndex);\r
-\r
- if (!rs.wasNull()) {\r
- tempd *= 10;\r
- tempd += 0.5;\r
-\r
- int tempd_int = (int) tempd;\r
- tempd = (double) tempd_int;\r
- tempd /= 10;\r
- outValue = "" + tempd;\r
- outValue = outValue.replace('.', ',');\r
- }\r
-\r
- break;\r
-\r
- case java.sql.Types.CHAR:\r
- case java.sql.Types.VARCHAR:\r
- case java.sql.Types.LONGVARCHAR:\r
- outValue = rs.getString(valueIndex);\r
-\r
- break;\r
-\r
- case java.sql.Types.LONGVARBINARY:\r
- outValue = rs.getString(valueIndex);\r
-\r
- break;\r
-\r
- case java.sql.Types.TIMESTAMP:\r
-\r
- // it's important to use Timestamp here as getting it\r
- // as a string is undefined and is only there for debugging\r
- // according to the API. we can make it a string through formatting.\r
- // -mh\r
- Timestamp timestamp = (rs.getTimestamp(valueIndex));\r
-\r
- if (!rs.wasNull()) {\r
- java.util.Date date = new java.util.Date(timestamp.getTime());\r
-\r
- Calendar calendar = new GregorianCalendar();\r
- calendar.setTime(date);\r
- calendar.setTimeZone(timezone);\r
- outValue = internalDateFormat.format(date);\r
-\r
- int offset = calendar.get(Calendar.ZONE_OFFSET) + calendar.get(Calendar.DST_OFFSET);\r
- String tzOffset = StringUtil.zeroPaddingNumber(Math.abs(offset) / _millisPerHour, 2, 2);\r
-\r
- if (offset<0)\r
- outValue = outValue + "-";\r
- else\r
- outValue = outValue + "+";\r
- outValue = outValue + tzOffset;\r
- }\r
-\r
- break;\r
-\r
- default:\r
- outValue = "<unsupported value>";\r
- logger.warn("Unsupported Datatype: at " + valueIndex + " (" + aType + ")");\r
- }\r
- } catch (SQLException e) {\r
- throw new StorageObjectFailure("Could not get Value out of Resultset -- ",\r
- e);\r
- }\r
- }\r
-\r
- return outValue;\r
- }\r
-\r
- /*\r
- * select-Operator um einen Datensatz zu bekommen.\r
- * @param id Primaerschluessel des Datensatzes.\r
- * @return liefert EntityObject des gefundenen Datensatzes oder null.\r
- */\r
- public Entity selectById(String id) throws StorageObjectExc {\r
- if ((id == null) || id.equals("")) {\r
- throw new StorageObjectExc("Database.selectById: Missing id");\r
- }\r
-\r
- // ask object store for object\r
- if (StoreUtil.implementsStorableObject(theEntityClass)) {\r
- String uniqueId = id;\r
-\r
- if (theEntityClass.equals(StorableObjectEntity.class)) {\r
- uniqueId += ("@" + theTable);\r
- }\r
-\r
- StoreIdentifier search_sid = new StoreIdentifier(theEntityClass, uniqueId);\r
- logger.debug("CACHE: (dbg) looking for sid " + search_sid.toString());\r
-\r
- Entity hit = (Entity) o_store.use(search_sid);\r
-\r
- if (hit != null) {\r
- return hit;\r
- }\r
- }\r
-\r
- Statement stmt = null;\r
- Connection con = getPooledCon();\r
- Entity returnEntity = null;\r
-\r
- try {\r
- ResultSet rs;\r
-\r
- /** @todo better prepared statement */\r
- String selectSql =\r
- "select * from " + theTable + " where " + thePKeyName + "=" + id;\r
- stmt = con.createStatement();\r
- rs = executeSql(stmt, selectSql);\r
-\r
- if (rs != null) {\r
- if (evaluatedMetaData == false) {\r
- evalMetaData(rs.getMetaData());\r
- }\r
-\r
- if (rs.next()) {\r
- returnEntity = makeEntityFromResultSet(rs);\r
- }\r
- else {\r
- logger.debug("No data for id: " + id + " in table " + theTable);\r
- }\r
-\r
- rs.close();\r
- }\r
- else {\r
- logger.debug("No Data for Id " + id + " in Table " + theTable);\r
- }\r
- }\r
- catch (SQLException sqe) {\r
- throwSQLException(sqe, "selectById");\r
- return null;\r
- }\r
- catch (NumberFormatException e) {\r
- logger.error("ID is no number: " + id);\r
- }\r
- finally {\r
- freeConnection(con, stmt);\r
- }\r
-\r
- return returnEntity;\r
- }\r
-\r
- /**\r
- * select-Operator um Datensaetze zu bekommen, die key = value erfuellen.\r
- * @param key Datenbankfeld der Bedingung.\r
- * @param value Wert die der key anehmen muss.\r
- * @return EntityList mit den gematchten Entities\r
- */\r
- public EntityList selectByFieldValue(String aField, String aValue) throws StorageObjectFailure {\r
- return selectByFieldValue(aField, aValue, 0);\r
- }\r
-\r
- /**\r
- * select-Operator um Datensaetze zu bekommen, die key = value erfuellen.\r
- * @param key Datenbankfeld der Bedingung.\r
- * @param value Wert die der key anehmen muss.\r
- * @param offset Gibt an ab welchem Datensatz angezeigt werden soll.\r
- * @return EntityList mit den gematchten Entities\r
- */\r
- public EntityList selectByFieldValue(String aField, String aValue, int offset) throws StorageObjectFailure {\r
- return selectByWhereClause(aField + "=" + aValue, offset);\r
- }\r
-\r
- /**\r
- * select-Operator liefert eine EntityListe mit den gematchten Datens?tzen zur?ck.\r
- * Also offset wird der erste Datensatz genommen.\r
- *\r
- * @param wc where-Clause\r
- * @return EntityList mit den gematchten Entities\r
- * @exception StorageObjectException\r
- */\r
- public EntityList selectByWhereClause(String where) throws StorageObjectFailure {\r
- return selectByWhereClause(where, 0);\r
- }\r
-\r
- /**\r
- * select-Operator liefert eine EntityListe mit den gematchten Datens?tzen zur?ck.\r
- * Als maximale Anzahl wird das Limit auf der Konfiguration genommen.\r
- *\r
- * @param wc where-Clause\r
- * @param offset ab welchem Datensatz.\r
- * @return EntityList mit den gematchten Entities\r
- * @exception StorageObjectException\r
- */\r
- public EntityList selectByWhereClause(String whereClause, int offset) throws StorageObjectFailure {\r
- return selectByWhereClause(whereClause, null, offset);\r
- }\r
-\r
- /**\r
- * select-Operator liefert eine EntityListe mit den gematchten Datens?tzen zur?ck.\r
- * Also offset wird der erste Datensatz genommen.\r
- * Als maximale Anzahl wird das Limit auf der Konfiguration genommen.\r
- *\r
- * @param wc where-Clause\r
- * @param ob orderBy-Clause\r
- * @return EntityList mit den gematchten Entities\r
- * @exception StorageObjectException\r
- */\r
- public EntityList selectByWhereClause(String where, String order) throws StorageObjectFailure {\r
- return selectByWhereClause(where, order, 0);\r
- }\r
-\r
- /**\r
- * select-Operator liefert eine EntityListe mit den gematchten Datens?tzen zur?ck.\r
- * Als maximale Anzahl wird das Limit auf der Konfiguration genommen.\r
- *\r
- * @param wc where-Clause\r
- * @param ob orderBy-Clause\r
- * @param offset ab welchem Datensatz\r
- * @return EntityList mit den gematchten Entities\r
- * @exception StorageObjectException\r
- */\r
- public EntityList selectByWhereClause(String whereClause, String orderBy, int offset) throws StorageObjectFailure {\r
- return selectByWhereClause(whereClause, orderBy, offset, defaultLimit);\r
- }\r
-\r
- /**\r
- * select-Operator liefert eine EntityListe mit den gematchten Datens?tzen zur?ck.\r
- * @param aWhereClause where-Clause\r
- * @param anOrderByClause orderBy-Clause\r
- * @param offset ab welchem Datensatz\r
- * @param limit wieviele Datens?tze\r
- * @return EntityList mit den gematchten Entities\r
- * @exception StorageObjectException\r
- */\r
- public EntityList selectByWhereClause(String aWhereClause, String anOrderByClause,\r
- int offset, int limit) throws StorageObjectFailure {\r
-\r
- // check o_store for entitylist\r
- if (StoreUtil.implementsStorableObject(theEntityClass)) {\r
- StoreIdentifier search_sid =\r
- new StoreIdentifier(\r
- theEntityClass, StoreContainerType.STOC_TYPE_ENTITYLIST,\r
- StoreUtil.getEntityListUniqueIdentifierFor(theTable, aWhereClause, anOrderByClause, offset, limit));\r
- EntityList hit = (EntityList) o_store.use(search_sid);\r
-\r
- if (hit != null) {\r
- logger.debug("CACHE (hit): " + search_sid.toString());\r
-\r
- return hit;\r
- }\r
- }\r
-\r
- // local\r
- EntityList theReturnList = null;\r
- Connection con = null;\r
- Statement stmt = null;\r
- ResultSet rs;\r
- int offsetCount = 0;\r
- int count = 0;\r
-\r
- // build sql-statement\r
-\r
- /** @todo count sql string should only be assembled if we really count\r
- * see below at the end of method //rk */\r
- if ((aWhereClause != null) && (aWhereClause.trim().length() == 0)) {\r
- aWhereClause = null;\r
- }\r
-\r
- StringBuffer countSql =\r
- new StringBuffer("select count(*) from ").append(theTable);\r
- StringBuffer selectSql =\r
- new StringBuffer("select * from ").append(theTable);\r
-\r
- if (aWhereClause != null) {\r
- selectSql.append(" where ").append(aWhereClause);\r
- countSql.append(" where ").append(aWhereClause);\r
- }\r
-\r
- if ((anOrderByClause != null) && !(anOrderByClause.trim().length() == 0)) {\r
- selectSql.append(" order by ").append(anOrderByClause);\r
- }\r
-\r
- if ((limit > -1) && (offset > -1)) {\r
- selectSql.append(" LIMIT ").append(limit).append(" OFFSET ").append(offset);\r
- }\r
-\r
- // execute sql\r
- try {\r
- con = getPooledCon();\r
- stmt = con.createStatement();\r
-\r
- // selecting...\r
- rs = executeSql(stmt, selectSql.toString());\r
-\r
- if (rs != null) {\r
- if (!evaluatedMetaData) {\r
- evalMetaData(rs.getMetaData());\r
- }\r
