Examples of org.eclipse.persistence.queries.AttributeGroup

org.eclipse.persistence.queries.AttributeGroup
Purpose: An AttributeGroup represents a set of mappings and nested AttributeGroups for relationship mappings for an entity type. Responsibilities:
- Defines which attributes should be fetched from the database within a {@link FetchGroup}.
- Define which relationship attributes should be populated in a resulting entity graph within a {@link LoadGroup}
- Define which attributes should be copied within a {@link CopyGroup}
To reference nested attributes a dot ('.') notation is used to reference related attributes. All attribute names provided are assumed to be correct until processed against the mappings during usage of the group. @see FetchGroup @see LoadGroup @see CopyGroup @author ailitchev @since EclipseLink 2.1

        }
        setCurrentMapping(mapping);
        setCurrentDescriptor(null);


        if (shouldIterateOnPrimitives()) {// false by default
            AttributeGroup currentGroupOriginal = null;
            AttributeItem currentItemOriginal = null;
            if(this.usesGroup) {
                currentGroupOriginal = this.currentGroup;
                currentItemOriginal = this.currentItem;
                this.currentGroup = this.currentItem.getGroup();

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            getVisitedObjects().put(referenceObject, referenceObject);
        }
        setCurrentMapping(mapping);
        setCurrentDescriptor(getDescriptorFor(referenceObject));


        AttributeGroup currentGroupOriginal = null;
        AttributeItem currentItemOriginal = null;
        if(this.usesGroup) {
            currentGroupOriginal = this.currentGroup;
            currentItemOriginal = this.currentItem;
            this.currentGroup = this.currentItem.getGroup();

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                }
            }
        }
        
        if (this.usesGroup) {
            AttributeGroup currentGroupOriginal = this.currentGroup;
            AttributeItem currentItemOriginal = this.currentItem;
            for (DatabaseMapping mapping : mappings) {
                this.currentItem = this.currentGroup.getItem(mapping.getAttributeName());
                // iterate only over the mappings found in the group
                if (currentItem != null) {

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        }
        throw new PersistenceException(ExceptionLocalization.buildMessage("unable_to_unwrap_jpa", new String[]{EntityManagerFactory.class.getName(),cls.getName()}));
    }


    public <T> void addNamedEntityGraph(String graphName, EntityGraph<T> entityGraph) {
        AttributeGroup group = ((EntityGraphImpl)entityGraph).getAttributeGroup().clone();
        group.setName(graphName);
        this.getAbstractSession().getAttributeGroups().put(graphName, group);
        this.getAbstractSession().getDescriptor(((EntityGraphImpl)entityGraph).getClassType()).addAttributeGroup(group);
    }

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        }
        throw new PersistenceException(ExceptionLocalization.buildMessage("unable_to_unwrap_jpa", new String[]{EntityManagerFactory.class.getName(),cls.getName()}));
    }


    public <T> void addNamedEntityGraph(String graphName, EntityGraph<T> entityGraph) {
        AttributeGroup group = ((EntityGraphImpl)entityGraph).getAttributeGroup().clone();
        group.setName(graphName);
        this.getServerSession().getAttributeGroups().put(graphName, group);
        this.getServerSession().getDescriptor(((EntityGraphImpl)entityGraph).getClassType()).addAttributeGroup(group);
    }

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        DatabaseQuery applyToDatabaseQuery(Object valueToApply, DatabaseQuery query, ClassLoader loader, AbstractSession activeSession) {
            if (query.isObjectLevelReadQuery()) {
                if(valueToApply != null) {
                    if (valueToApply instanceof String){
                        AttributeGroup eg = activeSession.getAttributeGroups().get(valueToApply);
                        if (eg != null){
                            FetchGroup fg = eg.toFetchGroup();
                            fg.setShouldLoadAll(true);
                            ((ObjectLevelReadQuery)query).setFetchGroup(fg);
                        }else{
                            throw new IllegalArgumentException(ExceptionLocalization.buildMessage("no_entity_graph_of_name", new Object[]{valueToApply}));
                        }

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        DatabaseQuery applyToDatabaseQuery(Object valueToApply, DatabaseQuery query, ClassLoader loader, AbstractSession activeSession) {
            if (query.isObjectLevelReadQuery()) {
                if(valueToApply != null) {
                    if (valueToApply instanceof String){
                        AttributeGroup eg = activeSession.getAttributeGroups().get(valueToApply);
                        if (eg != null){
                            ((ObjectLevelReadQuery)query).setLoadGroup(eg.toLoadGroup());
                        }else{
                            throw new IllegalArgumentException(ExceptionLocalization.buildMessage("no_entity_graph_of_name", new Object[]{valueToApply}));
                        }
                    }else if (valueToApply instanceof EntityGraphImpl){
                        ((ObjectLevelReadQuery)query).setLoadGroup(((EntityGraphImpl)valueToApply).getAttributeGroup().toLoadGroup());

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        }
        if (node == null){
            node = new AttributeNodeImpl<X>(attributeName);
            addAttributeNodeImpl(node);
        }
        AttributeGroup localGroup = null;
        DatabaseMapping mapping = descriptor.getMappingForAttributeName(attributeName);
        if (mapping == null) {
            throw new IllegalArgumentException(ExceptionLocalization.buildMessage("metamodel_managed_type_attribute_not_present", new Object[] { this.descriptor.getJavaClassName(), attributeName }));
        }


        localGroup = new AttributeGroup(attributeName, type, true);


        ClassDescriptor targetDesc = mapping.getReferenceDescriptor();
        if (type != null && targetDesc.hasInheritance()) {
            targetDesc = targetDesc.getInheritancePolicy().getDescriptor(type);
            if (targetDesc == null) {

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        }
        if (node == null){
            node = new AttributeNodeImpl<X>(attributeName);
            addAttributeNodeImpl(node);
        }
        AttributeGroup localGroup = null;
        DatabaseMapping mapping = descriptor.getMappingForAttributeName(attributeName);
        if (mapping == null) {
            throw new IllegalArgumentException(ExceptionLocalization.buildMessage("metamodel_managed_type_attribute_not_present", new Object[] { this.descriptor.getJavaClassName(), attributeName }));
        }
        if (!mapping.getContainerPolicy().isMappedKeyMapPolicy() && !((MappedKeyMapContainerPolicy) mapping.getContainerPolicy()).isMapKeyAttribute()) {
            throw new IllegalArgumentException(ExceptionLocalization.buildMessage("attribute_is_not_map_with_managed_key", new Object[] { attributeName, descriptor.getJavaClassName() }));
        }


        localGroup = new AttributeGroup(attributeName, type, true);


        ClassDescriptor targetDesc = ((MappedKeyMapContainerPolicy) mapping.getContainerPolicy()).getDescriptorForMapKey();
        if (type != null && targetDesc.hasInheritance()) {
            targetDesc = targetDesc.getInheritancePolicy().getDescriptor(type);
            if (targetDesc == null) {

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            targetDesc = targetDesc.getInheritancePolicy().getDescriptor(type);
            if (targetDesc == null) {
                throw new IllegalArgumentException(ExceptionLocalization.buildMessage("type_unkown_for_this_entity", new Object[] { type.getName(), this.descriptor.getJavaClassName() }));
            }
        }
        AttributeGroup subGroup = new AttributeGroup(this.attributeGroup.getName(), type, true);
        this.attributeGroup.getSubClassGroups().put(type, subGroup);
        subGroup.setAllSubclasses(this.attributeGroup.getSubClassGroups());
        this.attributeGroup.insertSubClass(subGroup);
        return new EntityGraphImpl(subGroup, targetDesc);
    }

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