001: /**
002: * JOnAS: Java(TM) Open Application Server
003: * Copyright (C) 1999 Bull S.A.
004: * Contact: jonas-team@objectweb.org
005: *
006: * This library is free software; you can redistribute it and/or
007: * modify it under the terms of the GNU Lesser General Public
008: * License as published by the Free Software Foundation; either
009: * version 2.1 of the License, or any later version.
010: *
011: * This library is distributed in the hope that it will be useful,
012: * but WITHOUT ANY WARRANTY; without even the implied warranty of
013: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
014: * Lesser General Public License for more details.
015: *
016: * You should have received a copy of the GNU Lesser General Public
017: * License along with this library; if not, write to the Free Software
018: * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
019: * USA
020: *
021: * --------------------------------------------------------------------------
022: * $Id: JResourceManagerWrapper.java 4840 2004-05-28 14:02:57Z sauthieg $
023: * --------------------------------------------------------------------------
024: */package org.objectweb.jonas.security.lib.wrapper;
025:
026: import java.io.Reader;
027: import java.lang.reflect.InvocationTargetException;
028: import java.lang.reflect.Method;
029:
030: import org.objectweb.jonas.security.JResources;
031: import org.objectweb.jonas.security.SecurityServiceException;
032: import org.objectweb.jonas.server.LoaderManager;
033:
034: /**
035: * @author Guillaume Sauthier
036: */
037: public class JResourceManagerWrapper {
038:
039: /**
040: * JResourcesManager instance
041: */
042: private static Object managerInstance = null;
043:
044: /**
045: *
046: */
047: private static Method addResourcesMethod = null;
048:
049: /**
050: * Empty private constructor for Utility Classes
051: */
052: private JResourceManagerWrapper() {
053: }
054:
055: /**
056: * Add JResource(s) created from parsing of the reader contents inside the
057: * JResources given instance.
058: * @param jres JResources element where JResource will be addded.
059: * @param reader XML Content Reader
060: * @param xml filename / xml : used in Error messages
061: * @throws SecurityServiceException When parsing fails
062: */
063: public static void addResources(JResources jres, Reader reader,
064: String xml) throws SecurityServiceException {
065: if (managerInstance == null) {
066: managerInstance = getJResourceManagerInstance();
067: }
068:
069: if (addResourcesMethod == null) {
070: addResourcesMethod = getJResourceManagerMethod();
071: }
072:
073: try {
074: addResourcesMethod.invoke(managerInstance, new Object[] {
075: jres, reader, xml });
076: } catch (InvocationTargetException e) {
077: Throwable t = e.getTargetException();
078: if (t instanceof SecurityServiceException) {
079: throw (SecurityServiceException) t;
080: } else if (t instanceof Error) {
081: throw (Error) t;
082: }
083: throw new SecurityServiceException(
084: "Exception during JResourcesManager.addResources invocation",
085: e);
086: } catch (Exception e) {
087: throw new SecurityServiceException(
088: "Exception during JResourcesManager.addResources invocation",
089: e);
090: }
091: }
092:
093: /**
094: * @return Returns the JResourceManager.addResources Method
095: * @throws SecurityServiceException When addResources invocation fails
096: */
097: private static Method getJResourceManagerMethod()
098: throws SecurityServiceException {
099: try {
100: return managerInstance.getClass().getMethod(
101: "addResources",
102: new Class[] { JResources.class, Reader.class,
103: String.class });
104: } catch (Exception e) {
105: throw new SecurityServiceException(
106: "Cannot get JResourcesManager.addResources method",
107: e);
108: }
109: }
110:
111: /**
112: * @return Returns the JResourceManager unique instance.
113: * @throws SecurityServiceException When getInstance invocation fails
114: */
115: private static Object getJResourceManagerInstance()
116: throws SecurityServiceException {
117:
118: LoaderManager lm = LoaderManager.getInstance();
119: try {
120: ClassLoader tools = lm.getToolsLoader();
121:
122: Class jrmClass = tools
123: .loadClass("org.objectweb.jonas.security.lib.JResourceManager");
124: Method m = jrmClass
125: .getMethod("getInstance", new Class[] {});
126: return m.invoke(null, new Object[] {});
127: } catch (InvocationTargetException e) {
128: Throwable t = e.getTargetException();
129: if (t instanceof SecurityServiceException) {
130: throw (SecurityServiceException) t;
131: } else if (t instanceof Error) {
132: throw (Error) t;
133: }
134: throw new SecurityServiceException(
135: "InvocationTargetException during JResourcesManager.getInstance invocation : "
136: + e.getMessage(), e);
137: } catch (Exception e) {
138: throw new SecurityServiceException(
139: "Exception during JResourcesManager.getInstance invocation : "
140: + e.getMessage(), e);
141: }
142: }
143:
144: }
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