package org.hibernate.test.dynamicentity.tuplizer;
import java.io.Serializable;
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Proxy;
import org.hibernate.HibernateException;
import org.hibernate.internal.util.ReflectHelper;
import org.hibernate.test.dynamicentity.Address;
import org.hibernate.test.dynamicentity.Company;
import org.hibernate.test.dynamicentity.Customer;
import org.hibernate.test.dynamicentity.DataProxyHandler;
import org.hibernate.test.dynamicentity.Person;
import org.hibernate.test.dynamicentity.ProxyHelper;
import org.hibernate.tuple.Instantiator;
/**
* @author <a href="mailto:steve@hibernate.org">Steve Ebersole </a>
*/
public class MyEntityInstantiator implements Instantiator {
private final String entityName;
public MyEntityInstantiator(String entityName) {
this.entityName = entityName;
}
public Object instantiate(Serializable id) {
if ( Person.class.getName().equals( entityName ) ) {
return ProxyHelper.newPersonProxy( id );
}
if ( Customer.class.getName().equals( entityName ) ) {
return ProxyHelper.newCustomerProxy( id );
}
else if ( Company.class.getName().equals( entityName ) ) {
return ProxyHelper.newCompanyProxy( id );
}
else if ( Address.class.getName().equals( entityName ) ) {
return ProxyHelper.newAddressProxy( id );
}
else {
throw new IllegalArgumentException( "unknown entity for instantiation [" + entityName + "]" );
}
}
public Object instantiate() {
return instantiate( null );
}
public boolean isInstance(Object object) {
String resolvedEntityName = null;
if ( Proxy.isProxyClass( object.getClass() ) ) {
InvocationHandler handler = Proxy.getInvocationHandler( object );
if ( DataProxyHandler.class.isAssignableFrom( handler.getClass() ) ) {
DataProxyHandler myHandler = ( DataProxyHandler ) handler;
resolvedEntityName = myHandler.getEntityName();
}
}
try {
return ReflectHelper.classForName( entityName ).isInstance( object );
}
catch( Throwable t ) {
throw new HibernateException( "could not get handle to entity-name as interface : " + t );
}
// return entityName.equals( resolvedEntityName );
}
}