/*
- * 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.IOException;
+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.List;
+import java.util.Map;
+
+import mir.config.MirPropertiesConfiguration;
+import mir.config.MirPropertiesConfiguration.PropertiesConfigExc;
+import mir.entity.Entity;
+import mir.entity.EntityList;
+import mir.entity.StorableObjectEntity;
+import mir.log.LoggerWrapper;
+import mir.misc.HTMLTemplateProcessor;
+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 com.codestudio.util.SQLManager;
+
+import freemarker.template.SimpleHash;
+import freemarker.template.SimpleList;
/**
* Treiber, Host, User und Passwort, ueber den der Zugriff auf die
* Datenbank erfolgt.
*
- * @author RK
- * @version 16.7.1999
+ * @version $Id: Database.java,v 1.40 2003/04/28 00:44:06 zapata Exp $
+ * @author rk
+ *
*/
public class Database implements StorageObject {
+ private static Class GENERIC_ENTITY_CLASS = mir.entity.StorableObjectEntity.class;
+ private static Class STORABLE_OBJECT_ENTITY_CLASS = mir.entity.StorableObjectEntity.class;
+
+
+ private static SimpleHash POPUP_EMPTYLINE = new SimpleHash();
+ protected static final ObjectStore o_store = ObjectStore.getInstance();
+ private static final int _millisPerHour = 60 * 60 * 1000;
+ private static final int _millisPerMinute = 60 * 1000;
+
+ static {
+ // always same object saves a little space
+ POPUP_EMPTYLINE.put("key", "");
+ POPUP_EMPTYLINE.put("value", "--");
+ }
+
+ protected LoggerWrapper logger;
+ protected MirPropertiesConfiguration configuration;
+ protected String theTable;
+ protected String theCoreTable = null;
+ protected String thePKeyName = "id";
+ protected int thePKeyType;
+ protected int thePKeyIndex;
+ protected boolean evaluatedMetaData = false;
+ protected ArrayList metadataFields;
+ protected ArrayList metadataLabels;
+ protected ArrayList metadataNotNullFields;
+ protected int[] metadataTypes;
+ protected Class theEntityClass;
+ protected StorageObject myselfDatabase;
+ 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;
+ private SimpleDateFormat _dateFormatterOut =
+ new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
+ private SimpleDateFormat _dateFormatterIn =
+ new SimpleDateFormat("yyyy-MM-dd HH:mm");
+ private Calendar _cal = new GregorianCalendar();
+
+ /**
+ * Kontruktor bekommt den Filenamen des Konfigurationsfiles ?bergeben.
+ * Aus diesem file werden <code>Database.Logfile</code>,
+ * <code>Database.Username</code>,<code>Database.Password</code>,
+ * <code>Database.Host</code> und <code>Database.Adaptor</code>
+ * ausgelesen und ein Broker f?r die Verbindugen zur Datenbank
+ * erzeugt.
+ *
+ * @param String confFilename Dateiname der Konfigurationsdatei
+ */
+ public Database() throws StorageObjectFailure {
+ try {
+ configuration = MirPropertiesConfiguration.instance();
+ }
+ catch (PropertiesConfigExc e) {
+ throw new StorageObjectFailure(e);
+ }
+ logger = new LoggerWrapper("Database");
+
+ String theAdaptorName = configuration.getString("Database.Adaptor");
+ defaultLimit = Integer.parseInt(configuration.getString("Database.Limit"));
+
+ try {
+ theEntityClass = GENERIC_ENTITY_CLASS;
+ theAdaptor = (DatabaseAdaptor) Class.forName(theAdaptorName).newInstance();
+ }
+ catch (Throwable e) {
+ logger.error("Error in Database() constructor with " + theAdaptorName + " -- " + e.getMessage());
+ throw new StorageObjectFailure("Error in Database() constructor.", e);
+ }
+ }
+
+ /**
+ * Liefert die Entity-Klasse zur?ck, in der eine Datenbankzeile gewrappt
+ * wird. Wird die Entity-Klasse durch die erbende Klasse nicht ?berschrieben,
+ * wird eine mir.entity.GenericEntity erzeugt.
