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- renaming everything in order to get consistent good terminology for forms.
git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/BRANCHES/WCM-DEV2/root@4182 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261
This commit is contained in:
Ariel Backenroth
286
source/java/org/alfresco/web/forms/XSLTRenderingEngine.java
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286
source/java/org/alfresco/web/forms/XSLTRenderingEngine.java
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/*
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* Copyright (C) 2005 Alfresco, Inc.
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*
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* Licensed under the Mozilla Public License version 1.1
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* with a permitted attribution clause. You may obtain a
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* copy of the License at
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*
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* http://www.alfresco.org/legal/license.txt
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*
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
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* either express or implied. See the License for the specific
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* language governing permissions and limitations under the
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* License.
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*/
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package org.alfresco.web.forms;
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import java.io.*;
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import java.net.URI;
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import java.net.URISyntaxException;
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import java.util.*;
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import javax.xml.parsers.ParserConfigurationException;
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import javax.xml.transform.Source;
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import javax.xml.transform.Templates;
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import javax.xml.transform.Transformer;
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import javax.xml.transform.TransformerConfigurationException;
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import javax.xml.transform.TransformerException;
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import javax.xml.transform.TransformerFactory;
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import javax.xml.transform.URIResolver;
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import javax.xml.transform.dom.DOMSource;
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import javax.xml.transform.sax.SAXTransformerFactory;
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import javax.xml.transform.sax.TransformerHandler;
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import javax.xml.transform.stream.StreamResult;
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import javax.xml.transform.stream.StreamSource;
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import org.alfresco.model.WCMModel;
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import org.alfresco.service.cmr.repository.ContentService;
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import org.alfresco.service.cmr.repository.NodeRef;
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import org.alfresco.service.cmr.repository.NodeService;
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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.apache.xalan.extensions.ExpressionContext;
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import org.apache.xpath.objects.XObject;
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import org.apache.xml.utils.QName;
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import org.w3c.dom.*;
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import org.w3c.dom.traversal.NodeFilter;
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import org.w3c.dom.traversal.NodeIterator;
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import org.xml.sax.SAXException;
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public class XSLTRenderingEngine
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extends AbstractRenderingEngine
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{
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private static final Log LOGGER = LogFactory.getLog(XSLTRenderingEngine.class);
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public XSLTRenderingEngine(final NodeRef nodeRef,
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final NodeService nodeService,
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final ContentService contentService)
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{
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super(nodeRef, nodeService, contentService);
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}
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private static String toAVMPath(final ExpressionContext ec, String path)
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throws TransformerException
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{
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final XObject o = ec.getVariableOrParam(new QName(ALFRESCO_NS, ALFRESCO_NS_PREFIX, "parent_path"));
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return o == null ? null : XSLTRenderingEngine.toAVMPath(o.toString(), path);
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}
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public static Document getXMLDocument(final ExpressionContext ec, final String path)
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throws TransformerException,
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IOException,
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SAXException
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{
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final FormDataFunctions ef = XSLTRenderingEngine.getFormDataFunctions();
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return ef.getXMLDocument(XSLTRenderingEngine.toAVMPath(ec, path));
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}
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public static NodeIterator getXMLDocuments(final ExpressionContext ec,
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final String formName)
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throws TransformerException,
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IOException,
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SAXException
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{
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return XSLTRenderingEngine.getXMLDocuments(ec, formName, "");
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}
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public static NodeIterator getXMLDocuments(final ExpressionContext ec,
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final String formName,
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String path)
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throws TransformerException,
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IOException,
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SAXException
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{
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final FormDataFunctions ef = XSLTRenderingEngine.getFormDataFunctions();
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path = XSLTRenderingEngine.toAVMPath(ec, path);
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final Map<String, Document> resultMap = ef.getXMLDocuments(formName, path);
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LOGGER.debug("received " + resultMap.size() + " documents in " + path);
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final List<Map.Entry<String, Document>> documents =
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new ArrayList<Map.Entry<String, Document>>(resultMap.entrySet());
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return new NodeIterator()
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{
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private int index = 0;
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private boolean detached = false;
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public void detach()
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{
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LOGGER.debug("detaching NodeIterator");
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resultMap.clear();
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documents.clear();
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this.detached = true;
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}
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public boolean getExpandEntityReferences()
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{
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return true;
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}
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public NodeFilter getFilter()
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{
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return new NodeFilter()
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{
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public short acceptNode(final Node n)
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{
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return NodeFilter.FILTER_ACCEPT;
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}
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};
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}
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public Node getRoot()
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{
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LOGGER.error("NodeIterator.getRoot() unexpectedly called");
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throw new UnsupportedOperationException();
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}
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public int getWhatToShow()
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{
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return NodeFilter.SHOW_ALL;
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}
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public Node nextNode()
