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Glassfish example source code file (StandardHostDeployer.java)
This example Glassfish source code file (StandardHostDeployer.java) is included in the DevDaily.com
"Java Source Code
Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.
The Glassfish StandardHostDeployer.java source code
/*
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*
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*
* The contents of this file are subject to the terms of either the GNU
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* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can
* obtain a copy of the License at
* https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
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* language governing permissions and limitations under the License.
*
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* file and include the License file at packager/legal/LICENSE.txt.
*
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* exception as provided by Oracle in the GPL Version 2 section of the License
* file that accompanied this code.
*
* Modifications:
* If applicable, add the following below the License Header, with the fields
* enclosed by brackets [] replaced by your own identifying information:
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* its licensees as provided above. However, if you add GPL Version 2 code
* and therefore, elected the GPL Version 2 license, then the option applies
* only if the new code is made subject to such option by the copyright
* holder.
*
*
* This file incorporates work covered by the following copyright and
* permission notice:
*
* Copyright 2004 The Apache Software Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
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package org.apache.catalina.core;
import org.apache.catalina.*;
import org.apache.catalina.startup.ContextRuleSet;
import org.apache.catalina.startup.ExpandWar;
import org.apache.catalina.startup.NamingRuleSet;
import org.apache.catalina.util.StringManager;
import org.apache.tomcat.util.digester.Digester;
import javax.servlet.ServletContext;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.util.Locale;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
* <p>Implementation of Deployer that is delegated to by the
* <code>StandardHost implementation class.
*
* @author Craig R. McClanahan
* @version $Revision: 1.4 $ $Date: 2006/03/12 01:27:01 $
*/
public class StandardHostDeployer implements Deployer {
private static Logger log = Logger.getLogger(
StandardHostDeployer.class.getName());
// ----------------------------------------------------------- Constructors
public StandardHostDeployer() {
}
/**
* Create a new StandardHostDeployer associated with the specified
* StandardHost.
*
* @param host The StandardHost we are associated with
*/
public StandardHostDeployer(StandardHost host) {
super();
this.host = host;
}
// ----------------------------------------------------- Instance Variables
/**
* The <code>ContextRuleSet associated with our
* <code>digester instance.
*/
private ContextRuleSet contextRuleSet = null;
/**
* The <code>Digester instance to use for deploying web applications
* to this <code>Host. WARNING - Usage of this
* instance must be appropriately synchronized to prevent simultaneous
* access by multiple threads.
*/
private Digester digester = null;
/**
* The <code>StandardHost instance we are associated with.
*/
protected StandardHost host = null;
/**
* The <code>NamingRuleSet associated with our
* <code>digester instance.
*/
private NamingRuleSet namingRuleSet = null;
/**
* The document base which should replace the value specified in the
* <code>Context being added in the addChild() method,
* or <code>null if the original value should remain untouched.
*/
private String overrideDocBase = null;
/**
* The config file which should replace the value set for the config file
* of the <code>Contextbeing added in the addChild()
* method, or <code>null if the original value should remain
* untouched.
*/
private String overrideConfigFile = null;
/**
* The string manager for this package.
*/
protected static final StringManager sm =
StringManager.getManager(Constants.Package);
// -------------------------------------------------------- Depoyer Methods
public Host getHost() {
return host;
}
public void setHost(Host host) {
this.host = (StandardHost)host;
}
/**
* Return the name of the Container with which this Deployer is associated.
*/
public String getName() {
return (host.getName());
}
/**
* Install a new web application, whose web application archive is at the
* specified URL, into this container with the specified context path.
* A context path of "" (the empty string) should be used for the root
* application for this container. Otherwise, the context path must
* start with a slash.
* <p>
* If this application is successfully installed, a ContainerEvent of type
* <code>PRE_INSTALL_EVENT will be sent to registered listeners
* before the associated Context is started, and a ContainerEvent of type
* <code>INSTALL_EVENT will be sent to all registered listeners
* after the associated Context is started, with the newly created
* <code>Context as an argument.