-\r
- theReturnList = new EntityList();\r
-\r
- Entity theResultEntity;\r
-\r
- while (rs.next()) {\r
- theResultEntity = makeEntityFromResultSet(rs);\r
- theReturnList.add(theResultEntity);\r
- offsetCount++;\r
- }\r
-\r
- rs.close();\r
- }\r
-\r
- // making entitylist infos\r
- count = offsetCount;\r
-\r
- if (theReturnList != null) {\r
- // now we decide if we have to know an overall count...\r
- count = offsetCount;\r
-\r
- if ((limit > -1) && (offset > -1)) {\r
- if (offsetCount == limit) {\r
- /** @todo counting should be deffered to entitylist\r
- * getSize() should be used */\r
- rs = executeSql(stmt, countSql.toString());\r
-\r
- if (rs != null) {\r
- if (rs.next()) {\r
- count = rs.getInt(1);\r
- }\r
-\r
- rs.close();\r
- }\r
- else {\r
- logger.error("Could not count: " + countSql);\r
- }\r
- }\r
- }\r
-\r
- theReturnList.setCount(count);\r
- theReturnList.setOffset(offset);\r
- theReturnList.setWhere(aWhereClause);\r
- theReturnList.setOrder(anOrderByClause);\r
- theReturnList.setStorage(this);\r
- theReturnList.setLimit(limit);\r
-\r
- if (offset >= limit) {\r
- theReturnList.setPrevBatch(offset - limit);\r
- }\r
-\r
- if ((offset + offsetCount) < count) {\r
- theReturnList.setNextBatch(offset + limit);\r
- }\r
-\r
- if (StoreUtil.implementsStorableObject(theEntityClass)) {\r
- StoreIdentifier sid = theReturnList.getStoreIdentifier();\r
- logger.debug("CACHE (add): " + sid.toString());\r
- o_store.add(sid);\r
- }\r
- }\r
- }\r
- catch (SQLException sqe) {\r
- throwSQLException(sqe, "selectByWhereClause");\r
- }\r
- finally {\r
- try {\r
- if (con != null) {\r
- freeConnection(con, stmt);\r
- }\r
- } catch (Throwable t) {\r
- }\r
- }\r
-\r
- return theReturnList;\r
- }\r
-\r
- /**\r
- * Bastelt aus einer Zeile der Datenbank ein EntityObjekt.\r
- *\r
- * @param rs Das ResultSetObjekt.\r
- * @return Entity Die Entity.\r
- */\r
- private Entity makeEntityFromResultSet(ResultSet rs)\r
- throws StorageObjectFailure {\r
- /** @todo OS: get Pkey from ResultSet and consult ObjectStore */\r
- Map theResultHash = new HashMap();\r
- String theResult = null;\r
- int theType;\r
- Entity returnEntity = null;\r
-\r
- try {\r
- int size = metadataFields.size();\r
-\r
- for (int i = 0; i < size; i++) {\r
- // alle durchlaufen bis nix mehr da\r
- theType = metadataTypes[i];\r
-\r
- if (theType == java.sql.Types.LONGVARBINARY) {\r
- InputStreamReader is =\r
- (InputStreamReader) rs.getCharacterStream(i + 1);\r
-\r
- if (is != null) {\r
- char[] data = new char[32768];\r
- StringBuffer theResultString = new StringBuffer();\r
- int len;\r
-\r
- while ((len = is.read(data)) > 0) {\r
- theResultString.append(data, 0, len);\r
- }\r
-\r
- is.close();\r
- theResult = theResultString.toString();\r
- } else {\r
- theResult = null;\r
- }\r
- } else {\r
- theResult = getValueAsString(rs, (i + 1), theType);\r
- }\r
-\r
- if (theResult != null) {\r
- theResultHash.put(metadataFields.get(i), theResult);\r
- }\r
- }\r
-\r
- if (theEntityClass != null) {\r
- returnEntity = (Entity) theEntityClass.newInstance();\r
- returnEntity.setStorage(this);\r
- returnEntity.setValues(theResultHash);\r
-\r
- if (returnEntity instanceof StorableObject) {\r
- logger.debug("CACHE: ( in) " + returnEntity.getId() + " :" + theTable);\r
- o_store.add(((StorableObject) returnEntity).getStoreIdentifier());\r
- }\r
- } else {\r
- throwStorageObjectException("Internal Error: theEntityClass not set!");\r
- }\r
- }\r
- catch (IllegalAccessException e) {\r
- throwStorageObjectException("No access! -- " + e.getMessage());\r
- }\r
- catch (IOException e) {\r
- throwStorageObjectException("IOException! -- " + e.getMessage());\r
- }\r
- catch (InstantiationException e) {\r
- throwStorageObjectException("No Instatiation! -- " + e.getMessage());\r
- }\r
- catch (SQLException sqe) {\r
- throwSQLException(sqe, "makeEntityFromResultSet");\r
-\r
- return null;\r
- }\r
-\r
- return returnEntity;\r
- }\r
-\r
- /**\r
- * Inserts an entity into the database.\r
- *\r
- * @param theEntity\r
- * @return der Wert des Primary-keys der eingef?gten Entity\r
- */\r
- public String insert(Entity theEntity) throws StorageObjectFailure {\r
- //cache\r
- invalidatePopupCache();\r
-\r
- // invalidating all EntityLists corresponding with theEntityClass\r
- if (StoreUtil.implementsStorableObject(theEntityClass)) {\r
- StoreContainerType stoc_type =\r
- StoreContainerType.valueOf(theEntityClass,\r
- StoreContainerType.STOC_TYPE_ENTITYLIST);\r
- o_store.invalidate(stoc_type);\r
- }\r
-\r
- String returnId = null;\r
- Connection con = null;\r
- PreparedStatement pstmt = null;\r
-\r
- try {\r
- List streamedInput = theEntity.streamedInput();\r
- StringBuffer f = new StringBuffer();\r
- StringBuffer v = new StringBuffer();\r
- String aField;\r
- String aValue;\r
- boolean firstField = true;\r
-\r
- // make sql-string\r
- for (int i = 0; i < getFields().size(); i++) {\r
- aField = (String) getFields().get(i);\r
-\r
- if (!aField.equals(thePKeyName)) {\r
- aValue = null;\r
-\r
- // exceptions\r
- if (!theEntity.hasValueForField(aField) && (\r
- aField.equals("webdb_create") ||\r
- aField.equals("webdb_lastchange"))) {\r
- aValue = "NOW()";\r
- }\r
- else {\r
- if ((streamedInput != null) && streamedInput.contains(aField)) {\r
- aValue = "?";\r
- }\r
- else {\r
- if (theEntity.hasValueForField(aField)) {\r
- aValue =\r
- "'" +\r
- JDBCStringRoutines.escapeStringLiteral((String) theEntity.getValue(aField)) + "'";\r
- }\r
- }\r
- }\r
-\r
- // wenn Wert gegeben, dann einbauen\r
- if (aValue != null) {\r
- if (firstField == false) {\r
- f.append(",");\r
- v.append(",");\r
- }\r
- else {\r
- firstField = false;\r
- }\r
-\r
- f.append(aField);\r
- v.append(aValue);\r
- }\r
- }\r
- }\r
- // end for\r
-\r
- // insert into db\r
- StringBuffer sqlBuf =\r
- new StringBuffer("insert into ").append(theTable).append("(").append(f)\r
- .append(") values (").append(v).append(")");\r
- String sql = sqlBuf.toString();\r
-\r
- logger.debug("INSERT: " + sql);\r
- con = getPooledCon();\r
- con.setAutoCommit(false);\r
- pstmt = con.prepareStatement(sql);\r
-\r
- if (streamedInput != null) {\r
- for (int i = 0; i < streamedInput.size(); i++) {\r
- String inputString =\r
- (String) theEntity.getValue((String) streamedInput.get(i));\r
- pstmt.setBytes(i + 1, inputString.getBytes());\r
- }\r
- }\r
-\r
- int ret = pstmt.executeUpdate();\r
-\r
- if (ret == 0) {\r
- //insert failed\r
- return null;\r
- }\r
-\r
- pstmt = con.prepareStatement("select currval('" + getCoreTable() + "_id_seq')");\r
-\r
- ResultSet rs = pstmt.executeQuery();\r
- rs.next();\r
- returnId = rs.getString(1);\r
- theEntity.setId(returnId);\r
- }\r
- catch (SQLException sqe) {\r
- throwSQLException(sqe, "insert");\r
- }\r
- finally {\r
- try {\r
- con.setAutoCommit(true);\r
- }\r
- catch (Exception e) {\r
- }\r
-\r
- freeConnection(con, pstmt);\r
- }\r
-\r
- /** @todo store entity in o_store */\r
- return returnId;\r
- }\r
-\r
- /**\r
- * Updates an entity in the database\r
- *\r
- * @param theEntity\r
- */\r
- public void update(Entity theEntity) throws StorageObjectFailure {\r
- Connection con = null;\r
- PreparedStatement pstmt = null;\r
-\r
- /** @todo this is stupid: why do we prepare statement, when we\r
- * throw it away afterwards. should be regular statement\r
- * update/insert could better be one routine called save()\r
- * that chooses to either insert or update depending if we\r
- * have a primary key in the entity. i don't know if we\r
- * still need the streamed input fields. // rk */\r
- /** @todo extension: check if Entity did change, otherwise we don't need\r
- * the roundtrip to the database */\r
- /** invalidating corresponding entitylists in o_store*/\r
- if (StoreUtil.implementsStorableObject(theEntityClass)) {\r
- StoreContainerType stoc_type =\r
- StoreContainerType.valueOf(theEntityClass,\r
- StoreContainerType.STOC_TYPE_ENTITYLIST);\r
- o_store.invalidate(stoc_type);\r
- }\r
-\r
- List streamedInput = theEntity.streamedInput();\r
- String id = theEntity.getId();\r
- String aField;\r
- StringBuffer fv = new StringBuffer();\r
- boolean firstField = true;\r
-\r
- //cache\r
- invalidatePopupCache();\r
-\r
- // build sql statement\r
- for (int i = 0; i < getFields().size(); i++) {\r
- aField = (String) metadataFields.get(i);\r
-\r
- // only normal cases\r
- if ( !(aField.equals(thePKeyName) ||\r
- aField.equals("webdb_create") ||\r
- aField.equals("webdb_lastchange") ||\r
- ((streamedInput != null) && streamedInput.contains(aField)))) {\r
- if (theEntity.hasValueForField(aField)) {\r
- if (firstField == false) {\r
- fv.append(", ");\r
- }\r
- else {\r
- firstField = false;\r
- }\r
-\r
- fv.append(aField).append("='").append(JDBCStringRoutines.escapeStringLiteral((String) theEntity.getValue(aField))).append("'");\r
-\r
- // fv.append(aField).append("='").append(StringUtil.quote((String)theEntity.getValue(aField))).append("'");\r
