Source Code Cross Referenced for AppContainerImpl.java in  » 6.0-JDK-Modules » j2me » com » sun » jumpimpl » isolate » jvmprocess » main » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » 6.0 JDK Modules » j2me » com.sun.jumpimpl.isolate.jvmprocess.main 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * Copyright  1990-2006 Sun Microsystems, Inc. All Rights Reserved.
003:         * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER
004:         *
005:         * This program is free software; you can redistribute it and/or
006:         * modify it under the terms of the GNU General Public License version
007:         * 2 only, as published by the Free Software Foundation.
008:         *
009:         * This program is distributed in the hope that it will be useful, but
010:         * WITHOUT ANY WARRANTY; without even the implied warranty of
011:         * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
012:         * General Public License version 2 for more details (a copy is
013:         * included at /legal/license.txt).
014:         *
015:         * You should have received a copy of the GNU General Public License
016:         * version 2 along with this work; if not, write to the Free Software
017:         * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
018:         * 02110-1301 USA
019:         *
020:         * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
021:         * Clara, CA 95054 or visit www.sun.com if you need additional
022:         * information or have any questions.
023:         */
024:
025:        package com.sun.jumpimpl.isolate.jvmprocess.main;
026:
027:        import com.sun.jump.isolate.jvmprocess.JUMPIsolateProcess;
028:        import com.sun.jump.isolate.jvmprocess.JUMPAppContainer;
029:        import com.sun.jump.isolate.jvmprocess.JUMPAppContainerContext;
030:        import com.sun.jump.common.JUMPApplication;
031:        import com.sun.jump.message.JUMPMessage;
032:        import com.sun.jump.message.JUMPMessageHandler;
033:
034:        import java.io.IOException;
035:        import java.io.File;
036:        import java.lang.reflect.Method;
037:        import java.lang.reflect.InvocationTargetException;
038:        import java.net.URL;
039:        import java.net.MalformedURLException;
040:        import java.util.StringTokenizer;
041:        import sun.misc.CDCAppClassLoader;
042:
043:        /*
044:         * Application Container for the main(String[]) app model.
045:         * 
046:         * FIXME: We should move this class into the cdc/fp/pbp repository
047:         * and compile it there, to be aligned with midp app container in the
048:         * midp repository.  The code needs to be compiled before jump api
049:         * and after jump impl.
050:         */
051:
052:        public class AppContainerImpl extends JUMPAppContainer implements 
053:                Runnable {
054:
055:            private JUMPAppContainerContext context;
056:
057:            public static JUMPAppContainer getInstance(
058:                    JUMPAppContainerContext context) {
059:                return new AppContainerImpl(context);
060:            }
061:
062:            public static final String CLASSPATH_KEY = "MAINApplication_classpath";
063:            public static final String INITIAL_CLASS_KEY = "MAINApplication_initialClass";
064:
065:            private static JUMPApplication currentApp = null;
066:            private String[] args;
067:
068:            /**
069:             * Creates a new instance of JUMPAppContainer
070:             * For main app, there is only one per vm - ignore appId.
071:             */
072:            public AppContainerImpl(JUMPAppContainerContext context) {
073:                this .context = context;
074:            }
075:
076:            /**
077:             * Start the application specific by the JUMPApplication object.
078:             */
079:            public int startApp(JUMPApplication app, String[] mainArgs) {
080:
081:                currentApp = app;
082:                args = mainArgs;
083:
084:                Thread t = new Thread(this );
085:                t.setDaemon(false);
086:                t.start();
087:
088:                context.terminateKeepAliveThread();
089:
090:                return Integer
091:                        .parseInt(app.getProperty(JUMPApplication.ID_KEY));
092:            }
093:
094:            /**
095:             * Invokes the application's main() method.
096:             */
097:            public void run() {
098:
099:                try {
100:                    String className = currentApp
101:                            .getProperty(INITIAL_CLASS_KEY);
102:                    String classPath = currentApp.getProperty(CLASSPATH_KEY);
103:
104:                    StringTokenizer st = new StringTokenizer(classPath,
105:                            File.pathSeparator);
106:                    int count = st.countTokens();
107:                    URL[] pathArray = new URL[count];
108:
109:                    count = 0;
110:
111:                    while (st.hasMoreTokens()) {
112:                        try {
113:                            pathArray[count++] = new File(st.nextToken())
114:                                    .toURL();
115:                        } catch (MalformedURLException e) {
116:                            System.err.println("Caught: " + e);
117:                            pathArray[count] = null;
118:                        }
119:                    }
120:
121:                    CDCAppClassLoader loader = new CDCAppClassLoader(pathArray,
122:                            null);
123:
124:                    try {
125:
126:                        Class[] args1 = { new String[0].getClass() };
127:
128:                        // Main app typically expect zero length array for the main(Str[]) 
129:                        // parameter, instead of null. 
130:                        String[] args2 = (args == null) ? new String[0] : args;
131:
132:                        Class mainClass = loader.loadClass(className);
133:                        Method mainMethod = mainClass.getMethod("main", args1);
134:                        mainMethod.setAccessible(true);
135:                        mainMethod.invoke(null, new Object[] { args2 });
136:
137:                    } catch (InvocationTargetException i) {
138:                        throw i.getTargetException();
139:                    }
140:
141:                } catch (Throwable e) {
142:                    if (e instanceof  Error)
143:                        throw (Error) e;
144:
145:                    e.printStackTrace();
146:                }
147:
148:            }
149:
150:            public void pauseApp(int appId) {
151:                System.out.println("Main AppContainer pausing " + currentApp);
152:            }
153:
154:            public void resumeApp(int appId) {
155:                System.out.println("Main AppContainer resuming " + currentApp);
156:            }
157:
158:            public void destroyApp(int appId, boolean force) {
159:                System.out
160:                        .println("Main AppContainer destroying " + currentApp);
161:
162:                currentApp = null;
163:
164:                context.terminateIsolate();
165:            }
166:
167:            public void handleMessage(JUMPMessage message) {
168:            }
169:
170:        }
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