Examples of org.eclipse.persistence.descriptors.ClassDescriptor

Package org.eclipse.persistence.descriptors

Examples of org.eclipse.persistence.descriptors.ClassDescriptor

org.eclipse.persistence.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 org.eclipse.persistence.mappings.structures.ObjectRelationalDataTypeDescriptor @see org.eclipse.persistence.eis.EISDescriptor @see org.eclipse.persistence.oxm.XMLDescriptor

        Vector statements = org.eclipse.persistence.internal.helper.NonSynchronizedVector.newInstance();
        
        // retrieve rootTable and its primary key fields for composing temporary table
        DatabaseTable rootTable = getDescriptor().getMultipleTableInsertOrder().firstElement();
        Collection rootTablePrimaryKeyFields = getPrimaryKeyFieldsForTable(rootTable);
        ClassDescriptor rootDescriptor = getDescriptor();
        if(getDescriptor().hasInheritance()) {
            rootDescriptor = rootDescriptor.getInheritancePolicy().getRootParentDescriptor();
        }
        Vector allFields = org.eclipse.persistence.internal.helper.NonSynchronizedVector.newInstance();
        Iterator it = rootDescriptor.getFields().iterator();
        while(it.hasNext()) {
            DatabaseField field = (DatabaseField)it.next();
            if(rootTable.equals(field.getTable())) {
                allFields.add(field);
            }

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                tablesToIgnoreForChildren.addAll(tablesInInsertOrder);
            }
            
            Iterator it = descriptor.getInheritancePolicy().getChildDescriptors().iterator();
            while(it.hasNext()) {
                ClassDescriptor childDescriptor = (ClassDescriptor)it.next();
                
                // Need to process only "multiple tables" child descriptors
                if ((childDescriptor.getTables().size() > descriptor.getTables().size()) || 
                    (childDescriptor.getInheritancePolicy().hasMultipleTableChild())) 
                {
                    //recursively build for child desciptors
                    Vector childStatements = buildDeleteAllStatementsForTempTable(childDescriptor, rootTable, rootTablePrimaryKeyFields, tablesToIgnoreForChildren);
                    statements.addAll(childStatements);
                }

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     * Pass to this method a table mapped by query's descriptor.
     * Returns the highest descriptor in inheritance hierarchy that mapps this table.
     */
    protected ClassDescriptor getHighestDescriptorMappingTable(DatabaseTable table) {
        // find the highest descriptor in inheritance hierarchy mapped to the table 
        ClassDescriptor desc = getDescriptor();
        ClassDescriptor parentDescriptor = getDescriptor().getInheritancePolicy().getParentDescriptor();
        while(parentDescriptor != null && parentDescriptor.getTables().contains(table)) {
            desc = parentDescriptor;
            parentDescriptor =  parentDescriptor.getInheritancePolicy().getParentDescriptor();
        }
        return desc;
    }

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                    accessor = new SDOMethodAttributeAccessor(this);
                }
                xmlMapping.setAttributeAccessor(accessor);
            }
            if ((getContainingType() != null) && !getContainingType().isDataType()) {
                ClassDescriptor containingDescriptor = ((SDOType)getContainingType()).getXmlDescriptor();
                xmlMapping.setDescriptor(containingDescriptor);
                XMLMapping mapping = (XMLMapping)((SDOType)getContainingType()).getXmlDescriptor().getMappingForAttributeName(getName());
                if (mapping != null) {
                    ((SDOType)getContainingType()).getXmlDescriptor().getMappings().remove(mapping);
                }

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     */
    @SuppressWarnings("unchecked")
    public static void fixOROXAccessors(Project orProject, Project oxProject) {


        for (Iterator i = orProject.getDescriptors().values().iterator(); i.hasNext();) {
            ClassDescriptor desc = (ClassDescriptor) i.next();
            if (!BaseEntity.class.isAssignableFrom(desc.getJavaClass())) {
                continue;
            }
            ClassDescriptor xdesc = oxProject.getDescriptorForAlias(desc.getAlias());
            int idx = 0;
            for (Iterator j = desc.getMappings().iterator(); j.hasNext();) {
                DatabaseMapping dm = (DatabaseMapping) j.next();
                String attributeName = dm.getAttributeName();
                DatabaseMapping xdm = xdesc.getMappingForAttributeName(attributeName);
                dm.setAttributeAccessor(new BaseEntityAccessor(attributeName, idx));
                if (xdm != null) {
                    if (dm.isForeignReferenceMapping()) {
                        ForeignReferenceMapping frm = (ForeignReferenceMapping)dm;
                        if (frm.usesIndirection() && frm.getIndirectionPolicy().getClass().

