Examples of org.exolab.castor.persist.spi.Persistence

org.exolab.castor.persist.spi.Persistence
The persistence engine implements this interface in order to allow objects to be created, removed, loaded, stored, locked and checked for dirtyness.
The caller takes full responsibility to assure integrity of transactions and object caching and only relies on the engine to assist in assuring that through the mechanisms available to it.
All method calls provide an open connection into the persistence storage. The connection is opened by and maintained in the context of a transaction. The type of the connection depends on the persistence engine (JDBC, JNDI, etc).
All method calls provide the object fields and the object identity. The engine must always use the identity passed in the method call and never the identity contained in the object itself.
The stamp is an arbitrary object that is returned on object creation and loading and passed when performing a dirty check. The stamp can be used to detect object dirtyness in a more efficient manner in database that support a stamping mechanism (e.g. Oracle RAWID, Sybase TIMESTAMP).
An implementation of this object must be re-entrant and thread safe. It must depend on the connection passed in each method call and never hold a reference to a connection. @author Assaf Arkin @version $Revision: 7932 $ $Date: 2006-04-26 16:24:34 -0600 (Wed, 26 Apr 2006) $ @see org.castor.persist.TransactionContext @see org.exolab.castor.persist.spi.PersistenceQuery

        if (!(clsDesc.hasNature(ClassDescriptorJDONature.class.getName()))) { 
            return null; 
        }
        
        try {
            Persistence sqlEngine = (SQLEngine) _classDescriptorToPersistence.get(clsDesc);
            if (sqlEngine == null) {
                sqlEngine = new SQLEngine(clsDesc, this, null);
                _classDescriptorToPersistence.put(clsDesc, sqlEngine);
            }
            return sqlEngine;

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            final LockEngine lock, final PersistenceFactory factory)
    throws MappingException, ClassNotFoundException {
    
        Vector result = new Vector();
        ClassMolder mold;
        Persistence persist;
        ClassDescriptor desc;


        // TODO[WG]: remove down-cast
        JDOClassDescriptorResolver jdoCDR;
        jdoCDR = (JDOClassDescriptorResolver) cdResolver;

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                            _engine.getDescriptor());
                    String[] clsDescIdNames = SQLHelper.getIdentitySQLNames(classDescriptor);
                    expr.addOuterJoin(_mapTo, engDescIdNames, 
                            clsDescNature.getTableName(), clsDescIdNames);


                    Persistence persistenceEngine;
                    try {
                        persistenceEngine = _factory.getPersistence(classDescriptor);
                    } catch (MappingException e) {
                        throw new QueryException(
                                "Problem obtaining persistence engine for ClassDescriptor "

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            if (leafDescriptor != null) {
                if (!leafDescriptor.getJavaClass().getName().equals(
                        _requestedEngine.getDescriptor().getJavaClass().getName())) {
                    originalFieldNumber = ((Integer) returnValues[1]).intValue();
                    
                    Persistence newEngine = null;
                    try {
                        newEngine = _requestedFactory.getPersistence(leafDescriptor);
                    } catch (MappingException e) {
                        LOG.error("Problem obtaining persistence engine for "
                                + leafDescriptor.getJavaClass().getName(), e);

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    {


        Vector result = new Vector();
        Enumeration enumeration;
        ClassMolder mold;
        Persistence persist;
        ClassDescriptor desc;


        DatingService ds = new DatingService( loader.getClassLoader() );


        enumeration = loader.listJavaClasses();

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Related Classes of org.exolab.castor.persist.spi.Persistence

org.castor.cpa.persistence.sql.driver.BaseFactory

org.exolab.castor.jdo.engine.SQLQuery

org.exolab.castor.jdo.engine.SQLStatementLoad

org.exolab.castor.persist.ClassMolder

org.exolab.castor.persist.ClassMolderHelper

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