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16 package org.apache.pluto.portlet.admin.services;
17
18 import java.io.IOException  ;
19 import java.io.InputStream ;
20 import java.io.OutputStreamWriter ;
21 import java.io.PrintWriter ;
22 import java.util.ArrayList ;
23
24 import javax.xml.parsers.DocumentBuilder ;
25 import javax.xml.parsers.DocumentBuilderFactory ;
26 import javax.xml.parsers.ParserConfigurationException ;
27
28 import org.apache.pluto.portlet.admin.PlutoAdminConstants;
29 import org.apache.pluto.portlet.admin.PlutoAdminException;
30 import org.apache.pluto.portlet.admin.PlutoAdminLogger;
31 import org.w3c.dom.Document ;
32 import org.w3c.dom.NodeList ;
33 import org.xml.sax.ErrorHandler ;
34 import org.xml.sax.SAXException ;
35 import org.xml.sax.SAXParseException ;
36
37
44 public class PortletNameFinder {
45
46 public static final String CLASS_NAME = "PortletNameFinder";
47
48 PortletNameFinder() {
49 }
50
51
52 public static ArrayList getPortletNames(InputStream ios) throws Exception {
53 final String METHOD_NAME = "getPortletNames(InputStream)";
54 ArrayList nameList = new ArrayList ();
55 boolean validation = false;
56
57 boolean ignoreWhitespace = false;
58 boolean ignoreComments = false;
59 boolean putCDATAIntoText = false;
60 boolean createEntityRefs = false;
61
62 DocumentBuilderFactory dbf =
63 DocumentBuilderFactory.newInstance();
64
65 dbf.setValidating(validation);
66 dbf.setIgnoringComments(ignoreComments);
67 dbf.setIgnoringElementContentWhitespace(ignoreWhitespace);
68 dbf.setCoalescing(putCDATAIntoText);
69 dbf.setExpandEntityReferences(!createEntityRefs);
70
71
72 DocumentBuilder db = null;
73 try {
74 db = dbf.newDocumentBuilder();
75 } catch (ParserConfigurationException e) {
76 PlutoAdminLogger.logError(CLASS_NAME, METHOD_NAME, e);
77 throw new PlutoAdminException(e);
78 }
79
80 OutputStreamWriter errorWriter =
81 new OutputStreamWriter (System.err, PlutoAdminConstants.ENCODING);
82 db.setErrorHandler(
83 new MyErrorHandler(new PrintWriter (errorWriter, true)));
84
85 Document doc = null;
86 try {
87 doc = db.parse(ios);
88 } catch (SAXException e) {
89 PlutoAdminLogger.logError(CLASS_NAME, METHOD_NAME, e);
90 throw new PlutoAdminException(e);
91 } catch (IOException e) {
92 PlutoAdminLogger.logError(CLASS_NAME, METHOD_NAME, e);
93 throw new PlutoAdminException(e);
94 }
95
96 NodeList portletNames = doc.getElementsByTagName("portlet-name");
97 if (null != portletNames)
98 {
99 for (int i = 0; i < portletNames.getLength(); i++) {
100 if (null != portletNames.item(i).getChildNodes().item(0))
101 {
102 String portletName = portletNames.item(i).getChildNodes().item(0).getNodeValue();
103 nameList.add(portletName);
104 }
105 }
106 }
107 return nameList;
108 }
109
110
111
112
113
120 private static class MyErrorHandler implements ErrorHandler {
121 private static final String INNER_CLASS_NAME = "MyErrorHandler";
122 PrintWriter out = null;
123 MyErrorHandler(PrintWriter p_out) {
124 out = p_out;
125 }
126
127
128 private String getParseExceptionInfo(SAXParseException e) {
129 String systemId = e.getSystemId();
130 if (systemId == null) {
131 systemId = "null";
132 }
133 String info = "URI=" + systemId +
134 " Line=" + e.getLineNumber() +
135 ": " + e.getMessage();
136 return info;
137 }
138
139
140 public void warning(SAXParseException e) throws SAXException {
141 String METHOD_NAME = "warning(e)";
142 String msg = "Warning: " + getParseExceptionInfo(e);
143 PlutoAdminLogger.logWarn(INNER_CLASS_NAME, METHOD_NAME, msg);
144 }
145
146 public void error(SAXParseException e) throws SAXException {
147 String METHOD_NAME = "error(e)";
148 String message = "Error: " + getParseExceptionInfo(e);
149 PlutoAdminLogger.logError(INNER_CLASS_NAME, METHOD_NAME, message, e);
150 throw new SAXException (message);
151 }
152
153 public void fatalError(SAXParseException e) throws SAXException {
154 String METHOD_NAME = "fatalError(e)";
155 String message = "Fatal Error: " + getParseExceptionInfo(e);
156 PlutoAdminLogger.logError(INNER_CLASS_NAME, METHOD_NAME, message, e);
157 throw new SAXException (message);
158 }
159 }
160
161
162
163 }
164 |
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