[jboss-cvs] JBoss Messaging SVN: r6748 - in trunk: examples/jms and 7 other directories.

jboss-cvs-commits at lists.jboss.org jboss-cvs-commits at lists.jboss.org
Tue May 12 15:43:17 EDT 2009


Author: jmesnil
Date: 2009-05-12 15:43:17 -0400 (Tue, 12 May 2009)
New Revision: 6748

Added:
   trunk/examples/jms/jaas/
   trunk/examples/jms/jaas/build.xml
   trunk/examples/jms/jaas/server0/
   trunk/examples/jms/jaas/server0/client-jndi.properties
   trunk/examples/jms/jaas/server0/jbm-configuration.xml
   trunk/examples/jms/jaas/server0/jbm-jboss-beans.xml
   trunk/examples/jms/jaas/server0/jbm-jms.xml
   trunk/examples/jms/jaas/server0/jbm-queues.xml
   trunk/examples/jms/jaas/src/
   trunk/examples/jms/jaas/src/org/
   trunk/examples/jms/jaas/src/org/jboss/
   trunk/examples/jms/jaas/src/org/jboss/jms/
   trunk/examples/jms/jaas/src/org/jboss/jms/example/
   trunk/examples/jms/jaas/src/org/jboss/jms/example/ExampleCallbackHandler.java
   trunk/examples/jms/jaas/src/org/jboss/jms/example/ExampleConfiguration.java
   trunk/examples/jms/jaas/src/org/jboss/jms/example/ExampleLoginModule.java
   trunk/examples/jms/jaas/src/org/jboss/jms/example/JAASExample.java
Modified:
   trunk/.classpath
Log:
JAAS example

Modified: trunk/.classpath
===================================================================
--- trunk/.classpath	2009-05-12 17:49:33 UTC (rev 6747)
+++ trunk/.classpath	2009-05-12 19:43:17 UTC (rev 6748)
@@ -34,6 +34,7 @@
 	<classpathentry kind="src" path="examples/jms/http-transport/src"/>
 	<classpathentry kind="src" path="examples/jms/instantiate-connection-factory/src"/>
 	<classpathentry kind="src" path="examples/jms/interceptor/src"/>
+	<classpathentry kind="src" path="examples/jms/jaas/src"/>
 	<classpathentry kind="src" path="examples/jms/jmx/src"/>
 	<classpathentry kind="src" path="examples/jms/large-message/src"/>
 	<classpathentry kind="src" path="examples/jms/last-value-queue/src"/>


Property changes on: trunk/examples/jms/jaas
___________________________________________________________________
Name: svn:ignore
   + build
logs


Added: trunk/examples/jms/jaas/build.xml
===================================================================
--- trunk/examples/jms/jaas/build.xml	                        (rev 0)
+++ trunk/examples/jms/jaas/build.xml	2009-05-12 19:43:17 UTC (rev 6748)
@@ -0,0 +1,48 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE project [
+      <!ENTITY libraries SYSTEM "../../../thirdparty/libraries.ent">
+      ]>
+
+<!-- =========================================================================================== -->
+<!--                                                                                             -->
+<!-- JBoss, Home of Professional Open Source                                                     -->
+<!-- Copyright 2005, JBoss Inc., and individual contributors as indicated                        -->
+<!-- by the @authors tag. See the copyright.txt in the distribution for a                        -->
+<!-- full listing of individual contributors.                                                    -->
+<!--                                                                                             -->
+<!-- This is free software; you can redistribute it and/or modify it                             -->
+<!-- under the terms of the GNU Lesser General Public License as                                 -->
+<!-- published by the Free Software Foundation; either version 2.1 of                            -->
+<!-- the License, or (at your option) any later version.                                         -->
+<!--                                                                                             -->
+<!-- This software is distributed in the hope that it will be useful,                            -->
+<!-- but WITHOUT ANY WARRANTY; without even the implied warranty of                              -->
+<!-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU                            -->
+<!-- Lesser General Public License for more details.                                             -->
+<!--                                                                                             -->
+<!-- You should have received a copy of the GNU Lesser General Public                            -->
+<!-- License along with this software; if not, write to the Free                                 -->
+<!-- Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA                          -->
+<!-- 02110-1301 USA, or see the FSF site: http://www.fsf.org.                                    -->
+<!--                                                                                             -->
+<!-- =========================================================================================== -->
+
+
+<project default="run" name="JBoss Messaging JAAS Queue Example">
+
+   <import file="../common/build.xml"/>
+
+   <target name="run">
+      <antcall target="runExample">
+         <param name="example.classname" value="org.jboss.jms.example.JAASExample"/>
+      </antcall>
+   </target>
+
+   <target name="runRemote">
+      <antcall target="runExample">
+         <param name="example.classname" value="org.jboss.jms.example.QueueExample"/>
+         <param name="jbm.example.runServer" value="false"/>
+      </antcall>
+   </target>
+
+</project>


