org.databene.commons.accessor.NotAccessor Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of databene-commons Show documentation
Show all versions of databene-commons Show documentation
'databene commons' is an open source Java library by Volker Bergmann.
It provides extensions to the Java core library by utility classes, abstract concepts
and concrete implementations.
/*
* Copyright (C) 2004-2014 Volker Bergmann ([email protected]).
* All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
* http://www.apache.org/licenses/LICENSE-2.0
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.databene.commons.accessor;
import org.databene.commons.Accessor;
/**
* Inverts the boolean result of another Accessor.
*
* Created: 07.03.2006 16:48:52
* @author Volker Bergmann
*/
public class NotAccessor extends AccessorProxy {
public NotAccessor(Accessor realAccessor) {
super(realAccessor);
}
// Accessor interface ----------------------------------------------------------------------------------------------
@Override
public Boolean getValue(E target) {
Boolean value = super.getValue(target);
if (value == null)
return null;
else if (value.booleanValue())
return Boolean.FALSE;
else
return Boolean.TRUE;
}
// java.lang.Object overrides --------------------------------------------------------------------------------------
@SuppressWarnings("rawtypes")
@Override
public boolean equals(Object o) {
if (this == o)
return true;
if (o == null || getClass() != o.getClass())
return false;
final NotAccessor that = (NotAccessor) o;
return this.realAccessor.equals(that.realAccessor);
}
@Override
public int hashCode() {
return realAccessor.hashCode();
}
}