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https://github.com/Alfresco/alfresco-community-repo.git
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91ba631a3b
git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@19153 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261
415 lines
18 KiB
Java
415 lines
18 KiB
Java
/*
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* Copyright (C) 2005-2010 Alfresco Software Limited.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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* As a special exception to the terms and conditions of version 2.0 of
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* the GPL, you may redistribute this Program in connection with Free/Libre
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* and Open Source Software ("FLOSS") applications as described in Alfresco's
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* FLOSS exception. You should have recieved a copy of the text describing
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* the FLOSS exception, and it is also available here:
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* http://www.alfresco.com/legal/licensing"
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*/
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package org.alfresco.repo.rendition.executer;
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import java.io.IOException;
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import java.io.OutputStreamWriter;
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import java.io.Serializable;
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import java.io.Writer;
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import java.util.ArrayList;
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import java.util.Collection;
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import java.util.Date;
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import java.util.List;
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import java.util.Map;
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import org.alfresco.model.ContentModel;
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import org.alfresco.repo.action.ParameterDefinitionImpl;
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import org.alfresco.repo.template.TemplateProcessorMethod;
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import org.alfresco.repo.template.XSLTProcessor;
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import org.alfresco.repo.template.XSLTemplateModel;
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import org.alfresco.service.cmr.action.ParameterDefinition;
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import org.alfresco.service.cmr.dictionary.DataTypeDefinition;
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import org.alfresco.service.cmr.model.FileFolderService;
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import org.alfresco.service.cmr.model.FileInfo;
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import org.alfresco.service.cmr.model.FileNotFoundException;
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import org.alfresco.service.cmr.rendition.RenditionServiceException;
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import org.alfresco.service.cmr.repository.ContentWriter;
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import org.alfresco.service.cmr.repository.NodeRef;
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import org.alfresco.service.cmr.repository.StoreRef;
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import org.alfresco.service.cmr.repository.TemplateService;
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import org.alfresco.service.cmr.search.ResultSet;
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import org.alfresco.service.cmr.search.SearchService;
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import org.alfresco.service.namespace.NamespacePrefixResolver;
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import org.alfresco.service.namespace.NamespaceService;
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import org.alfresco.service.namespace.QName;
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import org.alfresco.util.XMLUtil;
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import org.apache.commons.logging.Log;
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import org.apache.commons.logging.LogFactory;
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import org.w3c.dom.Document;
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import org.w3c.dom.Element;
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import org.w3c.dom.Node;
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import org.xml.sax.SAXException;
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/**
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* @author Brian Remmington
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* @since 3.3
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*/
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public class XSLTRenderingEngine extends AbstractRenderingEngine
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{
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private static final Log log = LogFactory.getLog(XSLTRenderingEngine.class);
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public static final String NAME = "xsltRenderingEngine";
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public static final String PARAM_MODEL = "model";
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public static final String PARAM_TEMPLATE = "template_string";
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public static final String PARAM_TEMPLATE_NODE = "template_node";
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public static final String PARAM_TEMPLATE_PATH = "template_path";
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private TemplateService templateService;
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private XSLTFunctions xsltFunctions;
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private NamespacePrefixResolver namespacePrefixResolver;
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private FileFolderService fileFolderService;
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private SearchService searchService;
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/*
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* @see org.alfresco.repo.rendition.executer.AbstractRenderingEngine#render(org
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* .alfresco.service.cmr.repository.NodeRef, org.alfresco.service.cmr.rendition.RenditionDefinition,
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* org.alfresco.service.cmr.repository.ContentReader, org.alfresco.service.cmr.repository.ChildAssociationRef)
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*/
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@SuppressWarnings("unchecked")
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@Override
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protected void render(RenderingContext context)
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{
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NodeRef templateNode = getTemplateNode(context);
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Map<String, Serializable> paramMap = context.getCheckedParam(PARAM_MODEL, Map.class);
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try
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{
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XSLTemplateModel model = buildModel(context, paramMap);
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ContentWriter contentWriter = context.makeContentWriter();
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Writer writer = new OutputStreamWriter(contentWriter.getContentOutputStream());
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processTemplate(context, templateNode, model, writer);
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writer.flush();
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writer.close();
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}
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catch (Exception ex)
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{
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log.warn("Unexpected error while rendering through XSLT rendering engine.", ex);
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}
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}
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private void processTemplate(RenderingContext context, NodeRef templateNode, XSLTemplateModel model, Writer out)
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{
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String template = context.getCheckedParam(PARAM_TEMPLATE, String.class);
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if (template != null)
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{
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templateService.processTemplateString("xslt", (String) template, model, out);
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}
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else if (templateNode != null)
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{
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templateService.processTemplate("xslt", templateNode.toString(), model, out);
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}
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else
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{
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throwTemplateParamsNotFoundException();
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}
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}
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private void throwTemplateParamsNotFoundException()
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{
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StringBuilder msg = new StringBuilder("This action requires that either the ");
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msg.append(PARAM_TEMPLATE);
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msg.append(" parameter or the ");
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msg.append(PARAM_TEMPLATE_NODE);
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msg.append(" parameter be specified. ");
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throw new RenditionServiceException(msg.toString());
