source/mir/storage/Database.java

   1 /*
   2  * put your module comment here
   3  */
   4 package mir.storage;
   5
   6 import  java.sql.*;
   7 import  java.lang.*;
   8 import  java.io.*;
   9 import  java.util.*;
  10 import  java.text.SimpleDateFormat;
  11 import  java.text.ParseException;
  12 import  freemarker.template.*;
  13 import  com.codestudio.sql.*;
  14 import  com.codestudio.util.*;
  15
  16 import  mir.storage.StorageObject;
  17 import  mir.storage.store.*;
  18 import  mir.entity.*;
  19 import  mir.misc.*;
  20
  21
  22 /**
  23  * Diese Klasse implementiert die Zugriffsschicht auf die Datenbank.
  24  * Alle Projektspezifischen Datenbankklassen erben von dieser Klasse.
  25  * In den Unterklassen wird im Minimalfall nur die Tabelle angegeben.
  26  * Im Konfigurationsfile findet sich eine Verweis auf den verwendeten
  27  * Treiber, Host, User und Passwort, ueber den der Zugriff auf die
  28  * Datenbank erfolgt.
  29  *
  30  * @version $Revision: 1.22 $ $Date: 2002/08/25 19:00:09 $
  31  * @author $Author: mh $
  32  *
  33  * $Log: Database.java,v $
  34  * Revision 1.22  2002/08/25 19:00:09  mh
  35  * merge of localization branch into HEAD. mh and zap
  36  *
  37  * Revision 1.21  2002/08/04 23:38:22  mh
  38  * fix up the webdb_create update stuff
  39  *
  40  * Revision 1.20  2002/07/21 22:32:25  mh
  41  * on insert, the "webdb_lastchange" field should get a value
  42  *
  43  * Revision 1.19  2002/06/29 15:44:46  mh
  44  * make the webdb_create update be called webdb_create_update. it breaks things otherwise. a fixme case I know..
  45  *
  46  * Revision 1.18  2002/06/28 20:42:13  mh
  47  * added necessary bits in templates and Database.java to make webdb_create modifiable. make the conversion from sql/Timestamp to String more robust
  48  *
  49  *
  50  */
  51 public class Database implements StorageObject {
  52
  53         protected String                    theTable;
  54         protected String                    theCoreTable=null;
  55         protected String                    thePKeyName="id";
  56         protected int                       thePKeyType, thePKeyIndex;
  57         protected boolean                   evaluatedMetaData=false;
  58         protected ArrayList                 metadataFields,metadataLabels,
  59                                                                                                                                                         metadataNotNullFields;
  60         protected int[]                     metadataTypes;
  61         protected Class                     theEntityClass;
  62         protected StorageObject             myselfDatabase;
  63         protected SimpleList                popupCache=null;
  64         protected boolean                   hasPopupCache = false;
  65         protected SimpleHash                hashCache=null;
  66         protected boolean                   hasTimestamp=true;
  67         private String                      database_driver, database_url;
  68         private int                         defaultLimit;
  69         protected DatabaseAdaptor           theAdaptor;
  70         protected Logfile                   theLog;
  71         private static Class                GENERIC_ENTITY_CLASS=null,
  72                                       STORABLE_OBJECT_ENTITY_CLASS=null;
  73   private static SimpleHash           POPUP_EMTYLINE=new SimpleHash();
  74   protected static final ObjectStore  o_store=ObjectStore.getInstance();
  75   private SimpleDateFormat _dateFormatterOut =
  76                                     new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
  77   private SimpleDateFormat _dateFormatterIn =
  78                                     new SimpleDateFormat("yyyy-MM-dd HH:mm");
  79   private Calendar _cal = new GregorianCalendar();
  80
  81   private static final int _millisPerHour = 60 * 60 * 1000;
  82   private static final int _millisPerMinute = 60 * 1000;
  83
  84         static {
  85                 // always same object saves a little space
  86                 POPUP_EMTYLINE.put("key", ""); POPUP_EMTYLINE.put("value", "--");
  87     try {
  88       GENERIC_ENTITY_CLASS = Class.forName("mir.entity.StorableObjectEntity");
  89       STORABLE_OBJECT_ENTITY_CLASS = Class.forName("mir.entity.StorableObjectEntity");
  90     }
  91     catch (Exception e) {
  92       System.err.println("FATAL: Database.java could not initialize" + e.toString());
  93     }
  94   }
  95
  96
  97         /**
  98          * Kontruktor bekommt den Filenamen des Konfigurationsfiles übergeben.
  99          * Aus diesem file werden <code>Database.Logfile</code>,
 100          * <code>Database.Username</code>,<code>Database.Password</code>,
 101          * <code>Database.Host</code> und <code>Database.Adaptor</code>
 102          * ausgelesen und ein Broker für die Verbindugen zur Datenbank
 103          * erzeugt.
 104          *
 105          * @param   String confFilename Dateiname der Konfigurationsdatei
 106          */
 107         public Database() throws StorageObjectException {
 108                 theLog = Logfile.getInstance(MirConfig.getProp("Home")+
 109                                                                                                                                 MirConfig.getProp("Database.Logfile"));
 110                 String theAdaptorName=MirConfig.getProp("Database.Adaptor");
 111                 defaultLimit = Integer.parseInt(MirConfig.getProp("Database.Limit"));
 112                 try {
 113                         theEntityClass = GENERIC_ENTITY_CLASS;
 114                         theAdaptor = (DatabaseAdaptor)Class.forName(theAdaptorName).newInstance();
 115                 } catch (Exception e){
 116                         theLog.printError("Error in Database() constructor with "+
 117                                                                                                 theAdaptorName + " -- " +e.toString());
 118                         throw new StorageObjectException("Error in Database() constructor with "
 119                                                                                                                                                          +e.toString());
 120                 }
 121                 /*String database_username=MirConfig.getProp("Database.Username");
 122                 String database_password=MirConfig.getProp("Database.Password");
 123                 String database_host=MirConfig.getProp("Database.Host");
 124                 try {
 125                         database_driver=theAdaptor.getDriver();
 126                         database_url=theAdaptor.getURL(database_username,database_password,
 127                                                                                                                                                 database_host);
 128                         theLog.printDebugInfo("adding Broker with: " +database_driver+":"+
 129                                                                                                                 database_url  );
 130                         MirConfig.addBroker(database_driver,database_url);
 131                         //myBroker=MirConfig.getBroker();
 132                 }*/
 133         }
 134
 135         /**
 136          * Liefert die Entity-Klasse zurück, in der eine Datenbankzeile gewrappt
 137          * wird. Wird die Entity-Klasse durch die erbende Klasse nicht überschrieben,
 138          * wird eine mir.entity.GenericEntity erzeugt.
