X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=source%2Fmir%2Fstorage%2FDatabase.java;h=f86f043d1209013cf82369e87446bf90f3163ac1;hb=42680c1f9fe3250bcbd0f9ed5d9dee6188333b15;hp=257c1c72b51fd8f0dbbe8b9ff442d8d45baf994c;hpb=c6a2204d8d75293256fd17c07e54971d7672359a;p=mir.git diff --git a/source/mir/storage/Database.java b/source/mir/storage/Database.java index 257c1c72..f86f043d 100755 --- a/source/mir/storage/Database.java +++ b/source/mir/storage/Database.java @@ -1,1172 +1,1185 @@ /* - * put your module comment here + * Copyright (C) 2001-2006 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, + * 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 mir.storage.StorageObject; -import mir.entity.*; -import mir.misc.*; -import com.codestudio.sql.*; -import com.codestudio.util.*; - +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.storage.store.*; +import mir.util.JDBCStringRoutines; +import mir.util.StreamCopier; +import mircoders.global.MirGlobal; +import org.apache.commons.dbcp.DelegatingConnection; +import org.postgresql.PGConnection; +import org.postgresql.largeobject.LargeObject; +import org.postgresql.largeobject.LargeObjectManager; + +import java.io.ByteArrayOutputStream; +import java.io.InputStream; +import java.io.InputStreamReader; +import java.sql.*; +import java.text.ParseException; +import java.text.SimpleDateFormat; +import java.util.*; /** - * 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 1.44.2.37 2006/12/25 20:10:22 zapata Exp $ + * @author rk + * @author Zapata * - * @author RK - * @version 16.7.1999 */ -public class Database implements StorageObject { - - 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; - - /** @todo DatabaseCache will soon be replaced by - * ObjectStore. Points to interweave Database with - * ObjectStore are marked "todo: OS:" below */ - protected DatabaseCache 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 static final SimpleHash POPUP_EMTYLINE=new SimpleHash(); - - static { - // always same object saves a little space - POPUP_EMTYLINE.put("key", ""); POPUP_EMTYLINE.put("value", "--"); - - /** @todo OS: init ObjectStore*/ - } - - /** - * Kontruktor bekommt den Filenamen des Konfigurationsfiles übergeben. - * Aus diesem file werden Database.Logfile, - * Database.Username,Database.Password, - * Database.Host und Database.Adaptor - * ausgelesen und ein Broker für die Verbindugen zur Datenbank - * erzeugt. - * - * @param String confFilename Dateiname der Konfigurationsdatei - */ - public Database() throws StorageObjectException { - theLog = Logfile.getInstance(MirConfig.getProp("Home")+ - MirConfig.getProp("Database.Logfile")); - String theAdaptorName=MirConfig.getProp("Database.Adaptor"); - defaultLimit = Integer.parseInt(MirConfig.getProp("Database.Limit")); - try { - theEntityClass = Class.forName("mir.entity.GenericEntity"); - theAdaptor = (DatabaseAdaptor)Class.forName(theAdaptorName).newInstance(); - } catch (Exception e){ - theLog.printError("Error in Database() constructor with "+ - theAdaptorName + " -- " +e.toString()); - throw new StorageObjectException("Error in Database() constructor with " - +e.toString()); - } - /*String database_username=MirConfig.getProp("Database.Username"); - String database_password=MirConfig.getProp("Database.Password"); - String database_host=MirConfig.getProp("Database.Host"); - try { - 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(); - }*/ - } - - /** - * 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; - } - - /** - * Liefert die Standardbeschränkung von select-Statements zurück, also - * wieviel Datensätze per Default selektiert werden. - * - * @return Standard-Anzahl der Datensätze - */ - 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; - } - - /** - * Liefert den Namen der Tabelle, auf das sich das Datenbankobjekt bezieht. - * - * @return Name der Tabelle - */ - public String getTableName () { - return theTable; - } - - /* - * 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 - */ - - public String getCoreTable(){ - if (theCoreTable!=null) return theCoreTable; - else return theTable; - } - - /** - * 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; - } - - /** - * Liefert eine Liste der Labels der Tabellenfelder - * @return ArrayListe mit Labeln - * @exception StorageObjectException - */ - public ArrayList getLabels () throws StorageObjectException { - if (metadataLabels == null) - get_meta_data(); - return metadataLabels; - } - - /** - * 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; - } - - - /* - * 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/ - */ - private String getValueAsString (ResultSet rs, int valueIndex, int aType) throws StorageObjectException { - 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); - //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: - Timestamp timestamp = (rs.getTimestamp(valueIndex)); - if (!rs.wasNull()) { - outValue = timestamp.toString(); - } - break; - default: - outValue = ""; - theLog.printWarning("Unsupported Datatype: at " + valueIndex + - " (" + aType + ")"); - } - } catch (SQLException e) { - throw new StorageObjectException("Could not get Value out of Resultset -- " - + e.toString()); - } - } - 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 { - - if (id==null||id.equals("")) - throw new StorageObjectException("id war