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}
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private NodeRef getTemplateNode(RenderingContext context)
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{
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NodeRef node = context.getCheckedParam(PARAM_TEMPLATE_NODE, NodeRef.class);
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if (node == null)
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{
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String path = context.getCheckedParam(PARAM_TEMPLATE_PATH, String.class);
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if (path != null && path.length() > 0)
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{
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StoreRef storeRef = context.getDestinationNode().getStoreRef();
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ResultSet result = searchService.query(storeRef, SearchService.LANGUAGE_XPATH, path);
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if (result.length() != 1)
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{
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throw new RenditionServiceException("Could not find template node for path: " + path);
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}
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node = result.getNodeRef(0);
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}
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}
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return node;
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}
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@SuppressWarnings("serial")
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protected XSLTemplateModel buildModel(RenderingContext context, Map<String, Serializable> suppliedParams)
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throws IOException, SAXException
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{
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final NodeRef sourceNode = context.getSourceNode();
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final NodeRef parentNode = nodeService.getPrimaryParent(context.getSourceNode()).getParentRef();
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final String sourcePath = getPath(sourceNode);
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final String parentPath = getPath(parentNode);
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XSLTemplateModel model = new XSLTemplateModel();
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// add simple scalar parameters
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model.put(QName.createQName(NamespaceService.ALFRESCO_URI, "date"), new Date());
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model.put(QName.createQName(NamespaceService.ALFRESCO_PREFIX, "source_file_name", namespacePrefixResolver),
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nodeService.getProperty(context.getSourceNode(), ContentModel.PROP_NAME));
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model.put(QName.createQName(NamespaceService.ALFRESCO_PREFIX, "source_path", namespacePrefixResolver),
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sourcePath);
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model.put(QName.createQName(NamespaceService.ALFRESCO_PREFIX, "parent_path", namespacePrefixResolver),
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parentPath);
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// add methods
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model.put(QName.createQName(NamespaceService.ALFRESCO_PREFIX, "encodeQuotes", namespacePrefixResolver),
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new TemplateProcessorMethod()
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{
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public Object exec(final Object[] arguments) throws IOException, SAXException
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{
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if (arguments.length != 1)
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{
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throw new IllegalArgumentException("expected 1 argument to encodeQuotes. got "
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+ arguments.length);
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}
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if (!(arguments[0] instanceof String))
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{
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throw new ClassCastException("expected arguments[0] to be a " + String.class.getName()
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+ ". got a " + arguments[0].getClass().getName() + ".");
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}
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String text = (String) arguments[0];
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if (log.isDebugEnabled())
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{
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log.debug("tpm_encodeQuotes('" + text + "'), parentPath = " + parentPath);
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}
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final String result = xsltFunctions.encodeQuotes(text);
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return result;
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}
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});
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model.put(QName.createQName(NamespaceService.ALFRESCO_PREFIX, "parseXMLDocument", namespacePrefixResolver),
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new TemplateProcessorMethod()
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{
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public Object exec(final Object[] arguments) throws IOException, SAXException
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{
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if (arguments.length != 1)
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{
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throw new IllegalArgumentException("expected 1 argument to parseXMLDocument. got "
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+ arguments.length);
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}
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if (!(arguments[0] instanceof String))
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{
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throw new ClassCastException("expected arguments[0] to be a " + String.class.getName()
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+ ". got a " + arguments[0].getClass().getName() + ".");
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}
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String path = (String) arguments[0];
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if (log.isDebugEnabled())
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{
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log.debug("parseXMLDocument('" + path + "'), parentPath = " + parentPath);
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}
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Document d = null;
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try
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{
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d = xsltFunctions.parseXMLDocument(parentNode, path);
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}
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catch (Exception ex)
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{
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}
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return d == null ? null : d.getDocumentElement();
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}
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});
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model.put(QName.createQName(NamespaceService.ALFRESCO_PREFIX, "parseXMLDocuments", namespacePrefixResolver),
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new TemplateProcessorMethod()
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{
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public Object exec(final Object[] arguments) throws IOException, SAXException
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{
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if (arguments.length > 2)
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{
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throw new IllegalArgumentException("expected one or two arguments to "
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+ "parseXMLDocuments. got " + arguments.length);
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}
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if (!(arguments[0] instanceof String))
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{
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throw new ClassCastException("expected arguments[0] to be a " + String.class.getName()
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+ ". got a " + arguments[0].getClass().getName() + ".");
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}
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if (arguments.length == 2 && !(arguments[1] instanceof String))
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{
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throw new ClassCastException("expected arguments[1] to be a " + String.class.getName()
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+ ". got a " + arguments[1].getClass().getName() + ".");
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}
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String path = arguments.length == 2 ? (String) arguments[1] : "";
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final String typeName = (String) arguments[0];
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if (log.isDebugEnabled())
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{
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log.debug("tpm_parseXMLDocuments('" + typeName + "','" + path + "'), parentPath = "
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+ parentPath);
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}
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final Map<String, Document> resultMap = xsltFunctions.parseXMLDocuments(typeName, parentNode,
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path);