Property changes on: trunk/examples/jms/jaas/server0
___________________________________________________________________
Name: svn:ignore
   + data
logs


Added: trunk/examples/jms/jaas/server0/client-jndi.properties
===================================================================
--- trunk/examples/jms/jaas/server0/client-jndi.properties	                        (rev 0)
+++ trunk/examples/jms/jaas/server0/client-jndi.properties	2009-05-12 19:43:17 UTC (rev 6748)
@@ -0,0 +1,3 @@
+java.naming.factory.initial=org.jnp.interfaces.NamingContextFactory
+java.naming.provider.url=jnp://localhost:1099
+java.naming.factory.url.pkgs=org.jboss.naming:org.jnp.interfaces

Added: trunk/examples/jms/jaas/server0/jbm-configuration.xml
===================================================================
--- trunk/examples/jms/jaas/server0/jbm-configuration.xml	                        (rev 0)
+++ trunk/examples/jms/jaas/server0/jbm-configuration.xml	2009-05-12 19:43:17 UTC (rev 6748)
@@ -0,0 +1,26 @@
+<configuration xmlns="urn:jboss:messaging"
+            xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+            xsi:schemaLocation="urn:jboss:messaging ../schemas/jbm-configuration.xsd">
+
+   <!-- Connectors -->
+
+   <connectors>
+      <connector name="netty-connector">
+         <factory-class>org.jboss.messaging.integration.transports.netty.NettyConnectorFactory</factory-class>
+         <param key="jbm.remoting.netty.port" value="5446" type="Integer"/>
+      </connector>
+   </connectors>
+   
+   <!-- Acceptors -->
+   <acceptors>
+      <acceptor name="netty-acceptor">
+         <factory-class>org.jboss.messaging.integration.transports.netty.NettyAcceptorFactory</factory-class>
+         <param key="jbm.remoting.netty.port" value="5446" type="Integer"/>
+      </acceptor>
+   </acceptors>
+
+   <!-- Other config -->
+
+   <journal-min-files>2</journal-min-files>
+
+</configuration>