 139          *
 140          * @return Class-Objekt der Entity
 141          */
 142         public java.lang.Class getEntityClass () {
 143                 return  theEntityClass;
 144         }
 145
 146         /**
 147          * Liefert die Standardbeschränkung von select-Statements zurück, also
 148          * wieviel Datensätze per Default selektiert werden.
 149          *
 150          * @return Standard-Anzahl der Datensätze
 151          */
 152         public int getLimit () {
 153                 return  defaultLimit;
 154         }
 155
 156         /**
 157          * Liefert den Namen des Primary-Keys zurück. Wird die Variable nicht von
 158          * der erbenden Klasse überschrieben, so ist der Wert <code>PKEY</code>
 159          * @return Name des Primary-Keys
 160          */
 161         public String getIdName () {
 162                 return  thePKeyName;
 163         }
 164
 165         /**
 166          * Liefert den Namen der Tabelle, auf das sich das Datenbankobjekt bezieht.
 167          *
 168          * @return Name der Tabelle
 169          */
 170         public String getTableName () {
 171                 return  theTable;
 172         }
 173
 174         /*
 175          *   Dient dazu vererbte Tabellen bei objectrelationalen DBMS
 176          *   zu speichern, wenn die id einer Tabelle in der parenttabelle verwaltet
 177          *   wird.
 178          *   @return liefert theCoreTabel als String zurueck, wenn gesetzt, sonst
 179          *    the Table
 180          */
 181
 182         public String getCoreTable(){
 183                 if (theCoreTable!=null) return theCoreTable;
 184                 else return theTable;
 185         }
 186
 187         /**
 188          * Liefert Feldtypen der Felder der Tabelle zurueck (s.a. java.sql.Types)
 189          * @return int-Array mit den Typen der Felder
 190          * @exception StorageObjectException
 191          */
 192         public int[] getTypes () throws StorageObjectException {
 193                 if (metadataTypes == null)
 194                         get_meta_data();
 195                 return  metadataTypes;
 196         }
 197
 198         /**
 199          * Liefert eine Liste der Labels der Tabellenfelder
 200          * @return ArrayListe mit Labeln
 201          * @exception StorageObjectException
 202          */
 203         public ArrayList getLabels () throws StorageObjectException {
 204                 if (metadataLabels == null)
 205                         get_meta_data();
 206                 return  metadataLabels;
 207         }
 208
 209         /**
 210          * Liefert eine Liste der Felder der Tabelle
 211          * @return ArrayList mit Feldern
 212          * @exception StorageObjectException
 213          */
 214         public ArrayList getFields () throws StorageObjectException {
 215                 if (metadataFields == null)
 216                         get_meta_data();
 217                 return  metadataFields;
 218         }
 219
 220
 221         /*
 222          *   Gets value out of ResultSet according to type and converts to String
 223          *   @param inValue  Wert aus ResultSet.
 224          *   @param aType  Datenbanktyp.
 225          *   @return liefert den Wert als String zurueck. Wenn keine Umwandlung moeglich
 226          *           dann /unsupported value/
 227          */
 228         private String getValueAsString (ResultSet rs, int valueIndex, int aType) throws StorageObjectException {
 229                 String outValue = null;
 230                 if (rs != null) {
 231                         try {
 232                                 switch (aType) {
 233                                         case java.sql.Types.BIT:
 234                                                 outValue = (rs.getBoolean(valueIndex) == true) ? "1" : "0";
 235                                                 break;
 236                                         case java.sql.Types.INTEGER:case java.sql.Types.SMALLINT:case java.sql.Types.TINYINT:case java.sql.Types.BIGINT:
 237                                                 int out = rs.getInt(valueIndex);
 238                                                 if (!rs.wasNull())
 239                                                         outValue = new Integer(out).toString();
 240                                                 break;
 241                                         case java.sql.Types.NUMERIC:
 242             /** @todo Numeric can be float or double depending upon
 243              *  metadata.getScale() / especially with oracle */
 244                                                 long outl = rs.getLong(valueIndex);
 245                                                 if (!rs.wasNull())
 246                                                         outValue = new Long(outl).toString();
 247                                                 break;
 248                                         case java.sql.Types.REAL:
 249                                                 float tempf = rs.getFloat(valueIndex);
 250                                                 if (!rs.wasNull()) {
 251                                                         tempf *= 10;
 252                                                         tempf += 0.5;
 253                                                         int tempf_int = (int)tempf;
 254                                                         tempf = (float)tempf_int;
 255                                                         tempf /= 10;
 256                                                         outValue = "" + tempf;
 257                                                         outValue = outValue.replace('.', ',');
 258                                                 }
 259                                                 break;
 260                                         case java.sql.Types.DOUBLE:
 261                                                 double tempd = rs.getDouble(valueIndex);
 262                                                 if (!rs.wasNull()) {
 263                                                         tempd *= 10;
 264                                                         tempd += 0.5;
 265                                                         int tempd_int = (int)tempd;
 266                                                         tempd = (double)tempd_int;
 267                                                         tempd /= 10;
 268                                                         outValue = "" + tempd;
 269                                                         outValue = outValue.replace('.', ',');
 270                                                 }
 271                                                 break;
 272                                         case java.sql.Types.CHAR:case java.sql.Types.VARCHAR:case java.sql.Types.LONGVARCHAR:
 273                                                 outValue = rs.getString(valueIndex);
 274                                                 //if (outValue != null)
 275                                                         //outValue = StringUtil.encodeHtml(StringUtil.unquote(outValue));
 276                                                 break;
 277                                         case java.sql.Types.LONGVARBINARY:
 278                                                 outValue = rs.getString(valueIndex);
 279                                                 //if (outValue != null)
 280                                                 //outValue = StringUtil.encodeHtml(StringUtil.unquote(outValue));
 281                                                 break;
 282                                         case java.sql.Types.TIMESTAMP:
 283             // it's important to use Timestamp here as getting it
 284             // as a string is undefined and is only there for debugging
 285             // according to the API. we can make it a string through formatting.