- }\r
- }\r
- }\r
-\r
- StringBuffer sql =\r
- new StringBuffer("update ").append(theTable).append(" set ").append(fv);\r
-\r
- // exceptions\r
- if (metadataFields.contains("webdb_lastchange")) {\r
- sql.append(",webdb_lastchange=NOW()");\r
- }\r
-\r
- // special case: the webdb_create requires the field in yyyy-mm-dd HH:mm\r
- // format so anything extra will be ignored. -mh\r
- if (metadataFields.contains("webdb_create") &&\r
- theEntity.hasValueForField("webdb_create")) {\r
- // minimum of 10 (yyyy-mm-dd)...\r
- if (theEntity.getValue("webdb_create").length() >= 10) {\r
- String dateString = theEntity.getValue("webdb_create");\r
-\r
- // if only 10, then add 00:00 so it doesn't throw a ParseException\r
- if (dateString.length() == 10) {\r
- dateString = dateString + " 00:00";\r
- }\r
-\r
- // TimeStamp stuff\r
- try {\r
- java.util.Date d = userInputDateFormat.parse(dateString);\r
-// Timestamp tStamp = new Timestamp(d.getTime());\r
- sql.append(",webdb_create='" + JDBCStringRoutines.formatDate(d) + "'");\r
- }\r
- catch (ParseException e) {\r
- throw new StorageObjectFailure(e);\r
- }\r
- }\r
- }\r
-\r
- if (streamedInput != null) {\r
- for (int i = 0; i < streamedInput.size(); i++) {\r
- sql.append(",").append(streamedInput.get(i)).append("=?");\r
- }\r
- }\r
-\r
- sql.append(" where id=").append(id);\r
- logger.debug("UPDATE: " + sql);\r
-\r
- try {\r
- con = getPooledCon();\r
- con.setAutoCommit(false);\r
- pstmt = con.prepareStatement(sql.toString());\r
-\r
- if (streamedInput != null) {\r
- for (int i = 0; i < streamedInput.size(); i++) {\r
- String inputString =\r
- theEntity.getValue((String) streamedInput.get(i));\r
- pstmt.setBytes(i + 1, inputString.getBytes());\r
- }\r
- }\r
-\r
- pstmt.executeUpdate();\r
- }\r
- catch (SQLException sqe) {\r
- throwSQLException(sqe, "update");\r
- }\r
- finally {\r
- try {\r
- con.setAutoCommit(true);\r
- }\r
- catch (Exception e) {\r
- ;\r
- }\r
-\r
- freeConnection(con, pstmt);\r
- }\r
- }\r
-\r
- /*\r
- * delete-Operator\r
- * @param id des zu loeschenden Datensatzes\r
- * @return boolean liefert true zurueck, wenn loeschen erfolgreich war.\r
- */\r
- public boolean delete(String id) throws StorageObjectFailure {\r
- invalidatePopupCache();\r
-\r
- // ostore send notification\r
- if (StoreUtil.implementsStorableObject(theEntityClass)) {\r
- String uniqueId = id;\r
-\r
- if (theEntityClass.equals(StorableObjectEntity.class)) {\r
- uniqueId += ("@" + theTable);\r
- }\r
-\r
- logger.debug("CACHE: (del) " + id);\r
-\r
- StoreIdentifier search_sid =\r
- new StoreIdentifier(theEntityClass,\r
- StoreContainerType.STOC_TYPE_ENTITY, uniqueId);\r
- o_store.invalidate(search_sid);\r
- }\r
-\r
- /** @todo could be prepared Statement */\r
- Statement stmt = null;\r
- Connection con = null;\r
- int res = 0;\r
- String sql =\r
- "delete from " + theTable + " where " + thePKeyName + "='" + id + "'";\r
-\r
- //theLog.printInfo("DELETE " + sql);\r
- try {\r
- con = getPooledCon();\r
- stmt = con.createStatement();\r
- res = stmt.executeUpdate(sql);\r
- } catch (SQLException sqe) {\r
- throwSQLException(sqe, "delete");\r
- } finally {\r
- freeConnection(con, stmt);\r
- }\r
-\r
- return (res > 0) ? true : false;\r
- }\r
-\r
- /**\r
- * Deletes entities based on a where clause\r
- *\r
- * @param aWhereClause\r
- * @return\r
- * @throws StorageObjectFailure\r
- */\r
- public int deleteByWhereClause(String aWhereClause) throws StorageObjectFailure {\r
- invalidatePopupCache();\r
- if (StoreUtil.implementsStorableObject(theEntityClass)) {\r
- StoreContainerType stoc_type = StoreContainerType.valueOf(theEntityClass, StoreContainerType.STOC_TYPE_ENTITYLIST);\r
- o_store.invalidate(stoc_type);\r
- }\r
-\r
- Statement stmt = null;\r
- Connection con = null;\r
- int res = 0;\r
- String sql =\r
- "delete from " + theTable + " where " + aWhereClause;\r
-\r
- //theLog.printInfo("DELETE " + sql);\r
- try {\r
- con = getPooledCon();\r
- stmt = con.createStatement();\r
- res = stmt.executeUpdate(sql);\r
- }\r
- catch (SQLException sqe) {\r
- throwSQLException(sqe, "delete");\r
- }\r
- finally {\r
- freeConnection(con, stmt);\r
- }\r
-\r
- return res;\r
- }\r
-\r
- /* noch nicht implementiert.\r
- * @return immer false\r
- */\r
- public boolean delete(EntityList theEntityList) {\r
- invalidatePopupCache();\r
-\r
- return false;\r
- }\r
-\r
- /* invalidates the popupCache\r
- */\r
- protected void invalidatePopupCache() {\r
- /** @todo invalidates toooo much */\r
- popupCache = null;\r
- hashCache = null;\r
- }\r
-\r
- /**\r
- * Diese Methode fuehrt den Sqlstring <i>sql</i> aus und timed im Logfile.\r
- * @param stmt Statemnt\r
- * @param sql Sql-String\r
- * @return ResultSet\r
- * @exception StorageObjectException\r
- */\r
- public ResultSet executeSql(Statement stmt, String sql)\r
- throws StorageObjectFailure, SQLException {\r
- ResultSet rs;\r
- long startTime = System.currentTimeMillis();\r
-\r
- try {\r
- rs = stmt.executeQuery(sql);\r
-\r
- logger.debug((System.currentTimeMillis() - startTime) + "ms. for: " + sql);\r
- }\r
- catch (SQLException e) {\r
- logger.error(e.getMessage() +"\n" + (System.currentTimeMillis() - startTime) + "ms. for: " + sql);\r
- throw e;\r
- }\r
-\r
- return rs;\r
- }\r
-/*\r
- public ResultSet executeSql(String sql) throws StorageObjectFailure, SQLException {\r
- long startTime = System.currentTimeMillis();\r
- Connection connection = null;\r
- Statement statement = null;\r
-\r
- try {\r
- connection = getPooledCon();\r
- statement = connection.createStatement();\r
- ResultSet result;\r
-\r
- result = statement.executeQuery(sql);\r
-\r
- logger.debug((System.currentTimeMillis() - startTime) + "ms. for: " + sql);\r
- return result;\r
- }\r
- catch (Throwable e) {\r
- logger.error(e.getMessage() +"\n" + (System.currentTimeMillis() - startTime) + "ms. for: " + sql);\r
- throw new StorageObjectFailure(e);\r
- }\r
- finally {\r
- if (connection!=null) {\r
- freeConnection(connection, statement);\r
- }\r
- }\r
- }\r
-*/\r
- private Map processRow(ResultSet aResultSet) throws StorageObjectFailure, StorageObjectExc {\r
- try {\r
- Map result = new HashMap();\r
- ResultSetMetaData metaData = aResultSet.getMetaData();\r
- int nrColumns = metaData.getColumnCount();\r
- for (int i=0; i<nrColumns; i++) {\r
- result.put(metaData.getColumnName(i+1), getValueAsString(aResultSet, i+1, metaData.getColumnType(i+1)));\r
- }\r
-\r
- return result;\r
- }\r
- catch (Throwable e) {\r
- throw new StorageObjectFailure(e);\r
- }\r
- }\r
-\r
- public List executeFreeSql(String sql, int aLimit) throws StorageObjectFailure, StorageObjectExc {\r
- Connection connection = null;\r
- Statement statement = null;\r
- try {\r
- List result = new Vector();\r
- connection = getPooledCon();\r
- statement = connection.createStatement();\r
- ResultSet resultset = executeSql(statement, sql);\r
- try {\r
- while (resultset.next() && result.size() < aLimit) {\r
- result.add(processRow(resultset));\r
- }\r
- }\r
- finally {\r
- resultset.close();\r
- }\r
-\r
- return result;\r
- }\r
- catch (Throwable e) {\r
- throw new StorageObjectFailure(e);\r
- }\r
- finally {\r
- if (connection!=null) {\r
- freeConnection(connection, statement);\r
- }\r
- }\r
- };\r
-\r
- public Map executeFreeSingleRowSql(String anSqlStatement) throws StorageObjectFailure, StorageObjectExc {\r
- try {\r
- List resultList = executeFreeSql(anSqlStatement, 1);\r
- try {\r
- if (resultList.size()>0)\r
- return (Map) resultList.get(0);\r
- else\r
- return null;\r
- }\r
- finally {\r
- }\r
- }\r
- catch (Throwable t) {\r
- throw new StorageObjectFailure(t);\r
- }\r
- };\r
-\r
- public String executeFreeSingleValueSql(String sql) throws StorageObjectFailure, StorageObjectExc {\r
- Map row = executeFreeSingleRowSql(sql);\r
-\r
- if (row==null)\r
- return null;\r
-\r
- Iterator i = row.values().iterator();\r
- if (i.hasNext())\r
- return (String) i.next();\r
- else\r
- return null;\r
- };\r
-\r
- /**\r
- * returns the number of rows in the table\r
- */\r
- public int getSize(String where) throws SQLException, StorageObjectFailure {\r
- long startTime = System.currentTimeMillis();\r
- String sql = "SELECT Count(*) FROM " + theTable;\r
-\r
- if ((where != null) && (where.length() != 0)) {\r
- sql = sql + " where " + where;\r
- }\r
-\r
- Connection con = null;\r
- Statement stmt = null;\r
- int result = 0;\r
-\r
- try {\r
- con = getPooledCon();\r
- stmt = con.createStatement();\r
-\r
- ResultSet rs = executeSql(stmt, sql);\r
-\r
- while (rs.next()) {\r
- result = rs.getInt(1);\r
- }\r
- }\r
- catch (SQLException e) {\r
- logger.error("Database.getSize: " + e.getMessage());\r
- }\r
- finally {\r
- freeConnection(con, stmt);\r
- }\r
-\r
- //theLog.printInfo(theTable + " has "+ result +" rows where " + where);\r
- logger.debug((System.currentTimeMillis() - startTime) + "ms. for: " + sql);\r
-\r
- return result;\r
- }\r
-\r