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throws DOMException
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{
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LOGGER.debug("NodeIterator.nextNode(" + index + ")");
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if (this.detached)
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throw new DOMException(DOMException.INVALID_STATE_ERR, null);
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if (index == documents.size())
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return null;
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return this.getNodeAt(index++);
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}
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public Node previousNode()
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throws DOMException
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{
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LOGGER.debug("NodeIterator.previousNode(" + index + ")");
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if (this.detached)
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throw new DOMException(DOMException.INVALID_STATE_ERR, null);
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if (index == -1)
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return null;
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return this.getNodeAt(index--);
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}
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private Document getNodeAt(int index)
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{
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final Document d = documents.get(index).getValue();
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final Element documentEl = d.getDocumentElement();
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documentEl.setAttribute("xmlns:" + ALFRESCO_NS_PREFIX, ALFRESCO_NS);
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documentEl.setAttributeNS(ALFRESCO_NS,
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ALFRESCO_NS_PREFIX + ":file-name",
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documents.get(index).getKey());
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return d;
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}
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};
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}
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private void addScript(final Document d)
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{
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final Element docEl = d.getDocumentElement();
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final String XALAN_NS = "http://xml.apache.org/xalan";
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final String XALAN_NS_PREFIX = "xalan";
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docEl.setAttribute("xmlns:" + XALAN_NS_PREFIX, XALAN_NS);
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docEl.setAttribute("xmlns:" + ALFRESCO_NS_PREFIX, ALFRESCO_NS);
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final Element compEl = d.createElementNS(XALAN_NS, XALAN_NS_PREFIX + ":component");
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compEl.setAttribute("prefix", "alfresco");
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docEl.appendChild(compEl);
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final Element scriptEl = d.createElementNS(XALAN_NS, XALAN_NS_PREFIX + ":script");
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scriptEl.setAttribute("lang", "javaclass");
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scriptEl.setAttribute("src", XALAN_NS_PREFIX + "://" + this.getClass().getName());
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compEl.appendChild(scriptEl);
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}
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private void addParameters(final Map<String, String> parameters,
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final Document xslDocument)
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{
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final Element docEl = xslDocument.getDocumentElement();
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final String XSL_NS = docEl.getNamespaceURI();
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final String XSL_NS_PREFIX = docEl.getPrefix();
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for (Map.Entry<String, String> e : parameters.entrySet())
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{
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final Element el = xslDocument.createElementNS(XSL_NS, XSL_NS_PREFIX + ":variable");
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el.setAttribute("name", ALFRESCO_NS_PREFIX + ':' + e.getKey());
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el.appendChild(xslDocument.createTextNode(e.getValue()));
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docEl.insertBefore(el, docEl.getFirstChild());
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}
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}
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public void generate(final Document xmlContent,
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final Map<String, String> parameters,
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final Writer out)
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throws IOException,
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RenderingEngine.RenderingException
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{
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// XXXarielb - dirty - fix this
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final String sandBoxUrl = (String)parameters.get("avm_store_url");
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final TransformerFactory tf = TransformerFactory.newInstance();
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final FormsService ts = FormsService.getInstance();
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Document xslDocument = null;
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try
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{
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xslDocument = ts.parseXML(this.getNodeRef());
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}
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catch (final SAXException sax)
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{
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throw new RenderingEngine.RenderingException(sax);
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}
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this.addScript(xslDocument);
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this.addParameters(parameters, xslDocument);
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final DOMSource source = new DOMSource(xslDocument);
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Transformer t = null;
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try
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{
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final Templates templates = tf.newTemplates(source);
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t = templates.newTransformer();
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}
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catch (TransformerConfigurationException tce)
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{
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LOGGER.error(tce);
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throw new RenderingEngine.RenderingException(tce);
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}
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t.setURIResolver(new URIResolver()
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{
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public Source resolve(final String href, final String base)
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throws TransformerException
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{
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URI uri = null;
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try
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{
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uri = new URI(sandBoxUrl + href);
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}
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catch (URISyntaxException e)
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{
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throw new TransformerException("unable to create uri " + sandBoxUrl + href, e);
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}
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try
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{
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LOGGER.debug("loading " + uri);
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final Document d = ts.parseXML(uri.toURL().openStream());
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LOGGER.debug("loaded " + ts.writeXMLToString(d));
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return new DOMSource(d);
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}
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catch (Exception e)
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{
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LOGGER.warn(e);
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throw new TransformerException("unable to load " + uri, e);
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}
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}
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});
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final StreamResult result = new StreamResult(out);
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try
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{
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t.transform(new DOMSource(xmlContent), result);
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}
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catch (TransformerException e)
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{
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LOGGER.error(e.getMessageAndLocation());
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throw new RenderingEngine.RenderingException(e);
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}
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}
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}
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