 286             // -mh
 287                                           Timestamp timestamp = (rs.getTimestamp(valueIndex));
 288             if(!rs.wasNull()) {
 289               java.util.Date date = new java.util.Date(timestamp.getTime());
 290               outValue = _dateFormatterOut.format(date);
 291               _cal.setTime(date);
 292               int offset = _cal.get(Calendar.ZONE_OFFSET)+
 293                             _cal.get(Calendar.DST_OFFSET);
 294               String tzOffset = StringUtil.zeroPaddingNumber(
 295                                                      offset/_millisPerHour,2,2);
 296               outValue = outValue+"+"+tzOffset;
 297             }
 298                                                 break;
 299                                         default:
 300                                                 outValue = "<unsupported value>";
 301                                                 theLog.printWarning("Unsupported Datatype: at " + valueIndex +
 302                                                                 " (" + aType + ")");
 303                                 }
 304                         } catch (SQLException e) {
 305                                 throw  new StorageObjectException("Could not get Value out of Resultset -- "
 306                                                 + e.toString());
 307                         }
 308                 }
 309                 return  outValue;
 310         }
 311
 312         /*
 313          *   select-Operator um einen Datensatz zu bekommen.
 314          *   @param id Primaerschluessel des Datensatzes.
 315          *   @return liefert EntityObject des gefundenen Datensatzes oder null.
 316          */
 317         public Entity selectById(String id)     throws StorageObjectException
 318   {
 319                 if (id==null||id.equals(""))
 320                         throw new StorageObjectException("id war null");
 321
 322     // ask object store for object
 323     if ( StoreUtil.implementsStorableObject(theEntityClass) ) {
 324       String uniqueId = id;
 325       if ( theEntityClass.equals(StorableObjectEntity.class) )
 326         uniqueId+="@"+theTable;
 327       StoreIdentifier search_sid = new StoreIdentifier(theEntityClass, uniqueId);
 328       theLog.printDebugInfo("CACHE: (dbg) looking for sid " + search_sid.toString());
 329       Entity hit = (Entity)o_store.use(search_sid);
 330       if ( hit!=null ) return hit;
 331     }
 332
 333                 Statement stmt=null;Connection con=getPooledCon();
 334                 Entity returnEntity=null;
 335                 try {
 336                         ResultSet rs;
 337                         /** @todo better prepared statement */
 338                         String selectSql = "select * from " + theTable + " where " + thePKeyName + "=" + id;
 339                         stmt = con.createStatement();
 340                         rs = executeSql(stmt, selectSql);
 341                         if (rs != null) {
 342                                 if (evaluatedMetaData==false) evalMetaData(rs.getMetaData());
 343                                 if (rs.next())
 344                                         returnEntity = makeEntityFromResultSet(rs);
 345                                 else theLog.printDebugInfo("Keine daten fuer id: " + id + "in Tabelle" + theTable);
 346                                 rs.close();
 347                         }
 348                         else {
 349                                 theLog.printDebugInfo("No Data for Id " + id + " in Table " + theTable);
 350                         }
 351                 }
 352                 catch (SQLException sqe){
 353                         throwSQLException(sqe,"selectById"); return null;
 354                 }
 355                 catch (NumberFormatException e) {
 356                         theLog.printError("ID ist keine Zahl: " + id);
 357                 }
 358                 finally { freeConnection(con,stmt); }
 359
 360                 /** @todo OS: Entity should be saved in ostore */
 361                 return returnEntity;
 362         }
 363
 364
 365         /**
 366          *   select-Operator um Datensaetze zu bekommen, die key = value erfuellen.
 367          *   @param key  Datenbankfeld der Bedingung.
 368          *   @param value  Wert die der key anehmen muss.
 369          *   @return EntityList mit den gematchten Entities
 370          */
 371         public EntityList selectByFieldValue(String aField, String aValue)
 372                 throws StorageObjectException
 373         {
 374                 return selectByFieldValue(aField, aValue, 0);
 375         }
 376
 377         /**
 378          *   select-Operator um Datensaetze zu bekommen, die key = value erfuellen.
 379          *   @param key  Datenbankfeld der Bedingung.
 380          *   @param value  Wert die der key anehmen muss.
 381          *   @param offset  Gibt an ab welchem Datensatz angezeigt werden soll.
 382          *   @return EntityList mit den gematchten Entities
 383          */
 384         public EntityList selectByFieldValue(String aField, String aValue, int offset)
 385                 throws StorageObjectException
 386         {
 387                 return selectByWhereClause(aField + "=" + aValue, offset);
 388         }
 389
 390
 391         /**
 392          * select-Operator liefert eine EntityListe mit den gematchten Datensätzen zurück.
 393          * Also offset wird der erste Datensatz genommen.
 394          *
 395          * @param wc where-Clause
 396          * @return EntityList mit den gematchten Entities
 397          * @exception StorageObjectException
 398          */
 399         public EntityList selectByWhereClause(String where)
 400                 throws StorageObjectException
 401         {
 402                 return selectByWhereClause(where, 0);
 403         }
 404
 405
 406         /**
 407          * select-Operator liefert eine EntityListe mit den gematchten Datensätzen zurück.
 408          * Als maximale Anzahl wird das Limit auf der Konfiguration genommen.
 409          *
 410          * @param wc where-Clause
 411          * @param offset ab welchem Datensatz.
 412          * @return EntityList mit den gematchten Entities
 413          * @exception StorageObjectException
 414          */
 415         public EntityList selectByWhereClause(String whereClause, int offset)
 416                 throws StorageObjectException
 417         {
 418                 return selectByWhereClause(whereClause, null, offset);
 419         }
 420
 421
 422         /**
 423          * select-Operator liefert eine EntityListe mit den gematchten Datensätzen zurück.
 424          * Also offset wird der erste Datensatz genommen.
 425          * Als maximale Anzahl wird das Limit auf der Konfiguration genommen.
 426          *
 427          * @param wc where-Clause
 428          * @param ob orderBy-Clause
 429          * @return EntityList mit den gematchten Entities
 430          * @exception StorageObjectException
 431          */
 432
 433         public EntityList selectByWhereClause(String where, String order)
 434                 throws StorageObjectException {
 435                 return selectByWhereClause(where, order, 0);
 436         }
 437
 438
 439         /**
 440          * select-Operator liefert eine EntityListe mit den gematchten Datensätzen zurück.
 441          * Als maximale Anzahl wird das Limit auf der Konfiguration genommen.
 442          *
 443          * @param wc where-Clause
 444          * @param ob orderBy-Clause
 445          * @param offset ab welchem Datensatz
 446          * @return EntityList mit den gematchten Entities
 447          * @exception StorageObjectException
 448          */
 449
 450         public EntityList selectByWhereClause(String whereClause, String orderBy, int offset)
 451                 throws StorageObjectException {
 452                 return selectByWhereClause(whereClause, orderBy, offset, defaultLimit);
 453         }
 454
 455
 456         /**
 457          * select-Operator liefert eine EntityListe mit den gematchten Datensätzen zurück.
