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package oracle.toplink.essentials.internal.ejb.cmp3.xml.accessors;
import oracle.toplink.essentials.internal.ejb.cmp3.metadata.accessors.ClassAccessor;
import oracle.toplink.essentials.internal.ejb.cmp3.metadata.accessors.EmbeddedAccessor;
import oracle.toplink.essentials.internal.ejb.cmp3.metadata.accessors.objects.MetadataAccessibleObject;
import oracle.toplink.essentials.internal.ejb.cmp3.metadata.accessors.objects.MetadataClass;
import oracle.toplink.essentials.internal.ejb.cmp3.metadata.MetadataDescriptor;
import oracle.toplink.essentials.internal.ejb.cmp3.xml.XMLConstants;
import oracle.toplink.essentials.internal.ejb.cmp3.xml.XMLHelper;
import oracle.toplink.essentials.internal.ejb.cmp3.xml.columns.XMLColumn;
import oracle.toplink.essentials.mappings.AggregateObjectMapping;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
/**
* An XML extended embedded relationship accessor.
*
* @author Guy Pelletier
* @since TopLink EJB 3.0 Reference Implementation
*/
public class XMLEmbeddedAccessor extends EmbeddedAccessor {
protected Node m_node;
protected XMLHelper m_helper;
/**
* INTERNAL:
*/
public XMLEmbeddedAccessor(MetadataAccessibleObject accessibleObject, Node node, XMLClassAccessor classAccessor) {
super(accessibleObject, classAccessor);
m_node = node;
m_helper = classAccessor.getHelper();
}
/**
* INTERNAL: (Overrride from EmbeddedAccesor)
*
* Currently if the embedded is specified in XML with no attribute
* overrides, we do NOT search the class for attribute overrides. It is
* assumed that they are to be defaulted.
*/
protected void processAttributeOverrides(AggregateObjectMapping mapping) {
NodeList nodes = m_helper.getNodes(m_node, XMLConstants.ATTRIBUTE_OVERRIDE);
if (nodes != null) {
for (int i = 0; i < nodes.getLength(); i++) {
processAttributeOverride(mapping, new XMLColumn(nodes.item(i), m_helper, getAnnotatedElement()));
}
}
}
/**
* INTERNAL: (Overrride from EmbeddedAccesor)
*
* Fast track processing a ClassAccessor for the given descriptor.
* Inheritance root classes and embeddables may be fast tracked.
*
* NOTE: The class passed in may not have any XML representation. If so,
* pass up to the parent.
*/
protected ClassAccessor processAccessor(MetadataDescriptor descriptor) {
Node node = m_helper.locateEntityNode(descriptor.getJavaClass());
if (node != null) {
XMLClassAccessor accessor = new XMLClassAccessor(new MetadataClass(descriptor.getJavaClass()), node, m_helper, m_processor, descriptor);
descriptor.setClassAccessor(accessor);
accessor.process();
accessor.setIsProcessed();
return accessor;
} else {
return super.processAccessor(descriptor);
}
}
}