+ *
+ * @return Class-Objekt der Entity
+ */
+ public java.lang.Class getEntityClass() {
+ return theEntityClass;
+ }
+
+ /**
+ * Liefert die Standardbeschr?nkung von select-Statements zur?ck, also
+ * wieviel Datens?tze per Default selektiert werden.
+ *
+ * @return Standard-Anzahl der Datens?tze
+ */
+ public int getLimit() {
+ return defaultLimit;
+ }
+
+ /**
+ * Liefert den Namen des Primary-Keys zur?ck. Wird die Variable nicht von
+ * der erbenden Klasse ?berschrieben, so ist der Wert <code>PKEY</code>
+ * @return Name des Primary-Keys
+ */
+ public String getIdName() {
+ return 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 StorageObjectFailure {
+ if (metadataTypes == null) {
+ get_meta_data();
+ }
+
+ return metadataTypes;
+ }
+
+ /**
+ * Liefert eine Liste der Labels der Tabellenfelder
+ * @return ArrayListe mit Labeln
+ * @exception StorageObjectException
+ */
+ public List getLabels() throws StorageObjectFailure {
+ if (metadataLabels == null) {
+ get_meta_data();
+ }
+
+ return metadataLabels;
+ }
+
+ /**
+ * Liefert eine Liste der Felder der Tabelle
+ * @return ArrayList mit Feldern
+ * @exception StorageObjectException
+ */
+ public List getFields() throws StorageObjectFailure {
+ if (metadataFields == null) {
+ get_meta_data();
+ }
+
+ return metadataFields;
+ }
+
+ /*
+ * Gets value out of ResultSet according to type and converts to String
+ * @param 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 StorageObjectFailure {
+ String outValue = null;
+
+ if (rs != null) {
+ try {
+ switch (aType) {
+ case java.sql.Types.BIT:
+ outValue = (rs.getBoolean(valueIndex) == true) ? "1" : "0";
+
+ break;
+
+ case java.sql.Types.INTEGER:
+ case java.sql.Types.SMALLINT:
+ case java.sql.Types.TINYINT:
+ case java.sql.Types.BIGINT:
+
+ int out = rs.getInt(valueIndex);
+
+ if (!rs.wasNull()) {
+ outValue = new Integer(out).toString();
+ }
+
+ break;
+
+ case java.sql.Types.NUMERIC:
+
+ /** @todo Numeric can be float or double depending upon
+ * metadata.getScale() / especially with oracle */
+ long outl = rs.getLong(valueIndex);
+
+ if (!rs.wasNull()) {
+ outValue = new Long(outl).toString();
+ }
+
+ break;
+
+ case java.sql.Types.REAL:
+
+ float tempf = rs.getFloat(valueIndex);
+
+ if (!rs.wasNull()) {
+ tempf *= 10;
+ tempf += 0.5;
+
+ int tempf_int = (int) tempf;
+ tempf = (float) tempf_int;
+ tempf /= 10;
+ outValue = "" + tempf;
+ outValue = outValue.replace('.', ',');
+ }
+
+ break;
+
+ case java.sql.Types.DOUBLE:
+
+ double tempd = rs.getDouble(valueIndex);
+
+ if (!rs.wasNull()) {
+ tempd *= 10;
+ tempd += 0.5;
+
+ int tempd_int = (int) tempd;
+ tempd = (double) tempd_int;
+ tempd /= 10;
+ outValue = "" + tempd;
+ outValue = outValue.replace('.', ',');
+ }
+
+ break;
+
+ case java.sql.Types.CHAR:
+ case java.sql.Types.VARCHAR:
+ case java.sql.Types.LONGVARCHAR:
+ outValue = rs.getString(valueIndex);
+
+ break;
+
+ case java.sql.Types.LONGVARBINARY:
+ outValue = rs.getString(valueIndex);
+
+ break;
+
+ case java.sql.Types.TIMESTAMP:
+
+ // it's important to use Timestamp here as getting it
+ // as a string is undefined and is only there for debugging
+ // according to the API. we can make it a string through formatting.