 458          * @param wc where-Clause
 459          * @param ob orderBy-Clause
 460          * @param offset ab welchem Datensatz
 461          * @param limit wieviele Datensätze
 462          * @return EntityList mit den gematchten Entities
 463          * @exception StorageObjectException
 464          */
 465
 466         public EntityList selectByWhereClause(String wc, String ob, int offset, int limit)
 467                 throws StorageObjectException
 468   {
 469
 470     // check o_store for entitylist
 471     if ( StoreUtil.implementsStorableObject(theEntityClass) ) {
 472       StoreIdentifier search_sid =
 473         new StoreIdentifier( theEntityClass,
 474                              StoreContainerType.STOC_TYPE_ENTITYLIST,
 475                              StoreUtil.getEntityListUniqueIdentifierFor(theTable,wc,ob,offset,limit) );
 476       EntityList hit = (EntityList)o_store.use(search_sid);
 477       if ( hit!=null ) {
 478         theLog.printDebugInfo("CACHE (hit): " + search_sid.toString());
 479         return hit;
 480       }
 481     }
 482
 483                 // local
 484                 EntityList    theReturnList=null;
 485                 Connection    con=null; Statement stmt=null;
 486                 ResultSet     rs;
 487                 int           offsetCount = 0, count=0;
 488
 489                 // build sql-statement
 490
 491                 /** @todo count sql string should only be assembled if we really count
 492                  *  see below at the end of method //rk */
 493
 494                 if (wc != null && wc.length() == 0) {
 495                         wc = null;
 496                 }
 497                 StringBuffer countSql = new StringBuffer("select count(*) from ").append(theTable);
 498                 StringBuffer selectSql = new StringBuffer("select * from ").append(theTable);
 499                 if (wc != null) {
 500                         selectSql.append(" where ").append(wc);
 501                         countSql.append(" where ").append(wc);
 502                 }
 503                 if (ob != null && !(ob.length() == 0)) {
 504                         selectSql.append(" order by ").append(ob);
 505                 }
 506                 if (theAdaptor.hasLimit()) {
 507                         if (limit > -1 && offset > -1) {
 508                                 selectSql.append(" limit ");
 509                                 if (theAdaptor.reverseLimit()) {
 510                                         selectSql.append(limit).append(",").append(offset);
 511                                 }
 512                                 else {
 513                                         selectSql.append(offset).append(",").append(limit);
 514                                 }
 515                         }
 516                 }
 517
 518                 // execute sql
 519                 try {
 520                         con = getPooledCon();
 521                         stmt = con.createStatement();
 522
 523                         // selecting...
 524                         rs = executeSql(stmt, selectSql.toString());
 525                         if (rs != null) {
 526                                 if (!evaluatedMetaData) evalMetaData(rs.getMetaData());
 527
 528                                 theReturnList = new EntityList();
 529                                 Entity theResultEntity;
 530                                 while (rs.next()) {
 531                                         theResultEntity = makeEntityFromResultSet(rs);
 532                                         theReturnList.add(theResultEntity);
 533                                         offsetCount++;
 534                                 }
 535                                 rs.close();
 536                         }
 537
 538                         // making entitylist infos
 539                         if (!(theAdaptor.hasLimit())) count = offsetCount;
 540
 541                         if (theReturnList != null) {
 542                                 // now we decide if we have to know an overall count...
 543                                 count=offsetCount;
 544                                 if (limit > -1 && offset > -1) {
 545                                         if (offsetCount==limit) {
 546                                                 /** @todo counting should be deffered to entitylist
 547                                                  *  getSize() should be used */
 548                                                 rs = executeSql(stmt, countSql.toString());
 549                                                 if (rs != null) {
 550                                                         if ( rs.next() ) count = rs.getInt(1);
 551                                                         rs.close();
 552                                                 }
 553                                                 else theLog.printError("Could not count: " + countSql);
 554                                         }
 555                                 }
 556                                 theReturnList.setCount(count);
 557                                 theReturnList.setOffset(offset);
 558                                 theReturnList.setWhere(wc);
 559                                 theReturnList.setOrder(ob);
 560         theReturnList.setStorage(this);
 561         theReturnList.setLimit(limit);
 562                                 if ( offset >= limit )
 563                                         theReturnList.setPrevBatch(offset - limit);
 564                                 if ( offset+offsetCount < count )
 565                                         theReturnList.setNextBatch(offset + limit);
 566         if ( StoreUtil.implementsStorableObject(theEntityClass) ) {
 567           StoreIdentifier sid=theReturnList.getStoreIdentifier();
 568           theLog.printDebugInfo("CACHE (add): " + sid.toString());
 569           o_store.add(sid);
 570         }
 571                         }
 572                 }
 573                 catch (SQLException sqe) { throwSQLException(sqe, "selectByWhereClause"); }
 574                 finally { freeConnection(con, stmt); }
 575
 576                 return  theReturnList;
 577         }
 578
 579
 580         /**
 581          *  Bastelt aus einer Zeile der Datenbank ein EntityObjekt.
 582          *
 583          *  @param rs Das ResultSetObjekt.
 584          *  @return Entity Die Entity.
 585          */
 586         private Entity makeEntityFromResultSet (ResultSet rs)
 587                 throws StorageObjectException
 588         {
 589                 /** @todo OS: get Pkey from ResultSet and consult ObjectStore */
 590                 HashMap theResultHash = new HashMap();
 591                 String theResult = null;
 592                 int theType;
 593                 Entity returnEntity = null;
 594                 try {
 595                         int size = metadataFields.size();
 596                         for (int i = 0; i < size; i++) {
 597                                 // alle durchlaufen bis nix mehr da
 598
 599                                 theType = metadataTypes[i];
 600                                 if (theType == java.sql.Types.LONGVARBINARY) {
 601                                         InputStreamReader is = (InputStreamReader)rs.getCharacterStream(i + 1);
 602                                         if (is != null) {
 603                                                 char[] data = new char[32768];
 604                                                 StringBuffer theResultString = new StringBuffer();
 605                                                 int len;
 606                                                 while ((len = is.read(data)) > 0) {
 607                                                         theResultString.append(data, 0, len);
 608                                                 }
 609                                                 is.close();
 610                                                 theResult = theResultString.toString();
 611                                         }
 612                                         else {
 613                                                 theResult = null;
 614                                         }
 615                                 }
 616                                 else {
 617                                         theResult = getValueAsString(rs, (i + 1), theType);
 618                                 }
 619                                 if (theResult != null) {
 620                                         theResultHash.put(metadataFields.get(i), theResult);
 621                                 }
 622                         }
 623       if (theEntityClass != null) {
 624         returnEntity = (Entity)theEntityClass.newInstance();
 625         returnEntity.setValues(theResultHash);
 626         returnEntity.setStorage(myselfDatabase);
 627         if ( returnEntity instanceof StorableObject ) {
 628           theLog.printDebugInfo("CACHE: ( in) " + returnEntity.getId() + " :"+theTable);
 629           o_store.add(((StorableObject)returnEntity).getStoreIdentifier());
 630         }
 631       } else {
 632         throwStorageObjectException("Internal Error: theEntityClass not set!");
 633       }
 634                 } catch (IllegalAccessException e) {
 635                         throwStorageObjectException("Kein Zugriff! -- " + e.toString());
 636                 } catch (IOException e) {
 637                         throwStorageObjectException("IOException! -- " + e.toString());
 638                 } catch (InstantiationException e) {
 639                         throwStorageObjectException("Keine Instantiiierung! -- " + e.toString());
 640                 } catch (SQLException sqe) {
 641                         throwSQLException(sqe, "makeEntityFromResultSet");
 642                         return  null;
 643                 }
 644                 return  returnEntity;
 645         }
 646
 647         /**
 648          * insert-Operator: fügt eine Entity in die Tabelle ein. Eine Spalte WEBDB_CREATE
 649          * wird automatisch mit dem aktuellen Datum gefuellt.
