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1
23
24 package com.sun.enterprise.tools.admingui.tree;
25
26 import org.xml.sax.*;
27 import org.xml.sax.helpers.*;
28 import org.w3c.dom.*;
29 import org.w3c.dom.Document  ;
30
31 import javax.xml.parsers.*;
32 import javax.xml.transform.*;
33 import javax.xml.transform.dom.DOMSource ;
34 import javax.xml.transform.stream.StreamResult ;
35 import javax.servlet.*;
36
37 import com.iplanet.jato.RequestContext;
38 import com.sun.enterprise.tools.guiframework.view.ViewXMLEntityResolver;
39
40 import java.io.InputStream ;
41 import java.io.OutputStreamWriter ;
42 import java.io.PrintWriter ;
43 import java.util.HashMap ;
44
45 import com.sun.enterprise.tools.admingui.util.Util;
46 import com.sun.enterprise.tools.admingui.util.MBeanUtil;
47
48 public class TreeReader {
49 private static final String OUTPUT_ENCODING = "UTF-8";
50 private Document doc;
51 private static HashMap nodeClasses = new HashMap ();
52
53 public TreeReader(InputStream is, String dtdURLBase) throws Exception {
54 DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
55 dbf.setNamespaceAware(true);
56 dbf.setValidating(false);
57 dbf.setIgnoringComments(false);
58 dbf.setIgnoringElementContentWhitespace(false);
59 dbf.setCoalescing(false);
60 dbf.setExpandEntityReferences(true);
62
63 DocumentBuilder db = dbf.newDocumentBuilder();
64 db.setEntityResolver(new ViewXMLEntityResolver());
65
66 OutputStreamWriter errorWriter = new OutputStreamWriter (System.err, OUTPUT_ENCODING);
67 db.setErrorHandler(new MyErrorHandler(new PrintWriter (errorWriter, true)));
68 doc = db.parse(is, dtdURLBase);
69 }
70
71
74 public static boolean process(Node n, IndexTreeModel treeModel, IndexTreeNode parent) {
75 boolean hasChildren = false;
76 for (Node child = n.getFirstChild(); child != null; child = child.getNextSibling()) {
77 String nodeName = child.getNodeName();
78 if (nodeName.equalsIgnoreCase("Node")) {
79 IndexTreeNode treeNode = addToTree((Element)child, treeModel, parent);
80 process(child, treeModel, treeNode);
81 hasChildren = true;
82 }
83 else if (nodeName.equalsIgnoreCase("DynamicNode")) {
84 parent.setDynamicChild((Element)child);
85 hasChildren = true;
86 }
87 else if (nodeName.equalsIgnoreCase("TreeNodeType")) {
88 process((Element)child);
89 }
90 }
91 return hasChildren;
92 }
93
94 private static void process(Element treeNodeType) {
95 String name = treeNodeType.getAttribute("name");
96 String clazz = treeNodeType.getAttribute("treeNodeClass");
97 nodeClasses.put(name, clazz);
98 }
99
100 public static String getClass(String nodeClassType) {
101 return (String ) nodeClasses.get(nodeClassType);
102 }
103
104 private static IndexTreeNode addToTree(Element node, IndexTreeModel treeModel, IndexTreeNode parent) {
105 String name = node.getAttribute("name"); if (name.startsWith("$")) {
107 int i = name.indexOf('#');
108 if (i > 0) {
109 String mbeanName = name.substring(1,i);
110 String attrName = name.substring(i+1, name.length());
111 name = (String )MBeanUtil.getAttribute(mbeanName, attrName);
112 }
113 }
117 String nodeType = node.getAttribute("type");
118 if (nodeType == null)
119 nodeType = treeModel.CONTAINER;
120
121 if ((parent == null && nodeType.equalsIgnoreCase(treeModel.ROOT) == false) ||
122 (parent != null && nodeType.equalsIgnoreCase(treeModel.ROOT))) {
123 throw new RuntimeException ("The first node declared must be of type \"root\" and\n" +
124 "there can be only one root node.");
125 }
126
127 IndexTreeNode treeNode =
128 IndexTreeNode.createNode(node, parent, nodeType, name, treeModel);
129 return treeNode;
130 }
131
132 public void populate(IndexTreeModel treeModel) throws Exception {
133 for (Node child = doc.getFirstChild(); child != null;
134 child = child.getNextSibling()) {
135 String nodeName = child.getNodeName();
136 if (nodeName.equalsIgnoreCase("Tree"))
137 process(child, treeModel, null);
138 }
139 }
140
141 private static class MyErrorHandler implements ErrorHandler {
143
144 private PrintWriter out;
145
146 MyErrorHandler(PrintWriter out) {
147 this.out = out;
148 }
149
150
153 private String getParseExceptionInfo(SAXParseException spe) {
154 String systemId = spe.getSystemId();
155 if (systemId == null) {
156 systemId = "null";
157 }
158 String info = "URI=" + systemId + " Line=" + spe.getLineNumber() + ": " + spe.getMessage();
159 return info;
160 }
161
162
165 public void warning(SAXParseException spe) throws SAXException {
166 out.println("Warning: " + getParseExceptionInfo(spe));
167 }
168
169 public void error(SAXParseException spe) throws SAXException {
170 String message = "Error: " + getParseExceptionInfo(spe);
171 throw new SAXException(message);
172 }
173
174 public void fatalError(SAXParseException spe) throws SAXException {
175 String message = "Fatal Error: " + getParseExceptionInfo(spe);
176 throw new SAXException(message);
177 }
178 }
179 }
180 |
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