Examples of org.eclipse.persistence.mappings.AggregateObjectMapping

Package org.eclipse.persistence.mappings

Examples of org.eclipse.persistence.mappings.AggregateObjectMapping

org.eclipse.persistence.mappings.AggregateObjectMapping

Purpose:Two objects can be considered to be related by aggregation if there is a strict 1:1 relationship between the objects. This means that the target (child or owned) object cannot exist without the source (parent) object. In TopLink, it also means the data for the owned object is stored in the same table as the parent. @author Sati @since TOPLink/Java 1.0

     *            are null.
     * @return the new mapping configured and initialized (if the descriptor has
     *         been initialized).
     */
    public AggregateObjectMapping addAggregateObjectMapping(String name, DynamicType refType, boolean allowsNull) {
        AggregateObjectMapping mapping = new AggregateObjectMapping();
        mapping.setAttributeName(name);
        mapping.setReferenceClass(refType.getJavaClass());
        mapping.setIsNullAllowed(allowsNull);


        return (AggregateObjectMapping) addMapping(mapping);
    }

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    /**
     * INTERNAL:
     */
    protected AggregateObjectMapping processEmbeddableMapKeyClass(MappedKeyMapAccessor mappedKeyMapAccessor) {
        AggregateObjectMapping keyMapping = new AggregateObjectMapping();
        MetadataClass mapKeyClass = mappedKeyMapAccessor.getMapKeyClass();
        keyMapping.setReferenceClassName(mapKeyClass.getName());
        
        // The embeddable accessor must be processed by now. If it is not then
        // we are in trouble since by the time we get here, we are too late in
        // the cycle to process embeddable classes and their accessors. See
        // MetadataProject processStage3(), processEmbeddableMappingAccessors. 
        // At this stage all class accessors (embeddable, entity and mapped 
        // superclass) have to have been processed to gather all their 
        // relational and embedded mappings. 
        EmbeddableAccessor mapKeyAccessor = getProject().getEmbeddableAccessor(mapKeyClass);
        
        // Ensure the reference descriptor is marked as an embeddable collection.
        mapKeyAccessor.getDescriptor().setIsEmbeddableCollection();
        
        // Process the attribute overrides for this may key embeddable.
        processAttributeOverrides(mappedKeyMapAccessor.getMapKeyAttributeOverrides(), keyMapping, mapKeyAccessor.getDescriptor());
        
        // Process the association overrides for this may key embeddable.
        processAssociationOverrides(mappedKeyMapAccessor.getMapKeyAssociationOverrides(), keyMapping, mapKeyAccessor.getDescriptor());
        
        keyMapping.setDescriptor(getDescriptor().getClassDescriptor());
        
        return keyMapping;
    }

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     * It assumes the aggregate object mapping is available and fully processed.
     * This will method will check for an attribute override field that was
     * used, otherwise returns the field name provided.
     */
    public DatabaseField getField(String fieldName) {
        AggregateObjectMapping mapping = (AggregateObjectMapping) getMapping();
        
        if (mapping.getAggregateToSourceFieldNames().containsKey(fieldName)) {
            return new DatabaseField(mapping.getAggregateToSourceFieldNames().get(fieldName));
        } else {
            return new DatabaseField(fieldName);
        }
    }

View Full Code Here

     * INTERNAL:
     * Process an embedded.
     */    
    public void process() {
        // Build and aggregate object mapping and add it to the descriptor.
        AggregateObjectMapping mapping = new AggregateObjectMapping();
        setMapping(mapping);
        
        mapping.setIsReadOnly(false);
        mapping.setIsNullAllowed(true);
        mapping.setReferenceClassName(getReferenceClassName());
        mapping.setAttributeName(getAttributeName());    
        
        // Will check for PROPERTY access
        setAccessorMethods(mapping);
        
        // Process attribute overrides.

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    /**
     * INTERNAL:
     */
    protected AggregateObjectMapping processEmbeddableMapKeyClass(MappedKeyMapAccessor mappedKeyMapAccessor) {
        AggregateObjectMapping keyMapping = new AggregateObjectMapping();
        MetadataClass mapKeyClass = mappedKeyMapAccessor.getMapKeyClass();
        keyMapping.setReferenceClassName(mapKeyClass.getName());
        
        // The embeddable accessor must be processed by now. If it is not then
        // we are in trouble since by the time we get here, we are too late in
        // the cycle to process embeddable classes and their accessors. See
        // MetadataProject processStage3(), processEmbeddableMappingAccessors. 
        // At this stage all class accessors (embeddable, entity and mapped 
        // superclass) have to have been processed to gather all their 
        // relational and embedded mappings. 
        EmbeddableAccessor mapKeyAccessor = getProject().getEmbeddableAccessor(mapKeyClass);
        
        // Ensure the reference descriptor is marked as an embeddable collection.
        mapKeyAccessor.getDescriptor().setIsEmbeddableCollection();
        
        // Process the attribute overrides for this may key embeddable.
        processAttributeOverrides(mappedKeyMapAccessor.getMapKeyAttributeOverrides(), keyMapping, mapKeyAccessor.getDescriptor());
        