 650          *
 651          * @param theEntity
 652          * @return der Wert des Primary-keys der eingefügten Entity
 653          */
 654         public String insert (Entity theEntity) throws StorageObjectException {
 655                 //cache
 656                 invalidatePopupCache();
 657
 658     // invalidating all EntityLists corresponding with theEntityClass
 659     if ( StoreUtil.implementsStorableObject(theEntityClass) ) {
 660       StoreContainerType stoc_type =
 661         StoreContainerType.valueOf( theEntityClass,
 662                                     StoreContainerType.STOC_TYPE_ENTITYLIST);
 663       o_store.invalidate(stoc_type);
 664     }
 665
 666                 String returnId = null;
 667                 Connection con = null; PreparedStatement pstmt = null;
 668
 669     try {
 670                         ArrayList streamedInput = theEntity.streamedInput();
 671                         StringBuffer f = new StringBuffer();
 672                         StringBuffer v = new StringBuffer();
 673                         String aField, aValue;
 674                         boolean firstField = true;
 675                         // make sql-string
 676                         for (int i = 0; i < getFields().size(); i++) {
 677                                 aField = (String)getFields().get(i);
 678                                 if (!aField.equals(thePKeyName)) {
 679                                         aValue = null;
 680                                         // sonderfaelle
 681                                         if (aField.equals("webdb_create") ||
 682               aField.equals("webdb_lastchange")) {
 683                                                 aValue = "NOW()";
 684                                         }
 685                                         else {
 686                                                 if (streamedInput != null && streamedInput.contains(aField)) {
 687                                                         aValue = "?";
 688                                                 }
 689                                                 else {
 690                                                         if (theEntity.hasValueForField(aField)) {
 691                                                                 aValue = "'" + StringUtil.quote((String)theEntity.getValue(aField))
 692                                                                                 + "'";
 693                                                         }
 694                                                 }
 695                                         }
 696                                         // wenn Wert gegeben, dann einbauen
 697                                         if (aValue != null) {
 698                                                 if (firstField == false) {
 699                                                         f.append(",");
 700                                                         v.append(",");
 701                                                 }
 702                                                 else {
 703                                                         firstField = false;
 704                                                 }
 705                                                 f.append(aField);
 706                                                 v.append(aValue);
 707                                         }
 708                                 }
 709                         }         // end for
 710                         // insert into db
 711                         StringBuffer sqlBuf = new StringBuffer("insert into ").append(theTable).append("(").append(f).append(") values (").append(v).append(")");
 712                         String sql = sqlBuf.toString();
 713                         theLog.printInfo("INSERT: " + sql);
 714                         con = getPooledCon();
 715                         con.setAutoCommit(false);
 716                         pstmt = con.prepareStatement(sql);
 717                         if (streamedInput != null) {
 718                                 for (int i = 0; i < streamedInput.size(); i++) {
 719                                         String inputString = (String)theEntity.getValue((String)streamedInput.get(i));
 720                                         pstmt.setBytes(i + 1, inputString.getBytes());
 721                                 }
 722                         }
 723                         int ret = pstmt.executeUpdate();
 724                         if(ret == 0){
 725                                 //insert failed
 726                                 return null;
 727                         }
 728                         pstmt = con.prepareStatement(theAdaptor.getLastInsertSQL((Database)myselfDatabase));
 729                         ResultSet rs = pstmt.executeQuery();
 730                         rs.next();
 731                         returnId = rs.getString(1);
 732                         theEntity.setId(returnId);
 733                 } catch (SQLException sqe) {
 734                         throwSQLException(sqe, "insert");
 735                 } finally {
 736                         try {
 737                                 con.setAutoCommit(true);
 738                         } catch (Exception e) {
 739                                 ;
 740                         }
 741                         freeConnection(con, pstmt);
 742                 }
 743     /** @todo store entity in o_store */
 744                 return  returnId;
 745         }
 746
 747         /**
 748          * update-Operator: aktualisiert eine Entity. Eine Spalte WEBDB_LASTCHANGE
 749          * wird automatisch mit dem aktuellen Datum gefuellt.