*
* @param contextPath The context path to which this application should
* be installed (must be unique)
* @param war A URL of type "jar:" that points to a WAR file, or type
* "file:" that points to an unpacked directory structure containing
* the web application to be installed
*
* @exception IllegalArgumentException if the specified context path
* is malformed (it must be "" or start with a slash)
* @exception IllegalStateException if the specified context path
* is already attached to an existing web application
* @exception IOException if an input/output error was encountered
* during installation
*/
public synchronized void install(String contextPath, URL war)
throws IOException {
// Validate the format and state of our arguments
if (contextPath == null)
throw new IllegalArgumentException
(sm.getString("standardHost.pathRequired"));
if (!contextPath.equals("") && !contextPath.startsWith("/"))
throw new IllegalArgumentException
(sm.getString("standardHost.pathFormat", contextPath));
if (findDeployedApp(contextPath) != null)
throw new IllegalStateException
(sm.getString("standardHost.pathUsed", contextPath));
if (war == null)
throw new IllegalArgumentException
(sm.getString("standardHost.warRequired"));
// Calculate the document base for the new web application
log.info(sm.getString("standardHost.installing",
contextPath, war.toString()));
String url = war.toString();
String docBase = null;
boolean isWAR = false;
if (url.startsWith("jar:")) {
url = url.substring(4, url.length() - 2);
if (!url.toLowerCase(Locale.ENGLISH).endsWith(".war")) {
throw new IllegalArgumentException
(sm.getString("standardHost.warURL", url));
}
isWAR = true;
}
if (url.startsWith("file://"))
docBase = url.substring(7);
else if (url.startsWith("file:"))
docBase = url.substring(5);
else
throw new IllegalArgumentException
(sm.getString("standardHost.warURL", url));
// Determine if directory/war to install is in the host appBase
boolean isAppBase = false;
File appBase = new File(host.getAppBase());
if (!appBase.isAbsolute())
appBase = new File(System.getProperty("catalina.base"),
host.getAppBase());
File contextFile = new File(docBase);
File baseDir = contextFile.getParentFile();
if (appBase.getCanonicalPath().equals(baseDir.getCanonicalPath())) {
isAppBase = true;
}
// For security, if deployXML is false only allow directories
// and war files from the hosts appBase
if (!host.isDeployXML() && !isAppBase) {
throw new IllegalArgumentException
(sm.getString("standardHost.installBase", url));
}
// Make sure contextPath and directory/war names match when
// installing from the host appBase
if (isAppBase && host.getAutoDeploy()) {
String filename = contextFile.getName();
if (isWAR) {
filename = filename.substring(0,filename.length()-4);
}
if (contextPath.length() == 0) {
if (!filename.equals("ROOT")) {
throw new IllegalArgumentException
(sm.getString("standardHost.pathMatch", "/", "ROOT"));
}
} else if (!filename.equals(contextPath.substring(1))) {
throw new IllegalArgumentException
(sm.getString("standardHost.pathMatch", contextPath, filename));
}
}
// Expand war file if host wants wars unpacked
if (isWAR && host.isUnpackWARs()) {
docBase = ExpandWar.expand(host, war, contextPath);
}
// Install the new web application
try {
Class clazz = Class.forName(host.getContextClass());
Context context = (Context) clazz.newInstance();
context.setPath(contextPath);
context.setDocBase(docBase);
if (context instanceof Lifecycle) {
clazz = Class.forName(host.getConfigClass());
LifecycleListener listener =
(LifecycleListener) clazz.newInstance();
((Lifecycle) context).addLifecycleListener(listener);
}
host.fireContainerEvent(PRE_INSTALL_EVENT, context);
host.addChild(context);
host.fireContainerEvent(INSTALL_EVENT, context);
} catch (ClassNotFoundException e) {
log.log(Level.INFO, "", e);
} catch (Exception e) {
log.log(Level.INFO, "Error installing", e);
throw new IOException(e.toString());
}
}
/**
* Install a new web application, whose web application archive is at the
* specified URL, into this container with the specified context path.
* A context path of "" (the empty string) should be used for the root
* application for this container. Otherwise, the context path must
* start with a slash.
* <p>
* If this application is successfully installed, a ContainerEvent of type
* <code>PRE_INSTALL_EVENT will be sent to registered listeners
* before the associated Context is started, and a ContainerEvent of type
* <code>INSTALL_EVENT will be sent to all registered listeners
* after the associated Context is started, with the newly created
* <code>Context as an argument.
*
* @param contextPath The context path to which this application should
* be installed (must be unique)
* @param war A URL of type "jar:" that points to a WAR file, or type
* "file:" that points to an unpacked directory structure containing
* the web application to be installed
* @param configFile The path to a file to save the Context information.
* If configFile is null, the Context information is saved in server.xml;
* if it is NOT null, the Context information is saved in configFile.
