| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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.apache.metamodel.util; |
| |
| import java.util.Collection; |
| import java.util.Collections; |
| |
| /** |
| * A predicate that uses an exclusion list ("black list") of elements to |
| * determine whether to evaluate true or false. |
| * |
| * @param <E> |
| */ |
| public class ExclusionPredicate<E> implements Predicate<E> { |
| |
| private final Collection<E> _exclusionList; |
| |
| public ExclusionPredicate(Collection<E> exclusionList) { |
| _exclusionList = exclusionList; |
| } |
| |
| @Override |
| public Boolean eval(E arg) { |
| if (_exclusionList.contains(arg)) { |
| return false; |
| } |
| return true; |
| } |
| |
| public Collection<E> getExclusionList() { |
| return Collections.unmodifiableCollection(_exclusionList); |
| } |
| } |