 750          *
 751          * @param theEntity
 752          */
 753         public void update (Entity theEntity) throws StorageObjectException
 754   {
 755                 Connection con = null; PreparedStatement pstmt = null;
 756                 /** @todo this is stupid: why do we prepare statement, when we
 757                  *  throw it away afterwards. should be regular statement
 758                  *  update/insert could better be one routine called save()
 759                  *  that chooses to either insert or update depending if we
 760                  *  have a primary key in the entity. i don't know if we
 761                  *  still need the streamed input fields. // rk  */
 762
 763                 /** @todo extension: check if Entity did change, otherwise we don't need
 764      *  the roundtrip to the database */
 765
 766                 /** invalidating corresponding entitylists in o_store*/
 767     if ( StoreUtil.implementsStorableObject(theEntityClass) ) {
 768       StoreContainerType stoc_type =
 769         StoreContainerType.valueOf( theEntityClass,
 770                                     StoreContainerType.STOC_TYPE_ENTITYLIST);
 771       o_store.invalidate(stoc_type);
 772     }
 773
 774                 ArrayList streamedInput = theEntity.streamedInput();
 775                 String id = theEntity.getId();
 776                 String aField;
 777                 StringBuffer fv = new StringBuffer();
 778                 boolean firstField = true;
 779                 //cache
 780                 invalidatePopupCache();
 781                 // build sql statement
 782                 for (int i = 0; i < getFields().size(); i++) {
 783                         aField = (String)metadataFields.get(i);
 784                         // only normal cases
 785                         if (!(aField.equals(thePKeyName) || aField.equals("webdb_create") ||
 786                                         aField.equals("webdb_lastchange") || (streamedInput != null && streamedInput.contains(aField)))) {
 787                                 if (theEntity.hasValueForField(aField)) {
 788                                         if (firstField == false) {
 789                                                 fv.append(", ");
 790                                         }
 791                                         else {
 792                                                 firstField = false;
 793                                         }
 794                                         fv.append(aField).append("='").append(StringUtil.quote((String)theEntity.getValue(aField))).append("'");
 795                                 }
 796                         }
 797                 }
 798                 StringBuffer sql = new StringBuffer("update ").append(theTable).append(" set ").append(fv);
 799                 // exceptions
 800                 if (metadataFields.contains("webdb_lastchange")) {
 801                         sql.append(",webdb_lastchange=NOW()");
 802                 }
 803     // special case: the webdb_create requires the field in yyyy-mm-dd HH:mm
 804     // format so anything extra will be ignored. -mh
 805                 if (metadataFields.contains("webdb_create") &&
 806         theEntity.hasValueForField("webdb_create")) {
 807       // minimum of 10 (yyyy-mm-dd)...
 808       if (theEntity.getValue("webdb_create").length() >= 10) {
 809         String dateString = theEntity.getValue("webdb_create");
 810         // if only 10, then add 00:00 so it doesn't throw a ParseException
 811         if (dateString.length() == 10)
 812           dateString=dateString+" 00:00";
 813
 814         // TimeStamp stuff
 815         try {
 816           java.util.Date d = _dateFormatterIn.parse(dateString);
 817           Timestamp tStamp = new Timestamp(d.getTime());
 818           sql.append(",webdb_create='"+tStamp.toString()+"'");
 819         } catch (ParseException e) {
 820           throw new StorageObjectException(e.toString());
 821         }
 822       }
 823                 }
 824                 if (streamedInput != null) {
 825                         for (int i = 0; i < streamedInput.size(); i++) {
 826                                 sql.append(",").append(streamedInput.get(i)).append("=?");
 827                         }
 828                 }
 829                 sql.append(" where id=").append(id);
 830                 theLog.printInfo("UPDATE: " + sql);
 831                 // execute sql
 832                 try {
 833                         con = getPooledCon();
 834                         con.setAutoCommit(false);
 835                         pstmt = con.prepareStatement(sql.toString());
 836                         if (streamedInput != null) {
 837                                 for (int i = 0; i < streamedInput.size(); i++) {
 838                                         String inputString = theEntity.getValue((String)streamedInput.get(i));
 839                                         pstmt.setBytes(i + 1, inputString.getBytes());
 840                                 }
 841                         }
 842                         pstmt.executeUpdate();
 843                 } catch (SQLException sqe) {
 844                         throwSQLException(sqe, "update");
 845                 } finally {
 846                         try {
 847                                 con.setAutoCommit(true);
 848                         } catch (Exception e) {
 849                                 ;
 850                         }
 851                         freeConnection(con, pstmt);
 852                 }
 853         }
 854
 855         /*
 856          *   delete-Operator
 857          *   @param id des zu loeschenden Datensatzes
 858          *   @return boolean liefert true zurueck, wenn loeschen erfolgreich war.
 859          */
 860         public boolean delete (String id) throws StorageObjectException {
 861
 862                 invalidatePopupCache();
 863     // ostore send notification
 864     if ( StoreUtil.implementsStorableObject(theEntityClass) ) {
 865       String uniqueId = id;
 866       if ( theEntityClass.equals(StorableObjectEntity.class) )
 867         uniqueId+="@"+theTable;
 868                         theLog.printInfo("CACHE: (del) " + id);
 869                         StoreIdentifier search_sid =
 870         new StoreIdentifier(theEntityClass, StoreContainerType.STOC_TYPE_ENTITY, uniqueId);
 871       o_store.invalidate(search_sid);
 872                 }
 873
 874                 /** @todo could be prepared Statement */
 875                 Statement stmt = null; Connection con = null;
 876                 int res = 0;
 877                 String sql="delete from "+theTable+" where "+thePKeyName+"='"+id+"'";
 878                 theLog.printInfo("DELETE " + sql);
 879                 try {
 880                         con = getPooledCon(); stmt = con.createStatement();
 881                         res = stmt.executeUpdate(sql);
 882                 }
 883     catch (SQLException sqe) { throwSQLException(sqe, "delete"); }
 884     finally { freeConnection(con, stmt); }
 885
 886                 return  (res > 0) ? true : false;
 887         }
 888
 889         /* noch nicht implementiert.
 890          * @return immer false
 891          */
 892         public boolean delete (EntityList theEntityList) {
 893                 invalidatePopupCache();
 894                 return  false;
 895         }
 896
 897         /**
 898          * Diese Methode sollte ueberschrieben werden, wenn fuer die abgeleitete Database-Klasse
 899          * eine SimpleList mit Standard-Popupdaten erzeugt werden koennen soll.
 900          * @return null
 901          */
 902         public SimpleList getPopupData () throws StorageObjectException {
 903                 return  null;
 904         }
 905
 906         /**
 907          *  Holt Daten fuer Popups.
 908          *  @param name  Name des Feldes.
 909          *  @param hasNullValue  Wenn true wird eine leerer  Eintrag fuer die Popups erzeugt.
 910          *  @return SimpleList Gibt freemarker.template.SimpleList zurueck.
 911          */
 912         public SimpleList getPopupData (String name, boolean hasNullValue)
 913                 throws StorageObjectException {
 914                 return  getPopupData(name, hasNullValue, null);
 915         }
 916
 917         /**
 918          *  Holt Daten fuer Popups.
 919          *  @param name  Name des Feldes.
 920          *  @param hasNullValue  Wenn true wird eine leerer  Eintrag fuer die Popups erzeugt.
 921          *  @param where  Schraenkt die Selektion der Datensaetze ein.
 922          *  @return SimpleList Gibt freemarker.template.SimpleList zurueck.
 923          */
 924         public SimpleList getPopupData (String name, boolean hasNullValue, String where) throws StorageObjectException {
 925          return  getPopupData(name, hasNullValue, where, null);
 926         }
 927
 928         /**
 929          *  Holt Daten fuer Popups.
 930          *  @param name  Name des Feldes.
