org.hibernate.bytecode.enhance.spi.CompositeOwnerTracker Maven / Gradle / Ivy
/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* Copyright (c) 2012, Red Hat Inc. 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 Inc.
*
* 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.bytecode.enhance.spi;
import org.hibernate.engine.spi.CompositeOwner;
/**
* small low memory class to keep references to composite owners
*
* @author Ståle W. Pedersen
*/
public class CompositeOwnerTracker {
private String[] names;
private CompositeOwner[] owners;
private int size;
public CompositeOwnerTracker() {
names = new String[1];
owners = new CompositeOwner[1];
}
public void add(String name, CompositeOwner owner) {
for ( int i = 0; i < size; i++ ) {
if ( names[i].equals( name ) ) {
owners[i] = owner;
return;
}
}
if ( size >= names.length ) {
String[] tmpNames = new String[size + 1];
System.arraycopy( names, 0, tmpNames, 0, size );
names = tmpNames;
CompositeOwner[] tmpOwners = new CompositeOwner[size + 1];
System.arraycopy( owners, 0, tmpOwners, 0, size );
owners = tmpOwners;
}
names[size] = name;
owners[size] = owner;
size++;
}
public void callOwner(String fieldName) {
for ( int i = 0; i < size; i++ ) {
owners[i].$$_hibernate_trackChange( names[i] + fieldName );
}
}
public void removeOwner(String name) {
for ( int i = 0; i < size; i++ ) {
if ( names[i].equals( name ) ) {
if ( i < size ) {
for ( int j = i; j < size - 1; j++ ) {
names[j] = names[j + 1];
owners[j] = owners[j + 1];
}
names[size - 1] = null;
owners[size - 1] = null;
size--;
}
}
}
}
}