Examples of org.eclipse.persistence.internal.descriptors.ObjectBuilder

Package org.eclipse.persistence.internal.descriptors

Examples of org.eclipse.persistence.internal.descriptors.ObjectBuilder

org.eclipse.persistence.internal.descriptors.ObjectBuilder

Purpose: Object builder is one of the behavior class attached to descriptor. It is responsible for building objects, rows, and extracting primary keys from the object and the rows. @author Sati @since TOPLink/Java 1.0

     * INTERNAL:
     * Create an instance of the Key object from the key information extracted from the map.  
     * This key object may be a shallow stub of the actual object if the key is an Entity type.
     */
    public Object createStubbedMapComponentFromSerializableKeyInfo(Object keyInfo, AbstractSession session) {
        ObjectBuilder builder = this.referenceDescriptor.getObjectBuilder();
        ObjectBuildingQuery clonedQuery = (ObjectBuildingQuery) getSelectionQuery().clone();
        clonedQuery.setSession(session);
        Object newObject = referenceDescriptor.getInstantiationPolicy().buildNewInstance();
        builder.buildPrimaryKeyAttributesIntoObject(newObject, builder.buildRowFromPrimaryKeyValues(keyInfo, session), clonedQuery, session);
        return newObject;
    }

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    /**
     * INTERNAL:
     * Extract the key value from the reference object.
     */
    protected Object extractKeyFromReferenceObject(Object object, AbstractSession session) {
        ObjectBuilder objectBuilder = getReferenceDescriptor().getObjectBuilder();
        Object[] key;
        if (this.mechanism == null) {
            key = new Object[getSourceToTargetKeyFields().size()];
            int index = 0;
            for (DatabaseField field : getSourceToTargetKeyFields().values()) {
                if (object == null) {
                    key[index] = null;
                } else {
                    key[index] = objectBuilder.extractValueFromObjectForField(object, field, session);
                }
                index++;
            }
        } else {
            int size = this.mechanism.targetKeyFields.size();
            key = new Object[size];
            for (int i = 0; i < size; i++) {
                if (object == null) {
                    key[i] = null;
                } else {
                    DatabaseField field = this.mechanism.targetKeyFields.get(i);
                    key[i] = objectBuilder.extractValueFromObjectForField(object, field, session);
                }
            }            
        }


        return new CacheId(key);

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     */
    @Override
    protected void executeBatchQuery(DatabaseQuery query, CacheKey parentCacheKey, Map referenceObjectsByKey, AbstractSession session, AbstractRecord translationRow) {
        // Execute query and index resulting objects by key.
        List results;
        ObjectBuilder builder = query.getDescriptor().getObjectBuilder();
        if (this.mechanism == null) {
            results = (List)session.executeQuery(query, translationRow);
            for (Object eachReferenceObject : results) {
                Object eachReferenceKey = extractKeyFromReferenceObject(eachReferenceObject, session);    
                referenceObjectsByKey.put(eachReferenceKey, builder.wrapObject(eachReferenceObject, session));
            }
        } else {
            ComplexQueryResult complexResult = (ComplexQueryResult)session.executeQuery(query, translationRow);
            results = (List)complexResult.getResult();
            List<AbstractRecord> rows = (List)complexResult.getData();
            int size = results.size();
            for (int index = 0; index < size; index++) {
                AbstractRecord row = rows.get(index);
                Object key = this.mechanism.extractKeyFromTargetRow(row, session);
                referenceObjectsByKey.put(key, builder.wrapObject(results.get(index), session));
            }
        }
    }

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    @Override
    protected Object valueFromRowInternalWithJoin(AbstractRecord row, JoinedAttributeManager joinManager, ObjectBuildingQuery sourceQuery, CacheKey parentCacheKey, AbstractSession executionSession, boolean isTargetProtected) throws DatabaseException {


        ContainerPolicy policy = getContainerPolicy();
        Object value = policy.containerInstance();
        ObjectBuilder objectBuilder = getDescriptor().getObjectBuilder();
        // Extract the primary key of the source object, to filter only the joined rows for that object.
        Object sourceKey = objectBuilder.extractPrimaryKeyFromRow(row, executionSession);
        // If the query was using joining, all of the result rows by primary key will have been computed.
        List<AbstractRecord> rows = joinManager.getDataResultsByPrimaryKey().get(sourceKey);
        // If no 1-m rows were fetch joined, then get the value normally,
        // this can occur with pagination where the last row may not be complete.
        if (rows == null) {

