Source Code Cross Referenced for JResourceManagerWrapper.java in  » J2EE » JOnAS-4.8.6 » org » objectweb » jonas » security » lib » wrapper » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » J2EE » JOnAS 4.8.6 » org.objectweb.jonas.security.lib.wrapper 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


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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