null"); - - /** @todo OS: build StoreIdenfier and check ObjectStore for StoreIdentifier */ - if (cache != null && (cache.containsKey(id) > -1)) - return (Entity)cache.get(id); // wenn cache gesetzt, evtl. kein roundtrip zur Datenbank - - Statement stmt=null;Connection con=getPooledCon(); - Entity returnEntity=null; - try { - ResultSet rs; - /** @todo better prepared statement */ - String selectSql = "select * from " + theTable + " where " + thePKeyName + "=" + id; - stmt = con.createStatement(); - rs = executeSql(stmt, selectSql); - if (rs != null) { - if (evaluatedMetaData==false) evalMetaData(rs.getMetaData()); - if (rs.next()) - returnEntity = makeEntityFromResultSet(rs); - else theLog.printDebugInfo("Keine daten fuer id: " + id + "in Tabelle" + theTable); - 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); } - - /** @todo OS: Entity should be saved in ostore */ - 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 - */ - public EntityList selectByFieldValue(String aField, String aValue) - throws StorageObjectException - { - 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); - } - - - /** - * select-Operator liefert eine EntityListe mit den gematchten Datensätzen zurück. - * Also offset wird der erste Datensatz genommen. - * - * @param wc where-Clause - * @return EntityList mit den gematchten Entities - * @exception StorageObjectException - */ - public EntityList selectByWhereClause(String where) - throws StorageObjectException - { - return selectByWhereClause(where, 0); - } - - - /** - * select-Operator liefert eine EntityListe mit den gematchten Datensätzen zurück. - * Als maximale Anzahl wird das Limit auf der Konfiguration genommen. - * - * @param wc where-Clause - * @param offset ab welchem Datensatz. - * @return EntityList mit den gematchten Entities - * @exception StorageObjectException - */ - public EntityList selectByWhereClause(String whereClause, int offset) - throws StorageObjectException - { - return selectByWhereClause(whereClause, null, offset); - } - - - /** - * select-Operator liefert eine EntityListe mit den gematchten Datensätzen zurück. - * 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 - * @return EntityList mit den gematchten Entities - * @exception StorageObjectException - */ - - public EntityList selectByWhereClause(String where, String order) - throws StorageObjectException { - return selectByWhereClause(where, order, 0); - } - - - /** - * select-Operator liefert eine EntityListe mit den gematchten Datensätzen zurück. - * Als maximale Anzahl wird das Limit auf der Konfiguration genommen. - * - * @param wc where-Clause - * @param ob orderBy-Clause - * @param offset ab welchem Datensatz - * @return EntityList mit den gematchten Entities - * @exception StorageObjectException - */ - - public EntityList selectByWhereClause(String whereClause, String orderBy, int offset) - throws StorageObjectException { - return selectByWhereClause(whereClause, orderBy, offset, defaultLimit); - } - - - /** - * select-Operator liefert eine EntityListe mit den gematchten Datensätzen zurück. - * @param wc where-Clause - * @param ob orderBy-Clause - * @param offset ab welchem Datensatz - * @param limit wieviele Datensätze - * @return EntityList mit den gematchten Entities - * @exception StorageObjectException - */ - - 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, count=0; - - // build sql-statement - - /** @todo count sql string should only be assembled if we really count - * see below at the end of method //rk */ - - 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); - } - } - } - - /** @todo OS: make StoreIdentifier and ask Ostore*/ - - // execute sql - try { - con = getPooledCon(); - 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 - if (!(theAdaptor.hasLimit())) 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) { - /** @todo counting should be deffered to entitylist - * getSize() should be used */ - rs = executeSql(stmt, countSql.toString()); - if (rs != null) { - if ( rs.next() ) count = rs.getInt(1); - rs.close(); - } - else theLog.printError("Could not count: " + countSql); - } - } - theReturnList.setCount(count); - theReturnList.setOffset(offset); - theReturnList.setWhere(wc); - theReturnList.setOrder(ob); - if (offset >= limit) { - theReturnList.setPrevBatch(offset - limit); - } - if (offset + offsetCount < count) { - theReturnList.setNextBatch(offset + limit); - } - } - } - catch (SQLException sqe) { - throwSQLException(sqe, "selectByWhereClause"); - } - finally { - freeConnection(con, stmt); - } - - return theReturnList; - } - - - /** - * Bastelt aus einer Zeile der Datenbank ein EntityObjekt. - * - * @param rs Das ResultSetObjekt. - * @return Entity Die Entity. - */ - private Entity makeEntityFromResultSet (ResultSet rs) - throws StorageObjectException - { - /** @todo OS: get Pkey from ResultSet and consult ObjectStore */ - HashMap theResultHash = new HashMap(); - String theResult = null; - int theType; - Entity returnEntity = null; - try { - 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) { - InputStream us = rs.getAsciiStream(i + 1); - if (us != null) { - InputStreamReader is = new InputStreamReader(us); - 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); - } - } - - /** @todo why fetching all data (above) and then consulting the - * cache? we should fetch pkeyname