- public int executeUpdate(Statement stmt, String sql)\r
- throws StorageObjectFailure, SQLException {\r
- int rs;\r
- long startTime = System.currentTimeMillis();\r
-\r
- try {\r
- rs = stmt.executeUpdate(sql);\r
-\r
- logger.debug((System.currentTimeMillis() - startTime) + "ms. for: " + sql);\r
- }\r
- catch (SQLException e) {\r
- logger.error("Failed: " + (System.currentTimeMillis() - startTime) + "ms. for: " + sql);\r
- throw e;\r
- }\r
-\r
- return rs;\r
- }\r
-\r
- public int executeUpdate(String sql)\r
- throws StorageObjectFailure, SQLException {\r
- int result = -1;\r
- long startTime = System.currentTimeMillis();\r
- Connection con = null;\r
- PreparedStatement pstmt = null;\r
-\r
- try {\r
- con = getPooledCon();\r
- pstmt = con.prepareStatement(sql);\r
- result = pstmt.executeUpdate();\r
- }\r
- catch (Throwable e) {\r
- logger.error("Database.executeUpdate(" + sql + "): " + e.getMessage());\r
- throw new StorageObjectFailure("Database.executeUpdate(" + sql + "): " + e.getMessage(), e);\r
- }\r
- finally {\r
- freeConnection(con, pstmt);\r
- }\r
-\r
- logger.debug((System.currentTimeMillis() - startTime) + "ms. for: " + sql);\r
- return result;\r
- }\r
-\r
- /**\r
- * Wertet ResultSetMetaData aus und setzt interne Daten entsprechend\r
- * @param md ResultSetMetaData\r
- * @exception StorageObjectException\r
- */\r
- private void evalMetaData(ResultSetMetaData md) throws StorageObjectFailure {\r
- this.evaluatedMetaData = true;\r
- this.metadataFields = new ArrayList();\r
- this.metadataLabels = new ArrayList();\r
- this.metadataNotNullFields = new ArrayList();\r
-\r
- try {\r
- int numFields = md.getColumnCount();\r
- this.metadataTypes = new int[numFields];\r
-\r
- String aField;\r
- int aType;\r
-\r
- for (int i = 1; i <= numFields; i++) {\r
- aField = md.getColumnName(i);\r
- metadataFields.add(aField);\r
- metadataLabels.add(md.getColumnLabel(i));\r
- aType = md.getColumnType(i);\r
- metadataTypes[i - 1] = aType;\r
-\r
- if (aField.equals(thePKeyName)) {\r
- thePKeyType = aType;\r
- thePKeyIndex = i;\r
- }\r
-\r
- if (md.isNullable(i) == ResultSetMetaData.columnNullable) {\r
- metadataNotNullFields.add(aField);\r
- }\r
- }\r
- }\r
- catch (SQLException e) {\r
- throwSQLException(e, "evalMetaData");\r
- }\r
- }\r
-\r
- /**\r
- * Wertet die Metadaten eines Resultsets fuer eine Tabelle aus,\r
- * um die alle Columns und Typen einer Tabelle zu ermitteln.\r
- */\r
- private void get_meta_data() throws StorageObjectFailure {\r
- Connection con = null;\r
- PreparedStatement pstmt = null;\r
- String sql = "select * from " + theTable + " where 0=1";\r
-\r
- try {\r
- con = getPooledCon();\r
- pstmt = con.prepareStatement(sql);\r
-\r
- logger.debug("METADATA: " + sql);\r
- ResultSet rs = pstmt.executeQuery();\r
- evalMetaData(rs.getMetaData());\r
- rs.close();\r
- }\r
- catch (SQLException e) {\r
- throwSQLException(e, "get_meta_data");\r
- }\r
- finally {\r
- freeConnection(con, pstmt);\r
- }\r
- }\r
-\r
- public Connection getPooledCon() throws StorageObjectFailure {\r
- Connection con = null;\r
-\r
- try {\r
- con = SQLManager.getInstance().requestConnection();\r
- }\r
- catch (SQLException e) {\r
- logger.error("could not connect to the database " + e.getMessage());\r
-\r
- throw new StorageObjectFailure("Could not connect to the database", e);\r
- }\r
-\r
- return con;\r
- }\r
-\r
- public void freeConnection(Connection con, Statement stmt)\r
- throws StorageObjectFailure {\r
- SQLManager.closeStatement(stmt);\r
- SQLManager.getInstance().returnConnection(con);\r
- }\r
-\r
- /**\r
- * Wertet SQLException aus und wirft dannach eine StorageObjectException\r
- * @param sqe SQLException\r
- * @param wo Funktonsname, in der die SQLException geworfen wurde\r
- * @exception StorageObjectException\r
- */\r
- protected void throwSQLException(SQLException sqe, String aFunction) throws StorageObjectFailure {\r
- String state = "";\r
- String message = "";\r
- int vendor = 0;\r
-\r
- if (sqe != null) {\r
- state = sqe.getSQLState();\r
- message = sqe.getMessage();\r
- vendor = sqe.getErrorCode();\r
- }\r
-\r
- String information =\r
- "SQL Error: " +\r
- "state= " + state +\r
- ", vendor= " + vendor +\r
- ", message=" + message +\r
- ", function= " + aFunction;\r
-\r
- logger.error(information);\r
-\r
- throw new StorageObjectFailure(information, sqe);\r
- }\r
-\r
- protected void _throwStorageObjectException(Exception e, String aFunction)\r
- throws StorageObjectFailure {\r
-\r
- if (e != null) {\r
- logger.error(e.getMessage() + aFunction);\r
- throw new StorageObjectFailure(aFunction, e);\r
- }\r
- }\r
-\r
- /**\r
- * Loggt Fehlermeldung mit dem Parameter Message und wirft dannach\r
- * eine StorageObjectException\r
- * @param message Nachricht mit dem Fehler\r
- * @exception StorageObjectException\r
- */\r
- void throwStorageObjectException(String aMessage) throws StorageObjectFailure {\r
- logger.error(aMessage);\r
- throw new StorageObjectFailure(aMessage, null);\r
- }\r
+/*
+ * Copyright (C) 2001, 2002 The Mir-coders group
+ *
+ * This file is part of Mir.
+ *
+ * Mir is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * Mir is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Mir; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * In addition, as a special exception, The Mir-coders gives permission to link
+ * the code of this program with any library licensed under the Apache Software License,
+ * The Sun (tm) Java Advanced Imaging library (JAI), The Sun JIMI library
+ * (or with modified versions of the above that use the same license as the above),
+ * and distribute linked combinations including the two. You must obey the
+ * GNU General Public License in all respects for all of the code used other than
+ * the above mentioned libraries. If you modify this file, you may extend this
+ * exception to your version of the file, but you are not obligated to do so.
+ * If you do not wish to do so, delete this exception statement from your version.
+ */
+package mir.storage;
+
+import mir.config.MirPropertiesConfiguration;
+import mir.entity.Entity;
+import mir.entity.EntityList;
+import mir.entity.StorableObjectEntity;
+import mir.log.LoggerWrapper;
+import mir.misc.StringUtil;
+import mir.storage.store.*;
+import mir.util.JDBCStringRoutines;
+import mircoders.global.MirGlobal;
+
+import java.io.ByteArrayInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.sql.*;
+import java.text.ParseException;
+import java.text.SimpleDateFormat;
+import java.util.*;
+
+/**
+ * Implements database access.
+ *
+ * @author rk
+ *
+ */
+public class Database implements StorageObject {
+ private static Class GENERIC_ENTITY_CLASS = mir.entity.StorableObjectEntity.class;
+ protected static final ObjectStore o_store = ObjectStore.getInstance();
+ private static final int _millisPerHour = 60 * 60 * 1000;
+
+ protected LoggerWrapper logger;
+
+ protected MirPropertiesConfiguration configuration;
+ protected String mainTable;
+ protected String primaryKeySequence = null;
+ protected String primaryKeyField = "id";
+
+ protected boolean evaluatedMetaData = false;
+ protected ArrayList metadataFields;
+ protected ArrayList metadataLabels;
+ protected ArrayList metadataNotNullFields;
+ protected int[] metadataTypes;
+ protected Class theEntityClass;
+ protected boolean hasTimestamp = true;
+ private int defaultLimit;
+
+ TimeZone timezone;
+ SimpleDateFormat internalDateFormat;
+ SimpleDateFormat userInputDateFormat;
+
+ /**
+ * Kontruktor bekommt den Filenamen des Konfigurationsfiles ?bergeben.
+ * Aus diesem file werden <code>Database.Logfile</code>,
+ * <code>Database.Username</code>,<code>Database.Password</code>,
+ * <code>Database.Host</code> und <code>Database.Adaptor</code>
+ * ausgelesen und ein Broker f?r die Verbindugen zur Datenbank
+ * erzeugt.
+ */
+ public Database() throws StorageObjectFailure {
+ configuration = MirPropertiesConfiguration.instance();
+ logger = new LoggerWrapper("Database");
+ timezone = TimeZone.getTimeZone(configuration.getString("Mir.DefaultTimezone"));
+ internalDateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
+ internalDateFormat.setTimeZone(timezone);
+
+ userInputDateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm");
+ userInputDateFormat.setTimeZone(timezone);
+
+ String theAdaptorName = configuration.getString("Database.Adaptor");
+ defaultLimit = Integer.parseInt(configuration.getString("Database.Limit"));
+
+ try {
+ theEntityClass = GENERIC_ENTITY_CLASS;
+ }
+ catch (Throwable e) {
+ logger.error("Error in Database() constructor with " + theAdaptorName + " -- " + e.getMessage());
+ throw new StorageObjectFailure("Error in Database() constructor.", e);
+ }
+ }
+
+ /**
+ * Liefert die Entity-Klasse zur?ck, in der eine Datenbankzeile gewrappt
+ * wird. Wird die Entity-Klasse durch die erbende Klasse nicht ?berschrieben,
+ * wird eine mir.entity.GenericEntity erzeugt.
