Package oracle.toplink.essentials.descriptors

Examples of oracle.toplink.essentials.descriptors.ClassDescriptor

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        }

        QueryKeyExpression qkExpression = (QueryKeyExpression)expression;
        Expression baseExpression = qkExpression.getBaseExpression();

        ClassDescriptor descriptor = getLeafDescriptorFor(baseExpression, rootDescriptor);
        return descriptor.getMappingForAttributeName(qkExpression.getName());
    }
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                return getSession().getDescriptor(queryClass);
            }
            return rootDescriptor;
        }
        Expression baseExpression = ((QueryKeyExpression)expression).getBaseExpression();
        ClassDescriptor baseDescriptor = getLeafDescriptorFor(baseExpression, rootDescriptor);
        ClassDescriptor descriptor = null;
        String attributeName = expression.getName();

        DatabaseMapping mapping = baseDescriptor.getMappingForAttributeName(attributeName);

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

        if (getDescriptor() == null) {
            ClassDescriptor referenceDescriptor;
            //Bug#3947714  In case getSelectionObject() is proxy           
            if (getSelectionObject() != null && session.getProject().hasProxyIndirection()) {
                referenceDescriptor = session.getDescriptor(getSelectionObject());           
            } else {
                referenceDescriptor = session.getDescriptor(getReferenceClass());               
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        if (getReferenceClass() == null) {
            throw QueryException.referenceClassMissing(this);
        }

        if (getDescriptor() == null) {
            ClassDescriptor referenceDescriptor = getSession().getDescriptor(getReferenceClass());
            if (referenceDescriptor == null) {
                throw QueryException.descriptorIsMissing(getReferenceClass(), this);
            }
            setDescriptor(referenceDescriptor);
        }
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     * Add the Deleted object to the changeSet
     * @param objectChanges prototype.changeset.ObjectChanges
     */
    public void addDeletedObject(Object object, AbstractSession session) {
        //CR 4080 - must prevent aggregate objects added to DeletedObjects list
        ClassDescriptor descriptor = session.getDescriptor(object);
        if (!descriptor.isAggregateCollectionDescriptor()) {
            ObjectChangeSet set = descriptor.getObjectBuilder().createObjectChangeSet(object, this, false, session);

            // needed for xml change set
            set.setShouldBeDeleted(true);
            getDeletedObjects().put(set, set);
        }
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     * This allows for the order of the classes to be processed optimally.
     */
    protected void commitNewObjectsForClassWithChangeSet(UnitOfWorkChangeSet uowChangeSet, Class theClass) {
        IdentityHashtable newObjectChangesList = (IdentityHashtable)uowChangeSet.getNewObjectChangeSets().get(theClass);
        if (newObjectChangesList != null) {// may be no changes for that class type.       
            ClassDescriptor descriptor = getSession().getDescriptor(theClass);
            for (Enumeration pendingEnum = newObjectChangesList.elements();
                     pendingEnum.hasMoreElements();) {
                ObjectChangeSet changeSetToWrite = (ObjectChangeSet)pendingEnum.nextElement();
                Object objectToWrite = changeSetToWrite.getUnitOfWorkClone();
                if ((!getProcessedCommits().containsKey(changeSetToWrite)) && (!getProcessedCommits().containsKey(objectToWrite))) {
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     * This allows for the order of the classes to be processed optimally.
     */
    protected void commitChangedObjectsForClassWithChangeSet(UnitOfWorkChangeSet uowChangeSet, String className) {
        Hashtable objectChangesList = (Hashtable)uowChangeSet.getObjectChanges().get(className);
        if (objectChangesList != null) {// may be no changes for that class type.       
            ClassDescriptor descriptor = null;
            for (Enumeration pendingEnum = objectChangesList.elements();
                     pendingEnum.hasMoreElements();) {
                ObjectChangeSet changeSetToWrite = (ObjectChangeSet)pendingEnum.nextElement();
                if (descriptor == null) {
                    // Need a class to get descriptor, for some evil reason the keys are class name.
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    /**
     * ADVANCED:
     * Return if their is an object for the primary key.
     */
    public boolean containsObjectInIdentityMap(Vector primaryKey, Class theClass) {
        ClassDescriptor descriptor = getSession().getDescriptor(theClass);
        return containsObjectInIdentityMap(primaryKey, theClass, descriptor);
    }
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    /**
     * INTERNAL:
     * Get the identity map for the given class from the IdentityMapManager
     */
    public IdentityMap getIdentityMap(Class theClass) {
        ClassDescriptor descriptor = getSession().getDescriptor(theClass);
        if (descriptor == null) {
            throw ValidationException.missingDescriptor(theClass.toString());
        }
        return this.getIdentityMap(descriptor);
    }
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     * TopLink's cache invalidation feature and returns the difference between the next expiry
     * time of the object and its read time.  The method will return 0 for invalidated objects.
     */
    public long getRemainingValidTime(Object object) {
        Vector primaryKey = getSession().keyFromObject(object);
        ClassDescriptor descriptor = getSession().getDescriptor(object);
        CacheKey key = getCacheKeyForObject(primaryKey, object.getClass(), descriptor);
        if (key == null) {
            throw QueryException.objectDoesNotExistInCache(object);
        }
        return descriptor.getCacheInvalidationPolicy().getRemainingValidTime(key);
    }
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Related Classes of oracle.toplink.essentials.descriptors.ClassDescriptor

  • oracle.toplink.essentials.descriptors.InheritancePolicy
  • oracle.toplink.essentials.internal.databaseaccess.DatabasePlatform
  • oracle.toplink.essentials.internal.descriptors.DescriptorIterator
  • oracle.toplink.essentials.internal.descriptors.ObjectBuilder
  • oracle.toplink.essentials.internal.ejb.cmp3.base.EntityManagerImpl
  • oracle.toplink.essentials.internal.ejb.cmp3.EntityManagerSetupImpl
  • oracle.toplink.essentials.internal.ejb.cmp3.metadata.accessors.ClassAccessor
  • oracle.toplink.essentials.internal.ejb.cmp3.metadata.MetadataProject
  • oracle.toplink.essentials.internal.expressions.DataExpression
  • oracle.toplink.essentials.internal.expressions.ParameterExpression
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