Examples of oracle.toplink.essentials.descriptors.ClassDescriptor

Package oracle.toplink.essentials.descriptors

Examples of oracle.toplink.essentials.descriptors.ClassDescriptor

oracle.toplink.essentials.descriptors.ClassDescriptor

Purpose: Abstract descriptor class for defining persistence information on a class. This class provides the data independent behavior and is subclassed, for relational, object-relational, EIS, XML, etc. @see RelationalDescriptor @see oracle.toplink.essentials.objectrelational.ObjectRelationalDescriptor @see oracle.toplink.essentials.eis.EISDescriptor @see oracle.toplink.essentials.ox.XMLDescriptor


    /**
     * resolveMapping: Answer the mapping which corresponds to my variableName.
     */
    public DatabaseMapping resolveMapping(GenerationContext context, Class ownerClass) {
        ClassDescriptor descriptor = context.getSession().getDescriptor(ownerClass);
        return (descriptor==null) ? null : descriptor.getMappingForAttributeName(getAttributeName());
    }

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        // to the query rather than me
        if ((mapping == null) || (mapping.isDirectToFieldMapping())) {
            return ownerClass;
        }


        ClassDescriptor descriptor = mapping.getReferenceDescriptor();
        return (descriptor==null) ? null : descriptor.getJavaClass();
        //return mapping.getReferenceDescriptor().getJavaClass();
    }

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                    record.setAttribute(mapping.getAttributeName());
                    record.setMapping(mapping);
                    objectChangeSet.addChange(record);
                }
                ObjectChangeSet aggregateChangeSet = (oracle.toplink.essentials.internal.sessions.ObjectChangeSet)record.getChangedObject();
                ClassDescriptor aggregateDescriptor = ((AggregateObjectMapping)mapping).getReferenceDescriptor();
                if (aggregateChangeSet == null) {
                    aggregateChangeSet = aggregateDescriptor.getObjectBuilder().createObjectChangeSet(aggregate, (oracle.toplink.essentials.internal.sessions.UnitOfWorkChangeSet)((UnitOfWorkImpl)getSession()).getUnitOfWorkChangeSet(), getSession());
                    record.setChangedObject(aggregateChangeSet);
                }
                updateChangeSet(aggregateDescriptor, aggregateChangeSet, field, aggregate, handledMappings);
            } else {
                if (record != null) {

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                        if (objectClass == null) {
                            objectClass = objectChangeSet.getClassType(session);
                        }
                        // It would be so much nicer if the change set was keyed by the class instead of class name,
                        // so this could be done once.  We should key on class, and only convert to keying on name when broadcasting changes.
                        ClassDescriptor descriptor = session.getDescriptor(objectClass);
                        CacheKey activeCacheKey = attemptToAcquireLock(objectClass, objectChangeSet.getCacheKey(), session);
                        if (activeCacheKey == null) {
                            //if cacheKey is null then the lock was not available
                            //no need to synchronize this block,because if the check fails then this thread
                            //will just return to the queue until it gets woken up.

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     */
    protected CacheKey checkAndLockObject(Object objectToLock, Map lockedObjects, DatabaseMapping mapping, AbstractSession session) {
        //the cachekey should always reference an object otherwise what would we be cloning.
        if ((objectToLock != null) && !lockedObjects.containsKey(objectToLock)) {
            Vector primaryKeysToLock = null;
            ClassDescriptor referenceDescriptor = null;
            if (mapping.getReferenceDescriptor().hasInheritance()) {
                referenceDescriptor = session.getDescriptor(objectToLock);
            } else {
                referenceDescriptor = mapping.getReferenceDescriptor();
            }
            // Need to traverse aggregates, but not lock aggregates directly.
            if (referenceDescriptor.isAggregateDescriptor() || referenceDescriptor.isAggregateCollectionDescriptor()) {
                traverseRelatedLocks(objectToLock, lockedObjects, referenceDescriptor, session);
            } else {
                primaryKeysToLock = referenceDescriptor.getObjectBuilder().extractPrimaryKeyFromObject(objectToLock, session);
                CacheKey toWaitOn = acquireLockAndRelatedLocks(objectToLock, lockedObjects, primaryKeysToLock, referenceDescriptor, session);
                if (toWaitOn != null) {
                    return toWaitOn;
                }
            }