Added: trunk/examples/jms/jaas/server0/jbm-jboss-beans.xml
===================================================================
--- trunk/examples/jms/jaas/server0/jbm-jboss-beans.xml	                        (rev 0)
+++ trunk/examples/jms/jaas/server0/jbm-jboss-beans.xml	2009-05-12 19:43:17 UTC (rev 6748)
@@ -0,0 +1,89 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<deployment xmlns="urn:jboss:bean-deployer:2.0">
+
+   <bean name="Naming" class="org.jnp.server.NamingBeanImpl"/>
+
+   <!-- JNDI server. Disable this if you don't want JNDI -->
+   <bean name="JNDIServer" class="org.jnp.server.Main">
+      <property name="namingInfo">
+         <inject bean="Naming"/>
+      </property>
+      <property name="port">1099</property>
+      <property name="bindAddress">localhost</property>
+      <property name="rmiPort">1098</property>
+      <property name="rmiBindAddress">localhost</property>
+   </bean>
+   
+   <!-- MBean server -->
+   <bean name="MBeanServer" class="javax.management.MBeanServer">
+      <constructor factoryClass="java.lang.management.ManagementFactory"
+                   factoryMethod="getPlatformMBeanServer"/>
+   </bean> 
+
+   <!-- The core configuration -->
+   <bean name="Configuration" class="org.jboss.messaging.core.config.impl.FileConfiguration"/>
+
+   <!-- The security manager using JAAS -->
+   <bean name="JBMSecurityManager" class="org.jboss.messaging.integration.security.JAASSecurityManager">
+      <property name="configurationName">org.jboss.jms.example.ExampleLoginModule</property>
+      <property name="configuration">
+         <inject bean="ExampleConfiguration"/>
+      </property>
+      <property name="callbackHandler">
+        <inject bean="ExampleCallbackHandler" />
+      </property>
+   </bean>
+
+   <bean name="ExampleConfiguration" class="org.jboss.jms.example.ExampleConfiguration">
+      <constructor>
+         <parameter>org.jboss.jms.example.ExampleLoginModule</parameter>
+         <parameter>
+           <map class="java.util.HashMap" keyClass="java.lang.String"
+                                          valueClass="java.lang.String">
+               <entry>
+                  <key>user</key>
+                  <value>jboss</value>
+               </entry>
+               <entry>
+                  <key>pass</key>
+                  <value>redhat</value>
+               </entry>
+               <entry>
+                  <key>role</key>
+                  <value>guest</value>
+               </entry>
+            </map> 
+         </parameter>
+      </constructor>
+   </bean>
+
+   <bean name="ExampleCallbackHandler" class="org.jboss.jms.example.ExampleCallbackHandler" />                 
+      
+   <!-- The core server -->
+   <bean name="MessagingServer" class="org.jboss.messaging.core.server.impl.MessagingServerImpl"> 
+      <start ignored="true"/>
+      <stop ignored="true"/>
+      <constructor>
+         <parameter>
+            <inject bean="Configuration"/>
+         </parameter>
+         <parameter>
+            <inject bean="MBeanServer"/>
+         </parameter>
+         <parameter>
+            <inject bean="JBMSecurityManager"/>
+         </parameter>        
+      </constructor>         
+   </bean>
+   
+   <!-- The JMS server -->
+   <bean name="JMSServerManager" class="org.jboss.messaging.jms.server.impl.JMSServerManagerImpl">
+      <constructor>         
+         <parameter>
+            <inject bean="MessagingServer"/>
+         </parameter>
+      </constructor>
+   </bean>
+
+</deployment>

Added: trunk/examples/jms/jaas/server0/jbm-jms.xml
===================================================================
--- trunk/examples/jms/jaas/server0/jbm-jms.xml	                        (rev 0)
+++ trunk/examples/jms/jaas/server0/jbm-jms.xml	2009-05-12 19:43:17 UTC (rev 6748)
@@ -0,0 +1,17 @@
+<deployment xmlns="urn:jboss:messaging"
+            xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+            xsi:schemaLocation="urn:jboss:messaging ../schemas/jbm-jms.xsd ">
+   <!--the connection factory used by the example-->
+   <connection-factory name="ConnectionFactory">
+      <connector-ref connector-name="netty-connector"/>
+      <entries>
+         <entry name="ConnectionFactory"/>
+      </entries>
+   </connection-factory>
+
+   <!--the queue used by the example-->
+   <queue name="exampleQueue">
+      <entry name="/queue/exampleQueue"/>
+   </queue>
+
+</deployment>

