X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=source%2Fmir%2Fstorage%2FDatabase.java;h=0f886dbb41a72934d309157a6d19ce7995782702;hb=e44404fac09c8da04b5ef7874160cb91f8fc98a9;hp=973850ae6b9d545c212aca41f0eab58a4460285b;hpb=088627b0d99e94a83bd3596b9c6b4132d0311e0d;p=mir.git diff --git a/source/mir/storage/Database.java b/source/mir/storage/Database.java index 973850ae..0f886dbb 100755 --- a/source/mir/storage/Database.java +++ b/source/mir/storage/Database.java @@ -1,113 +1,164 @@ /* - * put your module comment here + * 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 java.sql.*; -import java.lang.*; -import java.io.*; -import java.util.*; -import freemarker.template.*; -import com.javaexchange.dbConnectionBroker.*; -import mir.storage.StorageObject; -import mir.entity.*; -import mir.misc.*; - +import java.io.ByteArrayInputStream; +import java.io.IOException; +import java.io.InputStream; +import java.io.InputStreamReader; +import java.sql.Connection; +import java.sql.PreparedStatement; +import java.sql.ResultSet; +import java.sql.ResultSetMetaData; +import java.sql.SQLException; +import java.sql.Statement; +import java.sql.Timestamp; +import java.text.ParseException; +import java.text.SimpleDateFormat; +import java.util.ArrayList; +import java.util.Calendar; +import java.util.GregorianCalendar; +import java.util.HashMap; +import java.util.Iterator; +import java.util.List; +import java.util.Map; +import java.util.TimeZone; + +import mir.config.MirPropertiesConfiguration; +import mir.entity.AbstractEntity; +import mir.entity.Entity; +import mir.entity.EntityList; +import mir.entity.StorableObjectEntity; +import mir.log.LoggerWrapper; +import mir.misc.StringUtil; +import mir.storage.store.ObjectStore; +import mir.storage.store.StorableObject; +import mir.storage.store.StoreContainerType; +import mir.storage.store.StoreIdentifier; +import mir.storage.store.StoreUtil; +import mir.util.JDBCStringRoutines; +import mircoders.global.MirGlobal; + +import org.apache.commons.dbcp.DelegatingConnection; +import org.postgresql.PGConnection; +import org.postgresql.largeobject.LargeObject; +import org.postgresql.largeobject.LargeObjectManager; /** - * Diese Klasse implementiert die Zugriffsschicht auf die Datenbank. - * Alle Projektspezifischen Datenbankklassen erben von dieser Klasse. - * In den Unterklassen wird im Minimalfall nur die Tabelle angegeben. - * Im Konfigurationsfile findet sich eine Verweis auf den verwendeten - * Treiber, Host, User und Passwort, ueber den der Zugriff auf die - * Datenbank erfolgt. + * Implements database access. + * + * @version $Id: Database.java,v 1.44.2.27 2005/02/10 16:22:33 rhindes Exp $ + * @author rk * - * @author RK - * @version 16.7.1999 */ -public class Database implements StorageObject { - - protected DbConnectionBroker myBroker; - protected String theTable; - protected String theCoreTable=null; - protected String thePKeyName="id"; - protected int thePKeyType; - protected boolean evaluatedMetaData=false; - protected ArrayList metadataFields,metadataLabels,metadataNotNullFields; - protected int[] metadataTypes; - protected Class theEntityClass; - protected StorageObject myselfDatabase; - protected HashMap cache; - protected SimpleList popupCache=null; - protected boolean hasPopupCache = false; - protected SimpleHash hashCache=null; - protected boolean hasTimestamp=true; - private String database_driver; - private String database_url; - private int defaultLimit; - protected DatabaseAdaptor theAdaptor; - protected Logfile theLog; - protected Connection con; +public class Database { + 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 List fieldNames; + protected int[] fieldTypes; + protected Map fieldNameToType; + + protected Class entityClass; + private int defaultLimit; + + TimeZone timezone; + SimpleDateFormat internalDateFormat; + SimpleDateFormat userInputDateFormat; /** - * Kontruktor bekommt den Filenamen des Konfigurationsfiles übergeben. + * Kontruktor bekommt den Filenamen des Konfigurationsfiles ?bergeben. * Aus diesem file werden Database.Logfile, * Database.Username,Database.Password, * Database.Host und Database.Adaptor - * ausgelesen und ein Broker für die Verbindugen zur Datenbank + * ausgelesen und ein Broker f?r die Verbindugen zur Datenbank * erzeugt. - * - * @param String confFilename Dateiname der Konfigurationsdatei */ - public Database() { - theLog = Logfile.getInstance(MirConfig.getProp("Home") + MirConfig.getProp("Database.Logfile")); - String database_username=MirConfig.getProp("Database.Username"); - String database_password=MirConfig.getProp("Database.Password"); - String database_host=MirConfig.getProp("Database.Host"); - String theAdaptorName=MirConfig.getProp("Database.Adaptor"); + 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 = Class.forName("mir.entity.GenericEntity"); - theAdaptor = (DatabaseAdaptor)Class.forName(theAdaptorName).newInstance(); - defaultLimit = Integer.parseInt(MirConfig.getProp("Database.Limit")); - database_driver=theAdaptor.getDriver(); - database_url=theAdaptor.getURL(database_username,database_password,database_host); - theLog.printDebugInfo("adding Broker with: " +database_driver+":"+database_url ); - MirConfig.addBroker(database_driver,database_url); - myBroker=MirConfig.getBroker(); - } - catch (Exception e){ - theLog.printError("Bei Konstruktion von Database() with " + theAdaptorName + " -- " +e.toString()); + entityClass = 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 zurück, in der eine Datenbankzeile gewrappt - * wird. Wird die Entity-Klasse durch die erbende Klasse nicht überschrieben, - * wird eine mir.entity.GenericEntity erzeugt. - * - * @return Class-Objekt der Entity - */ - public java.lang.Class getEntityClass () { - return theEntityClass; + public java.lang.Class getEntityClass() { + return entityClass; + } + + public Entity createNewEntity() throws StorageObjectFailure { + try { + AbstractEntity result = (AbstractEntity) entityClass.newInstance(); + result.setStorage(this); + + return result; + } + catch (Throwable t) { + throw new StorageObjectFailure(t); + } } /** - * Liefert die Standardbeschränkung von select-Statements zurück, also - * wieviel Datensätze per Default selektiert