Created a simple example using the DOM Level 2 API for testing/demonstrating FOP's

DOM Document-processing capabilities.

git-svn-id: https://svn.apache.org/repos/asf/xmlgraphics/fop/trunk@196796 13f79535-47bb-0310-9956-ffa450edef68

diff --git a/examples/embedding/java/embedding/ExampleDOM2PDF.java b/examples/embedding/java/embedding/ExampleDOM2PDF.java
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+/*
+ * $Id
+ * ============================================================================
+ *                    The Apache Software License, Version 1.1
+ * ============================================================================
+ * 
+ * Copyright (C) 1999-2003 The Apache Software Foundation. All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without modifica-
+ * tion, are permitted provided that the following conditions are met:
+ * 
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ * 
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ * 
+ * 3. The end-user documentation included with the redistribution, if any, must
+ *    include the following acknowledgment: "This product includes software
+ *    developed by the Apache Software Foundation (http://www.apache.org/)."
+ *    Alternately, this acknowledgment may appear in the software itself, if
+ *    and wherever such third-party acknowledgments normally appear.
+ * 
+ * 4. The names "FOP" and "Apache Software Foundation" must not be used to
+ *    endorse or promote products derived from this software without prior
+ *    written permission. For written permission, please contact
+ *    apache@apache.org.
+ * 
+ * 5. Products derived from this software may not be called "Apache", nor may
+ *    "Apache" appear in their name, without prior written permission of the
+ *    Apache Software Foundation.
+ * 
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
+ * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * APACHE SOFTWARE FOUNDATION OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLU-
+ * DING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ============================================================================
+ * 
+ * This software consists of voluntary contributions made by many individuals
+ * on behalf of the Apache Software Foundation and was originally created by
+ * James Tauber <jtauber@jtauber.com>. For more information on the Apache
+ * Software Foundation, please see <http://www.apache.org/>.
+ */ 
+package embedding;
+
+//Java
+import java.io.File;
+import java.io.IOException;
+import java.io.OutputStream;
+
+//JAXP
+import javax.xml.parsers.DocumentBuilderFactory;
+import javax.xml.parsers.DocumentBuilder;
+
+// DOM
+import org.w3c.dom.Document;
+import org.w3c.dom.Element;
+import org.w3c.dom.NamedNodeMap;
+import org.w3c.dom.Node;
+import org.w3c.dom.Text;
+
+// Avalon
+import org.apache.avalon.framework.ExceptionUtil;
+import org.apache.avalon.framework.logger.ConsoleLogger;
+import org.apache.avalon.framework.logger.Logger;
+
+//FOP
+import org.apache.fop.apps.Driver;
+import org.apache.fop.apps.FOPException;
+
+/**
+ * This class demonstrates the conversion of a DOM Document to PDF
+ * using JAXP (XSLT) and FOP (XSL-FO).
+ */
+public class ExampleDOM2PDF {
+
+    /** xsl-fo namespace URI */
+    protected static String foNS = "http://www.w3.org/1999/XSL/Format";
+
+    /**
+     * Converts a DOM Document to a PDF file using FOP.
+     * @param doc the DOM Document
+     * @param pdf the target PDF file
+     * @throws IOException In case of an I/O problem
+     * @throws FOPException In case of a FOP problem
+     */
+    public void convertDOM2PDF(Document xslfoDoc, File pdf) 
+                throws IOException, FOPException {
+        //Construct driver
+        Driver driver = new Driver();
+        
+        //Setup logger
+        Logger logger = new ConsoleLogger(ConsoleLogger.LEVEL_INFO);
+        driver.enableLogging(logger);
+        driver.initialize();
+        
+        //Setup Renderer (output format)        
+        driver.setRenderer(Driver.RENDER_PDF);
+        
+        //Setup output
+        OutputStream out = new java.io.FileOutputStream(pdf);
+        out = new java.io.BufferedOutputStream(out);
+        
+        try {
+            driver.setOutputStream(out);
+            driver.render(xslfoDoc);
+        } finally {
+            out.close();
+        }
+    }
+
+    /**
+     * Main method.
+     * @param args command-line arguments
+     */
+    public static void main(String[] args) {
+        try {
+            System.out.println("FOP ExampleDOM2PDF\n");
+            
+            //Setup directories
+            File baseDir = new File(".");
+            File outDir = new File(baseDir, "out");
+            outDir.mkdirs();
+            
+            //Setup output file
+            File pdffile = new File(outDir, "ResultDOM2PDF.pdf");
+            System.out.println("PDF Output File: " + pdffile);
+            System.out.println();
+            
+            // Create a sample XSL-FO DOM document
+            Document foDoc = null;
+            Element root = null, ele1 = null, ele2 = null, ele3 = null;
+            Text elementText = null;
+            
+            DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
+            dbf.setNamespaceAware(true);
+            DocumentBuilder db = dbf.newDocumentBuilder();
+            foDoc = db.newDocument();
+            
+            root = foDoc.createElementNS(foNS, "fo:root");
+            foDoc.appendChild(root);
+            
+            ele1 = foDoc.createElementNS(foNS, "fo:layout-master-set");
+            root.appendChild(ele1);
+            ele2 = foDoc.createElementNS(foNS, "fo:simple-page-master");
+            ele1.appendChild(ele2);
+            ele2.setAttributeNS(null, "master-name", "letter");
+            ele2.setAttributeNS(null, "page-height", "11in");
+            ele2.setAttributeNS(null, "page-width", "8.5in");
+            ele2.setAttributeNS(null, "margin-top", "1in");
+            ele2.setAttributeNS(null, "margin-bottom", "1in");
+            ele2.setAttributeNS(null, "margin-left", "1in");
+            ele2.setAttributeNS(null, "margin-right", "1in");
+            ele3 = foDoc.createElementNS(foNS, "fo:region-body");
+            ele2.appendChild(ele3);
+            ele1 = foDoc.createElementNS(foNS, "fo:page-sequence");
+            root.appendChild(ele1);
+            ele1.setAttributeNS(null, "master-reference", "letter");
+            ele2 = foDoc.createElementNS(foNS, "fo:flow");
+            ele1.appendChild(ele2);
+            ele2.setAttributeNS(null, "flow-name", "xsl-region-body");
+            AddElement(ele2, "fo:block", "Hello World!");
+            
+            ExampleDOM2PDF app = new ExampleDOM2PDF();
+            app.convertDOM2PDF(foDoc, pdffile);
+            
+            System.out.println("Success!");
+        } catch (Exception e) {
+            System.err.println(ExceptionUtil.printStackTrace(e));
+            System.exit(-1);
+        }
+    }
+
+       protected static void AddElement(Node parent, String newNodeName, 
+        String textVal)
+       {
+               if (textVal == null) return;  // use only with text nodes
+               Element newElement = 
+            parent.getOwnerDocument().createElementNS(foNS, newNodeName);
+               Text elementText = parent.getOwnerDocument().createTextNode(textVal);
+               newElement.appendChild(elementText);
+               parent.appendChild(newElement);
+       }
+}
+