/*******************************************************************************
* Copyright (c) 2013, 2015 Oracle and/or its affiliates. All rights reserved.
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v1.0 and Eclipse Distribution License v. 1.0
* which accompanies this distribution.
* The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html
* and the Eclipse Distribution License is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* Contributors:
* 02/13/2013-2.5 Guy Pelletier
* - 397772: JPA 2.1 Entity Graph Support (XML support)
******************************************************************************/
package org.eclipse.persistence.internal.jpa.metadata.graphs;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.eclipse.persistence.internal.helper.ClassConstants;
import org.eclipse.persistence.internal.jpa.metadata.ORMetadata;
import org.eclipse.persistence.internal.jpa.metadata.accessors.classes.ClassAccessor;
import org.eclipse.persistence.internal.jpa.metadata.accessors.objects.MetadataAccessibleObject;
import org.eclipse.persistence.internal.jpa.metadata.accessors.objects.MetadataAnnotation;
import org.eclipse.persistence.internal.jpa.metadata.accessors.objects.MetadataClass;
import org.eclipse.persistence.internal.jpa.metadata.xml.XMLEntityMappings;
import org.eclipse.persistence.queries.AttributeGroup;
/**
* Object to hold onto named sub graph metadata.
*
* Key notes:
* - any metadata mapped from XML to this class must be compared in the
* equals method.
* - any metadata mapped from XML to this class must be initialized in the
* initXMLObject method.
* - when loading from annotations, the constructor accepts the metadata
* accessor this metadata was loaded from. Used it to look up any
* 'companion' annotation needed for processing.
* - methods should be preserved in alphabetical order.
*
* @author Guy Pelletier
* @since EclipseLink 2.5
*/
public class NamedSubgraphMetadata extends ORMetadata {
protected String m_name;
protected MetadataClass m_type;
protected String m_typeName;
protected List<NamedAttributeNodeMetadata> m_namedAttributeNodes = new ArrayList<NamedAttributeNodeMetadata>();
/**
* INTERNAL:
* Used for XML loading.
*/
public NamedSubgraphMetadata() {
super("<named-subgraph>");
}
/**
* INTERNAL:
* Used for annotation loading.
*/
public NamedSubgraphMetadata(MetadataAnnotation namedSubgraph, ClassAccessor accessor) {
super(namedSubgraph, accessor);
m_name = namedSubgraph.getAttributeString("name");
m_type = getMetadataClass(namedSubgraph.getAttributeClass("type", ClassConstants.Object_Class));
for (Object attributeNode : namedSubgraph.getAttributeArray("attributeNodes")) {
m_namedAttributeNodes.add(new NamedAttributeNodeMetadata((MetadataAnnotation) attributeNode, accessor));
}
}
/**
* INTERNAL:
* Used for XML merging and overriding.
*/
@Override
public boolean equals(Object objectToCompare) {
if (objectToCompare instanceof NamedSubgraphMetadata) {
NamedSubgraphMetadata namedSubgraph = (NamedSubgraphMetadata) objectToCompare;
if (! valuesMatch(m_name, namedSubgraph.getName())) {
return false;
}
if (! valuesMatch(m_typeName, namedSubgraph.getTypeName())) {
return false;
}
return valuesMatch(m_namedAttributeNodes, namedSubgraph.getNamedAttributeNodes());
}
return false;
}
@Override
public int hashCode() {
int result = m_name != null ? m_name.hashCode() : 0;
result = 31 * result + (m_typeName != null ? m_typeName.hashCode() : 0);
result = 31 * result + (m_namedAttributeNodes != null ? m_namedAttributeNodes.hashCode() : 0);
return result;
}
/**
* INTERNAL:
* The unique identifier of named subgraph metadata.
*/
@Override
public String getIdentifier() {
return getName();
}
/**
* INTERNAL:
* Used for OX mapping.
*/
public String getName() {
return m_name;
}
/**
* INTERNAL:
* Used for OX mapping.
*/
public List<NamedAttributeNodeMetadata> getNamedAttributeNodes() {
return m_namedAttributeNodes;
}
/**
* INTERNAL:
*/
public String getTypeClassName() {
return m_type.getName();
}
/**
* INTERNAL:
* Used for OX mapping.
*/
public String getTypeName() {
return m_typeName;
}
/**
* INTERNAL:
*/
@Override
public void initXMLObject(MetadataAccessibleObject accessibleObject, XMLEntityMappings entityMappings) {
super.initXMLObject(accessibleObject, entityMappings);
// Initialize lists of ORMetadata objects.
initXMLObjects(m_namedAttributeNodes, accessibleObject);
// Initialize simple class objects.
if (m_typeName != null && ! m_typeName.equals("")) {
m_type = initXMLClassName(m_typeName);
} else {
m_type = getMetadataClass(ClassConstants.Object_Class);
}
}
/**
* INTERNAL:
* Process the named subgraph metadata into a new attribute group.
*/
public void process(Map<String, Map<String, AttributeGroup>> attributeGraphs) {
AttributeGroup attributeGraph = new AttributeGroup(getName(), getTypeClassName(), true);
if (! attributeGraphs.containsKey(getName())) {
attributeGraphs.put(getName(), new HashMap<String, AttributeGroup>());
}
attributeGraphs.get(getName()).put(getTypeClassName(), attributeGraph);
}
/**
* INTERNAL:
* Process the named subgraph metadata attribute nodes.
*/
public void processAttributeNodes(Map<String, Map<String, AttributeGroup>> attributeGraphs, AttributeGroup subgraph, AttributeGroup entityGraph) {
for (NamedAttributeNodeMetadata attributeNode : getNamedAttributeNodes()) {
attributeNode.process(attributeGraphs, subgraph, entityGraph);
}
}
/**
* INTERNAL:
* Used for OX mapping.
*/
public void setName(String name) {
m_name = name;
}
/**
* INTERNAL:
* Used for OX mapping.
*/
public void setNamedAttributeNodes(List<NamedAttributeNodeMetadata> namedAttributeNodes) {
m_namedAttributeNodes = namedAttributeNodes;
}
/**
* INTERNAL:
*/
public void setType(MetadataClass type) {
m_type = type;
}
/**
* INTERNAL:
* Used for OX mapping.
*/
public void setTypeName(String typeName) {
m_typeName = typeName;
}
}