        // Process the association overrides for this may key embeddable.
        processAssociationOverrides(mappedKeyMapAccessor.getMapKeyAssociationOverrides(), keyMapping, mapKeyAccessor.getDescriptor());
        
        keyMapping.setDescriptor(getDescriptor().getClassDescriptor());
        
        return keyMapping;
    }

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        aggregateToSourceFieldNameAssociationsMapping.setAttributeAccessor(new AttributeAccessor() {
            public Object getAttributeValueFromObject(Object object) {
                /*bug 322233: AttributeOverrides and AssociationOverride  
                 * changed getAggregateToSourceFieldAssociations to hold String->DatabaseField associations
                 */
                AggregateObjectMapping mapping = (AggregateObjectMapping)object;
                Vector associations = mapping.getAggregateToSourceFieldAssociations();
                Vector translations = new Vector(associations.size());
                for (int index = 0; index < associations.size(); index++) {
                    Association association = (Association)associations.get(index);
                    FieldTranslation translation = new FieldTranslation();
                    translation.setKey(new DatabaseField((String)association.getKey()));
                    translation.setValue(association.getValue());
                    translations.add(translation);
                }
                return translations;
            }


            public void setAttributeValueInObject(Object object, Object value) {
                AggregateObjectMapping mapping = (AggregateObjectMapping)object;
                Vector associations = (Vector)value;
                for (int index = 0; index < associations.size(); index++) {
                    Association association = (Association)associations.get(index);
                    association.setKey(((DatabaseField)association.getKey()).getQualifiedName());
                }


                mapping.setAggregateToSourceFieldAssociations(associations);
            }
        });
        aggregateToSourceFieldNameAssociationsMapping.setAttributeName("aggregateToSourceFieldNameAssociationsMapping");
        aggregateToSourceFieldNameAssociationsMapping.setXPath(getPrimaryNamespaceXPath() + "field-translations/" + getPrimaryNamespaceXPath() + "field-translation");
        descriptor.addMapping(aggregateToSourceFieldNameAssociationsMapping);

View Full Code Here

     *            are null.
     * @return the new mapping configured and initialized (if the descriptor has
     *         been initialized).
     */
    public AggregateObjectMapping addAggregateObjectMapping(String name, DynamicType refType, boolean allowsNull) {
        AggregateObjectMapping mapping = new AggregateObjectMapping();
        mapping.setAttributeName(name);
        mapping.setReferenceClass(refType.getJavaClass());
        mapping.setIsNullAllowed(allowsNull);


        return (AggregateObjectMapping) addMapping(mapping);
    }

View Full Code Here

        aggregateToSourceFieldNameAssociationsMapping.setAttributeAccessor(new AttributeAccessor() {
            public Object getAttributeValueFromObject(Object object) {
                /*bug 322233: AttributeOverrides and AssociationOverride  
                 * changed getAggregateToSourceFieldAssociations to hold String->DatabaseField associations
                 */
                AggregateObjectMapping mapping = (AggregateObjectMapping)object;
                Vector associations = mapping.getAggregateToSourceFieldAssociations();
                Vector translations = new Vector(associations.size());
                for (int index = 0; index < associations.size(); index++) {
                    Association association = (Association)associations.get(index);
                    FieldTranslation translation = new FieldTranslation();
                    translation.setKey(new DatabaseField((String)association.getKey()));
                    translation.setValue(association.getValue());
                    translations.add(translation);
                }
                return translations;
            }


            public void setAttributeValueInObject(Object object, Object value) {
                AggregateObjectMapping mapping = (AggregateObjectMapping)object;
                Vector associations = (Vector)value;
                for (int index = 0; index < associations.size(); index++) {
                    Association association = (Association)associations.get(index);
                    association.setKey(((DatabaseField)association.getKey()).getQualifiedName());
                }

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    /**
     * INTERNAL:
     */
    protected AggregateObjectMapping processEmbeddableMapKeyClass(MappedKeyMapAccessor mappedKeyMapAccessor) {
        AggregateObjectMapping keyMapping = new AggregateObjectMapping();
        MetadataClass mapKeyClass = mappedKeyMapAccessor.getMapKeyClass();
        keyMapping.setReferenceClassName(mapKeyClass.getName());
        
        // The embeddable accessor must be processed by now. If it is not then
        // we are in trouble since by the time we get here, we are too late in
        // the cycle to process embeddable classes and their accessors. See
        // MetadataProject processStage3(), processEmbeddableMappingAccessors. 
        // At this stage all class accessors (embeddable, entity and mapped 
        // superclass) have to have been processed to gather all their 
        // relational and embedded mappings. 
        EmbeddableAccessor mapKeyAccessor = getProject().getEmbeddableAccessor(mapKeyClass);
        
        // Ensure the reference descriptor is marked as an embeddable collection.
        mapKeyAccessor.getDescriptor().setIsEmbeddableCollection();
        
        // Process the attribute overrides for this may key embeddable.
        processAttributeOverrides(mappedKeyMapAccessor.getMapKeyAttributeOverrides(), keyMapping, mapKeyAccessor.getDescriptor());
        
        // Process the association overrides for this may key embeddable.
        processAssociationOverrides(mappedKeyMapAccessor.getMapKeyAssociationOverrides(), keyMapping, mapKeyAccessor.getDescriptor());
        
        keyMapping.setDescriptor(getDescriptor().getClassDescriptor());
        
        return keyMapping;
    }

View Full Code Here

     * It assumes the aggregate object mapping is available and fully processed.
     * This will method will check for an attribute override field that was
     * used, otherwise returns the field name provided.
     */
    public DatabaseField getField(String fieldName) {
        AggregateObjectMapping mapping = (AggregateObjectMapping) getMapping();
        
        if (mapping.getAggregateToSourceFieldNames().containsKey(fieldName)) {
            return new DatabaseField(mapping.getAggregateToSourceFieldNames().get(fieldName));
        } else {
            return new DatabaseField(fieldName);
        }
    }

View Full Code Here

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