+ // -mh
+ Timestamp timestamp = (rs.getTimestamp(valueIndex));
+
+ if (!rs.wasNull()) {
+ java.util.Date date = new java.util.Date(timestamp.getTime());
+ outValue = _dateFormatterOut.format(date);
+ _cal.setTime(date);
+
+ int offset =
+ _cal.get(Calendar.ZONE_OFFSET) + _cal.get(Calendar.DST_OFFSET);
+ String tzOffset =
+ StringUtil.zeroPaddingNumber(offset / _millisPerHour, 2, 2);
+ outValue = outValue + "+" + tzOffset;
+ }
+
+ break;
+
+ default:
+ outValue = "<unsupported value>";
+ logger.warn( "Unsupported Datatype: at " + valueIndex + " (" + aType + ")");
+ }
+ } catch (SQLException e) {
+ throw new StorageObjectFailure("Could not get Value out of Resultset -- ",
+ e);
+ }
+ }
+
+ return outValue;
+ }
+
+ /*
+ * select-Operator um einen Datensatz zu bekommen.
+ * @param id Primaerschluessel des Datensatzes.
+ * @return liefert EntityObject des gefundenen Datensatzes oder null.
+ */
+ public Entity selectById(String id) throws StorageObjectExc {
+ if ((id == null) || id.equals("")) {
+ throw new StorageObjectExc("Database.selectById: Missing id");
+ }
+
+ // ask object store for object
+ if (StoreUtil.implementsStorableObject(theEntityClass)) {
+ String uniqueId = id;
+
+ if (theEntityClass.equals(StorableObjectEntity.class)) {
+ uniqueId += ("@" + theTable);
+ }
+
+ StoreIdentifier search_sid = new StoreIdentifier(theEntityClass, uniqueId);
+ logger.debug("CACHE: (dbg) looking for sid " + search_sid.toString());
+
+ Entity hit = (Entity) o_store.use(search_sid);
+
+ if (hit != null) {
+ return hit;
+ }
+ }
+
+ Statement stmt = null;
+ Connection con = 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 {
+ logger.debug("No data for id: " + id + " in table " + theTable);
+ }
+
+ rs.close();
+ }
+ else {
+ logger.debug("No Data for Id " + id + " in Table " + theTable);
+ }
+ }
+ 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
+ */
+ 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 StorageObjectFailure {
+ return selectByWhereClause(aField + "=" + aValue, offset);
+ }
+
+ /**
+ * select-Operator liefert eine EntityListe mit den gematchten Datens?tzen zur?ck.
+ * 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 StorageObjectFailure {
+ return selectByWhereClause(where, 0);
+ }
+
+ /**
+ * select-Operator liefert eine EntityListe mit den gematchten Datens?tzen zur?ck.
+ * Als maximale Anzahl wird das Limit auf der Konfiguration genommen.
+ *
+ * @param wc where-Clause
+ * @param offset ab welchem Datensatz.
+ * @return EntityList mit den gematchten Entities
+ * @exception StorageObjectException
+ */
+ public EntityList selectByWhereClause(String whereClause, int offset)
+ throws StorageObjectFailure {
+ return selectByWhereClause(whereClause, null, offset);
+ }
+
+ /**
+ * select-Operator liefert eine EntityListe mit den gematchten Datens?tzen zur?ck.
+ * Also offset wird der erste Datensatz genommen.
+ * Als maximale Anzahl wird das Limit auf der Konfiguration genommen.
+ *
+ * @param wc where-Clause
+ * @param ob orderBy-Clause
+ * @return EntityList mit den gematchten Entities
+ * @exception StorageObjectException
+ */
+ public EntityList selectByWhereClause(String where, String order)
+ throws StorageObjectFailure {
+ return selectByWhereClause(where, order, 0);
+ }
+
+ /**
+ * 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 offset ab welchem Datensatz
+ * @return EntityList mit den gematchten Entities
+ * @exception 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 Datens?tzen zur?ck.