werden. + * Liefert die Standardbeschr?nkung von select-Statements zur?ck, also + * wieviel Datens?tze per Default selektiert werden. * - * @return Standard-Anzahl der Datensätze + * @return Standard-Anzahl der Datens?tze */ - public int getLimit () { - return defaultLimit; + public int getLimit() { + return defaultLimit; } - /** - * Liefert den Namen des Primary-Keys zurück. Wird die Variable nicht von - * der erbenden Klasse überschrieben, so ist der Wert PKEY - * @return Name des Primary-Keys - */ - public String getIdName () { - return thePKeyName; + public String getIdFieldName() { + return primaryKeyField; } /** @@ -115,393 +166,502 @@ public class Database implements StorageObject { * * @return Name der Tabelle */ - public String getTableName () { - return theTable; + public String getTableName() { + return mainTable; } - /* - * Dient dazu vererbte Tabellen bei objectrelationalen DBMS - * zu speichern, wenn die id einer Tabelle in der parenttabelle verwaltet wird. - * @return liefert theCoreTabel als String zurueck, wenn gesetzt, sonst - * the Table + /** + * 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"; - public String getCoreTable(){ - if (theCoreTable!=null) return theCoreTable; - else return theTable; - } + PreparedStatement statement = aConnection.prepareStatement("select currval('" + primaryKeySequence + "')"); - /** - * Liefert Feldtypen der Felder der Tabelle zurueck (s.a. java.sql.Types) - * @return int-Array mit den Typen der Felder - * @exception StorageObjectException - */ - public int[] getTypes () throws StorageObjectException { - if (metadataTypes == null) - get_meta_data(); - return metadataTypes; + ResultSet rs = statement.executeQuery(); + rs.next(); + return rs.getString(1); } /** - * Liefert eine Liste der Labels der Tabellenfelder - * @return ArrayListe mit Labeln - * @exception StorageObjectException + * Returns a list of field names for this Database */ - public ArrayList getLabels () throws StorageObjectException { - if (metadataLabels == null) - get_meta_data(); - return metadataLabels; - } + public List getFieldNames() throws StorageObjectFailure { + if (fieldNames == null) { + acquireMetaData(); + } - /** - * Liefert eine Liste der Felder der Tabelle - * @return ArrayList mit Feldern - * @exception StorageObjectException - */ - public ArrayList getFields () throws StorageObjectException { - if (metadataFields == null) - get_meta_data(); - return metadataFields; + return fieldNames; } - - /* + /** * Gets value out of ResultSet according to type and converts to String - * @param inValue Wert aus ResultSet. - * @param aType Datenbanktyp. - * @return liefert den Wert als String zurueck. Wenn keine Umwandlung moeglich - * dann /unsupported value/ + * @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 StorageObjectException { + 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: + + 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()) + + 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()) + + 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; + + 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; + + 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: + + case java.sql.Types.CHAR: + case java.sql.Types.VARCHAR: + case java.sql.Types.LONGVARCHAR: outValue = rs.getString(valueIndex); - if (outValue != null) - outValue = StringUtil.encodeHtml(StringUtil.unquote(outValue)); + break; + case java.sql.Types.LONGVARBINARY: outValue = rs.getString(valueIndex); - if (outValue != null) - outValue = StringUtil.encodeHtml(StringUtil.unquote(outValue)); + 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()) { - outValue = timestamp.toString(); + 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 = ""; - theLog.printWarning("Unsupported Datatype: at " + valueIndex + - " (" + aType + ")"); + logger.warn("Unsupported Datatype: at " + valueIndex + " (" + aType + ")"); } } catch (SQLException e) { - throw new StorageObjectException("Could not get Value out of Resultset -- " - + e.toString()); + throw new StorageObjectFailure("Could not get Value out of Resultset -- ", + e); } } - return outValue; + + 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 StorageObjectException { + 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(entityClass)) { + String uniqueId = id; + + if (entityClass.equals(StorableObjectEntity.class)) { + uniqueId += ("@" + mainTable); + } + + StoreIdentifier search_sid = new StoreIdentifier(entityClass, uniqueId); + logger.debug("CACHE: (dbg) looking for sid " + search_sid.toString()); - if (id==null||id.equals("")) - throw new StorageObjectException("id war null"); - if (cache != null && cache.containsKey(id)) - return (Entity)cache.get(id); // wenn cache gesetzt, evtl. kein roundtrip zur Datenbank + Entity hit = (Entity) o_store.use(search_sid); + + if (hit != null) { + return hit; + } + } + + Statement stmt = null; + Connection con = obtainConnection(); + Entity returnEntity = null; - Statement stmt=null;Connection con=getPooledCon(); - Entity returnEntity=null; try { ResultSet rs; - String selectSql = "select * from " + theTable + " where " + thePKeyName + "=" + id; + + /** 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()) + if (rs.next()) { returnEntity = makeEntityFromResultSet(rs); - else theLog.printDebugInfo("Keine daten fuer id: " + id + "in Tabelle" + theTable); + } + else { + logger.warn("No data for id: " + id + " in table " + mainTable); + } + rs.close(); - } else { - theLog.printDebugInfo("No Data for Id " + id + " in Table " + theTable); } - } catch (SQLException sqe){ - throwSQLException(sqe,"selectById"); return null; - } catch (NumberFormatException e) { - theLog.printError("ID ist keine Zahl: " + id); - } finally { - freeConnection(con,stmt); + 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; } /** - * select-Operator um Datensaetze zu bekommen, die key = value erfuellen. - * @param key Datenbankfeld der Bedingung. - * @param value Wert die der key anehmen muss. - * @return EntityList mit den gematchten Entities + * 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 selectByFieldValue(String aField, String aValue) - throws StorageObjectException { + 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); } - /** - * select-Operator