*/
public class Database implements StorageObject {
- protected DbConnectionBroker myBroker;
- protected String theTable;
- protected String theCoreTable=null;
- protected String thePKeyName="id";
- protected int thePKeyType;
- protected boolean evaluatedMetaData=false;
- protected ArrayList metadataFields,metadataLabels,metadataNotNullFields;
- protected int[] metadataTypes;
- protected Class theEntityClass;
- protected StorageObject myselfDatabase;
- protected HashMap cache;
- protected SimpleList popupCache=null;
- protected boolean hasPopupCache = false;
- protected SimpleHash hashCache=null;
- protected boolean hasTimestamp=true;
- private String database_driver;
- private String database_url;
- private int defaultLimit;
- 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(MirConfig.getProp("Home") + MirConfig.getProp("Database.Logfile"));
- String database_username=MirConfig.getProp("Database.Username");
- String database_password=MirConfig.getProp("Database.Password");
- String database_host=MirConfig.getProp("Database.Host");
- String theAdaptorName=MirConfig.getProp("Database.Adaptor");
- try {
- theEntityClass = Class.forName("mir.entity.GenericEntity");
- theAdaptor = (DatabaseAdaptor)Class.forName(theAdaptorName).newInstance();
- defaultLimit = Integer.parseInt(MirConfig.getProp("Database.Limit"));
- database_driver=theAdaptor.getDriver();
- database_url=theAdaptor.getURL(database_username,database_password,database_host);
- theLog.printDebugInfo("adding Broker with: " +database_driver+":"+database_url );
- MirConfig.addBroker(database_driver,database_url);
- myBroker=MirConfig.getBroker();
- }
- catch (Exception e){
- theLog.printError("Bei Konstruktion von Database() with " + theAdaptorName + " -- " +e.toString());
- }
- }
-
- /**
- * 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;
- }
-
-
- /*
- * 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:
- 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)
+ 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(MirConfig.getProp("Home") + MirConfig.getProp("Database.Logfile"));
+ String database_username=MirConfig.getProp("Database.Username");
+ String database_password=MirConfig.getProp("Database.Password");
+ String database_host=MirConfig.getProp("Database.Host");
+ String theAdaptorName=MirConfig.getProp("Database.Adaptor");
+ try {
+ theEntityClass = Class.forName("mir.entity.GenericEntity");
+ theAdaptor = (DatabaseAdaptor)Class.forName(theAdaptorName).newInstance();
+ defaultLimit = Integer.parseInt(MirConfig.getProp("Database.Limit"));
+ database_driver=theAdaptor.getDriver();
+ database_url=theAdaptor.getURL(database_username,database_password,database_host);
+ theLog.printDebugInfo("adding Broker with: " +database_driver+":"+database_url );
+ MirConfig.addBroker(database_driver,database_url);
+ myBroker=MirConfig.getBroker();
+ }
+ catch (Exception e){
+ theLog.printError("Bei Konstruktion von Database() with " + theAdaptorName + " -- " +e.toString());
+ }
+ }
+
+ /**
+ * 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;
+ }
+
+
+ /*
+ * 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:
+ 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(""))
+ 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 {
+ 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);
}
- } catch (SQLException sqe){
+ } catch (SQLException sqe){
throwSQLException(sqe,"selectById"); return null;
} catch (NumberFormatException e) {
theLog.printError("ID ist keine Zahl: " + id);
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 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) {
- ;
- }
- }
-
- /**
- * Returns Connection-Object out of the PoolBroker.
+ 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.
*
- * @return Connection Object.
- */
- public Connection getPooledCon () throws StorageObjectException {
- if (myBroker != null) {
- Connection con = myBroker.getConnection();
- if (con != null)
- return con;
- }
- throw new StorageObjectException("No connection to database!");
- }
-
- /**
- * Connection und StatementObjekt werden geschlossen und an den Connectionpool
- * zurückgeben
- * @param con Connection zur Datenbank
- * @param stmt Statement-Objekt
- */
- public void freeConnection (Connection con, Statement stmt) {
- try {
- if (stmt != null)
- stmt.close();
- } catch (SQLException e1) {
- theLog.printDebugInfo(e1.toString());
- }
- if (con != null)
- myBroker.freeConnection(con);
- else
- theLog.printDebugInfo("Con was null!");
- }
-
- /**
- * 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);
- }
+ * @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 = null;
+ Connection con = null;
+ PreparedStatement pstmt = null;
+ //cache
+ invalidatePopupCache();
+ try {
+ HashMap theEntityValues = theEntity.getValues();
+ ArrayList streamedInput = theEntity.streamedInput();
+ StringBuffer f = new StringBuffer();
+ StringBuffer v = new StringBuffer();
+ String aField, aValue;
+ 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());
+ }
+ }
+ 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;
+ 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) {
+ ;
+ }
+ }
+
+ /**
+ * Returns Connection-Object out of the PoolBroker.
+ *
+ * @return Connection Object.
+ */
+ public Connection getPooledCon () throws StorageObjectException {
+ if (myBroker != null) {
+ Connection con = myBroker.getConnection();
+ if (con != null)
+ return con;
+ }
+ throw new StorageObjectException("No connection to database!");
+ }
+
+ /**
+ * Connection und StatementObjekt werden geschlossen und an den Connectionpool
+ * zurückgeben
+ * @param con Connection zur Datenbank
+ * @param stmt Statement-Objekt
+ */
+ public void freeConnection (Connection con, Statement stmt) {
+ try {
+ if (stmt != null)
+ stmt.close();
+ } catch (SQLException e1) {
+ theLog.printDebugInfo(e1.toString());
+ }
+ if (con != null)
+ myBroker.freeConnection(con);
+ else
+ theLog.printDebugInfo("Con was null!");
+ }
+
+ /**
+ * 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);
+ }
}
projects / mir.git / commitdiff