+ * @param wc where-Clause
+ * @param ob orderBy-Clause
+ * @param offset ab welchem Datensatz
+ * @param limit wieviele Datens?tze
+ * @return EntityList mit den gematchten Entities
+ * @exception StorageObjectException
+ */
+ public EntityList selectByWhereClause(String wc, String ob, int offset,
+ int limit) throws StorageObjectFailure {
+ // check o_store for entitylist
+ if (StoreUtil.implementsStorableObject(theEntityClass)) {
+ StoreIdentifier search_sid =
+ new StoreIdentifier(theEntityClass,
+ StoreContainerType.STOC_TYPE_ENTITYLIST,
+ StoreUtil.getEntityListUniqueIdentifierFor(theTable, wc, ob, offset,
+ limit));
+ EntityList hit = (EntityList) o_store.use(search_sid);
+
+ if (hit != null) {
+ logger.debug("CACHE (hit): " + search_sid.toString());
+
+ return hit;
+ }
+ }
+
+ // local
+ EntityList theReturnList = null;
+ Connection con = null;
+ Statement stmt = null;
+ ResultSet rs;
+ int offsetCount = 0;
+ int 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.trim().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);
+ }
- 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;
- private DatabaseAdaptor theAdaptor;
- protected Logfile theLog;
- protected Connection con;
-
- /**
- * Kontruktor bekommt den Filenamen des Konfigurationsfiles übergeben.
- * Aus diesem file werden <code>Database.Logfile</code>,
- * <code>Database.Username</code>,<code>Database.Password</code>,
- * <code>Database.Host</code> und <code>Database.Adaptor</code>
- * ausgelesen und ein Broker für die Verbindugen zur Datenbank
- * erzeugt.
- *
- * @param String confFilename Dateiname der Konfigurationsdatei
- */
- public Database() {
- theLog = Logfile.getInstance(Configuration.getProperty("Home") + Configuration.getProperty("Database.Logfile"));
- theLog.printDebugInfo("-- made database");
- String database_username=Configuration.getProperty("Database.Username");
- String database_password=Configuration.getProperty("Database.Password");
- String database_host=Configuration.getProperty("Database.Host");
- String theAdaptorName=Configuration.getProperty("Database.Adaptor");
- try {
- theEntityClass = Class.forName("mir.entity.GenericEntity");
- theAdaptor = (DatabaseAdaptor)Class.forName(theAdaptorName).newInstance();
- defaultLimit = Integer.parseInt(Configuration.getProperty("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 );
- Configuration.addBroker(database_driver,database_url);
- myBroker=Configuration.getBroker();
- }
- catch (Exception e){
- theLog.printError("Bei Konstruktion von Database() with " + theAdaptorName + " -- " +e.toString());
- }
- }
-
- /**
- * 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 <code>PKEY</code>
- * @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;
- }
-
-
- /*
- * Uebersetzt die Datenbankwerte in einen 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:
- 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 = "<unsupported value>";
- 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");
- if (cache != null && cache.containsKey(id))
- 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;
- 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);
+ if ((ob != null) && !(ob.trim().length() == 0)) {
+ selectSql.append(" order by ").append(ob);
+ }
+
+ if (theAdaptor.hasLimit()) {
+ if ((limit > -1) && (offset > -1)) {
+ selectSql.append(" LIMIT ").append(limit).append(" OFFSET ").append(offset);
+ }
+ }
+
+ // 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 {
+ logger.error("Could not count: " + countSql);
+ }
+ }
+ }
+
+ theReturnList.setCount(count);
+ theReturnList.setOffset(offset);
+ theReturnList.setWhere(wc);
+ theReturnList.setOrder(ob);
+ theReturnList.setStorage(this);
+ theReturnList.setLimit(limit);
+
+ if (offset >= limit) {
+ theReturnList.setPrevBatch(offset - limit);
+ }
+
+ if ((offset + offsetCount) < count) {
+ theReturnList.setNextBatch(offset + limit);
+ }
+
+ if (StoreUtil.implementsStorableObject(theEntityClass)) {
+ StoreIdentifier sid = theReturnList.getStoreIdentifier();
+ logger.debug("CACHE (add): " + sid.toString());
+ o_store.add(sid);
+ }
}
- } catch (SQLException sqe){
- throwSQLException(sqe,"selectById"); return null;
- } catch (NumberFormatException e) {
- theLog.printError("ID ist keine Zahl: " + id);
+ } catch (SQLException sqe) {
+ throwSQLException(sqe, "selectByWhereClause");
} finally {
- freeConnection(con,stmt);
+ try {
+ if (con != null) {
+ freeConnection(con, stmt);
+ }
+ } catch (Throwable t) {
+ }
}
- 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;
- int count=0;
-
-
- // 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);
- }
- }
- }
-
- // 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) {
- theReturnList = new EntityList();
- if (evaluatedMetaData == false) {
- evalMetaData(rs.getMetaData());
- }
- Entity theResultEntity;
- while (rs.next()) {
- theResultEntity = makeEntityFromResultSet(rs);
- theReturnList.add(theResultEntity);
- offsetCount++;
- }
- rs.close();
- }
- // making entitylist
- if (!(theAdaptor.hasLimit()))
- count = offsetCount;
- if (theReturnList != null) {
- 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.