first // rk */ - if (cache != null && theResultHash.containsKey(thePKeyName) && - (cache.containsKey((String)theResultHash.get(thePKeyName)) > -1)) { - 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); - /** @todo put element into ObjectStore */ - cache.put(returnEntity.getId(), returnEntity); - } - } else { - throwStorageObjectException("Internal Error: theEntityClass not set!"); - } - } - } 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) { - throwSQLException(sqe, "makeEntityFromResultSet"); - return null; - } - return returnEntity; - } - - /** - * insert-Operator: fügt eine Entity in die Tabelle ein. Eine Spalte WEBDB_CREATE - * wird automatisch mit dem aktuellen Datum gefuellt. - * - * @param theEntity - * @return der Wert des Primary-keys der eingefügten Entity - */ - public String insert (Entity theEntity) throws StorageObjectException { - String returnId = null; - Connection con = null; - PreparedStatement pstmt = null; - //cache - invalidatePopupCache(); - /** @todo OS: if Entity is StorableObject, invalidate in ObjectStore - * careful: Entity has no id yet! */ - try { - ArrayList streamedInput = theEntity.streamedInput(); - StringBuffer f = new StringBuffer(); - StringBuffer v = new StringBuffer(); - String aField, aValue; - boolean firstField = true; - // make sql-string - for (int i = 0; i < getFields().size(); i++) { - aField = (String)getFields().get(i); - if (!aField.equals(thePKeyName)) { - aValue = null; - // sonderfaelle - if (aField.equals("webdb_create")) { - aValue = "NOW()"; - } - else { - if (streamedInput != null && streamedInput.contains(aField)) { - aValue = "?"; - } - else { - if (theEntity.hasValueForField(aField)) { - aValue = "'" + StringUtil.quote((String)theEntity.getValue(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(theTable).append("(").append(f).append(") values (").append(v).append(")"); - String sql = sqlBuf.toString(); - theLog.printInfo("INSERT: " + sql); - con = getPooledCon(); - con.setAutoCommit(false); - pstmt = con.prepareStatement(sql); - if (streamedInput != null) { - for (int i = 0; i < streamedInput.size(); i++) { - String inputString = (String)theEntity.getValue((String)streamedInput.get(i)); - pstmt.setBytes(i + 1, inputString.getBytes()); - } - } - int ret = pstmt.executeUpdate(); - 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) { - throwSQLException(sqe, "insert"); - } finally { - try { - con.setAutoCommit(true); - } catch (Exception e) { - ; - } - freeConnection(con, pstmt); - } - return returnId; - } - - /** - * update-Operator: aktualisiert eine Entity. Eine Spalte WEBDB_LASTCHANGE - * wird automatisch mit dem aktuellen Datum gefuellt. - * - * @param theEntity - */ - public void update (Entity theEntity) throws StorageObjectException { - Connection con = 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 */ - /** @todo OS: invalidate in Ostore if Entity is StorableObject */ - PreparedStatement pstmt = null; - ArrayList streamedInput = theEntity.streamedInput(); - 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); - // only normal cases - if (!(aField.equals(thePKeyName) || aField.equals("webdb_create") || - aField.equals("webdb_lastchange") || (streamedInput != null && streamedInput.contains(aField)))) { - if (theEntity.hasValueForField(aField)) { - if (firstField == false) { - fv.append(", "); - } - else { - firstField = false; - } - fv.append(aField).append("='").append(StringUtil.quote((String)theEntity.getValue(aField))).append("'"); - } - } - } - StringBuffer sql = new StringBuffer("update ").append(theTable).append(" set ").append(fv); - // exceptions - if (metadataFields.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("=?"); - } - } - sql.append(" where id=").append(id); - theLog.printInfo("UPDATE: " + sql); - // execute sql - try { - con = getPooledCon(); - con.setAutoCommit(false); - pstmt = con.prepareStatement(sql.toString()); - if (streamedInput != null) { - for (int i = 0; i < streamedInput.size(); i++) { - String inputString = theEntity.getValue((String)streamedInput.get(i)); - pstmt.setBytes(i + 1, inputString.getBytes()); - } - } - 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 StorageObjectException { - Statement stmt = null; - Connection con = null; - String sql; - int res = 0; - // loeschen des caches - invalidatePopupCache(); - /** @todo OS: invalidate if StorableObject */ - /** @todo could be prepared Statement */ - sql = "delete from " + theTable + " where " + thePKeyName + "='" + id + - "'"; - theLog.printInfo("DELETE " + sql); - try { - con = getPooledCon(); - stmt = con.createStatement(); - res = stmt.executeUpdate(sql); - } catch (SQLException sqe) { - throwSQLException(sqe, "delete"); - } finally { - freeConnection(con, stmt); - } - /** @todo should take place before we delete */ - if (cache != null) { - theLog.printInfo("CACHE: deleted " + id); - cache.remove(id); - } - return (res > 0) ? true : false; - } - - /* noch nicht implementiert. - * @return immer false - */ - public boolean delete (EntityList theEntityList) { - invalidatePopupCache(); - return false; - } - - /** - * Diese Methode sollte ueberschrieben werden, wenn fuer die abgeleitete Database-Klasse - * eine SimpleList mit Standard-Popupdaten erzeugt werden koennen soll. - * @return null - */ - public SimpleList getPopupData () throws StorageObjectException { - return null; - } - - /** - * 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. - */ - public SimpleList getPopupData (String name, boolean hasNullValue) - throws StorageObjectException { - return getPopupData(name, hasNullValue, null); - } - - /** - * 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. - */ - public SimpleList getPopupData (String name, boolean hasNullValue, String where) throws StorageObjectException { - return getPopupData(name, hasNullValue, where, null); - } - - /** - * 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. - * @param order Gibt ein Feld als Sortierkriterium an. - * @return SimpleList Gibt freemarker.template.SimpleList zurueck. - */ - public SimpleList getPopupData (String name, boolean hasNullValue, String where, String order) throws StorageObjectException { - // 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 - try { - con = getPooledCon(); - } catch (Exception e) { - throw new StorageObjectException(e.toString()); - } - try { - stmt = con.createStatement(); - ResultSet rs = executeSql(stmt, sql.toString()); - - if (rs != null) { - if (!evaluatedMetaData) get_meta_data(); - simpleList = new SimpleList(); - // if popup has null-selector - if (hasNullValue) simpleList.add(POPUP_EMTYLINE); - - SimpleHash popupDict; - while (rs.next()) { - popupDict = new SimpleHash(); - popupDict.put("key", getValueAsString(rs, 1, thePKeyType)); - popupDict.put("value", rs.getString(2)); - simpleList.add(popupDict); - } - rs.close(); - } - } catch (Exception e) { - theLog.printError("getPopupData: "+e.toString()); - throw new StorageObjectException(e.toString()); - } finally { - freeConnection(con, stmt); - } - - if (hasPopupCache) popupCache = simpleList; - 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. - */ - public SimpleHash getHashData () { - /** @todo dangerous! this should have a flag to be enabled, otherwise - * very big Hashes could be returned */ - if (hashCache == null) { - try { - hashCache = HTMLTemplateProcessor.makeSimpleHash(selectByWhereClause("", - -1)); - } catch (StorageObjectException e) { - theLog.printDebugInfo(e.toString()); - } - } - return hashCache; - } - - /* invalidates the popupCache - */ - protected void invalidatePopupCache () { - /** @todo invalidates toooo much */ - popupCache = null; - hashCache = null; - } - - /** - * Diese Methode fuehrt den Sqlstring sql aus und timed im Logfile. - * @param stmt Statemnt - * @param sql Sql-String - * @return ResultSet - * @exception StorageObjectException - */ - public ResultSet executeSql (Statement stmt, String sql) - throws StorageObjectException, SQLException - { - long startTime = System.currentTimeMillis(); - ResultSet rs; - try { - rs = stmt.executeQuery(sql); - theLog.printInfo((System.currentTimeMillis() - startTime) + "ms. for: " - + sql); - } - catch (SQLException e) - { - theLog.printDebugInfo("Failed: " + (System.currentTimeMillis() - - startTime) + "ms. for: "+ sql); - throw e; - } - - return rs; - } - - /** - * 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; - } - - /** - * returns the number of rows in the table - */ - public int getSize(String where) - throws SQLException,StorageObjectException - { - long startTime = System.currentTimeMillis(); - String sql = "SELECT count(*) FROM "+ theTable + " where " + where; - Connection con = null; - Statement stmt = null; - int result = 0; - - try { - con = getPooledCon(); - stmt = con.createStatement(); - ResultSet rs = executeSql(stmt,sql); - 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((System.currentTimeMillis() - startTime) + "ms. for: " - + sql); - return result; - } - - public int executeUpdate(Statement stmt, String sql) - throws StorageObjectException, SQLException - { - int rs; - long startTime = (new java.util.Date()).getTime(); - try - { - rs = stmt.executeUpdate(sql); - theLog.printInfo((new java.util.Date().getTime() - startTime) + "ms. for: " - + sql); - } - catch (SQLException e) - { - theLog.printDebugInfo("Failed: " + (new java.util.Date().getTime() - - startTime) + "ms. for: "+ sql); - 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; - try { - con=getPooledCon(); - pstmt = con.prepareStatement(sql); - result = pstmt.executeUpdate(); - } - catch (Exception e) { - theLog.printDebugInfo("settimage :: setImage gescheitert: "+e.toString()); - throw new StorageObjectException("executeUpdate failed: "+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 - */ - private void evalMetaData (ResultSetMetaData md) - throws StorageObjectException { - - 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(thePKeyName)) { - thePKeyType = aType; - } - if (md.isNullable(i) == md.