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    protected void initializeReferenceDescriptor(AbstractSession session) throws DescriptorException {
        if (getReferenceClass() == null) {
            throw DescriptorException.referenceClassNotSpecified(this);
        }


        ClassDescriptor refDescriptor = session.getDescriptor(getReferenceClass());


        if (refDescriptor == null) {
            throw DescriptorException.descriptorIsMissing(getReferenceClass().getName(), this);
        }


        if (refDescriptor.isAggregateDescriptor() && (!isAggregateCollectionMapping())) {
            throw DescriptorException.referenceDescriptorCannotBeAggregate(this);
        }


        // can not be isolated if it is null.  Seems that only aggregates do not set
        // the owning descriptor on the mapping.
        if ((!((this.getDescriptor() != null) && this.getDescriptor().isIsolated())) && refDescriptor.isIsolated()) {
            throw DescriptorException.isolateDescriptorReferencedBySharedDescriptor(refDescriptor.getJavaClassName(), this.getDescriptor().getJavaClassName(), this);
        }


        setReferenceDescriptor(refDescriptor);
    }

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            // do @Entity's next
            for (Iterator i = entityClasses.iterator(); i.hasNext();) {
                Class clz = (Class)i.next();
                
                // check to ensure that class is present in project
                ClassDescriptor descriptor = findDescriptor(session.getProject(), clz.getName());
                if (descriptor == null) {


                    log(SessionLog.FINER, WEAVER_CLASS_NOT_IN_PROJECT,
                        new Object[]{clz.getName()});
                } else {
                    log(SessionLog.FINER, WEAVER_PROCESSING_CLASS,
                        new Object[]{clz.getName()});


                    boolean weaveValueHolders = canWeaveValueHolders(clz, descriptor.getMappings());
                    
                    if (weaveValueHolders) {
                        ClassDetails classDetails = createClassDetails(clz, weaveValueHolders);                       
                        List unMappedAttributes = storeAttributeMappings(clz, classDetails, descriptor.getMappings(), weaveValueHolders);
                        classDetailsMap.put(classDetails.getClassName() ,classDetails);


                        if (!unMappedAttributes.isEmpty()){
                            addClassDetailsForMappedSuperClasses(clz, descriptor, classDetails, classDetailsMap, unMappedAttributes);
                        }

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     * This avoids having to construct a project by class facilitating weaving
     */
    protected ClassDescriptor findDescriptor(Project project, String className){
        Iterator iterator = project.getOrderedDescriptors().iterator();
        while (iterator.hasNext()){
            ClassDescriptor descriptor = (ClassDescriptor)iterator.next();
            if (descriptor.getJavaClassName().equals(className)){
                return descriptor;
            }
        }
        return null;
    }

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            ObjectExpression objectExpression = (ObjectExpression)joinedExpressions.get(index);


            // Expression may not have been initialized.
            objectExpression.getBuilder().setSession(getSession().getRootSession(null));
            objectExpression.getBuilder().setQueryClass(getReferenceClass());
            ClassDescriptor descriptor = objectExpression.getMapping().getReferenceDescriptor();
            fields.addAll(descriptor.getFields());
        }
    }

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        if (getReferenceClass() == null) {
            throw QueryException.referenceClassMissing(this);
        }


        if (getDescriptor() == null) {
            ClassDescriptor referenceDescriptor = session.getDescriptor(getReferenceClass());
            if (referenceDescriptor == null) {
                throw QueryException.descriptorIsMissing(getReferenceClass(), this);
            }
            setDescriptor(referenceDescriptor);
        }

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oracle.toplink.essentials.descriptors.InheritancePolicy

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oracle.toplink.essentials.internal.descriptors.ObjectBuilder

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