001/** 002 * 003 * Copyright 2014 Florian Schmaus 004 * 005 * Licensed under the Apache License, Version 2.0 (the "License"); 006 * you may not use this file except in compliance with the License. 007 * You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017package org.jivesoftware.smack; 018 019import java.lang.ref.WeakReference; 020 021import org.jivesoftware.smack.util.Objects; 022 023public abstract class Manager { 024 025 final WeakReference<XMPPConnection> weakConnection; 026 027 public Manager(XMPPConnection connection) { 028 Objects.requireNonNull(connection, "XMPPConnection must not be null"); 029 030 weakConnection = new WeakReference<XMPPConnection>(connection); 031 } 032 033 protected final XMPPConnection connection() { 034 return weakConnection.get(); 035 } 036}