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 StorageObjectException { - Connection con = null; - PreparedStatement pstmt = null; - String sql = "select * from " + theTable + " 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); - } - } - - - public Connection getPooledCon() throws StorageObjectException { - /* @todo , doublecheck but I'm pretty sure that this is unnecessary. -mh - try{ - Class.forName("com.codestudio.sql.PoolMan").newInstance(); - } catch (Exception e){ - throw new StorageObjectException("Could not find the PoolMan Driver" - +e.toString()); - }*/ - Connection con = null; - try{ - con = SQLManager.getInstance().requestConnection(); - } catch(SQLException e){ - theLog.printError("could not connect to the database "+e.toString()); - System.err.println("could not connect to the database "+e.toString()); - throw new StorageObjectException("Could not connect to the database"+ - e.toString()); - } - return con; - } - - public void freeConnection (Connection con, Statement stmt) - throws StorageObjectException { - SQLManager.getInstance().closeStatement(stmt); - SQLManager.getInstance().returnConnection(con); - } - - /** - * Wertet SQLException aus und wirft dannach eine StorageObjectException - * @param sqe SQLException - * @param wo Funktonsname, in der die SQLException geworfen wurde - * @exception StorageObjectException - */ - protected void throwSQLException (SQLException sqe, String wo) - throws StorageObjectException { - 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()); - } - - protected void _throwStorageObjectException (Exception e, String wo) - throws StorageObjectException { - if (e != null) { - theLog.printError(e.toString()+ wo); - throw new StorageObjectException(wo + e.toString()); - } else { - theLog.printError(wo); - throw new StorageObjectException(wo); - } - - } - - /** - * Loggt Fehlermeldung mit dem Parameter Message und wirft dannach - * eine StorageObjectException - * @param message Nachricht mit dem Fehler - * @exception StorageObjectException - */ - void throwStorageObjectException (String message) - throws StorageObjectException { - _throwStorageObjectException(null, message); - } +public class Database { + private static final int DEFAULT_LIMIT = 20; + private static final Class GENERIC_ENTITY_CLASS = StorableObjectEntity.class; + protected static final ObjectStore o_store = ObjectStore.getInstance(); + + protected LoggerWrapper logger; + + protected String mainTable; + protected String primaryKeyField = "id"; + + private List fieldNames; + private int[] fieldTypes; + private Map fieldNameToType; + + protected Class entityClass; + + // + private Set binaryFields; + + private TimeZone timezone; + private SimpleDateFormat userInputDateFormat; + + public Database() throws DatabaseFailure { + MirPropertiesConfiguration configuration = MirPropertiesConfiguration.instance(); + logger = new LoggerWrapper("Database"); + timezone = TimeZone.getTimeZone(configuration.getString("Mir.DefaultTimezone")); -} + userInputDateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm"); + userInputDateFormat.setTimeZone(timezone); + + binaryFields = new HashSet(); + + String adapterName = configuration.getString("Database.Adaptor"); + + try { + entityClass = GENERIC_ENTITY_CLASS; + } + catch (Throwable e) { + logger.error("Error in Database() constructor with " + adapterName + " -- " + e.getMessage()); + throw new DatabaseFailure("Error in Database() constructor.", e); + } + } + + public Class getEntityClass() { + return entityClass; + } + public Entity createNewEntity() throws DatabaseFailure { + try { + AbstractEntity result = (AbstractEntity) entityClass.newInstance(); + result.setStorage(this); + return result; + } + catch (Throwable t) { + throw new DatabaseFailure(t); + } + } + public String getIdFieldName() { + return primaryKeyField; + } + + public String getTableName() { + return mainTable; + } + + /** + * Returns a list of field names for this Database + */ + public List getFieldNames() throws DatabaseFailure { + if (fieldNames == null) { + acquireMetaData(); + } + + return fieldNames; + } + + public boolean hasField(String aFieldName) { + return getFieldNames().contains(aFieldName); + } + + /** + * Gets value out of ResultSet according to type and converts to String + * + * @param aResultSet ResultSet. + * @param aType a type from java.sql.Types.* + * @param aFieldIndex index in ResultSet + * @return returns the value as String. If no conversion is possible + * /unsupported value/ is returned + */ + private String getValueAsString(ResultSet aResultSet, int aFieldIndex, int aType) + throws DatabaseFailure { + String outValue = null; + + if (aResultSet != null) { + try { + switch (aType) { + case java.sql.Types.BIT: + outValue = (aResultSet.getBoolean(aFieldIndex) == 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 = aResultSet.getInt(aFieldIndex); + + if (!aResultSet.wasNull()) { + outValue = new Integer(out).toString(); + } + + break; + + case java.sql.Types.NUMERIC: + long outl = aResultSet.getLong(aFieldIndex); + + if (!aResultSet.wasNull()) { + outValue = new Long(outl).toString(); + } + + break; + + case java.sql.Types.REAL: + + float tempf = aResultSet.getFloat(aFieldIndex); + + if (!aResultSet.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 = aResultSet.getDouble(aFieldIndex); + + if (!aResultSet.