um Datensaetze zu bekommen, die key = value erfuellen. - * @param key Datenbankfeld der Bedingung. - * @param value Wert die der key anehmen muss. - * @param offset Gibt an ab welchem Datensatz angezeigt werden soll. - * @return EntityList mit den gematchten Entities - */ - - public EntityList selectByFieldValue(String aField, String aValue, int offset) - throws StorageObjectException { - - return selectByWhereClause(aField + "=" + aValue, offset); + 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 Datensätzen zurück. + * select-Operator liefert eine EntityListe mit den gematchten Datens?tzen zur?ck. * Also offset wird der erste Datensatz genommen. * - * @param wc where-Clause + * @param where where-Clause * @return EntityList mit den gematchten Entities - * @exception StorageObjectException + * @exception StorageObjectFailure */ - public EntityList selectByWhereClause(String where) - throws StorageObjectException { - + public EntityList selectByWhereClause(String where) throws StorageObjectFailure { return selectByWhereClause(where, 0); } - /** - * select-Operator liefert eine EntityListe mit den gematchten Datensätzen zurück. + * select-Operator liefert eine EntityListe mit den gematchten Datens?tzen zur?ck. * Als maximale Anzahl wird das Limit auf der Konfiguration genommen. * - * @param wc where-Clause + * @param whereClause where-Clause * @param offset ab welchem Datensatz. * @return EntityList mit den gematchten Entities - * @exception StorageObjectException + * @exception StorageObjectFailure */ - public EntityList selectByWhereClause(String whereClause, int offset) - throws StorageObjectException { - + public EntityList selectByWhereClause(String whereClause, int offset) throws StorageObjectFailure { return selectByWhereClause(whereClause, null, offset); } /** - * select-Operator liefert eine EntityListe mit den gematchten Datensätzen zurück. + * 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 wc where-Clause - * @param ob orderBy-Clause + * @param where where-Clause + * @param order orderBy-Clause * @return EntityList mit den gematchten Entities - * @exception StorageObjectException + * @exception StorageObjectFailure */ - - public EntityList selectByWhereClause(String where, String order) - throws StorageObjectException { - + 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 Datensätzen zurück. + * select-Operator liefert eine EntityListe mit den gematchten Datens?tzen zur?ck. * Als maximale Anzahl wird das Limit auf der Konfiguration genommen. * - * @param wc where-Clause - * @param ob orderBy-Clause + * @param whereClause where-Clause + * @param orderBy orderBy-Clause * @param offset ab welchem Datensatz * @return EntityList mit den gematchten Entities - * @exception StorageObjectException + * @exception StorageObjectFailure */ - - public EntityList selectByWhereClause(String whereClause, String orderBy, int offset) - throws StorageObjectException { - + public EntityList selectByWhereClause(String whereClause, String orderBy, int offset) throws StorageObjectFailure { return selectByWhereClause(whereClause, orderBy, offset, defaultLimit); } - /** - * select-Operator liefert eine EntityListe mit den gematchten Datensätzen zurück. - * @param wc where-Clause - * @param ob orderBy-Clause + * 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 Datensätze + * @param limit wieviele Datens?tze * @return EntityList mit den gematchten Entities - * @exception StorageObjectException + * @exception StorageObjectFailure */ + public EntityList selectByWhereClause(String aWhereClause, String anOrderByClause, + int offset, int limit) throws StorageObjectFailure { + return selectByWhereClause("", null, aWhereClause, anOrderByClause, offset, limit); + } - public EntityList selectByWhereClause(String wc, String ob, int offset, int limit) - throws StorageObjectException { - // local - EntityList theReturnList=null; - Connection con=null; - Statement stmt=null; - ResultSet rs; - int offsetCount = 0; - int count=0; + /** + * select-Operator returns EntityList with matching rows in Database. + * @param aWhereClause where-Clause + * @param anOrderByClause orderBy-Clause + * @param anOffset ab welchem Datensatz + * @param aLimit wieviele Datens?tze + * @return EntityList mit den gematchten Entities + * @exception StorageObjectFailure + */ + public EntityList selectByWhereClause( + String aMainTablePrefix, List anExtraTables, + String aWhereClause, String anOrderByClause, + int anOffset, int aLimit) throws StorageObjectFailure { + // TODO get rid of emtpy Strings in anExtraTables + // make anExtraTables null, if single empty String in it + // cause StringUtil.splitString puts in emptyString + + if (anExtraTables!=null && ((String) anExtraTables.get(0)).trim().equals("")){ + anExtraTables=null; + } + + String useTable = mainTable; + String selection = "*"; + + if (aMainTablePrefix != null && aMainTablePrefix.trim().length() > 0) { + useTable += " " + aMainTablePrefix; + selection = aMainTablePrefix.trim() + ".*"; + } + + // check o_store for entitylist + // only if no relational select + if (anExtraTables==null) { + if (StoreUtil.extendsStorableEntity(entityClass)) { + StoreIdentifier searchSid = new StoreIdentifier(entityClass, + StoreContainerType.STOC_TYPE_ENTITYLIST, + StoreUtil.getEntityListUniqueIdentifierFor(mainTable, + aWhereClause, anOrderByClause, anOffset, aLimit)); + EntityList hit = (EntityList) o_store.use(searchSid); + + if (hit != null) { + return hit; + } + } + } + + // local + EntityList theReturnList = null; + Connection connection = null; + Statement statement = null; + ResultSet resultSet; // build sql-statement - if (wc != null && wc.length() == 0) { - wc = null; - } - StringBuffer countSql = new StringBuffer("select count(*) from ").append(theTable); - StringBuffer selectSql = new StringBuffer("select * from ").append(theTable); - if (wc != null) { - selectSql.append(" where ").append(wc); - countSql.append(" where ").append(wc); - } - if (ob != null && !