- */
-
- public Entity makeEntityFromResultSet (ResultSet rs) throws StorageObjectException {
- 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);
- }
- }
- 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!");
- }
- }
- } // 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) {
- 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 = "0";
- 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;
- 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 (theEntityValues.containsKey(aField)) {
- aValue = "'" + StringUtil.quote((String)theEntityValues.get(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)theEntityValues.get(streamedInput.get(i));
- pstmt.setBytes(i + 1, inputString.getBytes());
- }
- }
- pstmt.execute();
- 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;
- PreparedStatement pstmt = null;
- ArrayList streamedInput = theEntity.streamedInput();
- HashMap theEntityValues = theEntity.getValues();
- 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 (theEntityValues.containsKey(aField)) {
- if (firstField == false) {
- fv.append(", ");
- }
- else {
- firstField = false;
- }
- fv.append(aField).append("='").append(StringUtil.quote((String)theEntityValues.get(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 = (String)theEntityValues.get(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();
- 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);
- }
- 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 () {
- 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) {
- 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) {
- 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) {
- // 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();
- 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);
- }
- rs.close();
- }
- } catch (Exception e) {
- theLog.printDebugInfo(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 () {
- if (hashCache == null) {
- try {
- hashCache = HTMLTemplateProcessor.makeSimpleHash(selectByWhereClause("",
- -1));
- } catch (StorageObjectException e) {
- theLog.printDebugInfo(e.toString());
- }
- }
- return hashCache;
- }
-
- /* invalidates the popupCache
- */
- private void invalidatePopupCache () {
-
- /** @todo invalidates toooo much */
- popupCache = null;
- hashCache = null;
- }
-
- /**
- * Diese Methode fuehrt den Sqlstring <i>sql</i> 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;
- }
-
- /**
- * 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 = (new java.util.Date()).getTime();
- String sql = "SELECT count(*) FROM "+ theTable + " where " + where;
- //theLog.printDebugInfo("trying: "+ sql);
- 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((new java.util.Date().getTime() - startTime) + "ms. for: " + sql);
- 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);
- 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());}
- 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);
- }
- }
-
- /**
- * Datenbankverbindung wird geschlossen
- */
- public void disconnectPool () {
- try {
- myBroker.destroy(100);
- } catch (SQLException sqe) {
- ;
- }
- }
-
- /**
- * Liefert ein Connection-Objekt aus dem ConnectionPool.
- * @return Connection Objekt.
- */
- public Connection getPooledCon () throws StorageObjectException {
- if (myBroker != null) {
- Connection con = myBroker.getConnection();
- if (con != null)
- return con;
- }
- throw new StorageObjectException("KEINE VERBINDUNG ZUR DATENBANK");
- }
-
- /**
- * 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!");
- }
-
- /**
- * Wertet SQLException aus und wirft dannach eine StorageObjectException
- * @param sqe SQLException
- * @param wo Funktonsname, in der die SQLException geworfen wurde
- * @exception StorageObjectException
- */
- 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());
- }
-
- /**
- * 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 {
- theLog.printError(message);
- throw new StorageObjectException(message);
- }
-}
+ return theReturnList;
+ }
+
+ /**
+ * Bastelt aus einer Zeile der Datenbank ein EntityObjekt.
+ *
+ * @param rs Das ResultSetObjekt.
+ * @return Entity Die Entity.
