/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* Copyright (c) 2008, Red Hat Middleware LLC or third-party contributors as
* indicated by the @author tags or express copyright attribution
* statements applied by the authors. All third-party contributions are
* distributed under license by Red Hat Middleware LLC.
*
* This copyrighted material is made available to anyone wishing to use, modify,
* copy, or redistribute it subject to the terms and conditions of the GNU
* Lesser General Public License, as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
* for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this distribution; if not, write to:
* Free Software Foundation, Inc.
* 51 Franklin Street, Fifth Floor
* Boston, MA 02110-1301 USA
*
*/
package org.hibernate.intercept.javassist;
import java.io.Serializable;
import java.util.Set;
import org.hibernate.bytecode.javassist.FieldHandler;
import org.hibernate.intercept.AbstractFieldInterceptor;
import org.hibernate.engine.SessionImplementor;
import org.hibernate.proxy.HibernateProxy;
import org.hibernate.proxy.LazyInitializer;
/**
* A field-level interceptor that initializes lazily fetched properties.
* This interceptor can be attached to classes instrumented by Javassist.
* Note that this implementation assumes that the instance variable
* name is the same as the name of the persistent property that must
* be loaded.
* </p>
* Note: most of the interesting functionality here is farmed off
* to the super-class. The stuff here mainly acts as an adapter to the
* Javassist-specific functionality, routing interception through
* the super-class's intercept() method
*
* @author Steve Ebersole
*/
public final class FieldInterceptorImpl extends AbstractFieldInterceptor implements FieldHandler, Serializable {
/**
* Package-protected constructor.
*
* @param session
* @param uninitializedFields
* @param entityName
*/
FieldInterceptorImpl(SessionImplementor session, Set uninitializedFields, String entityName) {
super( session, uninitializedFields, entityName );
}
// FieldHandler impl ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
public boolean readBoolean(Object target, String name, boolean oldValue) {
return ( ( Boolean ) intercept( target, name, oldValue ? Boolean.TRUE : Boolean.FALSE ) )
.booleanValue();
}
public byte readByte(Object target, String name, byte oldValue) {
return ( ( Byte ) intercept( target, name, new Byte( oldValue ) ) ).byteValue();
}
public char readChar(Object target, String name, char oldValue) {
return ( ( Character ) intercept( target, name, new Character( oldValue ) ) )
.charValue();
}
public double readDouble(Object target, String name, double oldValue) {
return ( ( Double ) intercept( target, name, new Double( oldValue ) ) )
.doubleValue();
}
public float readFloat(Object target, String name, float oldValue) {
return ( ( Float ) intercept( target, name, new Float( oldValue ) ) )
.floatValue();
}
public int readInt(Object target, String name, int oldValue) {
return ( ( Integer ) intercept( target, name, new Integer( oldValue ) ) )
.intValue();
}
public long readLong(Object target, String name, long oldValue) {
return ( ( Long ) intercept( target, name, new Long( oldValue ) ) ).longValue();
}
public short readShort(Object target, String name, short oldValue) {
return ( ( Short ) intercept( target, name, new Short( oldValue ) ) )
.shortValue();
}
public Object readObject(Object target, String name, Object oldValue) {
Object value = intercept( target, name, oldValue );
if (value instanceof HibernateProxy) {
LazyInitializer li = ( (HibernateProxy) value ).getHibernateLazyInitializer();
if ( li.isUnwrap() ) {
value = li.getImplementation();
}
}
return value;
}
public boolean writeBoolean(Object target, String name, boolean oldValue, boolean newValue) {
dirty();
intercept( target, name, oldValue ? Boolean.TRUE : Boolean.FALSE );
return newValue;
}
public byte writeByte(Object target, String name, byte oldValue, byte newValue) {
dirty();
intercept( target, name, new Byte( oldValue ) );
return newValue;
}
public char writeChar(Object target, String name, char oldValue, char newValue) {
dirty();
intercept( target, name, new Character( oldValue ) );
return newValue;
}
public double writeDouble(Object target, String name, double oldValue, double newValue) {
dirty();
intercept( target, name, new Double( oldValue ) );
return newValue;
}
public float writeFloat(Object target, String name, float oldValue, float newValue) {
dirty();
intercept( target, name, new Float( oldValue ) );
return newValue;
}
public int writeInt(Object target, String name, int oldValue, int newValue) {
dirty();
intercept( target, name, new Integer( oldValue ) );
return newValue;
}
public long writeLong(Object target, String name, long oldValue, long newValue) {
dirty();
intercept( target, name, new Long( oldValue ) );
return newValue;
}
public short writeShort(Object target, String name, short oldValue, short newValue) {
dirty();
intercept( target, name, new Short( oldValue ) );
return newValue;
}
public Object writeObject(Object target, String name, Object oldValue, Object newValue) {
dirty();
intercept( target, name, oldValue );
return newValue;
}
public String toString() {
return "FieldInterceptorImpl(" +
"entityName=" + getEntityName() +
",dirty=" + isDirty() +
",uninitializedFields=" + getUninitializedFields() +
')';
}
}