(ob.length() == 0)) { - selectSql.append(" order by ").append(ob); - } - if (theAdaptor.hasLimit()) { - if (limit > -1 && offset > -1) { - selectSql.append(" limit "); - if (theAdaptor.reverseLimit()) { - selectSql.append(limit).append(",").append(offset); - } - else { - selectSql.append(offset).append(",").append(limit); + + if ((aWhereClause != null) && (aWhereClause.trim().length() == 0)) { + aWhereClause = null; + } + + StringBuffer selectSql = + new StringBuffer("select "+selection+" from ").append(useTable); + + // append extratables, if necessary + if (anExtraTables!=null) { + for (int i=0;i < anExtraTables.size();i++) { + if (!anExtraTables.get(i).equals("")) { + selectSql.append( ", " + anExtraTables.get(i)); } } } - // execute sql + if (aWhereClause != null) { + selectSql.append(" where ").append(aWhereClause); + } + + if ((anOrderByClause != null) && !(anOrderByClause.trim().length() == 0)) { + selectSql.append(" order by ").append(anOrderByClause); + } + + if ((aLimit > -1) && (anOffset > -1)) { + selectSql.append(" LIMIT ").append(aLimit+1).append(" OFFSET ").append(anOffset); + } + + // execute sql try { - con = getPooledCon(); - stmt = con.createStatement(); - // counting rows - if (theAdaptor.hasLimit()) { - rs = executeSql(stmt, countSql.toString()); - if (rs != null) { - if (rs.next()) - count = rs.getInt(1); - rs.close(); - } - else - theLog.printError("Mh. Konnte nicht zaehlen: " + countSql); - } - // hier select - rs = executeSql(stmt, selectSql.toString()); - if (rs != null) { + connection = obtainConnection(); + statement = connection.createStatement(); + boolean hasMore = false; + + // selecting... + resultSet = executeSql(statement, selectSql.toString()); + + if (resultSet != null) { theReturnList = new EntityList(); - if (evaluatedMetaData == false) { - evalMetaData(rs.getMetaData()); - } Entity theResultEntity; - while (rs.next()) { - theResultEntity = makeEntityFromResultSet(rs); + int position = 0; + while (((aLimit == -1) || (position= limit) { - theReturnList.setPrevBatch(offset - limit); + // now we decide if we have to know an overall count... + theReturnList.setOffset(anOffset); + theReturnList.setWhere(aWhereClause); + theReturnList.setOrder(anOrderByClause); + theReturnList.setStorage(this); + theReturnList.setLimit(aLimit); + + if (hasMore) { + theReturnList.setNextBatch(anOffset + aLimit); } - if (offset + offsetCount < count) { - theReturnList.setNextBatch(offset + limit); + + if (anExtraTables==null && StoreUtil.extendsStorableEntity(entityClass)) { + StoreIdentifier sid = theReturnList.getStoreIdentifier(); + logger.debug("CACHE (add): " + sid.toString()); + o_store.add(sid); } } - } catch (SQLException sqe) { + } + catch (SQLException sqe) { throwSQLException(sqe, "selectByWhereClause"); - } finally { - freeConnection(con, stmt); } - return theReturnList; - } + finally { + try { + if (connection != null) { + freeConnection(connection, statement); + } + } catch (Throwable t) { + } + } - /** - * Bastelt aus einer Zeile der Datenbank ein EntityObjekt. - * - * @param rs Das ResultSetObjekt. - * @return Entity Die Entity. - */ + return theReturnList; + } - public Entity makeEntityFromResultSet (ResultSet rs) throws StorageObjectException { - HashMap theResultHash = new HashMap(); + private Entity makeEntityFromResultSet(ResultSet rs) + throws StorageObjectFailure { + Map theResultHash = new HashMap(); String theResult = null; - int theType; + int type; Entity returnEntity = null; + try { - int size = metadataFields.size(); - for (int i = 0; i < size; i++) { + if (StoreUtil.extendsStorableEntity(entityClass)) { + StoreIdentifier searchSid = StorableObjectEntity.getStoreIdentifier(this, + entityClass, rs); + Entity hit = (Entity) o_store.use(searchSid); + if (hit != null) return hit; + } + + for (int i = 0; i < getFieldNames().size(); i++) { // alle durchlaufen bis nix mehr da - theType = metadataTypes[i]; - if (theType == java.sql.Types.LONGVARBINARY) { - InputStream us = rs.getAsciiStream(i + 1); - if (us != null) { - InputStreamReader is = new InputStreamReader(us); + type = fieldTypes[i]; + + if (type == 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(); } @@ -510,84 +670,79 @@ public class Database implements StorageObject { } } else { - theResult = getValueAsString(rs, (i + 1), theType); + theResult = getValueAsString(rs, (i + 1), type); } + if (theResult != null) { - theResultHash.put(metadataFields.get(i), theResult); + theResultHash.put(getFieldNames().get(i), theResult); } } - if (cache != null && theResultHash.containsKey(thePKeyName) && cache.containsKey((String)theResultHash.get(thePKeyName))) { - //theLog.printDebugInfo("CACHE: (out) "+ theResultHash.get(thePKeyName)+ " :"+theTable); - returnEntity = (Entity)cache.get((String)theResultHash.get(thePKeyName)); - } - else { - if (theEntityClass != null) { - returnEntity = (Entity)theEntityClass.newInstance(); - returnEntity.setValues(theResultHash); - returnEntity.setStorage(myselfDatabase); - if (cache != null) { - //theLog.printDebugInfo("CACHE: ( in) " + returnEntity.getId() + " :"+theTable); - cache.put(returnEntity.getId(), returnEntity); - } - } - else { - throwStorageObjectException("Interner Fehler theEntityClass nicht gesetzt!"); + + if (entityClass != null) { + returnEntity = createNewEntity(); + returnEntity.setFieldValues(theResultHash); + + if (returnEntity instanceof StorableObject) { + logger.debug("CACHE: ( in) " + returnEntity.getId() + " :" + mainTable); + o_store.add(((StorableObject) returnEntity).getStoreIdentifier()); } + } else { + throwStorageObjectException("Internal Error: entityClass not set!"); } - } // try - catch (IllegalAccessException e) { - throwStorageObjectException("Kein Zugriff! -- " + e.toString()); - } catch (IOException e) { - throwStorageObjectException("IOException! -- " + e.toString()); - } catch (InstantiationException e) { - throwStorageObjectException("Keine Instantiiierung! -- " + e.toString()); - } catch (SQLException sqe) { + } + catch (IOException e) { + throwStorageObjectException("IOException! -- " + e.getMessage()); + } + catch (SQLException sqe) { throwSQLException(sqe, "makeEntityFromResultSet"); - return null; + + return null; } - return returnEntity; + + return returnEntity; } /** - * insert-Operator: fügt eine Entity in die Tabelle ein. Eine Spalte WEBDB_CREATE - * wird automatisch mit dem aktuellen Datum gefuellt. + * Inserts an entity into the database. * - * @param