+ */
+ private Entity makeEntityFromResultSet(ResultSet rs)
+ throws StorageObjectFailure {
+ /** @todo OS: get Pkey from ResultSet and consult ObjectStore */
+ Map 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) {
+ InputStreamReader is =
+ (InputStreamReader) rs.getCharacterStream(i + 1);
+
+ if (is != null) {
+ char[] data = new char[32768];
+ StringBuffer theResultString = new StringBuffer();
+ int len;
+
+ while ((len = is.read(data)) > 0) {
+ theResultString.append(data, 0, len);
+ }
+
+ is.close();
+ theResult = theResultString.toString();
+ } else {
+ theResult = null;
+ }
+ } else {
+ theResult = getValueAsString(rs, (i + 1), theType);
+ }
+
+ if (theResult != null) {
+ theResultHash.put(metadataFields.get(i), theResult);
+ }
+ }
+
+ if (theEntityClass != null) {
+ returnEntity = (Entity) theEntityClass.newInstance();
+ returnEntity.setValues(theResultHash);
+ returnEntity.setStorage(myselfDatabase);
+
+ if (returnEntity instanceof StorableObject) {
+ logger.debug("CACHE: ( in) " + returnEntity.getId() + " :" + theTable);
+ o_store.add(((StorableObject) returnEntity).getStoreIdentifier());
+ }
+ } else {
+ throwStorageObjectException("Internal Error: theEntityClass not set!");
+ }
+ } catch (IllegalAccessException e) {
+ throwStorageObjectException("No access! -- " + e.getMessage());
+ } catch (IOException e) {
+ throwStorageObjectException("IOException! -- " + e.getMessage());
+ } catch (InstantiationException e) {
+ throwStorageObjectException("No Instatiation! -- " + e.getMessage());
+ } catch (SQLException sqe) {
+ throwSQLException(sqe, "makeEntityFromResultSet");
+
+ return null;
+ }
+
+ return returnEntity;
+ }
+
+ /**
+ * insert-Operator: f?gt 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 eingef?gten Entity
+ */
+ public String insert(Entity theEntity) throws StorageObjectFailure {
+ //cache
+ invalidatePopupCache();
+
+ // invalidating all EntityLists corresponding with theEntityClass
+ if (StoreUtil.implementsStorableObject(theEntityClass)) {
+ StoreContainerType stoc_type =
+ StoreContainerType.valueOf(theEntityClass,
+ StoreContainerType.STOC_TYPE_ENTITYLIST);
+ o_store.invalidate(stoc_type);
+ }
+
+ String returnId = null;
+ Connection con = null;
+ PreparedStatement pstmt = null;
+
+ try {
+ List streamedInput = theEntity.streamedInput();
+ StringBuffer f = new StringBuffer();
+ StringBuffer v = new StringBuffer();
+ String aField;
+ String aValue;
+ boolean firstField = true;
+
+ // make sql-string
+ for (int i = 0; i < getFields().size(); i++) {
+ aField = (String) getFields().get(i);
+
+ if (!aField.equals(thePKeyName)) {
+ aValue = null;
+
+ // exceptions
+ if (aField.equals("webdb_create") ||
+ aField.equals("webdb_lastchange")) {
+ aValue = "NOW()";
+ } else {
+ if ((streamedInput != null) && streamedInput.contains(aField)) {
+ aValue = "?";
+ } else {
+ if (theEntity.hasValueForField(aField)) {
+ aValue =
+ "'" +
+ JDBCStringRoutines.escapeStringLiteral((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();
+
+ logger.debug("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);
+ }
+
+ /** @todo store entity in o_store */
+ 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 StorageObjectFailure {
+ Connection con = null;
+ PreparedStatement pstmt = null;
+
+ /** @todo this is stupid: why do we prepare statement, when we
+ * throw it away afterwards. should be regular statement
+ * update/insert could better be one routine called save()
+ * that chooses to either insert or update depending if we
+ * have a primary key in the entity. i don't know if we
+ * still need the streamed input fields. // rk */
+ /** @todo extension: check if Entity did change, otherwise we don't need
+ * the roundtrip to the database */
+ /** invalidating corresponding entitylists in o_store*/
+ if (StoreUtil.implementsStorableObject(theEntityClass)) {
+ StoreContainerType stoc_type =
+ StoreContainerType.valueOf(theEntityClass,
+ StoreContainerType.STOC_TYPE_ENTITYLIST);
+ o_store.invalidate(stoc_type);
+ }
+
+ List 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(JDBCStringRoutines.escapeStringLiteral((String) theEntity.getValue(aField))).append("'");
+
+ // 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()");
+ }
+
+ // special case: the webdb_create requires the field in yyyy-mm-dd HH:mm
+ // format so anything extra will be ignored. -mh
+ if (metadataFields.contains("webdb_create") &&
+ theEntity.hasValueForField("webdb_create")) {
+ // minimum of 10 (yyyy-mm-dd)...
