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 org.nuxeo.common.xmap.XMap; 025import org.nuxeo.common.xmap.XMapException; 026import org.nuxeo.common.xmap.annotation.XContent; 027import org.nuxeo.common.xmap.annotation.XNode; 028import org.nuxeo.common.xmap.annotation.XNodeList; 029import org.nuxeo.common.xmap.annotation.XObject; 030import org.nuxeo.common.xmap.annotation.XParent; 031import org.nuxeo.runtime.model.Extension; 032import org.nuxeo.runtime.model.ExtensionPoint; 033import org.nuxeo.runtime.model.RegistrationInfo; 034import org.w3c.dom.Element; 035 036/** 037 * @author <a href="mailto:bs@nuxeo.com">Bogdan Stefanescu</a> 038 */ 039@XObject 040public class ExtensionPointImpl implements ExtensionPoint { 041 042 @XNode("@name") 043 public String name; 044 045 @XNode("@target") 046 public String superComponent; 047 048 @XContent("documentation") 049 public String documentation; 050 051 @XNodeList(value = "object@class", type = Class[].class, componentType = Class.class) 052 public Class<?>[] contributions; 053 054 public XMap xmap; 055 056 @XParent 057 public RegistrationInfo ri; 058 059 @Override 060 public Class<?>[] getContributions() { 061 return contributions; 062 } 063 064 @Override 065 public String getName() { 066 return name; 067 } 068 069 @Override 070 public String getDocumentation() { 071 return documentation; 072 } 073 074 @Override 075 public String getSuperComponent() { 076 return superComponent; 077 } 078 079 public Extension createExtension(Element element) { 080 return null; 081 } 082 083 public Object[] loadContributions(RegistrationInfo owner, Extension extension) { 084 Object[] contribs = extension.getContributions(); 085 if (contribs != null) { 086 // contributions already computed - this should e an overloaded (extended) extension point 087 return contribs; 088 } 089 // should compute now the contributions 090 if (contributions != null) { 091 if (xmap == null) { 092 xmap = new XMap(); 093 for (Class<?> contrib : contributions) { 094 if (contrib != null) { 095 xmap.register(contrib); 096 } else { 097 throw new RuntimeException("Unknown implementation class when contributing to " 098 + owner.getComponent().getName()); 099 } 100 } 101 } 102 try { 103 contribs = xmap.loadAll(new XMapContext(extension.getContext()), extension.getElement()); 104 } catch (XMapException e) { 105 throw new RuntimeException( 106 e.getMessage() + " while processing component: " + extension.getComponent().getName().getName(), 107 e); 108 } 109 extension.setContributions(contribs); 110 } 111 return contribs; 112 } 113 114}