theEntity - * @return der Wert des Primary-keys der eingefügten Entity + * @param anEntity + * @return der Wert des Primary-keys der eingef?gten Entity */ - public String insert (Entity theEntity) throws StorageObjectException { + public String insert(Entity anEntity) throws StorageObjectFailure { + invalidateStore(); + String returnId = null; Connection con = null; PreparedStatement pstmt = null; - //cache - invalidatePopupCache(); + try { - HashMap theEntityValues = theEntity.getValues(); - ArrayList streamedInput = theEntity.streamedInput(); StringBuffer f = new StringBuffer(); StringBuffer v = new StringBuffer(); - String aField, aValue; + 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(thePKeyName)) { + for (int i = 0; i < getFieldNames().size(); i++) { + aField = (String) getFieldNames().get(i); + + if (!aField.equals(primaryKeyField)) { aValue = null; - // sonderfaelle - if (aField.equals("webdb_create")) { + + // exceptions + if (!anEntity.hasFieldValue(aField) && ( + aField.equals("webdb_create") || + aField.equals("webdb_lastchange"))) { aValue = "NOW()"; } else { - if (streamedInput != null && streamedInput.contains(aField)) { - aValue = "?"; - } - else { - if (theEntityValues.containsKey(aField)) { - aValue = "'" + StringUtil.quote((String)theEntityValues.get(aField)) - + "'"; + if (anEntity.hasFieldValue(aField)) { + aValue = + "'" + + JDBCStringRoutines.escapeStringLiteral(anEntity.getFieldValue(aField)) + "'"; } - } } + // wenn Wert gegeben, dann einbauen if (aValue != null) { if (firstField == false) { @@ -597,491 +752,738 @@ public class Database implements StorageObject { else { firstField = false; } + f.append(aField); v.append(aValue); } } - } // end for + } + // end for + // insert into db - StringBuffer sqlBuf = new StringBuffer("insert into ").append(theTable).append("(").append(f).append(") values (").append(v).append(")"); + StringBuffer sqlBuf = + new StringBuffer("insert into ").append(mainTable).append("(").append(f) + .append(") values (").append(v).append(")"); String sql = sqlBuf.toString(); - theLog.printInfo("INSERT: " + sql); - con = getPooledCon(); + + logQueryBefore(sql); + con = obtainConnection(); con.setAutoCommit(false); pstmt = con.prepareStatement(sql); - if (streamedInput != null) { - for (int i = 0; i < streamedInput.size(); i++) { - String inputString = (String)theEntityValues.get(streamedInput.get(i)); - pstmt.setBytes(i + 1, inputString.getBytes()); - } - } + int ret = pstmt.executeUpdate(); - if(ret == 0){ + + if (ret == 0) { //insert failed return null; } - pstmt = con.prepareStatement(theAdaptor.getLastInsertSQL((Database)myselfDatabase)); - ResultSet rs = pstmt.executeQuery(); - rs.next(); - returnId = rs.getString(1); - theEntity.setId(returnId); - } catch (SQLException sqe) { + +// pstmt = con.prepareStatement("select currval('" + + "_id_seq')"); + + returnId = getLatestInsertedId(con); + anEntity.setId(returnId); + } + catch (SQLException sqe) { throwSQLException(sqe, "insert"); - } finally { + } + finally { try { con.setAutoCommit(true); - } catch (Exception e) { - ; } + catch (Exception e) { + } + freeConnection(con, pstmt); } - return returnId; + + /** todo store entity in o_store */ + return returnId; } /** - * update-Operator: aktualisiert eine Entity. Eine Spalte WEBDB_LASTCHANGE - * wird automatisch mit dem aktuellen Datum gefuellt. + * Updates an entity in the database * * @param theEntity */ - public void update (Entity theEntity) throws StorageObjectException { + public void update(Entity theEntity) throws StorageObjectFailure { Connection con = null; PreparedStatement pstmt = null; - ArrayList streamedInput = theEntity.streamedInput(); - HashMap theEntityValues = theEntity.getValues(); + + /** 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; - //cache - invalidatePopupCache(); + // build sql statement - for (int i = 0; i < getFields().size(); i++) { - aField = (String)metadataFields.get(i); + for (int i = 0; i < getFieldNames().size(); i++) { + aField = (String) getFieldNames().get(i); + // only normal cases - if (!(aField.equals(thePKeyName) || aField.equals("webdb_create") || - aField.equals("webdb_lastchange") || (streamedInput != null && streamedInput.contains(aField)))) { - if (theEntityValues.containsKey(aField)) { + // 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(StringUtil.quote((String)theEntityValues.get(aField))).append("'"); + + 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(theTable).append(" set ").append(fv); + + StringBuffer sql = + new StringBuffer("update ").append(mainTable).append(" set ").append(fv); + // exceptions - if (metadataFields.contains("webdb_lastchange")) { + if (getFieldNames().contains("webdb_lastchange")) { sql.append(",webdb_lastchange=NOW()"); } - if (streamedInput != null) { - for (int i = 0; i < streamedInput.size(); i++) { - sql.append(",").append(streamedInput.get(i)).append("=?"); + + // special case: the webdb_create requires the field in yyyy-mm-dd HH:mm + // format so anything extra will be ignored. -mh + if (getFieldNames().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); - theLog.printInfo("UPDATE: " + sql); - // execute sql + logQueryBefore(sql.toString()); + try { - con = getPooledCon(); + con = obtainConnection(); con.setAutoCommit(false); pstmt = con.prepareStatement(sql.toString()); - if (streamedInput != null) { - for (int i = 0; i < streamedInput.size(); i++) { - String inputString = (String)theEntityValues.get(streamedInput.get(i)); - pstmt.setBytes(i + 1, inputString.getBytes()); - } - } + pstmt.executeUpdate(); - } catch (SQLException sqe) { + } + catch (SQLException sqe) { throwSQLException(sqe, "update"); - } finally { + } + finally { try { con.setAutoCommit(true); - } catch (Exception e) { - ; } + catch (Exception e) { + + + } + freeConnection(con, pstmt); } } /* - * delete-Operator - * @param id des zu loeschenden Datensatzes - * @return boolean liefert true zurueck, wenn loeschen erfolgreich war. + * delete-Operator + * @param id des zu loeschenden Datensatzes + * @return boolean liefert true zurueck, wenn loeschen erfolgreich war. */ - public boolean delete (String id) throws StorageObjectException { + public boolean delete(String id) throws StorageObjectFailure { + // ostore send notification + if (StoreUtil.extendsStorableEntity(entityClass)) { + String uniqueId = id; + + if (entityClass.equals(StorableObjectEntity.class)) { + uniqueId += ("@" + mainTable); + } + + logger.debug("CACHE: (del) " + id); + + StoreIdentifier search_sid = + new StoreIdentifier(entityClass, + StoreContainerType.STOC_TYPE_ENTITY, uniqueId); + o_store.invalidate(search_sid); + } + + /** todo could be prepared Statement */ Statement stmt = null; Connection con = null; - String sql; int res = 0; - // loeschen des caches - invalidatePopupCache(); - sql = "delete from " + theTable + " where " + thePKeyName + "='" + id + - "'"; - theLog.printInfo("DELETE " + sql); + String sql = + "delete from " + mainTable + " where " + primaryKeyField + "='" + id + "'"; + + logQueryBefore(sql); try { - con = getPooledCon(); + con = obtainConnection(); stmt = con.createStatement(); res = stmt.executeUpdate(sql); - } catch (SQLException sqe) { + } + catch (SQLException sqe) { throwSQLException(sqe, "delete"); - } finally { - freeConnection(con, stmt); } - if (cache != null) { - theLog.printInfo("CACHE: deleted " + id); - cache.remove(id); + finally { + freeConnection(con, stmt); } - return (res > 0) ? true : false; - } - /* noch nicht implementiert. - * @return immer false - */ - public boolean delete (EntityList theEntityList) { - invalidatePopupCache(); - return false; + invalidateStore(); + + return (res > 0) ? true : false; } /** - * Diese Methode sollte ueberschrieben werden, wenn fuer die abgeleitete Database-Klasse - * eine SimpleList mit Standard-Popupdaten erzeugt werden koennen soll. - * @return null + * Deletes entities based on a where clause */ - public SimpleList getPopupData () { - return null; + 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; } - /** - * Holt Daten fuer Popups. - * @param name Name des Feldes. - * @param hasNullValue Wenn true wird eine leerer Eintrag fuer die Popups erzeugt. - * @return SimpleList Gibt freemarker.template.SimpleList zurueck. + /* noch nicht implementiert. + * @return immer false */ - public SimpleList getPopupData (String name, boolean hasNullValue) { - return getPopupData(name, hasNullValue, null); + public boolean delete(EntityList theEntityList) { + return false; } /** - * Holt Daten fuer Popups. - * @param name Name des Feldes. - * @param hasNullValue Wenn true wird eine leerer Eintrag fuer die Popups erzeugt. - * @param where Schraenkt die Selektion der Datensaetze ein. - * @return SimpleList Gibt freemarker.template.SimpleList zurueck. + * Diese Methode fuehrt den Sqlstring sql aus und timed im Logfile. + * @param stmt Statemnt + * @param sql Sql-String */ - public SimpleList getPopupData (String name, boolean hasNullValue, String where) { - return getPopupData(name, hasNullValue, where, null); + public ResultSet executeSql(Statement stmt, String sql) + throws StorageObjectFailure, SQLException { + ResultSet rs; + logQueryBefore(sql); + long startTime = System.currentTimeMillis(); + try { + rs = stmt.executeQuery(sql); + + logQueryAfter(sql, (System.currentTimeMillis() - startTime)); + } + catch (SQLException e) { + logQueryError(sql, (System.currentTimeMillis() - startTime), e); + 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; iList of + * Maps */ - public SimpleList getPopupData (String name, boolean hasNullValue, String where, - String order) { - // caching - if (hasPopupCache && popupCache != null) - return popupCache; - SimpleList simpleList = null; - Connection con = null; - Statement stmt = null; - // build sql - StringBuffer sql = new StringBuffer("select ").append(thePKeyName).append(",").append(name).append(" from ").append(theTable); - if (where != null && !(where.length() == 0)) - sql.append(" where ").append(where); - sql.append(" order by "); - if (order != null && !(order.length() == 0)) - sql.append(order); - else - sql.append(name); - // execute sql + public List executeFreeSql(String sql, int aLimit) throws StorageObjectFailure, StorageObjectExc { + Connection connection = null; + Statement statement = null; try { - con = getPooledCon(); - stmt = con.createStatement(); - ResultSet rs = executeSql(stmt, sql.toString()); - if (rs != null) { - if (evaluatedMetaData == false) - get_meta_data(); - simpleList = new SimpleList(); - SimpleHash popupDict; - if (hasNullValue) { - popupDict = new SimpleHash(); - popupDict.put("key", ""); - popupDict.put("value", "--"); - simpleList.add(popupDict); - } - while (rs.next()) { - popupDict = new SimpleHash(); - popupDict.put("key", getValueAsString(rs, 1, thePKeyType)); - popupDict.put("value", rs.getString(2)); - simpleList.add(popupDict); + 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)); } - rs.close(); } - } catch (Exception e) { - theLog.printDebugInfo(e.toString()); - } finally { - freeConnection(con, stmt); + finally { + resultset.close(); + } + + return result; + } + catch (Throwable e) { + throw new StorageObjectFailure(e); } - if (hasPopupCache) { - popupCache = simpleList; + finally { + if (connection!=null) { + freeConnection(connection, statement); + } } - return simpleList; } /** - * Liefert alle Daten der Tabelle als SimpleHash zurueck. Dies wird verwandt, - * wenn in den Templates ein Lookup-Table benoetigt wird. Sollte nur bei kleinen - * Tabellen Verwendung finden. - * @return SimpleHash mit den Tabellezeilen. + * Executes 1 sql statement and returns the first result row as a Maps + * (null if there wasn't any row) */ - public SimpleHash getHashData () { - if (hashCache == null) { + public Map executeFreeSingleRowSql(String anSqlStatement) throws StorageObjectFailure, StorageObjectExc { + try { + List resultList = executeFreeSql(anSqlStatement, 1); try { - hashCache = HTMLTemplateProcessor.makeSimpleHash(selectByWhereClause("", - -1)); - } catch (StorageObjectException e) { - theLog.printDebugInfo(e.toString()); + if (resultList.size()>0) + return (Map) resultList.get(0); + return null; + } + finally { } } - return hashCache; + catch (Throwable t) { + throw new StorageObjectFailure(t); + } } - /* invalidates the popupCache + /** + * Executes 1 sql statement and returns the first column of the first result row as a Strings + * (null if there wasn't any row) */ - protected void invalidatePopupCache () { + public String executeFreeSingleValueSql(String sql) throws StorageObjectFailure, StorageObjectExc { + Map row = executeFreeSingleRowSql(sql); - /** @todo invalidates toooo much */ - popupCache = null; - hashCache = null; - } + if (row==null) + return null; - /** - * Diese Methode fuehrt den Sqlstring sql aus und timed im Logfile. - * @param stmt Statemnt - * @param sql Sql-String - * @return ResultSet - * @exception StorageObjectException, SQLException - */ - public ResultSet executeSql (Statement stmt, String sql) throws StorageObjectException, - SQLException { - long startTime = (new java.util.Date()).getTime(); - ResultSet rs = stmt.executeQuery(sql); - theLog.printInfo((new java.util.Date().getTime() - startTime) + "ms. for: " - + sql); - return rs; + Iterator i = row.values().iterator(); + if (i.hasNext()) + return (String) i.next(); + return null; } - /** - * Fuehrt Statement stmt aus und liefert Resultset zurueck. Das SQL-Statment wird - * getimed und geloggt. - * @param stmt PreparedStatement mit der SQL-Anweisung - * @return Liefert ResultSet des Statements zurueck. - * @exception StorageObjectException, SQLException - */ - public ResultSet executeSql (PreparedStatement stmt) throws StorageObjectException, - SQLException { - long startTime = (new java.util.Date()).getTime(); - ResultSet rs = stmt.executeQuery(); - theLog.printInfo((new java.util.Date().getTime() - startTime) + "ms."); - return rs; + public int getSize(String where) throws SQLException, StorageObjectFailure { + return getSize("", null, where); } - - /** + /** * returns the number of rows in the table */ - public int getSize(String where) - throws SQLException,StorageObjectException - { - long startTime = (new java.util.Date()).getTime(); - String sql = "SELECT count(*) FROM "+ theTable + " where " + where; - //theLog.printDebugInfo("trying: "+ sql); + public int getSize(String mainTablePrefix, List extraTables, String where) throws SQLException, StorageObjectFailure { + + 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; + logQueryBefore(countSql.toString()); + long startTime = System.currentTimeMillis(); try { - con = getPooledCon(); + con = obtainConnection(); stmt = con.createStatement(); - ResultSet rs = executeSql(stmt,sql); - while(rs.next()){ + + ResultSet rs = executeSql(stmt, countSql.toString()); + + while (rs.next()) { result = rs.getInt(1); } - } catch (SQLException e) { - theLog.printError(e.toString()); - } finally { - freeConnection(con,stmt); } - theLog.printInfo(theTable + " has "+ result +" rows where " + where); - theLog.printInfo((new java.util.Date().getTime() - startTime) + "ms. for: " + sql); + catch (SQLException e) { + logger.error("Database.getSize: " + e.getMessage()); + } + finally { + freeConnection(con, stmt); + } + logQueryAfter(countSql.toString(), (System.currentTimeMillis() - startTime)); + return result; } public int executeUpdate(Statement stmt, String sql) - throws StorageObjectException, SQLException - { - long startTime = (new java.util.Date()).getTime(); - //theLog.printDebugInfo("trying: "+ sql); - int rs = stmt.executeUpdate(sql); - theLog.printInfo((new java.util.Date().getTime() - startTime) + "ms. for: " + sql); + throws StorageObjectFailure, SQLException { + int rs; + + logQueryBefore(sql); + long startTime = System.currentTimeMillis(); + + try { + rs = stmt.executeUpdate(sql); + + logQueryAfter(sql, (System.currentTimeMillis() - startTime)); + } + catch (SQLException e) { + logQueryError(sql, (System.currentTimeMillis() - startTime), e); + throw e; + } + return rs; } public int executeUpdate(String sql) - throws StorageObjectException, SQLException - { - int result=-1; - long startTime = (new java.util.Date()).getTime(); - Connection con=null;PreparedStatement pstmt=null; + throws StorageObjectFailure, SQLException { + int result = -1; + Connection con = null; + PreparedStatement pstmt = null; + + logQueryBefore(sql); + long startTime = System.currentTimeMillis(); try { - con=getPooledCon(); + con = obtainConnection(); pstmt = con.prepareStatement(sql); result = pstmt.executeUpdate(); + logQueryAfter(sql, System.currentTimeMillis() - startTime); + } + catch (Throwable e) { + logQueryError(sql, System.currentTimeMillis() - startTime, e); + throw new StorageObjectFailure("Database.executeUpdate(" + sql + "): " + e.getMessage(), e); + } + finally { + freeConnection(con, pstmt); } - catch (Exception e) {theLog.printDebugInfo("settimage :: setImage gescheitert: "+e.toString());} - finally { freeConnection(con,pstmt); } - theLog.printInfo((new java.util.Date().getTime() - startTime) + "ms. for: " + sql); return result; } /** - * Wertet ResultSetMetaData aus und setzt interne Daten entsprechend - * @param md ResultSetMetaData - * @exception StorageObjectException + * Processes the metadata for the table this Database object is responsible for. */ - private void evalMetaData (ResultSetMetaData md) throws StorageObjectException { - this.evaluatedMetaData = true; - this.metadataFields = new ArrayList(); - this.metadataLabels = new ArrayList(); - this.metadataNotNullFields = new ArrayList(); + private void processMetaData(ResultSetMetaData aMetaData) throws StorageObjectFailure { + fieldNames = new ArrayList(); + fieldNameToType = new HashMap(); + try { - int numFields = md.getColumnCount(); - this.metadataTypes = new int[numFields]; - String aField; - int aType; + int numFields = aMetaData.getColumnCount(); + fieldTypes = new int[numFields]; + 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(thePKeyName)) { - thePKeyType = aType; - } - if (md.isNullable(i) == md.columnNullable) { - metadataNotNullFields.add(aField); - } + fieldNames.add(aMetaData.getColumnName(i)); + fieldTypes[i - 1] = aMetaData.getColumnType(i); + fieldNameToType.put(aMetaData.getColumnName(i), new Integer(aMetaData.getColumnType(i))); } - } catch (SQLException e) { - throwSQLException(e, "evalMetaData"); + } + catch (SQLException e) { + throwSQLException(e, "processMetaData"); } } /** - * Wertet die Metadaten eines Resultsets fuer eine Tabelle aus, - * um die alle Columns und Typen einer Tabelle zu ermitteln. + * Retrieves metadata from the table this Database object represents */ - private void get_meta_data () throws StorageObjectException { - Connection con = null; - PreparedStatement pstmt = null; - String sql = "select * from " + theTable + " where 0=1"; + private void acquireMetaData() throws StorageObjectFailure { + Connection connection = null; + PreparedStatement statement = null; + String sql = "select * from " + mainTable + " where 0=1"; + try { - con = getPooledCon(); - pstmt = con.prepareStatement(sql); - theLog.printInfo("METADATA: " + sql); - ResultSet rs = pstmt.executeQuery(); - evalMetaData(rs.getMetaData()); - rs.close(); - } catch (SQLException e) { - throwSQLException(e, "get_meta_data"); - } finally { - freeConnection(con, pstmt); + connection = obtainConnection(); + statement = connection.prepareStatement(sql); + + logger.debug("METADATA: " + sql); + ResultSet resultSet = statement.executeQuery(); + try { + processMetaData(resultSet.getMetaData()); + } + finally { + resultSet.close(); + } + } + catch (SQLException e) { + throwSQLException(e, "acquireMetaData"); + } + finally { + freeConnection(connection, statement); } } - /** - * Datenbankverbindung wird geschlossen - */ - public void disconnectPool () { + public Connection obtainConnection() throws StorageObjectFailure { try { - myBroker.destroy(100); - } catch (SQLException sqe) { - ; + return MirGlobal.getDatabaseEngine().obtainConnection(); + } + catch (Exception e) { + throw new StorageObjectFailure(e); } } - /** - * Returns Connection-Object out of the PoolBroker. - * - * @return Connection Object. - */ - public Connection getPooledCon () throws StorageObjectException { - if (myBroker != null) { - Connection con = myBroker.getConnection(); - if (con != null) - return con; + public void freeConnection(Connection aConnection, Statement aStatement) throws StorageObjectFailure { + try { + aStatement.close(); + } + catch (Throwable t) { + logger.warn("Can't close statemnet: " + t.toString()); } - throw new StorageObjectException("No connection to database!"); - } - /** - * Connection und StatementObjekt werden geschlossen und an den Connectionpool - * zurückgeben - * @param con Connection zur Datenbank - * @param stmt Statement-Objekt - */ - public void freeConnection (Connection con, Statement stmt) { try { - if (stmt != null) - stmt.close(); - } catch (SQLException e1) { - theLog.printDebugInfo(e1.toString()); - } - if (con != null) - myBroker.freeConnection(con); - else - theLog.printDebugInfo("Con was null!"); + 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 wo Funktonsname, in der die SQLException geworfen wurde - * @exception StorageObjectException + * @param aFunction Funktonsname, in der die SQLException geworfen wurde */ - protected void throwSQLException (SQLException sqe, String wo) throws StorageObjectException { + 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(); } - theLog.printError(state + ": " + vendor + " : " + message + " Funktion: " - + wo); - throw new StorageObjectException((sqe == null) ? "undefined sql exception" : - sqe.toString()); + + 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 message Nachricht mit dem Fehler - * @exception StorageObjectException + * Loggt Fehlermeldung mit dem Parameter Message und wirft dannach + * eine StorageObjectException + * @param aMessage Nachricht mit dem Fehler + * @exception StorageObjectFailure */ - void throwStorageObjectException (String message) throws StorageObjectException { - theLog.printError(message); - throw new StorageObjectException(message); + 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 entityClass + if (StoreUtil.extendsStorableEntity(entityClass)) { + StoreContainerType stoc_type = + StoreContainerType.valueOf(entityClass, 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()) { + if (resultSet.getMetaData().getColumnType(1) == java.sql.Types.BINARY) { + byte[] data = resultSet.getBytes(1); + imageInputStream = new ByteArrayInputStream(data); + } + else { + 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 for a particular field in a record specified by its identifier + */ + public void setBinaryField(String aFieldName, String anObjectId, byte aData[]) throws StorageObjectFailure, SQLException { + PreparedStatement statement = null; + Connection connection = obtainConnection(); + + try { + connection.setAutoCommit(false); + try { + // are we using bytea ? + if (getFieldType(aFieldName) == java.sql.Types.BINARY) { + statement = connection.prepareStatement( + "update " + mainTable + " set " + aFieldName + " = ? where " + getIdFieldName() + "=" + Integer.parseInt(anObjectId)); + statement.setBytes(1, aData); + statement.execute(); + connection.commit(); + } + // or the old oid's + else { + PGConnection postgresqlConnection = (org.postgresql.PGConnection) ((DelegatingConnection) connection).getDelegate(); + LargeObjectManager lobManager = postgresqlConnection.getLargeObjectAPI(); + int oid = lobManager.create(LargeObjectManager.READ | LargeObjectManager.WRITE); + LargeObject obj = lobManager.open(oid, LargeObjectManager.WRITE); // Now open the file File file = + obj.write(aData); + obj.close(); + statement = connection.prepareStatement( + "update " + mainTable + " set " + aFieldName + " = ? where " + getIdFieldName() + "=" + Integer.parseInt(anObjectId)); + statement.setInt(1, oid); + statement.execute(); + connection.commit(); + } + } + finally { + connection.setAutoCommit(true); + } + } + finally { + freeConnection(connection, statement); + } + } + + private void logQueryBefore(String aQuery) { + logger.debug("about to perform QUERY " + aQuery); +// (new Throwable()).printStackTrace(logger.asPrintWriter(LoggerWrapper.DEBUG_MESSAGE)); + } + + private void logQueryAfter(String aQuery, long aTime) { + logger.info("QUERY " + aQuery + " took " + aTime + "ms."); + } + + private void logQueryError(String aQuery, long aTime, Throwable anException) { + logger.error("QUERY " + aQuery + " took " + aTime + "ms, but threw exception " + anException.toString()); + } + + private int getFieldType(String aFieldName) { + if (fieldNameToType == null) { + acquireMetaData(); + } + + return ((Integer) fieldNameToType.get(aFieldName)).intValue(); + } + + + /** + * 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(); + } + } +}