+ *
+ * @return Class-Objekt der Entity
+ */
+ public java.lang.Class getEntityClass() {
+ return theEntityClass;
+ }
+
+ /**
+ * Liefert die Standardbeschr?nkung von select-Statements zur?ck, also
+ * wieviel Datens?tze per Default selektiert werden.
+ *
+ * @return Standard-Anzahl der Datens?tze
+ */
+ public int getLimit() {
+ return defaultLimit;
+ }
+
+ /**
+ * Liefert den Namen des Primary-Keys zur?ck. Wird die Variable nicht von
+ * der erbenden Klasse ?berschrieben, so ist der Wert <code>PKEY</code>
+ * @return Name des Primary-Keys
+ */
+ public String getIdName() {
+ return primaryKeyField;
+ }
+
+ /**
+ * Liefert den Namen der Tabelle, auf das sich das Datenbankobjekt bezieht.
+ *
+ * @return Name der Tabelle
+ */
+ public String getTableName() {
+ return mainTable;
+ }
+
+ /**
+ * Returns the id that was most recently added to the database
+ */
+ private String getLatestInsertedId(Connection aConnection) throws SQLException {
+ if (primaryKeySequence==null)
+ primaryKeySequence = mainTable+"_id_seq";
+
+ PreparedStatement statement = aConnection.prepareStatement("select currval('" + primaryKeySequence + "')");
+
+ ResultSet rs = statement.executeQuery();
+ rs.next();
+ return rs.getString(1);
+ }
+
+ /**
+ * Liefert eine Liste der Felder der Tabelle
+ * @return ArrayList mit Feldern
+ */
+ public List getFields() throws StorageObjectFailure {
+ if (metadataFields == null) {
+ get_meta_data();
+ }
+
+ return metadataFields;
+ }
+
+ /**
+ * Gets value out of ResultSet according to type and converts to String
+ * @param rs ResultSet.
+ * @param aType a type from java.sql.Types.*
+ * @param valueIndex index in ResultSet
+ * @return returns the value as String. If no conversion is possible
+ * /unsupported value/ is returned
+ */
+ private String getValueAsString(ResultSet rs, int valueIndex, int aType)
+ throws StorageObjectFailure {
+ String outValue = null;
+
+ if (rs != null) {
+ try {
+ switch (aType) {
+ case java.sql.Types.BIT:
+ outValue = (rs.getBoolean(valueIndex) == true) ? "1" : "0";
+
+ break;
+
+ case java.sql.Types.INTEGER:
+ case java.sql.Types.SMALLINT:
+ case java.sql.Types.TINYINT:
+ case java.sql.Types.BIGINT:
+
+ int out = rs.getInt(valueIndex);
+
+ if (!rs.wasNull()) {
+ outValue = new Integer(out).toString();
+ }
+
+ break;
+
+ case java.sql.Types.NUMERIC:
+
+ /** todo Numeric can be float or double depending upon
+ * metadata.getScale() / especially with oracle */
+ long outl = rs.getLong(valueIndex);
+
+ if (!rs.wasNull()) {
+ outValue = new Long(outl).toString();
+ }
+
+ break;
+
+ case java.sql.Types.REAL:
+
+ float tempf = rs.getFloat(valueIndex);
+
+ if (!rs.wasNull()) {
+ tempf *= 10;
+ tempf += 0.5;
+
+ int tempf_int = (int) tempf;
+ tempf = (float) tempf_int;
+ tempf /= 10;
+ outValue = "" + tempf;
+ outValue = outValue.replace('.', ',');
+ }
+
+ break;
+
+ case java.sql.Types.DOUBLE:
+
+ double tempd = rs.getDouble(valueIndex);
+
+ if (!rs.wasNull()) {
+ tempd *= 10;
+ tempd += 0.5;
+
+ int tempd_int = (int) tempd;
+ tempd = (double) tempd_int;
+ tempd /= 10;
+ outValue = "" + tempd;
+ outValue = outValue.replace('.', ',');
+ }
+
+ break;
+
+ case java.sql.Types.CHAR:
+ case java.sql.Types.VARCHAR:
+ case java.sql.Types.LONGVARCHAR:
+ outValue = rs.getString(valueIndex);
+
+ break;
+
+ case java.sql.Types.LONGVARBINARY:
+ outValue = rs.getString(valueIndex);
+
+ break;
+
+ case java.sql.Types.TIMESTAMP:
+
+ // it's important to use Timestamp here as getting it
+ // as a string is undefined and is only there for debugging
+ // according to the API. we can make it a string through formatting.
+ // -mh
+ Timestamp timestamp = (rs.getTimestamp(valueIndex));
+
+ if (!rs.wasNull()) {
+ java.util.Date date = new java.util.Date(timestamp.getTime());
+
+ Calendar calendar = new GregorianCalendar();
+ calendar.setTime(date);
+ calendar.setTimeZone(timezone);
+ outValue = internalDateFormat.format(date);
+
+ int offset = calendar.get(Calendar.ZONE_OFFSET) + calendar.get(Calendar.DST_OFFSET);
+ String tzOffset = StringUtil.zeroPaddingNumber(Math.abs(offset) / _millisPerHour, 2, 2);
+
+ if (offset<0)
+ outValue = outValue + "-";
+ else
+ outValue = outValue + "+";
+ outValue = outValue + tzOffset;
+ }
+
+ break;
+
+ default:
+ outValue = "<unsupported value>";
+ logger.warn("Unsupported Datatype: at " + valueIndex + " (" + aType + ")");
+ }
+ } catch (SQLException e) {
+ throw new StorageObjectFailure("Could not get Value out of Resultset -- ",
+ e);
+ }
+ }
+
+ return outValue;
+ }
+
+ /**
+ * select-Operator um einen Datensatz zu bekommen.
+ * @param id Primaerschluessel des Datensatzes.
+ * @return liefert EntityObject des gefundenen Datensatzes oder null.
+ */
+ public Entity selectById(String id) throws StorageObjectExc {
+ if ((id == null) || id.equals("")) {
+ throw new StorageObjectExc("Database.selectById: Missing id");
+ }
+
+ // ask object store for object
+ if (StoreUtil.extendsStorableEntity(theEntityClass)) {
+ String uniqueId = id;
+
+ if (theEntityClass.equals(StorableObjectEntity.class)) {
+ uniqueId += ("@" + mainTable);
+ }
+
+ StoreIdentifier search_sid = new StoreIdentifier(theEntityClass, uniqueId);
+ logger.debug("CACHE: (dbg) looking for sid " + search_sid.toString());
+
+ Entity hit = (Entity) o_store.use(search_sid);
+
+ if (hit != null) {
+ return hit;
+ }
+ }
+
+ Statement stmt = null;
+ Connection con = obtainConnection();
+ Entity returnEntity = null;
+
+ try {
+ ResultSet rs;
+
+ /** todo better prepared statement */
+ String selectSql =
+ "select * from " + mainTable + " where " + primaryKeyField + "=" + id;
+ stmt = con.createStatement();
+ rs = executeSql(stmt, selectSql);
+
+ if (rs != null) {
+ if (evaluatedMetaData == false) {
+ evalMetaData(rs.getMetaData());
+ }
+
+ if (rs.next()) {
+ returnEntity = makeEntityFromResultSet(rs);
+ }
+ else {
+ logger.warn("No data for id: " + id + " in table " + mainTable);
+ }
+
+ rs.close();
+ }
+ else {
+ logger.warn("No Data for Id " + id + " in Table " + mainTable);
+ }
+ }
+ catch (SQLException sqe) {
+ throwSQLException(sqe, "selectById");
+ return null;
+ }
+ catch (NumberFormatException e) {
+ logger.error("ID is no number: " + id);
+ }
+ finally {
+ freeConnection(con, stmt);
+ }
+
+ return returnEntity;
+ }
+
+ /**
+ * This method makes it possible to make selects across multiple tables
+ *
+ * @param mainTablePrefix prefix for the mainTable
+ * @param extraTables a vector of tables for relational select
+ * @param aWhereClause whereClause
+ * @return EntityList of selected Objects
+ * @throws StorageObjectFailure
+ */
+
+ public EntityList selectByWhereClauseWithExtraTables(String mainTablePrefix,
+ List extraTables, String aWhereClause )
+ throws StorageObjectFailure {
+ return selectByWhereClause( mainTablePrefix, extraTables, aWhereClause, "", 0, defaultLimit);
+ }
+
+ public EntityList selectByFieldValue(String aField, String aValue) throws StorageObjectFailure {
+ return selectByFieldValue(aField, aValue, 0);
+ }
+
+ public EntityList selectByFieldValue(String aField, String aValue, int offset) throws StorageObjectFailure {
+ return selectByWhereClause(aField + "='" + JDBCStringRoutines.escapeStringLiteral(aValue)+"'", offset);
+ }
+
+ /**
+ * select-Operator liefert eine EntityListe mit den gematchten Datens?tzen zur?ck.
+ * Also offset wird der erste Datensatz genommen.
+ *
+ * @param where where-Clause
+ * @return EntityList mit den gematchten Entities
+ * @exception StorageObjectFailure
+ */
+ public EntityList selectByWhereClause(String where) throws StorageObjectFailure {
+ return selectByWhereClause(where, 0);
+ }
+
+ /**
+ * select-Operator liefert eine EntityListe mit den gematchten Datens?tzen zur?ck.
+ * Als maximale Anzahl wird das Limit auf der Konfiguration genommen.
+ *
+ * @param whereClause where-Clause
+ * @param offset ab welchem Datensatz.
+ * @return EntityList mit den gematchten Entities
+ * @exception StorageObjectFailure
+ */
+ public EntityList selectByWhereClause(String whereClause, int offset) throws StorageObjectFailure {
+ return selectByWhereClause(whereClause, null, offset);
+ }
+
+ /**
+ * select-Operator liefert eine EntityListe mit den gematchten Datens?tzen zur?ck.
+ * Also offset wird der erste Datensatz genommen.
+ * Als maximale Anzahl wird das Limit auf der Konfiguration genommen.
+ *
+ * @param where where-Clause
+ * @param order orderBy-Clause
+ * @return EntityList mit den gematchten Entities
+ * @exception StorageObjectFailure
+ */
+ public EntityList selectByWhereClause(String where, String order) throws StorageObjectFailure {
+ return selectByWhereClause(where, order, 0);
+ }
+
+ public EntityList selectByWhereClause(String mainTablePrefix, List extraTables, String where, String order) throws StorageObjectFailure {
+ return selectByWhereClause(mainTablePrefix, extraTables, where, order, 0, defaultLimit);
+ }
+
+ /**
+ * select-Operator liefert eine EntityListe mit den gematchten Datens?tzen zur?ck.
