| /* |
| * Copyright 1999-2005 The Apache Software Foundation |
| * |
| * 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. |
| * |
| */ |
| |
| /* $Id$ */ |
| |
| package org.apache.lenya.cms.cocoon.components.modules.input; |
| |
| import java.util.ArrayList; |
| import java.util.Iterator; |
| import java.util.List; |
| import java.util.Map; |
| |
| import org.apache.avalon.framework.configuration.Configuration; |
| import org.apache.avalon.framework.configuration.ConfigurationException; |
| import org.apache.cocoon.environment.ObjectModelHelper; |
| import org.apache.cocoon.environment.Request; |
| import org.apache.lenya.cms.repo.Document; |
| import org.apache.lenya.cms.repo.RepositoryException; |
| import org.apache.lenya.cms.repo.Session; |
| import org.apache.lenya.cms.repo.impl.RepositoryUtil; |
| import org.apache.lenya.cms.repo.metadata.Element; |
| import org.apache.lenya.cms.repo.metadata.ElementSet; |
| import org.apache.lenya.cms.repo.metadata.MetaData; |
| import org.apache.lenya.cms.repo.metadata.impl.DublinCoreElements; |
| |
| /** |
| * Input module to access the dublin core values. |
| */ |
| public class DublinCoreModule extends AbstractServiceableInputModule { |
| |
| /** |
| * @see org.apache.cocoon.components.modules.input.InputModule#getAttribute(java.lang.String, |
| * org.apache.avalon.framework.configuration.Configuration, java.util.Map) |
| */ |
| public Object getAttribute(String name, Configuration modeConf, Map objectModel) |
| throws ConfigurationException { |
| |
| Object value; |
| try { |
| Request request = ObjectModelHelper.getRequest(objectModel); |
| Document document = RepositoryUtil.getDocument(this.manager, request, getLogger()); |
| if (document == null) { |
| throw new ConfigurationException("There is no document for this page envelope!"); |
| } |
| MetaData dc = document.getMetaData(DublinCoreElements.NAME); |
| |
| if (!dc.getElementSet().contains(name)) { |
| throw new ConfigurationException("The attribute [" + name + "] is not supported!"); |
| } |
| |
| value = dc.getValue(name); |
| } catch (Exception e) { |
| throw new ConfigurationException("Obtaining dublin core value for [" + name |
| + "] failed: ", e); |
| } |
| |
| return value; |
| } |
| |
| /** |
| * @see org.apache.cocoon.components.modules.input.InputModule#getAttributeNames(org.apache.avalon.framework.configuration.Configuration, |
| * java.util.Map) |
| */ |
| public Iterator getAttributeNames(Configuration modeConf, Map objectModel) |
| throws ConfigurationException { |
| |
| // calling static method on DublinCoreImpl is a work-around |
| // because we do not have access to an instance here, because |
| // the page envelope cannot be read here. |
| |
| Request request = ObjectModelHelper.getRequest(objectModel); |
| Session session = RepositoryUtil.getSession(this.manager, request, getLogger()); |
| ElementSet dcElements; |
| try { |
| dcElements = session.getRepository() |
| .getMetaDataRegistry() |
| .getElementSet(DublinCoreElements.NAME); |
| } catch (RepositoryException e) { |
| throw new ConfigurationException("Obtaining attribute names failed: ", e); |
| } |
| |
| Element[] elements = dcElements.getElements(); |
| List names = new ArrayList(); |
| for (int i = 0; i < elements.length; i++) { |
| names.add(elements[i].getName()); |
| } |
| |
| return names.iterator(); |
| } |
| |
| /** |
| * @see org.apache.cocoon.components.modules.input.InputModule#getAttributeValues(java.lang.String, |
| * org.apache.avalon.framework.configuration.Configuration, java.util.Map) |
| */ |
| public Object[] getAttributeValues(String name, Configuration modeConf, Map objectModel) |
| throws ConfigurationException { |
| Object[] objects = { getAttribute(name, modeConf, objectModel) }; |
| return objects; |
| } |
| |
| } |