Examples of org.exolab.castor.persist.ClassMolder

org.exolab.castor.persist.ClassMolder
ClassMolder is a 'binder' for one type of data object and its corresponding {@link Persistence}. For example, when ClassMolder is asked to load an object, it acquires the field values from {@link Persistence} and binds them into the target object.
It resolves relations via {@link TransactionContext} and subsequently binds these related objects into the target object, too.
Apart from loading, ClassMolder is also responsible for storing, removing, creating an object to and from a persistence storage, as well as reverting an object to its previous state.
Each instance of ClassMolder deals with exactly one persistable type, interacts with one instance of Persistent and belongs to one {@link LockEngine}.
@author Thomas Yip @author Bruce Snyder @author Werner Guttmann

            boolean isCreating = _tracker.isCreating(toPrepare);
            boolean isDeleted = _tracker.isDeleted(toPrepare);
            boolean needsPersist = _tracker.isUpdatePersistNeeded(toPrepare);
            boolean needsCache = _tracker.isUpdateCacheNeeded(toPrepare);


            ClassMolder molder = _tracker.getMolderForObject(toPrepare);
            LockEngine engine = molder.getLockEngine();
            OID oid = _tracker.getOIDForObject(toPrepare);


            if (!isDeleted && !isCreating) {
                if (needsPersist) {
                    engine.store(this, oid, toPrepare);
                }
                if (needsCache) {
                    engine.softLock(this, oid, _lockTimeout);
                }
            }


            // do the callback
            if (!isDeleted && _callback != null) {
                try {
                    _callback.storing(toPrepare, needsCache);
                } catch (Exception except) {
                    throw new TransactionAbortedException(Messages.format(
                            "persist.nested", except), except);
                }
            } else if (!isDeleted && molder.getCallback() != null) {
                try {
                    molder.getCallback().storing(toPrepare, needsCache);
                    // updatePersistNeeded implies updateCacheNeeded
                } catch (Exception except) {
                    throw new TransactionAbortedException(Messages.format(
                            "persist.nested", except), except);
                }

View Full Code Here

        Collection readWriteObjects = _tracker.getReadWriteObjects();
        Iterator it = readWriteObjects.iterator();
        while (it.hasNext()) {
            Object toCommit = it.next();


            ClassMolder molder = _tracker.getMolderForObject(toCommit);
            LockEngine engine = molder.getLockEngine();
            OID oid = _tracker.getOIDForObject(toCommit);


            if (_tracker.isDeleted(toCommit)) {
                // Object has been deleted inside transaction,
                // engine must forget about it.
                engine.forgetObject(this, oid);
            } else {
                // Object has been created/accessed inside the
                // transaction, release its lock.
                if (_tracker.isUpdateCacheNeeded(toCommit)) {
                    engine.updateCache(this, oid, toCommit);
                }


                engine.releaseLock(this, oid);
            }


            // Call our release callback on all processed objects.
            if (_callback != null) {
                _callback.releasing(toCommit, true);
            } else if (molder.getCallback() != null) {
                molder.getCallback().releasing(toCommit, true);
            }
        }


        // Call txcommited() before objects are removed to allow
        // TxSynchronizable to iterate through the objects.

View Full Code Here


            // then forget object or release lock on them
            it = readWriteObjects.iterator();
            while (it.hasNext()) {
                Object object = it.next();
                ClassMolder molder = _tracker.getMolderForObject(object);
                LockEngine engine = molder.getLockEngine();
                oid = _tracker.getOIDForObject(object);


                if (!_tracker.isCreating(object)) {
                    if (_tracker.isCreated(object)) {
                        // Object has been created in this transaction,
                        // it no longer exists, forget about it in the engine.
                        engine.forgetObject(this, oid);
                    } else {
                        // Object has been queried (possibly) deleted in this
                        // transaction and release the lock.
                        engine.releaseLock(this, oid);
                    }
                }


                if (_callback != null) {
                    _callback.releasing(object, false);
                } else if (molder.getCallback() != null) {
                    molder.getCallback().releasing(object, false);
                }
            }
        } catch (Exception except) {
            // Don't thow exceptions during a rollback. Just report them.
            LOG.error("Caught exception at rollback of object with OID " + oid, except);

View Full Code Here

            LazyCGLIB cgObject = (LazyCGLIB) object;
            
            // TODO [WG] We still might have an option for some serious optimization
            // here if the instance has not been materialized yet.
            Identity identity = cgObject.interceptedIdentity();
            ClassMolder molder = cgObject.interceptedClassMolder();
            LockEngine engine = molder.getLockEngine();
            
            // Get the OID we're looking for.
            OID oid = new OID(molder, identity);
            
            // Retrieve the object for this OID; returns null if there ain't such object

View Full Code Here

            Map.Entry entry2 = (Map.Entry) object2;
            
            long oper1 = ((Long) entry1.getValue()).longValue();
            long oper2 = ((Long) entry2.getValue()).longValue();
            
            ClassMolder molder1 = _tracker.getMolderForObject(entry1.getKey());
            ClassMolder molder2 = _tracker.getMolderForObject(entry2.getKey());
            
            if (molder1 == null || molder2 == null) {
                if (oper1 > oper2) {
                    return 1;
                } else if (oper1 < oper2) {
                    return -1;
                } else {
                    return 0;
                }
            }
            
            int pri1 = molder1.getPriority();
            int pri2 = molder2.getPriority();
            
            if (pri1 == pri2) {
                if (oper1 > oper2) {
                    return 1;
                }

View Full Code Here


            if ( value != null ) {
                Class valueClass = value.getClass();


                if ( paramClass.isAssignableFrom( valueClass ) ) {
                    ClassMolder molder = _dbImpl.getLockEngine().getClassMolder( valueClass );


                    if ( molder != null ) {
                        value = molder.getActualIdentity( _dbImpl.getClassLoader(), value );
                    }
                } else if ( info.isUserDefined() ) {
                        //If the user specified a type they must pass that exact type.


                        throw new IllegalArgumentException( "Query paramter " +

View Full Code Here

     * @param type The type to expire.
     * @param identity An array of object identifiers to expire.
     */
    public void expireCache(Class type, Object[] identity) throws PersistenceException {
        testForOpenDatabase();
        ClassMolder molder = lockEngine.getClassMolder(type);
        db.begin();
        for (int i = 0; i < identity.length; i++) {
            transactionContext.expireCache(lockEngine, molder, identity[i]);
        }
        db.commit();

View Full Code Here


            if ( value != null ) {
                Class valueClass = value.getClass();


                if ( paramClass.isAssignableFrom( valueClass ) ) {
                    ClassMolder molder = _dbImpl.getLockEngine().getClassMolder( valueClass );


                    if ( molder != null ) {
                        value = molder.getActualIdentity( _dbImpl.getClassLoader(), value );
                    }
                } else if ( info.isUserDefined() ) {
                        //If the user specified a type they must pass that exact type.


                        throw new IllegalArgumentException( "Query paramter " +

View Full Code Here

0 1 2 3 4

TOP

Related Classes of org.exolab.castor.persist.ClassMolder

org.castor.jdo.util.JDOUtils

org.castor.persist.AbstractTransactionContext

org.castor.persist.ObjectTracker

org.castor.persist.ObjectTracker$ObjectMolderPriorityComparator

org.castor.persist.ProposedEntity

org.castor.persist.resolver.ManyRelationResolver

org.castor.persist.resolver.ManyToManyRelationResolver

org.castor.persist.resolver.OneToManyRelationResolver

org.castor.persist.resolver.PersistanceCapableRelationResolver

org.castor.persist.UpdateAndRemovedFlags

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.