Added: trunk/examples/jms/jaas/server0/jbm-queues.xml
===================================================================
--- trunk/examples/jms/jaas/server0/jbm-queues.xml	                        (rev 0)
+++ trunk/examples/jms/jaas/server0/jbm-queues.xml	2009-05-12 19:43:17 UTC (rev 6748)
@@ -0,0 +1,17 @@
+<configuration xmlns="urn:jboss:messaging"
+            xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+            xsi:schemaLocation="urn:jboss:messaging ../schemas/jbm-configuration.xsd ">
+
+   <security-settings>
+      <!--security for example queue-->
+      <security-setting match="jms.queue.exampleQueue">
+         <permission type="createDurableQueue" roles="guest"/>
+         <permission type="deleteDurableQueue" roles="guest"/>
+         <permission type="createTempQueue" roles="guest"/>
+         <permission type="deleteTempQueue" roles="guest"/>
+         <permission type="consume" roles="guest"/>
+         <permission type="send" roles="guest"/>
+      </security-setting>
+   </security-settings>
+
+</configuration>

Added: trunk/examples/jms/jaas/src/org/jboss/jms/example/ExampleCallbackHandler.java
===================================================================
--- trunk/examples/jms/jaas/src/org/jboss/jms/example/ExampleCallbackHandler.java	                        (rev 0)
+++ trunk/examples/jms/jaas/src/org/jboss/jms/example/ExampleCallbackHandler.java	2009-05-12 19:43:17 UTC (rev 6748)
@@ -0,0 +1,45 @@
+/*
+ * JBoss, Home of Professional Open Source
+ * Copyright 2005-2009, Red Hat Middleware LLC, and individual contributors
+ * by the @authors tag. See the copyright.txt in the distribution for a
+ * full listing of individual contributors.
+ *
+ * This is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License as
+ * published by the Free Software Foundation; either version 2.1 of
+ * the License, or (at your option) any later version.
+ *
+ * This software is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this software; if not, write to the Free
+ * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
+ */
+
+
+package org.jboss.jms.example;
+
+import java.io.IOException;
+
+import javax.security.auth.callback.Callback;
+import javax.security.auth.callback.CallbackHandler;
+import javax.security.auth.callback.UnsupportedCallbackException;
+
+/**
+ * A ExampleCallbackHandler
+ *
+ * @author <a href="mailto:jmesnil at redhat.com">Jeff Mesnil</a>
+ */
+public class ExampleCallbackHandler implements CallbackHandler
+{
+
+   public void handle(Callback[] callbacks) throws IOException, UnsupportedCallbackException
+   {
+      // do nothing, authentication is done 
+      // by passing credentials directly to the ExampleLoginModule
+   }
+}

Added: trunk/examples/jms/jaas/src/org/jboss/jms/example/ExampleConfiguration.java
===================================================================
--- trunk/examples/jms/jaas/src/org/jboss/jms/example/ExampleConfiguration.java	                        (rev 0)
+++ trunk/examples/jms/jaas/src/org/jboss/jms/example/ExampleConfiguration.java	2009-05-12 19:43:17 UTC (rev 6748)
@@ -0,0 +1,61 @@
+/*
+ * JBoss, Home of Professional Open Source
+ * Copyright 2005-2009, Red Hat Middleware LLC, and individual contributors
+ * by the @authors tag. See the copyright.txt in the distribution for a
+ * full listing of individual contributors.
+ *
+ * This is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License as
+ * published by the Free Software Foundation; either version 2.1 of
+ * the License, or (at your option) any later version.
+ *
+ * This software is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this software; if not, write to the Free
+ * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
+ */
+
+
+package org.jboss.jms.example;
+
+import java.util.Map;
+
+import javax.security.auth.login.AppConfigurationEntry;
+import javax.security.auth.login.Configuration;
+
+/**
+ * A ExampleConfiguration
+ *
+ * @author <a href="mailto:jmesnil at redhat.com">Jeff Mesnil</a>
+ */
+public class ExampleConfiguration extends Configuration
+{
+   private final Map<String, ?> options;
+   
+   private final String loginModuleName;
+
+   public ExampleConfiguration(String loginModuleName, Map<String, ?> options)
+   {
+      this.loginModuleName = loginModuleName;
+      this.options = options;
+   }
+
+   @Override
+   public AppConfigurationEntry[] getAppConfigurationEntry(final String name)
+   {
+      AppConfigurationEntry entry = new AppConfigurationEntry(loginModuleName,
+                                                              AppConfigurationEntry.LoginModuleControlFlag.REQUIRED,
+                                                              options);
+      return new AppConfigurationEntry[]{entry};
+   }
+
+   @Override
+   public void refresh()
+   {
+   }
+}