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 = aResultSet.getString(aFieldIndex); + + break; + + case java.sql.Types.LONGVARBINARY: + outValue = aResultSet.getString(aFieldIndex); + + 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 = (aResultSet.getTimestamp(aFieldIndex)); + + if (!aResultSet.wasNull()) { + java.util.Date date = new java.util.Date(timestamp.getTime()); + outValue = DatabaseHelper.convertDateToInternalRepresenation(date); + } + + break; + + default: + outValue = ""; + logger.warn("Unsupported Datatype: at " + aFieldIndex + " (" + aType + ")"); + } + } + catch (SQLException e) { + throw new DatabaseFailure("Could not get Value out of Resultset -- ", + e); + } + } + + return outValue; + } + + /** + * Return an entity specified by id, or null if no such + * entity exists. + */ + public Entity selectById(String anId) throws DatabaseExc { + if ((anId == null) || anId.equals("")) { + throw new DatabaseExc("Database.selectById: Missing id"); + } + + // ask object store for object + if (StoreUtil.extendsStorableEntity(entityClass)) { + String uniqueId = anId; + + if (entityClass.equals(StorableObjectEntity.class)) { + uniqueId += ("@" + mainTable); + } + + StoreIdentifier search_sid = new StoreIdentifier(entityClass, uniqueId); + logger.debug("CACHE: (dbg) looking for sid " + search_sid.toString()); + + Entity hit = (Entity) o_store.use(search_sid); + + if (hit != null) { + return hit; + } + } + + Connection con = obtainConnection(); + Entity returnEntity = null; + PreparedStatement statement = null; + + try { + ResultSet rs; + String query = "select * from " + mainTable + " where " + primaryKeyField + " = ?"; + + statement = con.prepareStatement(query); + statement.setString(1, anId); + + logQueryBefore(query); + + long startTime = System.currentTimeMillis(); + try { + rs = statement.executeQuery(); + + logQueryAfter(query, (System.currentTimeMillis() - startTime)); + } + catch (SQLException e) { + logQueryError(query, (System.currentTimeMillis() - startTime), e); + throw e; + } + + if (rs != null) { + if (rs.next()) { + returnEntity = makeEntityFromResultSet(rs); + } + else { + logger.warn("No data for id: " + anId + " in table " + mainTable); + } + + rs.close(); + } + else { + logger.warn("No Data for Id " + anId + " in Table " + mainTable); + } + } + catch (Throwable e) { + throw new DatabaseFailure(e); + } + finally { + freeConnection(con, statement); + } + + return returnEntity; + } + + public EntityList selectByWhereClauseWithExtraTables(String mainTablePrefix, List extraTables, String aWhereClause) throws DatabaseExc, DatabaseFailure { + return selectByWhereClause( mainTablePrefix, extraTables, aWhereClause, "", 0, DEFAULT_LIMIT); + } + + public EntityList selectByFieldValue(String aField, String aValue) throws DatabaseExc, DatabaseFailure { + return selectByFieldValue(aField, aValue, 0); + } + + public EntityList selectByFieldValue(String aField, String aValue, int offset) throws DatabaseExc, DatabaseFailure { + return selectByWhereClause(aField + "='" + JDBCStringRoutines.escapeStringLiteral(aValue)+"'", offset); + } + + public EntityList selectByWhereClause(String where) throws DatabaseExc, DatabaseFailure { + return selectByWhereClause(where, 0); + } + + public EntityList selectByWhereClause(String whereClause, int offset) throws DatabaseExc, DatabaseFailure { + return selectByWhereClause(whereClause, null, offset); + } + + public EntityList selectByWhereClause(String mainTablePrefix, List extraTables, String where, String order) throws DatabaseExc, DatabaseFailure { + return selectByWhereClause(mainTablePrefix, extraTables, where, order, 0, DEFAULT_LIMIT); + } + + public EntityList selectByWhereClause(String whereClause, String orderBy, int offset) throws DatabaseExc, DatabaseFailure { + return selectByWhereClause(whereClause, orderBy, offset, DEFAULT_LIMIT); + } + + public EntityList selectByWhereClause(String aWhereClause, String anOrderByClause, + int offset, int limit) throws DatabaseExc, DatabaseFailure { + return selectByWhereClause("", null, aWhereClause, anOrderByClause, offset, limit); + } + + public EntityList selectByWhereClause( + String aMainTablePrefix, List anExtraTables, + String aWhereClause, String anOrderByClause, + int anOffset, int aLimit) throws DatabaseExc, DatabaseFailure { + + if (anExtraTables!=null && ((String) anExtraTables.get(0)).trim().equals("")){ + anExtraTables=null; + } + + // 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; + } + } + } + + RecordRetriever retriever = new RecordRetriever(mainTable, aMainTablePrefix); + + EntityList result = null; + Connection connection = null; + + if (anExtraTables!=null) { + Iterator i = anExtraTables.iterator(); + while (i.hasNext()) { + String table = (String) i.next(); + if (!"".equals(table)) { + retriever.addExtraTable(table); + } + } + } + + if (aWhereClause != null) { + retriever.appendWhereClause(aWhereClause); + } + + if ((anOrderByClause != null) && !(anOrderByClause.trim().length() == 0)) { + retriever.appendOrderByClause(anOrderByClause); + } + + if (anOffset>-1 && aLimit>-1) { + retriever.setLimit(aLimit+1); + retriever.setOffset(anOffset); + } + + Iterator i = getFieldNames().iterator(); + while (i.hasNext()) { + retriever.addField((String) i.next()); + } + + // execute sql + try { + connection = obtainConnection(); + ResultSet resultSet = retriever.execute(connection); + + boolean hasMore = false; + + if (resultSet != null) { + result = new EntityList(); + Entity entity; + int position = 0; + + while (((aLimit == -1) || (position 0) { + theResultString.append(data, 0, len); + } + + is.close(); + theResult = theResultString.toString(); + } + else { + theResult = null; + } + } + else { + theResult = getValueAsString(rs, (i + 1), type); + } + + if (theResult != null) { + fields.put(getFieldNames().get(i), theResult); + } + } + + if (entityClass != null) { + returnEntity = createNewEntity(); + returnEntity.setFieldValues(fields); + + if (returnEntity instanceof StorableObject) { + logger.debug("CACHE: ( in) " + returnEntity.getId() + " :" + mainTable); + o_store.add(((StorableObject) returnEntity).getStoreIdentifier()); + } + } + else { + throw new DatabaseExc("Internal Error: entityClass not set!"); + } + } + catch (Throwable e) { + throw new DatabaseFailure(e); + } + + return returnEntity; + } + + /** + * Inserts an entity into the database. + * + * @param anEntity + * @return the value of the primary key of the inserted record + */ + public String insert(Entity anEntity) throws DatabaseFailure { + invalidateStore(); + + RecordInserter inserter = + new RecordInserter(mainTable, getPrimaryKeySequence()); + + String returnId = null; + Connection con = null; + + try { + String fieldName; + + // make sql-string + for (int i = 0; i < getFieldNames().size(); i++) { + fieldName = (String) getFieldNames().get(i); + + if (!fieldName.equals(primaryKeyField)) { + // exceptions + if (!anEntity.hasFieldValue(fieldName) && ( + fieldName.equals("webdb_create") || + fieldName.equals("webdb_lastchange"))) { + inserter.assignVerbatim(fieldName, "now()"); + } + else { + if (anEntity.hasFieldValue(fieldName)) { + inserter.assignString(fieldName, anEntity.getFieldValue(fieldName)); + } + } + } + } + + con = obtainConnection(); + returnId = inserter.execute(con); + + anEntity.setId(returnId); + } + finally { + freeConnection(con); + } + + return returnId; + } + + /** + * Updates an entity in the database + * + * @param theEntity + */ + public void update(Entity theEntity) throws DatabaseFailure { + invalidateStore(); + + RecordUpdater generator = new RecordUpdater(getTableName(), theEntity.getId()); + + // build sql statement + for (int i = 0; i < getFieldNames().size(); i++) { + String field = (String) getFieldNames().get(i); + + if (!(field.equals(primaryKeyField) || + "webdb_create".equals(field) || + "webdb_lastchange".equals(field) || + binaryFields.contains(field))) { + + if (theEntity.hasFieldValue(field)) { + generator.assignString(field, theEntity.getFieldValue(field)); + } + } + } + + // exceptions + if (hasField("webdb_lastchange")) { + generator.assignVerbatim("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 (hasField("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); + generator.assignDateTime("webdb_create", d); + } + catch (ParseException e) { + throw new DatabaseFailure(e); + } + } + } + Connection connection = null; + + try { + connection = obtainConnection(); + generator.execute(connection); + } + finally { + freeConnection(connection); + } + } + + private void invalidateObject(String anId) { + // ostore send notification + if (StoreUtil.extendsStorableEntity(entityClass)) { + String uniqueId = anId; + + if (entityClass.equals(StorableObjectEntity.class)) { + uniqueId += ("@" + mainTable); + } + + logger.debug("CACHE: (del) " + anId); + + StoreIdentifier search_sid = + new StoreIdentifier(entityClass, + StoreContainerType.STOC_TYPE_ENTITY, uniqueId); + o_store.invalidate(search_sid); + } + } + + /* + * delete-Operator + * @param id des zu loeschenden Datensatzes + * @return boolean liefert true zurueck, wenn loeschen erfolgreich war. + */ + public boolean delete(String id) throws DatabaseFailure { + invalidateObject(id); + + int resultCode = 0; + Connection connection = obtainConnection(); + PreparedStatement statement = null; + + try { + statement = connection.prepareStatement("delete from " + mainTable + " where " + primaryKeyField + "=?"); + statement.setInt(1, Integer.parseInt(id)); + logQueryBefore("delete from " + mainTable + " where " + primaryKeyField + "=" + id + ""); + resultCode = statement.executeUpdate(); + } + catch (SQLException e) { + logger.warn("Can't delete record", e); + } + finally { + freeConnection(connection, statement); + } + + invalidateStore(); + + return (resultCode > 0) ? true : false; + } + + /** + * Deletes entities based on a where clause + */ + public int deleteByWhereClause(String aWhereClause) throws DatabaseFailure { + 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 (Throwable e) { + throw new DatabaseFailure(e); + } + finally { + freeConnection(con, stmt); + } + + return res; + } + + /* noch nicht implementiert. + * @return immer false + */ + public boolean delete(EntityList theEntityList) { + return false; + } + + public ResultSet executeSql(Statement stmt, String sql) + throws DatabaseFailure, 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 DatabaseFailure { + try { + Map result = new HashMap(); + ResultSetMetaData metaData = aResultSet.getMetaData(); + int nrColumns = metaData.getColumnCount(); + for (int i=0; iList of + * Maps + */ + public List executeFreeSql(String sql, int aLimit) throws DatabaseFailure, DatabaseExc { + 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 DatabaseFailure(e); + } + finally { + if (connection!