001/* 002 * (C) Copyright 2006-2011 Nuxeo SA (http://nuxeo.com/) and others. 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * http://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 * 016 * Contributors: 017 * Nuxeo - initial API and implementation 018 * 019 * $Id$ 020 */ 021 022package org.nuxeo.runtime.model.impl; 023 024import java.io.Serializable; 025 026import org.nuxeo.common.xmap.XMap; 027import org.nuxeo.common.xmap.annotation.XContent; 028import org.nuxeo.common.xmap.annotation.XNode; 029import org.nuxeo.common.xmap.annotation.XNodeList; 030import org.nuxeo.common.xmap.annotation.XObject; 031import org.nuxeo.common.xmap.annotation.XParent; 032import org.nuxeo.runtime.model.Extension; 033import org.nuxeo.runtime.model.ExtensionPoint; 034import org.nuxeo.runtime.model.RegistrationInfo; 035import org.w3c.dom.Element; 036 037/** 038 * @author <a href="mailto:bs@nuxeo.com">Bogdan Stefanescu</a> 039 */ 040@XObject 041public class ExtensionPointImpl implements ExtensionPoint, Serializable { 042 043 private static final long serialVersionUID = 3959978759388449332L; 044 045 @XNode("@name") 046 public String name; 047 048 @XNode("@target") 049 public String superComponent; 050 051 @XContent("documentation") 052 public String documentation; 053 054 @XNodeList(value = "object@class", type = Class[].class, componentType = Class.class) 055 public transient Class<?>[] contributions; 056 057 public transient XMap xmap; 058 059 @XParent 060 public transient RegistrationInfo ri; 061 062 @Override 063 public Class<?>[] getContributions() { 064 return contributions; 065 } 066 067 @Override 068 public String getName() { 069 return name; 070 } 071 072 @Override 073 public String getDocumentation() { 074 return documentation; 075 } 076 077 @Override 078 public String getSuperComponent() { 079 return superComponent; 080 } 081 082 public Extension createExtension(Element element) { 083 return null; 084 } 085 086 public Object[] loadContributions(RegistrationInfo owner, Extension extension) { 087 Object[] contribs = extension.getContributions(); 088 if (contribs != null) { 089 // contributions already computed - this should e an overloaded (extended) extension point 090 return contribs; 091 } 092 // should compute now the contributions 093 if (contributions != null) { 094 if (xmap == null) { 095 xmap = new XMap(); 096 for (Class<?> contrib : contributions) { 097 if (contrib != null) { 098 xmap.register(contrib); 099 } else { 100 throw new RuntimeException("Unknown implementation class when contributing to " 101 + owner.getComponent().getName()); 102 } 103 } 104 } 105 contribs = xmap.loadAll(new XMapContext(extension.getContext()), extension.getElement()); 106 extension.setContributions(contribs); 107 } 108 return contribs; 109 } 110 111}