+ * Als maximale Anzahl wird das Limit auf der Konfiguration genommen.
+ *
+ * @param whereClause where-Clause
+ * @param orderBy orderBy-Clause
+ * @param offset ab welchem Datensatz
+ * @return EntityList mit den gematchten Entities
+ * @exception StorageObjectFailure
+ */
+ public EntityList selectByWhereClause(String whereClause, String orderBy, int offset) throws StorageObjectFailure {
+ return selectByWhereClause(whereClause, orderBy, offset, defaultLimit);
+ }
+
+ /**
+ * select-Operator returns EntityList with matching rows in Database.
+ * @param aWhereClause where-Clause
+ * @param anOrderByClause orderBy-Clause
+ * @param offset ab welchem Datensatz
+ * @param limit wieviele Datens?tze
+ * @return EntityList mit den gematchten Entities
+ * @exception StorageObjectFailure
+ */
+ public EntityList selectByWhereClause(String aWhereClause, String anOrderByClause,
+ int offset, int limit) throws StorageObjectFailure {
+ return selectByWhereClause("", null, aWhereClause, anOrderByClause, offset, limit);
+ }
+
+
+ /**
+ * select-Operator returns EntityList with matching rows in Database.
+ * @param aWhereClause where-Clause
+ * @param anOrderByClause orderBy-Clause
+ * @param offset ab welchem Datensatz
+ * @param limit wieviele Datens?tze
+ * @return EntityList mit den gematchten Entities
+ * @exception StorageObjectFailure
+ */
+ public EntityList selectByWhereClause(String mainTablePrefix, List extraTables,
+ String aWhereClause, String anOrderByClause,
+ int offset, int limit) throws StorageObjectFailure {
+
+ // TODO get rid of emtpy Strings in extraTables
+ // make extraTables null, if single empty String in it
+ // cause StringUtil.splitString puts in emptyString
+ if (extraTables != null && ((String)extraTables.get(0)).trim().equals(""))
+ {
+ logger.debug("+++ made extraTables to null!");
+ extraTables=null;
+ }
+
+ String useTable = mainTable;
+ String selectStar = "*";
+ if (mainTablePrefix!=null && mainTablePrefix.trim().length()>0) {
+ useTable+=" "+mainTablePrefix;
+ selectStar=mainTablePrefix.trim() + ".*";
+ }
+
+ // check o_store for entitylist
+ // only if no relational select
+ if (extraTables==null) {
+ if (StoreUtil.extendsStorableEntity(theEntityClass)) {
+ StoreIdentifier searchSid = new StoreIdentifier(theEntityClass,
+ StoreContainerType.STOC_TYPE_ENTITYLIST,
+ StoreUtil.getEntityListUniqueIdentifierFor(mainTable,
+ aWhereClause, anOrderByClause, offset, limit));
+ EntityList hit = (EntityList) o_store.use(searchSid);
+
+ if (hit != null) {
+ return hit;
+ }
+ }
+ }
+
+ // local
+ EntityList theReturnList = null;
+ Connection con = null;
+ Statement stmt = null;
+ ResultSet rs;
+ int offsetCount = 0;
+ int count = 0;
+
+ // build sql-statement
+
+ if ((aWhereClause != null) && (aWhereClause.trim().length() == 0)) {
+ aWhereClause = null;
+ }
+
+ StringBuffer countSql =
+ new StringBuffer("select count(*) from ").append(useTable);
+ StringBuffer selectSql =
+ new StringBuffer("select "+selectStar+" from ").append(useTable);
+
+ // append extratables, if necessary
+ if (extraTables!=null) {
+ for (int i=0;i < extraTables.size();i++) {
+ if (!extraTables.get(i).equals("")) {
+ countSql.append( ", " + extraTables.get(i));
+ selectSql.append( ", " + extraTables.get(i));
+ }
+ }
+ }
+
+ if (aWhereClause != null) {
+ selectSql.append(" where ").append(aWhereClause);
+ countSql.append(" where ").append(aWhereClause);
+ }
+
+ if ((anOrderByClause != null) && !(anOrderByClause.trim().length() == 0)) {
+ selectSql.append(" order by ").append(anOrderByClause);
+ }
+
+ if ((limit > -1) && (offset > -1)) {
+ selectSql.append(" LIMIT ").append(limit).append(" OFFSET ").append(offset);
+ }
+
+ // execute sql
+ try {
+ con = obtainConnection();
+ stmt = con.createStatement();
+
+ // selecting...
+ rs = executeSql(stmt, selectSql.toString());
+
+ if (rs != null) {
+ if (!evaluatedMetaData) {
+ evalMetaData(rs.getMetaData());
+ }
+
+ theReturnList = new EntityList();
+ Entity theResultEntity;
+ while (rs.next()) {
+ theResultEntity = makeEntityFromResultSet(rs);
+ theReturnList.add(theResultEntity);
+ offsetCount++;
+ }
+ rs.close();
+ }
+
+ // making entitylist infos
+ count = offsetCount;
+
+ if (theReturnList != null) {
+ // now we decide if we have to know an overall count...
+ count = offsetCount;
+
+ if ((limit > -1) && (offset > -1)) {
+ if (offsetCount == limit) {
+ rs = executeSql(stmt, countSql.toString());
+
+ if (rs != null) {
+ if (rs.next()) {
+ count = rs.getInt(1);
+ }
+
+ rs.close();
+ }
+ else {
+ logger.error("Could not count: " + countSql);
+ }
+ }
+ }
+
+ theReturnList.setCount(count);
+ theReturnList.setOffset(offset);
+ theReturnList.setWhere(aWhereClause);
+ theReturnList.setOrder(anOrderByClause);
+ theReturnList.setStorage(this);
+ theReturnList.setLimit(limit);
+
+ if (offset >= limit) {
+ theReturnList.setPrevBatch(offset - limit);
+ }
+
+ if ((offset + offsetCount) < count) {
+ theReturnList.setNextBatch(offset + limit);
+ }
+
+ if (extraTables==null && StoreUtil.extendsStorableEntity(theEntityClass)) {
+ StoreIdentifier sid = theReturnList.getStoreIdentifier();
+ logger.debug("CACHE (add): " + sid.toString());
+ o_store.add(sid);
+ }
+ }
+ }
+ catch (SQLException sqe) {
+ throwSQLException(sqe, "selectByWhereClause");
+ }
+ finally {
+ try {
+ if (con != null) {
+ freeConnection(con, stmt);
+ }
+ } catch (Throwable t) {
+ }
+ }
+
+ return theReturnList;
+ }
+
+ /**
+ * Bastelt aus einer Zeile der Datenbank ein EntityObjekt.
+ *
+ * @param rs Das ResultSetObjekt.
+ * @return Entity Die Entity.
+ */
+ private Entity makeEntityFromResultSet(ResultSet rs)
+ throws StorageObjectFailure {
+ Map theResultHash = new HashMap();
+ String theResult = null;
+ int theType;
+ Entity returnEntity = null;
+
+ try {
+ if (StoreUtil.extendsStorableEntity(theEntityClass)) {
+ StoreIdentifier searchSid = StorableObjectEntity.getStoreIdentifier(this,
+ theEntityClass, rs);
+ Entity hit = (Entity) o_store.use(searchSid);
+ if (hit != null) return hit;
+ }
+
+
+ int size = metadataFields.size();
+
+ for (int i = 0; i < size; i++) {
+ // alle durchlaufen bis nix mehr da
+ theType = metadataTypes[i];
+
+ if (theType == java.sql.Types.LONGVARBINARY) {
+ InputStreamReader is =
+ (InputStreamReader) rs.getCharacterStream(i + 1);
+
+ if (is != null) {
+ char[] data = new char[32768];
+ StringBuffer theResultString = new StringBuffer();
+ int len;
+
+ while ((len = is.read(data)) > 0) {
+ theResultString.append(data, 0, len);
+ }
+
+ is.close();
+ theResult = theResultString.toString();
+ } else {
+ theResult = null;
+ }
+ } else {
+ theResult = getValueAsString(rs, (i + 1), theType);
+ }
+
+ if (theResult != null) {
+ theResultHash.put(metadataFields.get(i), theResult);
+ }
+ }
+
+ if (theEntityClass != null) {
+ returnEntity = (Entity) theEntityClass.newInstance();
+ returnEntity.setStorage(this);
+ returnEntity.setFieldValues(theResultHash);
+
+ if (returnEntity instanceof StorableObject) {
+ logger.debug("CACHE: ( in) " + returnEntity.getId() + " :" + mainTable);
+ o_store.add(((StorableObject) returnEntity).getStoreIdentifier());
+ }
+ } else {
+ throwStorageObjectException("Internal Error: theEntityClass not set!");
+ }
+ }
+ catch (IllegalAccessException e) {
+ throwStorageObjectException("No access! -- " + e.getMessage());
+ }
+ catch (IOException e) {
+ throwStorageObjectException("IOException! -- " + e.getMessage());
+ }
+ catch (InstantiationException e) {
+ throwStorageObjectException("No Instatiation! -- " + e.getMessage());
+ }
+ catch (SQLException sqe) {
+ throwSQLException(sqe, "makeEntityFromResultSet");
+
+ return null;
+ }
+
+ return returnEntity;
+ }
+
+ /**
+ * Inserts an entity into the database.