 931          *  @param hasNullValue  Wenn true wird eine leerer  Eintrag fuer die Popups erzeugt.
 932          *  @param where  Schraenkt die Selektion der Datensaetze ein.
 933          *  @param order  Gibt ein Feld als Sortierkriterium an.
 934          *  @return SimpleList Gibt freemarker.template.SimpleList zurueck.
 935          */
 936         public SimpleList getPopupData (String name, boolean hasNullValue, String where, String order) throws StorageObjectException {
 937                 // caching
 938                 if (hasPopupCache && popupCache != null)
 939                         return  popupCache;
 940                 SimpleList simpleList = null;
 941                 Connection con = null;
 942                 Statement stmt = null;
 943                 // build sql
 944                 StringBuffer sql = new StringBuffer("select ").append(thePKeyName)
 945                                                                                                                                                                 .append(",").append(name).append(" from ")
 946                                                                                                                                                                 .append(theTable);
 947                 if (where != null && !(where.length() == 0))
 948                         sql.append(" where ").append(where);
 949                 sql.append(" order by ");
 950                 if (order != null && !(order.length() == 0))
 951                         sql.append(order);
 952                 else
 953                         sql.append(name);
 954                 // execute sql
 955                 try {
 956                         con = getPooledCon();
 957                 } catch (Exception e) {
 958                         throw new StorageObjectException(e.toString());
 959                 }
 960                 try {
 961                         stmt = con.createStatement();
 962                         ResultSet rs = executeSql(stmt, sql.toString());
 963
 964                         if (rs != null) {
 965                                 if (!evaluatedMetaData) get_meta_data();
 966                                 simpleList = new SimpleList();
 967                                 // if popup has null-selector
 968                                 if (hasNullValue) simpleList.add(POPUP_EMTYLINE);
 969
 970                                 SimpleHash popupDict;
 971                                 while (rs.next()) {
 972                                         popupDict = new SimpleHash();
 973                                         popupDict.put("key", getValueAsString(rs, 1, thePKeyType));
 974                                         popupDict.put("value", rs.getString(2));
 975                                         simpleList.add(popupDict);
 976                                 }
 977                                 rs.close();
 978                         }
 979                 } catch (Exception e) {
 980                         theLog.printError("getPopupData: "+e.toString());
 981                         throw new StorageObjectException(e.toString());
 982                 } finally {
 983                         freeConnection(con, stmt);
 984                 }
 985
 986                 if (hasPopupCache) popupCache = simpleList;
 987                 return  simpleList;
 988         }
 989
 990         /**
 991          * Liefert alle Daten der Tabelle als SimpleHash zurueck. Dies wird verwandt,
 992          * wenn in den Templates ein Lookup-Table benoetigt wird. Sollte nur bei kleinen
 993          * Tabellen Verwendung finden.
 994          * @return SimpleHash mit den Tabellezeilen.
 995          */
 996         public SimpleHash getHashData () {
 997                 /** @todo dangerous! this should have a flag to be enabled, otherwise
 998                  *  very big Hashes could be returned */
 999                 if (hashCache == null) {
1000                         try {
1001                                 hashCache = HTMLTemplateProcessor.makeSimpleHash(selectByWhereClause("",
1002                                                 -1));
1003                         } catch (StorageObjectException e) {
1004                                 theLog.printDebugInfo(e.toString());
1005                         }
1006                 }
1007                 return  hashCache;
1008         }
1009
1010         /* invalidates the popupCache
1011          */
1012         protected void invalidatePopupCache () {
1013                 /** @todo  invalidates toooo much */
1014                 popupCache = null;
1015                 hashCache = null;
1016         }
1017
1018         /**
1019          * Diese Methode fuehrt den Sqlstring <i>sql</i> aus und timed im Logfile.
1020          * @param stmt Statemnt
1021          * @param sql Sql-String
1022          * @return ResultSet
1023          * @exception StorageObjectException
1024          */
1025         public ResultSet executeSql (Statement stmt, String sql)
1026                 throws StorageObjectException, SQLException
1027         {
1028                 long startTime = System.currentTimeMillis();
1029                 ResultSet rs;
1030                 try {
1031                         rs = stmt.executeQuery(sql);
1032                         theLog.printInfo((System.currentTimeMillis() - startTime) + "ms. for: "
1033                                 + sql);
1034                 }
1035                 catch (SQLException e)
1036                 {
1037                         theLog.printDebugInfo("Failed: " + (System.currentTimeMillis()
1038                                                                                                                 - startTime) + "ms. for: "+ sql);
1039                         throw e;
1040                 }
1041
1042                 return  rs;
1043         }
1044
1045         /**
1046          * Fuehrt Statement stmt aus und liefert Resultset zurueck. Das SQL-Statment wird
1047          * getimed und geloggt.
1048          * @param stmt PreparedStatement mit der SQL-Anweisung
1049          * @return Liefert ResultSet des Statements zurueck.