+ if (theEntity.getValue("webdb_create").length() >= 10) {
+ String dateString = theEntity.getValue("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 = _dateFormatterIn.parse(dateString);
+ Timestamp tStamp = new Timestamp(d.getTime());
+ sql.append(",webdb_create='" + tStamp.toString() + "'");
+ } catch (ParseException e) {
+ throw new StorageObjectFailure(e);
+ }
+ }
+ }
+
+ 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 StorageObjectFailure {
+ invalidatePopupCache();
+
+ // ostore send notification
+ if (StoreUtil.implementsStorableObject(theEntityClass)) {
+ String uniqueId = id;
+
+ if (theEntityClass.equals(StorableObjectEntity.class)) {
+ uniqueId += ("@" + theTable);
+ }
+
+ logger.debug("CACHE: (del) " + id);
+
+ StoreIdentifier search_sid =
+ new StoreIdentifier(theEntityClass,
+ StoreContainerType.STOC_TYPE_ENTITY, uniqueId);
+ o_store.invalidate(search_sid);
+ }
+
+ /** @todo could be prepared Statement */
+ Statement stmt = null;
+ Connection con = null;
+ int res = 0;
+ String sql =
+ "delete from " + 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);
+ }
+
+ 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 StorageObjectFailure {
+ 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 StorageObjectFailure {
+ 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 StorageObjectFailure {
+ 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 StorageObjectFailure {
+ // 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 StorageObjectFailure(e);
+ }
+
+ 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_EMPTYLINE);
+ }
+
+ 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) {
+ logger.error("getPopupData: " + e.getMessage());
+ throw new StorageObjectFailure(e);
+ } 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 (StorageObjectFailure e) {
+ logger.debug(e.getMessage());
+ }
+ }
+
+ return hashCache;
+ }
+
+ /* invalidates the popupCache
+ */
+ protected void invalidatePopupCache() {
+ /** @todo invalidates toooo much */
+ popupCache = null;
+ hashCache = null;
+ }
+
+ /**
+ * Diese Methode fuehrt den Sqlstring <i>sql</i> aus und timed im Logfile.
+ * @param stmt Statemnt
+ * @param sql Sql-String
+ * @return ResultSet
+ * @exception StorageObjectException
+ */
+ public ResultSet executeSql(Statement stmt, String sql)
+ throws StorageObjectFailure, SQLException {
+ ResultSet rs;
+ long startTime = System.currentTimeMillis();
+
+ try {
+ rs = stmt.executeQuery(sql);
+
+ logger.debug((System.currentTimeMillis() - startTime) + "ms. for: " + sql);
+ }
+ catch (SQLException e) {
+ logger.error(e.getMessage() +"\n" + (System.currentTimeMillis() - startTime) + "ms. for: " + sql);
+ throw e;
+ }
+
+ return rs;
+ }
+
+ /**
+ * returns the number of rows in the table
+ */
+ public int getSize(String where) throws SQLException, StorageObjectFailure {
+ long startTime = System.currentTimeMillis();
+ String sql = "SELECT Count(*) FROM " + theTable;
+
+ if ((where != null) && !(where.length() == 0)) {
+ sql = sql + " 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) {
+ logger.error("Database.getSize: " + e.getMessage());
+ }
+ finally {
+ freeConnection(con, stmt);
+ }
+
+ //theLog.printInfo(theTable + " has "+ result +" rows where " + where);
+ logger.debug((System.currentTimeMillis() - startTime) + "ms. for: " + sql);
+
+ return result;
+ }
+
+ public int executeUpdate(Statement stmt, String sql)
+ throws StorageObjectFailure, SQLException {
+ int rs;
+ long startTime = System.currentTimeMillis();
+ try {
+ rs = stmt.executeUpdate(sql);
+ logger.debug((System.currentTimeMillis() - startTime) + "ms. for: " + sql);
+ }
+ catch (SQLException e) {
+ logger.error("Failed: " + (System.currentTimeMillis() - startTime) + "ms. for: " + sql);
