HookFactory.java |
1 /** 2 * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved. 3 * 4 * 5 * 6 * 7 * The contents of this file are subject to the terms of the Liferay Enterprise 8 * Subscription License ("License"). You may not use this file except in 9 * compliance with the License. You can obtain a copy of the License by 10 * contacting Liferay, Inc. See the License for the specific language governing 11 * permissions and limitations under the License, including but not limited to 12 * distribution rights of the Software. 13 * 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 20 * SOFTWARE. 21 */ 22 23 package com.liferay.documentlibrary.util; 24 25 import com.liferay.portal.kernel.log.Log; 26 import com.liferay.portal.kernel.log.LogFactoryUtil; 27 import com.liferay.portal.kernel.util.PortalClassLoaderUtil; 28 import com.liferay.portal.util.PropsValues; 29 30 /** 31 * <a href="HookFactory.java.html"><b><i>View Source</i></b></a> 32 * 33 * @author Brian Wing Shun Chan 34 */ 35 public class HookFactory { 36 37 public static Hook getInstance() { 38 if (_hook == null) { 39 if (_log.isDebugEnabled()) { 40 _log.debug("Instantiate " + PropsValues.DL_HOOK_IMPL); 41 } 42 43 ClassLoader classLoader = PortalClassLoaderUtil.getClassLoader(); 44 45 try { 46 _hook = (Hook)classLoader.loadClass( 47 PropsValues.DL_HOOK_IMPL).newInstance(); 48 } 49 catch (Exception e) { 50 _log.error(e, e); 51 } 52 } 53 54 if (_log.isDebugEnabled()) { 55 _log.debug("Return " + _hook.getClass().getName()); 56 } 57 58 return _hook; 59 } 60 61 public static void setInstance(Hook hook) { 62 if (_log.isDebugEnabled()) { 63 _log.debug("Set " + hook.getClass().getName()); 64 } 65 66 _hook = hook; 67 } 68 69 private static Log _log = LogFactoryUtil.getLog(HookFactory.class); 70 71 private static Hook _hook = null; 72 73 }