=null) { + freeConnection(connection, statement); + } + } + } + + /** + * Executes 1 sql statement and returns the first result row as a Maps + * (null if there wasn't any row) + */ + public Map executeFreeSingleRowSql(String anSqlStatement) throws DatabaseFailure, DatabaseExc { + try { + List resultList = executeFreeSql(anSqlStatement, 1); + try { + if (resultList.size()>0) + return (Map) resultList.get(0); + return null; + } + finally { + } + } + catch (Throwable t) { + throw new DatabaseFailure(t); + } + } + + /** + * Executes 1 sql statement and returns the first column of the first result row as a Strings + * (null if there wasn't any row) + */ + public String executeFreeSingleValueSql(String sql) throws DatabaseFailure, DatabaseExc { + Map row = executeFreeSingleRowSql(sql); + + if (row==null) + return null; + + Iterator i = row.values().iterator(); + if (i.hasNext()) + return (String) i.next(); + return null; + } + + public int getSize(String where) throws SQLException, DatabaseFailure { + return getSize("", null, where); + } + /** + * returns the number of rows in the table + */ + public int getSize(String mainTablePrefix, List extraTables, String where) throws SQLException, DatabaseFailure { + + 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 = 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); + } + logQueryAfter(countSql.toString(), (System.currentTimeMillis() - startTime)); + + return result; + } + + public int executeUpdate(Statement stmt, String sql) + throws DatabaseFailure, 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 DatabaseFailure, SQLException { + int result = -1; + Connection con = null; + PreparedStatement pstmt = null; + + logQueryBefore(sql); + long startTime = System.currentTimeMillis(); + try { + 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 DatabaseFailure("Database.executeUpdate(" + sql + "): " + e.getMessage(), e); + } + finally { + freeConnection(con, pstmt); + } + return result; + } + + /** + * Processes the metadata for the table this Database object is responsible for. + */ + private void processMetaData(ResultSetMetaData aMetaData) throws DatabaseFailure { + fieldNames = new ArrayList(); + fieldNameToType = new HashMap(); + + try { + int numFields = aMetaData.getColumnCount(); + fieldTypes = new int[numFields]; + + for (int i = 1; i <= numFields; i++) { + fieldNames.add(aMetaData.getColumnName(i)); + fieldTypes[i - 1] = aMetaData.getColumnType(i); + fieldNameToType.put(aMetaData.getColumnName(i), new Integer(aMetaData.getColumnType(i))); + } + } + catch (Throwable e) { + throw new DatabaseFailure(e); + } + } + + /** + * Retrieves metadata from the table this Database object represents + */ + private void acquireMetaData() throws DatabaseFailure { + Connection connection = null; + PreparedStatement statement = null; + String sql = "select * from " + mainTable + " where 0=1"; + + try { + connection = obtainConnection(); + statement = connection.prepareStatement(sql); + + logger.debug("METADATA: " + sql); + ResultSet resultSet = statement.executeQuery(); + try { + processMetaData(resultSet.getMetaData()); + } + finally { + resultSet.close(); + } + } + catch (Throwable e) { + throw new DatabaseFailure(e); + } + finally { + freeConnection(connection, statement); + } + } + + public Connection obtainConnection() throws DatabaseFailure { + try { + return MirGlobal.getDatabaseEngine().obtainConnection(); + } + catch (Exception e) { + throw new DatabaseFailure(e); + } + } + + public void freeConnection(Connection aConnection) throws DatabaseFailure { + try { + MirGlobal.getDatabaseEngine().releaseConnection(aConnection); + } + catch (Throwable t) { + logger.warn("Can't release connection: " + t.toString()); + } + } + + public void freeConnection(Connection aConnection, Statement aStatement) throws DatabaseFailure { + try { + aStatement.close(); + } + catch (Throwable t) { + logger.warn("Can't close statement", t); + } + + freeConnection(aConnection); + } + + protected void _throwStorageObjectException(Exception e, String aFunction) + throws DatabaseFailure { + + if (e != null) { + logger.error(e.getMessage() + aFunction); + throw new DatabaseFailure(aFunction, e); + } + } + + + /** + * 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 byte[] getBinaryField(String aQuery) throws DatabaseFailure, SQLException { + Connection connection=null; + Statement statement=null; + InputStream inputStream; + + 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) { + return resultSet.getBytes(1); + } + else { + inputStream = resultSet.getBlob(1).getBinaryStream(); + ByteArrayOutputStream outputStream = new ByteArrayOutputStream(); + StreamCopier.copy(inputStream, outputStream); + return outputStream.toByteArray(); + } + } + resultSet.close(); + } + } + finally { + 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()); + } + + } + } + catch (Throwable t) { + logger.error("EntityImages.getImage failed: " + t.toString()); + t.printStackTrace(logger.asPrintWriter(LoggerWrapper.DEBUG_MESSAGE)); + + throw new DatabaseFailure(t); + } + + return new byte[0]; + } + + /** + * 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 DatabaseFailure, 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); + } + } + + /** + * Can be overridden to specify a primary key sequence name not named according to + * the convention (tablename _id_seq) + */ + protected String getPrimaryKeySequence() { + return mainTable+"_id_seq"; + } + + /** + * Can be called by subclasses to specify fields that are binary, and that shouldn't + * be updated outside of {@link #setBinaryField} + * + * @param aBinaryField The field name of the binary field + */ + protected void markBinaryField(String aBinaryField) { + binaryFields.add(aBinaryField); + } + + 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(); + } +}