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commiting this back in because it has an R state and i don't know what that is and it scares me.

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git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/BRANCHES/WCM-DEV2/root@4226 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261
This commit is contained in:
Ariel Backenroth
2006-10-26 04:14:23 +00:00
parent 249ddd00c8
commit 0b3147e8c2
1 changed files with 48 additions and 30 deletions
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78
source/java/org/alfresco/web/forms/XSLTRenderingEngine.java
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@@ -21,20 +21,17 @@ import java.net.URI;
import java.net.URISyntaxException;
import java.util.*;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.transform.Result;
import javax.xml.transform.Source;
import javax.xml.transform.Templates;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerConfigurationException;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.URIResolver;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.sax.SAXTransformerFactory;
import javax.xml.transform.sax.TransformerHandler;
import javax.xml.transform.stream.StreamResult;
import javax.xml.transform.stream.StreamSource;
import org.alfresco.model.WCMModel;
import org.alfresco.service.cmr.repository.ContentService;
import org.alfresco.service.cmr.repository.NodeRef;
import org.alfresco.service.cmr.repository.NodeService;
@@ -51,7 +48,7 @@ import org.xml.sax.SAXException;
import org.apache.bsf.BSFManager;
/**
* A rendering engine which uses xsl templates to generate renditions of
* A rendering engine which uses xsl templates to render renditions of
* form instance data.
*
* @author Ariel Backenroth
@@ -69,7 +66,7 @@ public class XSLTRenderingEngine
super(nodeRef, nodeService, contentService);
}
private static String toAVMPath(final ExpressionContext ec, String path)
protected static String toAVMPath(final ExpressionContext ec, String path)
throws TransformerException
{
final XObject o = ec.getVariableOrParam(new QName(ALFRESCO_NS, ALFRESCO_NS_PREFIX, "parent_path"));
@@ -227,69 +224,89 @@ public class XSLTRenderingEngine
return XSLTRenderingEngine.toAVMPath(ec, path);
}
private void addScript(final Document d)
/**
* Adds a script element to the xsl which makes static methods on this
* object available to the xsl tempalte.
*
* @param xslTemplate the xsl template
*/
protected void addScript(final Document xslTemplate)
{
final Element docEl = d.getDocumentElement();
final Element docEl = xslTemplate.getDocumentElement();
final String XALAN_NS = "http://xml.apache.org/xalan";
final String XALAN_NS_PREFIX = "xalan";
docEl.setAttribute("xmlns:" + XALAN_NS_PREFIX, XALAN_NS);
docEl.setAttribute("xmlns:" + ALFRESCO_NS_PREFIX, ALFRESCO_NS);
final Element compEl = d.createElementNS(XALAN_NS, XALAN_NS_PREFIX + ":component");
final Element compEl = xslTemplate.createElementNS(XALAN_NS, XALAN_NS_PREFIX + ":component");
compEl.setAttribute("prefix", "alfresco");
docEl.appendChild(compEl);
final Element scriptEl = d.createElementNS(XALAN_NS, XALAN_NS_PREFIX + ":script");
final Element scriptEl = xslTemplate.createElementNS(XALAN_NS, XALAN_NS_PREFIX + ":script");
scriptEl.setAttribute("lang", "javaclass");
scriptEl.setAttribute("src", XALAN_NS_PREFIX + "://" + this.getClass().getName());
compEl.appendChild(scriptEl);
}
private void addParameters(final Map<String, String> parameters,
final Document xslDocument)
/**
* Adds the specified parameters to the xsl template as variables within the
* alfresco namespace.
*
* @param parameters the variables to place within the xsl template
* @param xslTemplate the xsl template
*/
protected void addParameters(final Map<String, String> parameters,
final Document xslTemplate)
{
final Element docEl = xslDocument.getDocumentElement();
final Element docEl = xslTemplate.getDocumentElement();
final String XSL_NS = docEl.getNamespaceURI();
final String XSL_NS_PREFIX = docEl.getPrefix();
for (Map.Entry<String, String> e : parameters.entrySet())
{
final Element el = xslDocument.createElementNS(XSL_NS, XSL_NS_PREFIX + ":variable");
final Element el = xslTemplate.createElementNS(XSL_NS, XSL_NS_PREFIX + ":variable");
el.setAttribute("name", ALFRESCO_NS_PREFIX + ':' + e.getKey());
el.appendChild(xslDocument.createTextNode(e.getValue()));
el.appendChild(xslTemplate.createTextNode(e.getValue()));
docEl.insertBefore(el, docEl.getFirstChild());
}
}
public void generate(final Document xmlContent,
final Map<String, String> parameters,
final Writer out)
public void render(final Document formInstanceData,
final Map<String, String> parameters,
final OutputStream out)
throws IOException,
RenderingEngine.RenderingException
{
this.render(new DOMSource(formInstanceData), parameters, new StreamResult(out));
}
protected void render(final Source formInstanceDataSource,
final Map<String, String> parameters,
final Result result)
throws IOException,
RenderingEngine.RenderingException
{
System.setProperty("org.apache.xalan.extensions.bsf.BSFManager",
BSFManager.class.getName());
final TransformerFactory tf = TransformerFactory.newInstance();
final FormsService ts = FormsService.getInstance();
Document xslDocument = null;
Document xslTemplate = null;
try
{
xslDocument = ts.parseXML(this.getNodeRef());
xslTemplate = ts.parseXML(this.getNodeRef());
}
catch (final SAXException sax)
{
throw new RenderingEngine.RenderingException(sax);
}
this.addScript(xslDocument);
this.addParameters(parameters, xslDocument);
final DOMSource source = new DOMSource(xslDocument);
this.addScript(xslTemplate);
this.addParameters(parameters, xslTemplate);
Transformer t = null;
try
{
final Templates templates = tf.newTemplates(source);
t = templates.newTransformer();
final TransformerFactory tf = TransformerFactory.newInstance();
t = tf.newTransformer(new DOMSource(xslTemplate));
t.setParameter("versionParam", "2.0");
}
catch (TransformerConfigurationException tce)
{
@@ -314,7 +331,9 @@ public class XSLTRenderingEngine
}
catch (URISyntaxException e)
{
throw new TransformerException("unable to create uri " + sandBoxUrl + href, e);
throw new TransformerException("unable to create uri " +
sandBoxUrl + href,
e);
}
try
{
@@ -331,10 +350,9 @@ public class XSLTRenderingEngine
}
});
final StreamResult result = new StreamResult(out);
try
{
t.transform(new DOMSource(xmlContent), result);
t.transform(formInstanceDataSource, result);
}
catch (TransformerException e)
{