/*
* Copyright 2013 Robert von Burg <eitch@eitchnet.ch>
*
* 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 li.strolch.runtime.query.inmemory;
import li.strolch.model.StrolchElement;
import li.strolch.utils.dbc.DBC;
/**
* @author Robert von Burg <eitch@eitchnet.ch>
*/
public class NotSelector<T extends StrolchElement> extends BooleanSelector<T> {
/**
* @param selector
*/
public NotSelector(Selector<T> selector) {
super(selector);
}
/**
* @throws UnsupportedOperationException
* because a {@link NotSelector} can only work on a single {@link Selector}
*/
@Override
public NotSelector<T> with(Selector<T> selector) {
throw new UnsupportedOperationException("NotSelector can only have a single Selector"); //$NON-NLS-1$
}
@Override
public boolean select(T element) {
if (this.selectors == null || this.selectors.isEmpty())
return true;
DBC.PRE.assertTrue("Only one selector allowed!", this.selectors.size() == 1); //$NON-NLS-1$
return !this.selectors.get(0).select(element);
}
}