+ throw e;
+ }
+
+ return rs;
+ }
+
+ public int executeUpdate(String sql)
+ throws StorageObjectFailure, SQLException {
+ int result = -1;
+ long startTime = System.currentTimeMillis();
+ Connection con = null;
+ PreparedStatement pstmt = null;
+
+ try {
+ con = getPooledCon();
+ pstmt = con.prepareStatement(sql);
+ result = pstmt.executeUpdate();
+ }
+ catch (Throwable e) {
+ logger.error("Database.executeUpdate(" + sql + "): " + e.getMessage());
+ throw new StorageObjectFailure("Database.executeUpdate(" + sql + "): " + e.getMessage(), e);
+ }
+ finally {
+ freeConnection(con, pstmt);
+ }
+
+ logger.debug((System.currentTimeMillis() - 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 StorageObjectFailure {
+ this.evaluatedMetaData = true;
+ this.metadataFields = new ArrayList();
+ this.metadataLabels = new ArrayList();
+ this.metadataNotNullFields = new ArrayList();
+
+ try {
+ int numFields = md.getColumnCount();
+ this.metadataTypes = new int[numFields];
+
+ String aField;
+ int aType;
+
+ for (int i = 1; i <= numFields; i++) {
+ aField = md.getColumnName(i);
+ metadataFields.add(aField);
+ metadataLabels.add(md.getColumnLabel(i));
+ aType = md.getColumnType(i);
+ metadataTypes[i - 1] = aType;
+
+ if (aField.equals(thePKeyName)) {
+ thePKeyType = aType;
+ thePKeyIndex = i;
+ }
+
+ if (md.isNullable(i) == ResultSetMetaData.columnNullable) {
+ metadataNotNullFields.add(aField);
+ }
+ }
+ }
+ catch (SQLException e) {
+ throwSQLException(e, "evalMetaData");
+ }
+ }
+
+ /**
+ * Wertet die Metadaten eines Resultsets fuer eine Tabelle aus,
+ * um die alle Columns und Typen einer Tabelle zu ermitteln.
+ */
+ private void get_meta_data() throws StorageObjectFailure {
+ Connection con = null;
+ PreparedStatement pstmt = null;
+ String sql = "select * from " + theTable + " where 0=1";
+
+ try {
+ con = getPooledCon();
+ pstmt = con.prepareStatement(sql);
+
+ logger.debug("METADATA: " + sql);
+ ResultSet rs = pstmt.executeQuery();
+ evalMetaData(rs.getMetaData());
+ rs.close();
+ }
+ catch (SQLException e) {
+ throwSQLException(e, "get_meta_data");
+ }
+ finally {
+ freeConnection(con, pstmt);
+ }
+ }
+
+ public Connection getPooledCon() throws StorageObjectFailure {
+ Connection con = null;
+
+ try {
+ con = SQLManager.getInstance().requestConnection();
+ }
+ catch (SQLException e) {
+ logger.error("could not connect to the database " + e.getMessage());
+
+ throw new StorageObjectFailure("Could not connect to the database", e);
+ }
+
+ return con;
+ }
+
+ public void freeConnection(Connection con, Statement stmt)
+ throws StorageObjectFailure {
+ SQLManager.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 aFunction)
+ throws StorageObjectFailure {
+ String state = "";
+ String message = "";
+ int vendor = 0;
+
+ if (sqe != null) {
+ state = sqe.getSQLState();
+ message = sqe.getMessage();
+ vendor = sqe.getErrorCode();
+ }
+
+ String information =
+ "SQL Error: " +
+ "state= " + state +
+ ", vendor= " + vendor +
+ ", message=" + message +
+ ", function= " + aFunction;
+
+ logger.error(information);
+
+ throw new StorageObjectFailure(information, sqe);
+ }
+ protected void _throwStorageObjectException(Exception e, String aFunction)
+ throws StorageObjectFailure {
+
+ if (e != null) {
+ logger.error(e.getMessage() + aFunction);
+ throw new StorageObjectFailure(aFunction, e);
+ }
+ }
+
+ /**
+ * Loggt Fehlermeldung mit dem Parameter Message und wirft dannach
+ * eine StorageObjectException
+ * @param message Nachricht mit dem Fehler
+ * @exception StorageObjectException
+ */
+ void throwStorageObjectException(String aMessage) throws StorageObjectFailure {
+ logger.error(aMessage);
+ throw new StorageObjectFailure(aMessage, null);
+ }
+}
projects / mir.git / blobdiff