/* This file is part of the db4o object database http://www.db4o.com
Copyright (C) 2004 - 2011 Versant Corporation http://www.versant.com
db4o is free software; you can redistribute it and/or modify it under
the terms of version 3 of the GNU General Public License as published
by the Free Software Foundation.
db4o 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 General Public License
for more details.
You should have received a copy of the GNU General Public License along
with this program. If not, see http://www.gnu.org/licenses/. */
package com.db4o.typehandlers;
import com.db4o.ext.*;
import com.db4o.foundation.*;
import com.db4o.internal.*;
import com.db4o.internal.delete.*;
import com.db4o.internal.marshall.*;
import com.db4o.marshall.*;
/**
* Typehandler that ignores all fields on a class
*/
public class IgnoreFieldsTypeHandler implements ReferenceTypeHandler, CascadingTypeHandler{
public static final TypeHandler4 INSTANCE = new IgnoreFieldsTypeHandler();
private IgnoreFieldsTypeHandler() {
}
public void defragment(DefragmentContext context) {
// do nothing
}
public void delete(DeleteContext context) throws Db4oIOException {
// do nothing
}
public void activate(ReferenceActivationContext context) {
}
public void write(WriteContext context, Object obj) {
}
public PreparedComparison prepareComparison(Context context, Object obj) {
return null;
}
public void cascadeActivation(ActivationContext context) {
// do nothing
}
public void collectIDs(QueryingReadContext context) {
// do nothing
}
public TypeHandler4 readCandidateHandler(QueryingReadContext context) {
return null;
}
}