1050          * @exception StorageObjectException, SQLException
1051          */
1052         public ResultSet executeSql (PreparedStatement stmt)
1053                 throws StorageObjectException, SQLException {
1054
1055                 long startTime = (new java.util.Date()).getTime();
1056                 ResultSet rs = stmt.executeQuery();
1057                 theLog.printInfo((new java.util.Date().getTime() - startTime) + "ms.");
1058                 return  rs;
1059         }
1060
1061                 /**
1062          * returns the number of rows in the table
1063          */
1064         public int getSize(String where)
1065                 throws SQLException,StorageObjectException
1066         {
1067                 long  startTime = System.currentTimeMillis();
1068                 String sql = "SELECT Count(*) FROM "+ theTable;
1069                 if (where != null && !(where.length() == 0))
1070                   sql = sql + " where " + where;
1071                 Connection con = null;
1072                 Statement stmt = null;
1073                 int result = 0;
1074
1075                 try {
1076                         con = getPooledCon();
1077                         stmt = con.createStatement();
1078                         ResultSet rs = executeSql(stmt,sql);
1079                         while(rs.next()){
1080                                 result = rs.getInt(1);
1081                         }
1082                 } catch (SQLException e) {
1083                         theLog.printError(e.toString());
1084                 } finally {
1085                         freeConnection(con,stmt);
1086                 }
1087                 //theLog.printInfo(theTable + " has "+ result +" rows where " + where);
1088                 theLog.printInfo((System.currentTimeMillis() - startTime) + "ms. for: "
1089                                                                                 + sql);
1090                 return result;
1091         }
1092
1093         public int executeUpdate(Statement stmt, String sql)
1094                 throws StorageObjectException, SQLException
1095         {
1096                 int rs;
1097                 long  startTime = (new java.util.Date()).getTime();
1098                 try
1099                 {
1100                         rs = stmt.executeUpdate(sql);
1101                         theLog.printInfo((new java.util.Date().getTime() - startTime) + "ms. for: "
1102                                                                                                 + sql);
1103                 }
1104                 catch (SQLException e)
1105                 {
1106                         theLog.printDebugInfo("Failed: " + (new java.util.Date().getTime()
1107                                                                                                                 - startTime) + "ms. for: "+ sql);
1108                         throw e;
1109                 }
1110                 return rs;
1111         }
1112
1113         public int executeUpdate(String sql)
1114                 throws StorageObjectException, SQLException
1115         {
1116                 int result=-1;
1117                 long  startTime = (new java.util.Date()).getTime();
1118                 Connection con=null;PreparedStatement pstmt=null;
1119                 try {
1120                         con=getPooledCon();
1121                         pstmt = con.prepareStatement(sql);
1122                         result = pstmt.executeUpdate();
1123                 }
1124                 catch (Exception e) {
1125                         theLog.printDebugInfo("settimage :: setImage gescheitert: "+e.toString());
1126                         throw new StorageObjectException("executeUpdate failed: "+e.toString());
1127                 }
1128                 finally { freeConnection(con,pstmt); }
1129                 theLog.printInfo((new java.util.Date().getTime() - startTime) + "ms. for: "
1130                                                                                 + sql);
1131                 return result;
1132         }
1133
1134         /**
1135          * Wertet ResultSetMetaData aus und setzt interne Daten entsprechend
1136          * @param md ResultSetMetaData
1137          * @exception StorageObjectException
1138          */
1139         private void evalMetaData (ResultSetMetaData md)
1140                 throws StorageObjectException {
1141
1142                 this.evaluatedMetaData = true;
1143                 this.metadataFields = new ArrayList();
1144                 this.metadataLabels = new ArrayList();
1145                 this.metadataNotNullFields = new ArrayList();
1146                 try {
1147                         int numFields = md.getColumnCount();
1148                         this.metadataTypes = new int[numFields];
1149                         String aField;
1150                         int aType;
1151                         for (int i = 1; i <= numFields; i++) {
1152                                 aField = md.getColumnName(i);
1153                                 metadataFields.add(aField);
1154                                 metadataLabels.add(md.getColumnLabel(i));
1155                                 aType = md.getColumnType(i);
1156                                 metadataTypes[i - 1] = aType;
1157                                 if (aField.equals(thePKeyName)) {
1158                                         thePKeyType = aType; thePKeyIndex = i;
1159                                 }
1160                                 if (md.isNullable(i) == md.columnNullable) {
1161                                         metadataNotNullFields.add(aField);
1162                                 }
1163                         }
1164                 } catch (SQLException e) {
1165                         throwSQLException(e, "evalMetaData");
1166                 }
1167         }
1168
1169         /**
1170          *  Wertet die Metadaten eines Resultsets fuer eine Tabelle aus,
1171          *  um die alle Columns und Typen einer Tabelle zu ermitteln.
1172          */
1173         private void get_meta_data () throws StorageObjectException {
1174                 Connection con = null;
1175                 PreparedStatement pstmt = null;
1176                 String sql = "select * from " + theTable + " where 0=1";
1177                 try {
1178                         con = getPooledCon();
1179                         pstmt = con.prepareStatement(sql);
1180                         theLog.printInfo("METADATA: " + sql);
1181                         ResultSet rs = pstmt.executeQuery();
1182                         evalMetaData(rs.getMetaData());
1183                         rs.close();
1184                 } catch (SQLException e) {
1185                         throwSQLException(e, "get_meta_data");
1186                 } finally {
1187                         freeConnection(con, pstmt);
1188                 }
1189         }
1190
1191
1192         public Connection getPooledCon() throws StorageObjectException {
1193                 /* @todo , doublecheck but I'm pretty sure that this is unnecessary. -mh
1194                         try{
1195                         Class.forName("com.codestudio.sql.PoolMan").newInstance();
1196                 } catch (Exception e){
1197                         throw new StorageObjectException("Could not find the PoolMan Driver"
1198                                                                                                                                                                 +e.toString());
1199                 }*/
1200                 Connection con = null;
1201                 try{
1202                         con = SQLManager.getInstance().requestConnection();
1203                 } catch(SQLException e){
1204                         theLog.printError("could not connect to the database "+e.toString());
1205                         System.err.println("could not connect to the database "+e.toString());
1206                         throw new StorageObjectException("Could not connect to the database"+
1207                                                                                                                                                                 e.toString());
1208                 }
1209                 return con;
1210         }
1211
1212         public void freeConnection (Connection con, Statement stmt)
1213                 throws StorageObjectException {
1214                 SQLManager.getInstance().closeStatement(stmt);
1215                 SQLManager.getInstance().returnConnection(con);
1216         }
1217
1218         /**
1219          * Wertet SQLException aus und wirft dannach eine StorageObjectException
1220          * @param sqe SQLException
1221          * @param wo Funktonsname, in der die SQLException geworfen wurde
1222          * @exception StorageObjectException
1223          */
1224         protected void throwSQLException (SQLException sqe, String wo)
1225                 throws StorageObjectException {
1226                 String state = "";
1227                 String message = "";
1228                 int vendor = 0;
1229                 if (sqe != null) {
1230                         state = sqe.getSQLState();
1231                         message = sqe.getMessage();
1232                         vendor = sqe.getErrorCode();
1233                 }
1234                 theLog.printError(state + ": " + vendor + " : " + message + " Funktion: "
1235                                 + wo);
1236                 throw  new StorageObjectException((sqe == null) ? "undefined sql exception" :
1237                                 sqe.toString());
1238         }
1239
1240         protected void _throwStorageObjectException (Exception e, String wo)
1241                 throws StorageObjectException {
1242                 if (e != null) {
1243                                 theLog.printError(e.toString()+ wo);
1244                                 throw  new StorageObjectException(wo + e.toString());
1245                 } else {
1246                                 theLog.printError(wo);
1247                                 throw  new StorageObjectException(wo);
1248                 }
1249
1250         }
1251
1252         /**
1253          * Loggt Fehlermeldung mit dem Parameter Message und wirft dannach
1254          * eine StorageObjectException
1255          * @param message Nachricht mit dem Fehler
1256          * @exception StorageObjectException
1257          */
1258         void throwStorageObjectException (String message)
1259                 throws StorageObjectException {
1260                 _throwStorageObjectException(null, message);
1261         }
1262
1263 }
1264
1265
1266