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if (log.isDebugEnabled())
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{
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log.debug("received " + resultMap.size() + " documents in " + path + " with form name "
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+ typeName);
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}
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// create a root document for rooting all the results. we do this
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// so that each document root element has a common parent node
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// and so that xpath axes work properly
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final Document rootNodeDocument = XMLUtil.newDocument();
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final Element rootNodeDocumentEl = rootNodeDocument.createElementNS(
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NamespaceService.ALFRESCO_URI, NamespaceService.ALFRESCO_PREFIX + ":file_list");
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rootNodeDocumentEl.setAttribute("xmlns:" + NamespaceService.ALFRESCO_PREFIX,
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NamespaceService.ALFRESCO_URI);
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rootNodeDocument.appendChild(rootNodeDocumentEl);
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final List<Node> result = new ArrayList<Node>(resultMap.size());
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for (Map.Entry<String, Document> e : resultMap.entrySet())
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{
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final Element documentEl = e.getValue().getDocumentElement();
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documentEl.setAttribute("xmlns:" + NamespaceService.ALFRESCO_PREFIX,
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NamespaceService.ALFRESCO_URI);
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documentEl.setAttributeNS(NamespaceService.ALFRESCO_URI, NamespaceService.ALFRESCO_PREFIX
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+ ":file_name", e.getKey());
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final Node n = rootNodeDocument.importNode(documentEl, true);
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rootNodeDocumentEl.appendChild(n);
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result.add(n);
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}
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return result.toArray(new Node[result.size()]);
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}
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});
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if (suppliedParams != null)
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{
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for (Map.Entry<String, Serializable> suppliedParam : suppliedParams.entrySet())
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{
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model.put(QName.createQName(suppliedParam.getKey()), suppliedParam.getValue());
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}
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}
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// add the xml document
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model.put(XSLTProcessor.ROOT_NAMESPACE, XMLUtil.parse(sourceNode, contentService));
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return model;
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}
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/**
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* @param nodeRef
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* @return
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* @throws FileNotFoundException
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*/
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private String getPath(NodeRef nodeRef)
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{
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StringBuilder sb = new StringBuilder();
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try
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{
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List<FileInfo> parentFileInfoList = fileFolderService.getNamePath(null, nodeRef);
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for (FileInfo fileInfo : parentFileInfoList)
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{
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sb.append('/');
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sb.append(fileInfo.getName());
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}
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}
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catch (FileNotFoundException ex)
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{
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log.info("Unexpected problem: error while calculating path to node " + nodeRef, ex);
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}
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String path = sb.toString();
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return path;
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}
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/*
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* @seeorg.alfresco.repo.rendition.executer.AbstractRenderingEngine# getParameterDefinitions()
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*/
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@Override
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protected Collection<ParameterDefinition> getParameterDefinitions()
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{
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Collection<ParameterDefinition> paramList = super.getParameterDefinitions();
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ParameterDefinitionImpl modelParamDef = new ParameterDefinitionImpl(PARAM_MODEL, DataTypeDefinition.ANY, false,
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getParamDisplayLabel(PARAM_MODEL));
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ParameterDefinitionImpl templateParamDef = new ParameterDefinitionImpl(//
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PARAM_TEMPLATE, DataTypeDefinition.TEXT, false, getParamDisplayLabel(PARAM_TEMPLATE));
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ParameterDefinitionImpl templateNodeParamDef = new ParameterDefinitionImpl(PARAM_TEMPLATE_NODE,
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DataTypeDefinition.NODE_REF, false, getParamDisplayLabel(PARAM_TEMPLATE_NODE));
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ParameterDefinitionImpl templatePathParamDef = new ParameterDefinitionImpl(PARAM_TEMPLATE_PATH,
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DataTypeDefinition.TEXT, false, getParamDisplayLabel(PARAM_TEMPLATE_PATH));
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paramList.add(modelParamDef);
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paramList.add(templateParamDef);
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paramList.add(templateNodeParamDef);
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paramList.add(templatePathParamDef);
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return paramList;
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}
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/**
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* @param templateService
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* the templateService to set
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*/
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public void setTemplateService(TemplateService templateService)
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{
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this.templateService = templateService;
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}
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/**
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* @param xsltFunctions
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* the xsltFunctions to set
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*/
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public void setXsltFunctions(XSLTFunctions xsltFunctions)
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{
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this.xsltFunctions = xsltFunctions;
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}
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/**
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* @param namespacePrefixResolver
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* the namespacePrefixResolver to set
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*/
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public void setNamespacePrefixResolver(NamespacePrefixResolver namespacePrefixResolver)
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{
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this.namespacePrefixResolver = namespacePrefixResolver;
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}
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/**
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* @param fileFolderService
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* the fileFolderService to set
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*/
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public void setFileFolderService(FileFolderService fileFolderService)
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{
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this.fileFolderService = fileFolderService;
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}
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/**
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* @param searchService
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* the searchService to set
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*/
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public void setSearchService(SearchService searchService)
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{
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this.searchService = searchService;
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}
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}
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