//$Id: Dom4jInstantiator.java 7449 2005-07-11 17:31:50Z steveebersole $
package org.hibernate.tuple;
import java.io.Serializable;
import java.util.HashSet;
import java.util.Iterator;
import org.dom4j.Element;
import org.hibernate.util.XMLHelper;
import org.hibernate.mapping.PersistentClass;
import org.hibernate.mapping.Component;
/**
* Performs "instantiation" based on DOM4J elements.
*/
public class Dom4jInstantiator implements Instantiator {
private final String nodeName;
private final HashSet isInstanceNodeNames = new HashSet();
public Dom4jInstantiator(Component component) {
this.nodeName = component.getNodeName();
isInstanceNodeNames.add( nodeName );
}
public Dom4jInstantiator(PersistentClass mappingInfo) {
this.nodeName = mappingInfo.getNodeName();
isInstanceNodeNames.add( nodeName );
if ( mappingInfo.hasSubclasses() ) {
Iterator itr = mappingInfo.getSubclassClosureIterator();
while ( itr.hasNext() ) {
final PersistentClass subclassInfo = ( PersistentClass ) itr.next();
isInstanceNodeNames.add( subclassInfo.getNodeName() );
}
}
}
public Object instantiate(Serializable id) {
return instantiate();
}
public Object instantiate() {
return XMLHelper.generateDom4jElement( nodeName );
}
public boolean isInstance(Object object) {
if ( object instanceof Element ) {
return isInstanceNodeNames.contains( ( ( Element ) object ).getName() );
}
else {
return false;
}
}
}
|