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        // For bug 2780817 get the mapping directly from the object.  In EJB 2.0 
        // inheritance, each child must override mappings defined in an abstract 
        // class with its own.
        DatabaseMapping mapping = this.mapping;
        ClassDescriptor descriptor = mapping.getDescriptor();
        if (descriptor.hasInheritance() && (descriptor.getJavaClass() != object.getClass())) {
            mapping = session.getDescriptor(object.getClass()).getObjectBuilder().getMappingForAttributeName(getName());
            descriptor = mapping.getDescriptor();
        }


        //fetch group support
        if (descriptor.hasFetchGroupManager()) {
            FetchGroupManager fetchGroupManager = descriptor.getFetchGroupManager();
            if (fetchGroupManager.isPartialObject(object) && (!fetchGroupManager.isAttributeFetched(object, mapping.getAttributeName()))) {
                //the conforming attribute is not fetched, simply throw exception
                throw QueryException.cannotConformUnfetchedAttribute(mapping.getAttributeName());
            }
        }

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    /**
     * INTERNAL:
     */
    public void addAlias(String alias, MetadataDescriptor descriptor) {
        ClassDescriptor existingDescriptor = m_session.getProject().getDescriptorForAlias(alias);
        
        if (existingDescriptor == null) {
            descriptor.setAlias(alias);
            m_session.getProject().addAlias(alias, descriptor.getClassDescriptor());
        } else {
            throw ValidationException.nonUniqueEntityName(existingDescriptor.getJavaClassName(), descriptor.getJavaClassName(), alias);
        }
    }

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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);
                        // PERF: Do not merge nor lock into the session cache if descriptor set to unit of work isolated.
                        if (descriptor.shouldIsolateObjectsInUnitOfWork()) {
                            break;
                        }
                        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

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     */
    protected CacheKey checkAndLockObject(Object objectToLock, Map lockedObjects, Map refreshedObjects, DatabaseMapping mapping, AbstractSession session, UnitOfWorkImpl unitOfWork) {
        //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() || mapping.getReferenceDescriptor().isDescriptorForInterface()) {
                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, refreshedObjects, referenceDescriptor, session, unitOfWork);
            } else {
                primaryKeysToLock = referenceDescriptor.getObjectBuilder().extractPrimaryKeyFromObject(objectToLock, session);
                CacheKey cacheKey = session.getIdentityMapAccessorInstance().getCacheKeyForObjectForLock(primaryKeysToLock, objectToLock.getClass(), referenceDescriptor);
                if (cacheKey == null) {
                    // Cache key may be null for no-identity map, missing or deleted object, just create a new one to be locked.
                    cacheKey = new CacheKey(primaryKeysToLock);
                    cacheKey.setReadTime(System.currentTimeMillis());

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     * resolveClass: Answer the class which corresponds to my variableName. This is the class for
     * an alias, where the variableName is registered to an alias.
     */
    public Class resolveClass(GenerationContext context) {
        String alias = abstractSchemaName;
        ClassDescriptor descriptor = context.getSession().getDescriptorForAlias(alias);
        if (descriptor == null) {
            throw JPQLException.entityTypeNotFound2(
                context.getParseTreeContext().getQueryInfo(), 
                getLine(), getColumn(), alias);
        }
        Class theClass = descriptor.getJavaClass();
        if (theClass == null) {
            throw JPQLException.resolutionClassNotFoundException2(
                context.getParseTreeContext().getQueryInfo(), 
                getLine(), getColumn(), alias);
        }

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