Added: trunk/examples/jms/jaas/src/org/jboss/jms/example/ExampleLoginModule.java
===================================================================
--- trunk/examples/jms/jaas/src/org/jboss/jms/example/ExampleLoginModule.java	                        (rev 0)
+++ trunk/examples/jms/jaas/src/org/jboss/jms/example/ExampleLoginModule.java	2009-05-12 19:43:17 UTC (rev 6748)
@@ -0,0 +1,106 @@
+/*
+ * JBoss, Home of Professional Open Source
+ * Copyright 2005-2009, Red Hat Middleware LLC, and individual contributors
+ * by the @authors tag. See the copyright.txt in the distribution for a
+ * full listing of individual contributors.
+ *
+ * This is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License as
+ * published by the Free Software Foundation; either version 2.1 of
+ * the License, or (at your option) any later version.
+ *
+ * This software is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this software; if not, write to the Free
+ * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
+ */
+
+
+package org.jboss.jms.example;
+
+import java.security.Principal;
+import java.security.acl.Group;
+import java.util.Iterator;
+import java.util.Map;
+
+import javax.security.auth.Subject;
+import javax.security.auth.callback.CallbackHandler;
+import javax.security.auth.login.LoginException;
+import javax.security.auth.spi.LoginModule;
+
+import org.jboss.messaging.integration.security.JAASSecurityManager;
+import org.jboss.security.SimpleGroup;
+
+/**
+ * A ExampleLoginModule
+ *
+ * @author <a href="mailto:jmesnil at redhat.com">Jeff Mesnil</a>
+ */
+public class ExampleLoginModule implements LoginModule
+{
+      private Map<String, ?> options;
+
+      private Subject subject;
+
+      public ExampleLoginModule()
+      {
+      }
+
+      public boolean abort() throws LoginException
+      {
+         return true;
+      }
+
+      public boolean commit() throws LoginException
+      {
+         return true;
+      }
+
+      public void initialize(Subject subject,
+                             CallbackHandler callbackHandler,
+                             Map<String, ?> sharedState,
+                             Map<String, ?> options)
+      {
+         this.subject = subject;
+         // the credentials are passed directly to the
+         // login module through the options user, pass, role
+         this.options = options;
+      }
+
+      public boolean login() throws LoginException
+      {
+         Iterator<char[]> iterator = subject.getPrivateCredentials(char[].class).iterator();
+         char[] passwordChars = iterator.next();
+         String password = new String(passwordChars);
+         Iterator<Principal> iterator2 = subject.getPrincipals().iterator();
+         String user = iterator2.next().getName();
+
+         boolean authenticated = user.equals(options.get("user")) && password.equals(options.get("pass"));
+         
+         if (authenticated)
+         {
+            Group roles = new SimpleGroup("Roles");
+            roles.addMember(new JAASSecurityManager.SimplePrincipal((String)options.get("role")));
+            subject.getPrincipals().add(roles);
+         }
+         System.out.format("JAAS authentication >>> user=%s, password=%s\n", user, password);
+         return authenticated;
+
+      }
+      
+      public Subject getSubject()
+      {
+         return subject;
+      }
+
+      public boolean logout() throws LoginException
+      {
+         return true;
+      }
+
+}