+ *
+ * @param theEntity
+ * @return der Wert des Primary-keys der eingef?gten Entity
+ */
+ public String insert(Entity theEntity) throws StorageObjectFailure {
+ invalidateStore();
+
+ String returnId = null;
+ Connection con = null;
+ PreparedStatement pstmt = null;
+
+ try {
+ StringBuffer f = new StringBuffer();
+ StringBuffer v = new StringBuffer();
+ String aField;
+ String aValue;
+ boolean firstField = true;
+
+ // make sql-string
+ for (int i = 0; i < getFields().size(); i++) {
+ aField = (String) getFields().get(i);
+
+ if (!aField.equals(primaryKeyField)) {
+ aValue = null;
+
+ // exceptions
+ if (!theEntity.hasFieldValue(aField) && (
+ aField.equals("webdb_create") ||
+ aField.equals("webdb_lastchange"))) {
+ aValue = "NOW()";
+ }
+ else {
+ if (theEntity.hasFieldValue(aField)) {
+ aValue =
+ "'" +
+ JDBCStringRoutines.escapeStringLiteral(theEntity.getFieldValue(aField)) + "'";
+ }
+ }
+
+ // wenn Wert gegeben, dann einbauen
+ if (aValue != null) {
+ if (firstField == false) {
+ f.append(",");
+ v.append(",");
+ }
+ else {
+ firstField = false;
+ }
+
+ f.append(aField);
+ v.append(aValue);
+ }
+ }
+ }
+ // end for
+
+ // insert into db
+ StringBuffer sqlBuf =
+ new StringBuffer("insert into ").append(mainTable).append("(").append(f)
+ .append(") values (").append(v).append(")");
+ String sql = sqlBuf.toString();
+
+ logger.info("INSERT: " + sql);
+ con = obtainConnection();
+ con.setAutoCommit(false);
+ pstmt = con.prepareStatement(sql);
+
+ int ret = pstmt.executeUpdate();
+
+ if (ret == 0) {
+ //insert failed
+ return null;
+ }
+
+// pstmt = con.prepareStatement("select currval('" + + "_id_seq')");
+
+ returnId = getLatestInsertedId(con);
+ theEntity.setId(returnId);
+ }
+ catch (SQLException sqe) {
+ throwSQLException(sqe, "insert");
+ }
+ finally {
+ try {
+ con.setAutoCommit(true);
+ }
+ catch (Exception e) {
+ }
+
+ freeConnection(con, pstmt);
+ }
+
+ /** todo store entity in o_store */
+ return returnId;
+ }
+
+ /**
+ * Updates an entity in the database
+ *
+ * @param theEntity
+ */
+ public void update(Entity theEntity) throws StorageObjectFailure {
+ Connection con = null;
+ PreparedStatement pstmt = null;
+
+ /** todo this is stupid: why do we prepare statement, when we
+ * throw it away afterwards. should be regular statement
+ * update/insert could better be one routine called save()
+ * that chooses to either insert or update depending if we
+ * have a primary key in the entity. i don't know if we
+ * still need the streamed input fields. // rk */
+
+ /** todo extension: check if Entity did change, otherwise we don't need
+ * the roundtrip to the database */
+ /** invalidating corresponding entitylists in o_store*/
+
+ invalidateStore();
+
+ String id = theEntity.getId();
+ String aField;
+ StringBuffer fv = new StringBuffer();
+ boolean firstField = true;
+
+ // build sql statement
+ for (int i = 0; i < getFields().size(); i++) {
+ aField = (String) metadataFields.get(i);
+
+ // only normal cases
+ // todo if entity.hasFieldValue returns false, then the value should be stored as null
+ if (!(aField.equals(primaryKeyField) ||
+ aField.equals("webdb_create") ||
+ aField.equals("webdb_lastchange"))) {
+ if (theEntity.hasFieldValue(aField)) {
+ if (firstField == false) {
+ fv.append(", ");
+ }
+ else {
+ firstField = false;
+ }
+
+ fv.append(aField).append("='").append(JDBCStringRoutines.escapeStringLiteral(theEntity.getFieldValue(aField))).append("'");
+
+ // fv.append(aField).append("='").append(StringUtil.quote((String)theEntity.getFieldValue(aField))).append("'");
+ }
+ }
+ }
+
+ StringBuffer sql =
+ new StringBuffer("update ").append(mainTable).append(" set ").append(fv);
+
+ // exceptions
+ if (metadataFields.contains("webdb_lastchange")) {
+ sql.append(",webdb_lastchange=NOW()");
+ }
+
+ // special case: the webdb_create requires the field in yyyy-mm-dd HH:mm
+ // format so anything extra will be ignored. -mh
+ if (metadataFields.contains("webdb_create") &&
+ theEntity.hasFieldValue("webdb_create")) {
+ // minimum of 10 (yyyy-mm-dd)...
+ if (theEntity.getFieldValue("webdb_create").length() >= 10) {
+ String dateString = theEntity.getFieldValue("webdb_create");
+
+ // if only 10, then add 00:00 so it doesn't throw a ParseException
+ if (dateString.length() == 10) {
+ dateString = dateString + " 00:00";
+ }
+
+ // TimeStamp stuff
+ try {
+ java.util.Date d = userInputDateFormat.parse(dateString);
+// Timestamp tStamp = new Timestamp(d.getTime());
+ sql.append(",webdb_create='" + JDBCStringRoutines.formatDate(d) + "'");
+ }
+ catch (ParseException e) {
+ throw new StorageObjectFailure(e);
+ }
+ }
+ }
+
+ sql.append(" where id=").append(id);
+ logger.info("UPDATE: " + sql);
+
+ try {
+ con = obtainConnection();
+ con.setAutoCommit(false);
+ pstmt = con.prepareStatement(sql.toString());
+
+ pstmt.executeUpdate();
+ }
+ catch (SQLException sqe) {
+ throwSQLException(sqe, "update");
+ }
+ finally {
+ try {
+ con.setAutoCommit(true);
+ }
+ catch (Exception e) {
+ ;
+ }
+
+ freeConnection(con, pstmt);
+ }
+ }
+
+ /*
+ * delete-Operator
+ * @param id des zu loeschenden Datensatzes
+ * @return boolean liefert true zurueck, wenn loeschen erfolgreich war.
+ */
+ public boolean delete(String id) throws StorageObjectFailure {
+ // ostore send notification
+ if (StoreUtil.extendsStorableEntity(theEntityClass)) {
+ String uniqueId = id;
+
+ if (theEntityClass.equals(StorableObjectEntity.class)) {
+ uniqueId += ("@" + mainTable);
+ }
+
+ logger.debug("CACHE: (del) " + id);
+
+ StoreIdentifier search_sid =
+ new StoreIdentifier(theEntityClass,
+ StoreContainerType.STOC_TYPE_ENTITY, uniqueId);
+ o_store.invalidate(search_sid);
+ }
+
+ /** todo could be prepared Statement */
+ Statement stmt = null;
+ Connection con = null;
+ int res = 0;
+ String sql =
+ "delete from " + mainTable + " where " + primaryKeyField + "='" + id + "'";
+
+ logger.debug("DELETE " + sql);
+ try {
+ con = obtainConnection();
+ stmt = con.createStatement();
+ res = stmt.executeUpdate(sql);
+ }
+ catch (SQLException sqe) {
+ throwSQLException(sqe, "delete");
+ }
+ finally {
+ freeConnection(con, stmt);
+ }
+
+ invalidateStore();
+
+ return (res > 0) ? true : false;
+ }
+
+ /**
+ * Deletes entities based on a where clause
+ *
+ * @param aWhereClause
+ * @return
+ * @throws StorageObjectFailure
+ */
+ public int deleteByWhereClause(String aWhereClause) throws StorageObjectFailure {
+ invalidateStore();
+
+ Statement stmt = null;
+ Connection con = null;
+ int res = 0;
+ String sql =
+ "delete from " + mainTable + " where " + aWhereClause;
+
+ //theLog.printInfo("DELETE " + sql);
+ try {
+ con = obtainConnection();
+ stmt = con.createStatement();
+ res = stmt.executeUpdate(sql);
+ }
+ catch (SQLException sqe) {
+ throwSQLException(sqe, "delete");
+ }
+ finally {
+ freeConnection(con, stmt);
+ }
+
+ return res;
+ }
+
+ /* noch nicht implementiert.
+ * @return immer false
+ */
+ public boolean delete(EntityList theEntityList) {
+ return false;
+ }
+
+ /**
+ * Diese Methode fuehrt den Sqlstring <i>sql</i> aus und timed im Logfile.