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    /**
     * INTERNAL:
     * Cascade discover and persist new objects during commit to the map key
     */
    public void cascadeDiscoverAndPersistUnregisteredNewObjects(Object object, Map newObjects, Map unregisteredExistingObjects, Map visitedObjects, UnitOfWorkImpl uow, boolean getAttributeValueFromObject, Set cascadeErrors){
        ObjectBuilder builder = getReferenceDescriptor(object.getClass(), uow).getObjectBuilder();
        builder.cascadeDiscoverAndPersistUnregisteredNewObjects(object, newObjects, unregisteredExistingObjects, visitedObjects, uow, cascadeErrors);
    }

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        if ((objectReferenced == null)) {
            return;
        }
        if (!visitedObjects.containsKey(objectReferenced)) {
            visitedObjects.put(objectReferenced, objectReferenced);
            ObjectBuilder builder = getReferenceDescriptor(objectReferenced.getClass(), uow).getObjectBuilder();
            builder.cascadePerformRemove(objectReferenced, uow, visitedObjects);
        }
    }

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        if (attributeValue == null) {
            return;
        }
        if (!visitedObjects.containsKey(attributeValue)) {
            visitedObjects.put(attributeValue, attributeValue);
            ObjectBuilder builder = getReferenceDescriptor(attributeValue, uow).getObjectBuilder();
            // cascade perform remove any related objects via ObjectBuilder for an aggregate object
            builder.cascadePerformRemovePrivateOwnedObjectFromChangeSet(attributeValue, uow, visitedObjects);
        }
    }

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        if ((objectReferenced == null)) {
            return;
        }
        if (!visitedObjects.containsKey(objectReferenced)) {
            visitedObjects.put(objectReferenced, objectReferenced);
            ObjectBuilder builder = getReferenceDescriptor(objectReferenced.getClass(), uow).getObjectBuilder();
            builder.cascadeRegisterNewForCreate(objectReferenced, uow, visitedObjects);
        }
    }

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     * join columns to handle some cases properly.
     */
    public void addPrimaryKeyJoinField(DatabaseField primaryKeyField, DatabaseField secondaryField) {
        // now it doesn't need to manage this as a separate table here,
        // it's enough just to add the mapping to ObjectBuilder.mappingsByField 
        ObjectBuilder builder = getReferenceDescriptor().getObjectBuilder();
        DatabaseMapping mapping = builder.getMappingForField(primaryKeyField);
        if (mapping != null) {
            builder.getMappingsByField().put(secondaryField, mapping); 
        }
    }

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        DatabaseAccessor accessor = (DatabaseAccessor)((List<Accessor>)this.accessors).get(0);
        boolean exceptionOccured = false;
        try {
            ResultSetMetaData metaData = resultSet.getMetaData();
            List results = new ArrayList();
            ObjectBuilder builder = this.descriptor.getObjectBuilder();
            while (resultSet.next()) {
                results.add(builder.buildObjectFromResultSet(this, this.joinedAttributeManager, resultSet, session, accessor, metaData, platform));
            }
            return results;
        } catch (SQLException exception) {
            exceptionOccured = true;
            DatabaseException commException = accessor.processExceptionForCommError(session, exception, call);

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Related Classes of org.eclipse.persistence.internal.descriptors.ObjectBuilder

org.eclipse.persistence.annotations.CacheKeyType

org.eclipse.persistence.annotations.IdValidation

org.eclipse.persistence.descriptors.CachePolicy

org.eclipse.persistence.descriptors.changetracking.ObjectChangePolicy

org.eclipse.persistence.descriptors.changetracking.ObjectChangeTrackingPolicy

org.eclipse.persistence.descriptors.ClassDescriptor

org.eclipse.persistence.descriptors.CMPPolicy

org.eclipse.persistence.descriptors.copying.CloneCopyPolicy

org.eclipse.persistence.descriptors.DescriptorEvent

org.eclipse.persistence.descriptors.DescriptorEventManager

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