Added: trunk/examples/jms/jaas/src/org/jboss/jms/example/JAASExample.java
===================================================================
--- trunk/examples/jms/jaas/src/org/jboss/jms/example/JAASExample.java	                        (rev 0)
+++ trunk/examples/jms/jaas/src/org/jboss/jms/example/JAASExample.java	2009-05-12 19:43:17 UTC (rev 6748)
@@ -0,0 +1,105 @@
+/*
+   * JBoss, Home of Professional Open Source
+   * Copyright 2005-2008, Red Hat Middleware LLC, and individual contributors
+   * by the @authors tag. See the copyright.txt in the distribution for a
+   * full listing of individual contributors.
+   *
+   * This is free software; you can redistribute it and/or modify it
+   * under the terms of the GNU Lesser General Public License as
+   * published by the Free Software Foundation; either version 2.1 of
+   * the License, or (at your option) any later version.
+   *
+   * This software is distributed in the hope that it will be useful,
+   * but WITHOUT ANY WARRANTY; without even the implied warranty of
+   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+   * Lesser General Public License for more details.
+   *
+   * You should have received a copy of the GNU Lesser General Public
+   * License along with this software; if not, write to the Free
+   * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+   * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
+   */
+package org.jboss.jms.example;
+
+import javax.jms.Connection;
+import javax.jms.ConnectionFactory;
+import javax.jms.MessageConsumer;
+import javax.jms.MessageProducer;
+import javax.jms.Queue;
+import javax.jms.Session;
+import javax.jms.TextMessage;
+import javax.naming.InitialContext;
+
+/**
+ * A simple JMS Queue example that creates a producer and consumer on a queue and sends then receives a message.
+ * The messaging server is configured to use JAAS.
+ * 
+ * @author <a href="mailto:jmesnil at redhat.com">Jeff Mesnil</a>
+ */
+public class JAASExample extends JMSExample
+{
+   public static void main(String[] args)
+   {
+      new JAASExample().run(args);
+   }
+
+   public boolean runExample() throws Exception
+   {
+      Connection connection = null;
+      InitialContext initialContext = null;
+      try
+      {
+         //Step 1. Create an initial context to perform the JNDI lookup.
+         initialContext = getContext(0);
+
+         //Step 2. Perfom a lookup on the queue
+         Queue queue = (Queue) initialContext.lookup("/queue/exampleQueue");
+
+         //Step 3. Perform a lookup on the Connection Factory
+         ConnectionFactory cf = (ConnectionFactory) initialContext.lookup("/ConnectionFactory");
+
+         //Step 4.Create a JMS Connection with user "jboss" and password "redhat"
+         connection = cf.createConnection("jboss", "redhat");
+
+         //Step 5. Create a JMS Session
+         Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
+
+         //Step 6. Create a JMS Message Producer
+         MessageProducer producer = session.createProducer(queue);
+
+         //Step 7. Create a Text Message
+         TextMessage message = session.createTextMessage("This is a text message");
+         
+         System.out.println("Sent message: " + message.getText());
+
+         //Step 8. Send the Message
+         producer.send(message);
+
+         //Step 9. Create a JMS Message Consumer
+         MessageConsumer messageConsumer = session.createConsumer(queue);
+
+         //Step 10. Start the Connection
+         connection.start();
+
+         //Step 11. Receive the message
+         TextMessage messageReceived = (TextMessage) messageConsumer.receive(5000);
+
+         System.out.println("Received message: " + messageReceived.getText());
+
+         return true;
+      }
+      finally
+      {
+         //Step 12. Be sure to close our JMS resources!
+         if (initialContext != null)
+         {
+            initialContext.close();
+         }
+         if(connection != null)
+         {
+            connection.close();
+         }
+      }
+   }
+
+}




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