- /*
- * The Apache Software License, Version 1.1
- *
- *
- * Copyright (c) 2002 The Apache Software Foundation. All rights
- * reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, 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 "Xalan" 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 (INCLUDING, 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 based on software copyright (c) 2000, Lotus
- * Development Corporation., http://www.lotus.com. For more
- * information on the Apache Software Foundation, please see
- * <http://www.apache.org/>.
- */
-
- package org.apache.xml.utils;
-
- import java.util.Enumeration;
- import java.util.Hashtable;
- import java.util.StringTokenizer;
- import java.util.Vector;
-
- import org.w3c.dom.Document;
- import org.w3c.dom.Element;
- import org.w3c.dom.Node;
-
- /**
- * <meta name="usage" content="general"/>
- * Simple static utility to convert Hashtable to a Node.
- *
- * Please maintain JDK 1.1.x compatibility; no Collections!
- *
- * @see org.apache.xalan.xslt.EnvironmentCheck
- * @see org.apache.xalan.lib.Extensions
- * @author shane_curcuru@us.ibm.com
- * @version $Id: Hashtree2Node.java,v 1.1 2002/06/21 15:39:34 curcuru Exp $
- */
- public abstract class Hashtree2Node
- {
-
- /**
- * Convert a Hashtable into a Node tree.
- *
- * <p>The hash may have either Hashtables as values (in which
- * case we recurse) or other values, in which case we print them
- * as <item> elements, with a 'key' attribute with the value
- * of the key, and the element contents as the value.</p>
- *
- * <p>If args are null we simply return without doing anything.
- * If we encounter an error, we will attempt to add an 'ERROR'
- * Element with exception info; if that doesn't work we simply
- * return without doing anything else byt printStackTrace().</p>
- *
- * @param hash to get info from (may have sub-hashtables)
- * @param name to use as parent element for appended node
- * futurework could have namespace and prefix as well
- * @param container Node to append our report to
- * @param factory Document providing createElement, etc. services
- */
- public static void appendHashToNode(Hashtable hash, String name,
- Node container, Document factory)
- {
- // Required arguments must not be null
- if ((null == container) || (null == factory) || (null == hash))
- {
- return;
- }
-
- // name we will provide a default value for
- String elemName = null;
- if ((null == name) || ("".equals(name)))
- elemName = "appendHashToNode";
- else
- elemName = name;
-
- try
- {
- Element hashNode = factory.createElement(elemName);
- container.appendChild(hashNode);
-
- Enumeration enum = hash.keys();
- Vector v = new Vector();
-
- while (enum.hasMoreElements())
- {
- Object key = enum.nextElement();
- String keyStr = key.toString();
- Object item = hash.get(key);
-
- if (item instanceof Hashtable)
- {
- // Ensure a pre-order traversal; add this hashes
- // items before recursing to child hashes
- // Save name and hash in two steps
- v.addElement(keyStr);
- v.addElement((Hashtable) item);
- }
- else
- {
- try
- {
- // Add item to node
- Element node = factory.createElement("item");
- node.setAttribute("key", keyStr);
- node.appendChild(factory.createTextNode((String)item));
- hashNode.appendChild(node);
- }
- catch (Exception e)
- {
- Element node = factory.createElement("item");
- node.setAttribute("key", keyStr);
- node.appendChild(factory.createTextNode("ERROR: Reading " + key + " threw: " + e.toString()));
- hashNode.appendChild(node);
- }
- }
- }
-
- // Now go back and do the saved hashes
- enum = v.elements();
- while (enum.hasMoreElements())
- {
- // Retrieve name and hash in two steps
- String n = (String) enum.nextElement();
- Hashtable h = (Hashtable) enum.nextElement();
-
- appendHashToNode(h, n, hashNode, factory);
- }
- }
- catch (Exception e2)
- {
- // Ooops, just bail (suggestions for a safe thing
- // to do in this case appreciated)
- e2.printStackTrace();
- }
- }
- }