?? workflowserializer.java
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/* * Copyright (c) 2002-2003 by OpenSymphony * All rights reserved. */package com.opensymphony.workflow.loader;import org.apache.velocity.Template;import org.apache.velocity.VelocityContext;import org.apache.velocity.app.VelocityEngine;import java.io.ByteArrayOutputStream;import java.io.OutputStreamWriter;/** * DOCUMENT ME! * * @author $author$ * @version $Revision: 1.2 $ */public class WorkflowSerializer { //~ Instance fields //////////////////////////////////////////////////////// private VelocityEngine engine; //~ Methods //////////////////////////////////////////////////////////////// public byte[] generateWorkflowXML(WorkflowDescriptor wf) throws Exception { initVelocity(); ByteArrayOutputStream baos = new ByteArrayOutputStream(); OutputStreamWriter writer = new OutputStreamWriter(baos); Template template = engine.getTemplate("workflowtemplate.vm"); VelocityContext ctx = new VelocityContext(); ctx.put("workflow", wf); template.merge(ctx, writer); writer.flush(); baos.flush(); return baos.toByteArray(); } protected void initVelocity() throws Exception { if (engine == null) { engine = new VelocityEngine(); engine.setProperty("resource.loader", "class"); engine.setProperty("class.resource.loader.class", "org.apache.velocity.runtime.resource.loader.ClasspathResourceLoader"); engine.init(); } }}
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