Java tutorial
/* * Copyright 2013-2015 Erudika. http://erudika.com * * 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. * * For issues and patches go to: https://github.com/erudika */ package com.erudika.para.queue; import java.util.concurrent.ConcurrentLinkedQueue; import javax.inject.Singleton; import org.apache.commons.lang3.StringUtils; /** * * @author Alex Bogdanovski [alex@erudika.com] */ @Singleton public class MockQueue implements Queue { private ConcurrentLinkedQueue<String> q = new ConcurrentLinkedQueue<String>(); private String name; public MockQueue() { this("queue"); } public MockQueue(String name) { this.name = name; } @Override public String pull() { String s = q.poll(); return StringUtils.isBlank(s) ? "[]" : s; } @Override public void push(String task) { if (!StringUtils.isBlank(task)) { q.add(task); } } @Override public String getName() { return name; } @Override public void setName(String name) { this.name = name; } }