+ * @param stmt Statemnt
+ * @param sql Sql-String
+ */
+ public ResultSet executeSql(Statement stmt, String sql)
+ throws StorageObjectFailure, SQLException {
+ ResultSet rs;
+ long startTime = System.currentTimeMillis();
+
+ try {
+ rs = stmt.executeQuery(sql);
+
+ logger.info((System.currentTimeMillis() - startTime) + "ms. for: " + sql);
+ }
+ catch (SQLException e) {
+ logger.error(e.getMessage() +"\n" + (System.currentTimeMillis() - startTime) + "ms. for: " + sql);
+ throw e;
+ }
+
+ return rs;
+ }
+
+ private Map processRow(ResultSet aResultSet) throws StorageObjectFailure {
+ try {
+ Map result = new HashMap();
+ ResultSetMetaData metaData = aResultSet.getMetaData();
+ int nrColumns = metaData.getColumnCount();
+ for (int i=0; i<nrColumns; i++) {
+ result.put(metaData.getColumnName(i+1), getValueAsString(aResultSet, i+1, metaData.getColumnType(i+1)));
+ }
+
+ return result;
+ }
+ catch (Throwable e) {
+ throw new StorageObjectFailure(e);
+ }
+ }
+
+ public List executeFreeSql(String sql, int aLimit) throws StorageObjectFailure, StorageObjectExc {
+ Connection connection = null;
+ Statement statement = null;
+ try {
+ List result = new ArrayList();
+ connection = obtainConnection();
+ statement = connection.createStatement();
+ ResultSet resultset = executeSql(statement, sql);
+ try {
+ while (resultset.next() && result.size() < aLimit) {
+ result.add(processRow(resultset));
+ }
+ }
+ finally {
+ resultset.close();
+ }
+
+ return result;
+ }
+ catch (Throwable e) {
+ throw new StorageObjectFailure(e);
+ }
+ finally {
+ if (connection!=null) {
+ freeConnection(connection, statement);
+ }
+ }
+ };
+
+ public Map executeFreeSingleRowSql(String anSqlStatement) throws StorageObjectFailure, StorageObjectExc {
+ try {
+ List resultList = executeFreeSql(anSqlStatement, 1);
+ try {
+ if (resultList.size()>0)
+ return (Map) resultList.get(0);
+ else
+ return null;
+ }
+ finally {
+ }
+ }
+ catch (Throwable t) {
+ throw new StorageObjectFailure(t);
+ }
+ };
+
+ public String executeFreeSingleValueSql(String sql) throws StorageObjectFailure, StorageObjectExc {
+ Map row = executeFreeSingleRowSql(sql);
+
+ if (row==null)
+ return null;
+
+ Iterator i = row.values().iterator();
+ if (i.hasNext())
+ return (String) i.next();
+ else
+ return null;
+ };
+
+ public int getSize(String where) throws SQLException, StorageObjectFailure {
+ return getSize("", null, where);
+ }
+ /**
+ * returns the number of rows in the table
+ */
+ public int getSize(String mainTablePrefix, List extraTables, String where) throws SQLException, StorageObjectFailure {
+
+ long startTime = System.currentTimeMillis();
+
+ String useTable = mainTable;
+ if (mainTablePrefix!=null && mainTablePrefix.trim().length()>0) {
+ useTable+=" "+mainTablePrefix;
+ }
+ StringBuffer countSql =
+ new StringBuffer("select count(*) from ").append(useTable);
+ // append extratables, if necessary
+ if (extraTables!=null) {
+ for (int i=0;i < extraTables.size();i++) {
+ if (!extraTables.get(i).equals("")) {
+ countSql.append( ", " + extraTables.get(i));
+ }
+ }
+ }
+
+ if ((where != null) && (where.length() != 0)) {
+ countSql.append( " where " + where);
+ }
+
+ Connection con = null;
+ Statement stmt = null;
+ int result = 0;
+
+ try {
+ con = obtainConnection();
+ stmt = con.createStatement();
+
+ ResultSet rs = executeSql(stmt, countSql.toString());
+
+ while (rs.next()) {
+ result = rs.getInt(1);
+ }
+ }
+ catch (SQLException e) {
+ logger.error("Database.getSize: " + e.getMessage());
+ }
+ finally {
+ freeConnection(con, stmt);
+ }
+ logger.info((System.currentTimeMillis() - startTime) + "ms. for: " + countSql);
+
+ return result;
+ }
+
+ public int executeUpdate(Statement stmt, String sql)
+ throws StorageObjectFailure, SQLException {
+ int rs;
+ long startTime = System.currentTimeMillis();
+
+ try {
+ rs = stmt.executeUpdate(sql);
+
+ logger.info((System.currentTimeMillis() - startTime) + "ms. for: " + sql);
+ }
+ catch (SQLException e) {
+ logger.error("Failed: " + (System.currentTimeMillis() - startTime) + "ms. for: " + sql);
+ throw e;
+ }
+
+ return rs;
+ }
+
+ public int executeUpdate(String sql)
+ throws StorageObjectFailure, SQLException {
+ int result = -1;
+ long startTime = System.currentTimeMillis();
+ Connection con = null;
+ PreparedStatement pstmt = null;
+
+ try {
+ con = obtainConnection();
+ pstmt = con.prepareStatement(sql);
+ result = pstmt.executeUpdate();
+ }
+ catch (Throwable e) {
+ logger.error("Database.executeUpdate(" + sql + "): " + e.getMessage());
+ throw new StorageObjectFailure("Database.executeUpdate(" + sql + "): " + e.getMessage(), e);
+ }
+ finally {
+ freeConnection(con, pstmt);
+ }
+
+ logger.info((System.currentTimeMillis() - startTime) + "ms. for: " + sql);
+ return result;
+ }
+
+ /**
+ * Wertet ResultSetMetaData aus und setzt interne Daten entsprechend
+ * @param md ResultSetMetaData
+ */
+ private void evalMetaData(ResultSetMetaData md) throws StorageObjectFailure {
+ this.evaluatedMetaData = true;
+ this.metadataFields = new ArrayList();
+ this.metadataLabels = new ArrayList();
+ this.metadataNotNullFields = new ArrayList();
+
+ try {
+ int numFields = md.getColumnCount();
+ this.metadataTypes = new int[numFields];
+
+ String aField;
+ int aType;
+
+ for (int i = 1; i <= numFields; i++) {
+ aField = md.getColumnName(i);
+ metadataFields.add(aField);
+ metadataLabels.add(md.getColumnLabel(i));
+ aType = md.getColumnType(i);
+ metadataTypes[i - 1] = aType;
+
+ if (aField.equals(primaryKeyField)) {
+ }
+
+ if (md.isNullable(i) == ResultSetMetaData.columnNullable) {
+ metadataNotNullFields.add(aField);
+ }
+ }
+ }
+ catch (SQLException e) {
+ throwSQLException(e, "evalMetaData");
+ }
+ }
+
+ /**
+ * Wertet die Metadaten eines Resultsets fuer eine Tabelle aus,
+ * um die alle Columns und Typen einer Tabelle zu ermitteln.
+ */
+ private void get_meta_data() throws StorageObjectFailure {
+ Connection con = null;
+ PreparedStatement pstmt = null;
+ String sql = "select * from " + mainTable + " where 0=1";
+
+ try {
+ con = obtainConnection();
+ pstmt = con.prepareStatement(sql);
+
+ logger.debug("METADATA: " + sql);
+ ResultSet rs = pstmt.executeQuery();
+ evalMetaData(rs.getMetaData());
+ rs.close();
+ }
+ catch (SQLException e) {
+ throwSQLException(e, "get_meta_data");
+ }
+ finally {
+ freeConnection(con, pstmt);
+ }
+ }
+
+ public Connection obtainConnection() throws StorageObjectFailure {
+ try {
+ return MirGlobal.getDatabaseEngine().obtainConnection();
+ }
+ catch (Exception e) {
+ throw new StorageObjectFailure(e);
+ }
+ }
+
+ public void freeConnection(Connection aConnection, Statement aStatement) throws StorageObjectFailure {
+ try {
+ aStatement.close();
+ }
+ catch (Throwable t) {
+ logger.warn("Can't close statemnet: " + t.toString());
+ }
+
+ try {
+ MirGlobal.getDatabaseEngine().releaseConnection(aConnection);
+ }
+ catch (Throwable t) {
+ logger.warn("Can't release connection: " + t.toString());
+ }
+ }
+
+ /**
+ * Wertet SQLException aus und wirft dannach eine StorageObjectException
+ * @param sqe SQLException
+ * @param aFunction Funktonsname, in der die SQLException geworfen wurde
+ */
+ protected void throwSQLException(SQLException sqe, String aFunction) throws StorageObjectFailure {
+ String state = "";
+ String message = "";
+ int vendor = 0;
+
+ if (sqe != null) {
+ state = sqe.getSQLState();
+ message = sqe.getMessage();
+ vendor = sqe.getErrorCode();
+ }
+
+ String information =
+ "SQL Error: " +
+ "state= " + state +
+ ", vendor= " + vendor +
+ ", message=" + message +
+ ", function= " + aFunction;
+
+ logger.error(information);
+
+ throw new StorageObjectFailure(information, sqe);
+ }
+
+ protected void _throwStorageObjectException(Exception e, String aFunction)
+ throws StorageObjectFailure {
+
+ if (e != null) {
+ logger.error(e.getMessage() + aFunction);
+ throw new StorageObjectFailure(aFunction, e);
+ }
+ }
+
+ /**
+ * Loggt Fehlermeldung mit dem Parameter Message und wirft dannach
+ * eine StorageObjectException
+ * @param aMessage Nachricht mit dem Fehler
+ * @exception StorageObjectFailure
+ */
+ void throwStorageObjectException(String aMessage) throws StorageObjectFailure {
+ logger.error(aMessage);
+ throw new StorageObjectFailure(aMessage, null);
+ }
+
+ /**
+ * Invalidates any cached entity list
+ */
+ private void invalidateStore() {
+ // invalidating all EntityLists corresponding with theEntityClass
+ if (StoreUtil.extendsStorableEntity(theEntityClass)) {
+ StoreContainerType stoc_type =
+ StoreContainerType.valueOf(theEntityClass, StoreContainerType.STOC_TYPE_ENTITYLIST);
+ o_store.invalidate(stoc_type);
+ }
+ }
+
+ /**
+ * Retrieves a binary value
+ */
+ public InputStream getBinaryField(String aQuery) throws StorageObjectFailure, SQLException {
+ Connection connection=null;
+ Statement statement=null;
+ InputStream inputStream;
+ InputStream imageInputStream = null;
+
+ try {
+ connection = obtainConnection();
+ try {
+ connection.setAutoCommit(false);
+ statement = connection.createStatement();
+ ResultSet resultSet = executeSql(statement, aQuery);
+
+ if(resultSet!=null) {
+ if (resultSet.next()) {
+ inputStream = resultSet.getBlob(1).getBinaryStream();
+ imageInputStream = new BinaryFieldInputStream(inputStream, connection, statement);
+ }
+ resultSet.close();
+ }
+ }
+ finally {
+ }
+ }
+ catch (Throwable t) {
+ logger.error("EntityImages.getImage failed: " + t.toString());
+ t.printStackTrace(logger.asPrintWriter(LoggerWrapper.DEBUG_MESSAGE));
+
+ try {
+ connection.setAutoCommit(true);
+ }
+ catch (Throwable e) {
+ logger.error("EntityImages.getImage resetting transaction mode failed: " + e.toString());
+ e.printStackTrace(logger.asPrintWriter(LoggerWrapper.DEBUG_MESSAGE));
+ }
+
+ try {
+ freeConnection(connection, statement);
+ }
+ catch (Throwable e) {
+ logger.error("EntityImages.getImage freeing connection failed: " +e.toString());
+ }
+
+ throw new StorageObjectFailure(t);
+ }
+
+ return imageInputStream;
+ }
+
+ /**
+ * Sets a binary value. The query is supposed to contain 1 ? denoting where the
+ * binary value should be inserted.
+ *
+ * e.g. <code>update images set image_data = ? where id= 22</code>
+ */
+ public void setBinaryField(String aQuery, byte aData[]) throws StorageObjectFailure, SQLException {
+ PreparedStatement statement = null;
+ Connection connection = obtainConnection();
+ try {
+ connection.setAutoCommit(false);
+ try {
+ statement = connection.prepareStatement(aQuery);
+ statement.setBinaryStream(1, new ByteArrayInputStream(aData), aData.length);
+ statement.execute();
+ connection.commit();
+ }
+ finally {
+ connection.setAutoCommit(true);
+ }
+ }
+ finally {
+ freeConnection(connection, statement);
+ }
+ }
+
+ /**
+ * a small wrapper class that allows us to store the DB connection resources
+ * that the BlobInputStream is using and free them upon closing of the stream
+ */
+ private class BinaryFieldInputStream extends InputStream {
+ InputStream inputStream;
+ Connection connection;
+ Statement statement;
+
+ public BinaryFieldInputStream(InputStream aBlobInputStream, Connection aConnection, Statement aStatement ) {
+ inputStream = aBlobInputStream;
+ connection = aConnection;
+ statement = aStatement;
+ }
+
+ public void close () throws IOException {
+ inputStream.close();
+ try {
+ connection.setAutoCommit(true);
+ freeConnection(connection, statement);
+ }
+ catch (Exception e) {
+ throw new IOException("close(): "+e.toString());
+ }
+ }
+
+ public int read() throws IOException {
+ return inputStream.read();
+ }
+ }
}
projects / mir.git / blobdiff