*
* @exception IllegalArgumentException if the specified context path
* is malformed (it must be "" or start with a slash)
* @exception IllegalStateException if the specified context path
* is already attached to an existing web application
* @exception IOException if an input/output error was encountered
* during installation
*/
public synchronized void install(String contextPath, URL war,
String configFile) throws IOException {
// Validate the format and state of our arguments
if (contextPath == null)
throw new IllegalArgumentException
(sm.getString("standardHost.pathRequired"));
if (!contextPath.equals("") && !contextPath.startsWith("/"))
throw new IllegalArgumentException
(sm.getString("standardHost.pathFormat", contextPath));
if (findDeployedApp(contextPath) != null)
throw new IllegalStateException
(sm.getString("standardHost.pathUsed", contextPath));
if (war == null)
throw new IllegalArgumentException
(sm.getString("standardHost.warRequired"));
// Calculate the document base for the new web application
log.info(sm.getString("standardHost.installing",
contextPath, war.toString()));
String url = war.toString();
String docBase = null;
boolean isWAR = false;
if (url.startsWith("jar:")) {
url = url.substring(4, url.length() - 2);
if (!url.toLowerCase(Locale.ENGLISH).endsWith(".war")) {
throw new IllegalArgumentException
(sm.getString("standardHost.warURL", url));
}
isWAR = true;
}
if (url.startsWith("file://"))
docBase = url.substring(7);
else if (url.startsWith("file:"))
docBase = url.substring(5);
else
throw new IllegalArgumentException
(sm.getString("standardHost.warURL", url));
// Expand war file if host wants wars unpacked
if (isWAR && host.isUnpackWARs()) {
docBase = ExpandWar.expand(host, war, contextPath);
}
// Install the new web application
try {
Class clazz = Class.forName(host.getContextClass());
Context context = (Context) clazz.newInstance();
context.setPath(contextPath);
context.setDocBase(docBase);
context.setConfigFile(configFile);
if (context instanceof Lifecycle) {
clazz = Class.forName(host.getConfigClass());
LifecycleListener listener =
(LifecycleListener) clazz.newInstance();
((Lifecycle) context).addLifecycleListener(listener);
}
host.fireContainerEvent(PRE_INSTALL_EVENT, context);
host.addChild(context);
host.fireContainerEvent(INSTALL_EVENT, context);
// save context info into configFile
Engine engine = (Engine)host.getParent();
StandardServer server = (StandardServer) engine.getService().getServer();
//server.storeContext(context);
} catch (Exception e) {
log.log(Level.SEVERE,
sm.getString("standardHost.installError", contextPath),
e);
throw new IOException(e.toString());
}
}
/**
* <p>Install a new web application, whose context configuration file
* (consisting of a <code><Context> element) and (optional)
* web application archive are at the specified URLs.</p>
*
* If this application is successfully installed, a ContainerEvent of type
* <code>PRE_INSTALL_EVENT will be sent to registered listeners
* before the associated Context is started, and a ContainerEvent of type
* <code>INSTALL_EVENT will be sent to all registered listeners
* after the associated Context is started, with the newly created
* <code>Context as an argument.
*
* @param config A URL that points to the context configuration descriptor
* to be used for configuring the new Context
* @param war A URL of type "jar:" that points to a WAR file, or type
* "file:" that points to an unpacked directory structure containing
* the web application to be installed, or <code>null to use
* the <code>docBase attribute from the configuration descriptor
*
* @exception IllegalArgumentException if one of the specified URLs is
* null
* @exception IllegalStateException if the context path specified in the
* context configuration file is already attached to an existing web
* application
* @exception IOException if an input/output error was encountered
* during installation
*/
public synchronized void install(URL config, URL war) throws IOException {
// Validate the format and state of our arguments
if (config == null)
throw new IllegalArgumentException
(sm.getString("standardHost.configRequired"));
if (!host.isDeployXML())
throw new IllegalArgumentException
(sm.getString("standardHost.configNotAllowed"));
log.info(sm.getString("standardHost.installingXML", config));
// Calculate the document base for the new web application (if needed)
String docBase = null; // Optional override for value in config file
boolean isWAR = false;
if (war != null) {
String url = war.toString();
log.info(sm.getString("standardHost.installingWAR", url));
// Calculate the WAR file absolute pathname
if (url.startsWith("jar:")) {
url = url.substring(4, url.length() - 2);
isWAR = true;
}
if (url.startsWith("file://"))
docBase = url.substring(7);
else if (url.startsWith("file:"))
docBase = url.substring(5);
else
throw new IllegalArgumentException
(sm.getString("standardHost.warURL", url));
}
// Expand war file if host wants wars unpacked
if (isWAR && host.isUnpackWARs()) {
docBase = ExpandWar.expand(host, war);
}
// Install the new web application
this.overrideDocBase = docBase;
if (config.toString().startsWith("file:")) {
this.overrideConfigFile = config.getFile();
}
InputStream stream = null;
try {
stream = config.openStream();
Digester digester = createDigester();
digester.setDebug(host.getDebug());
digester.setClassLoader(this.getClass().getClassLoader());
digester.clear();
digester.push(this);
digester.parse(stream);
stream.close();
stream = null;
} catch (Exception e) {
host.log
(sm.getString("standardHost.installError", docBase), e);
throw new IOException(e.toString());
} finally {
if (stream != null) {
try {
stream.close();
} catch (Throwable t) {
;
}
}
this.overrideDocBase = null;
this.overrideConfigFile = null;
}
}
/**
* Return the Context for the deployed application that is associated
* with the specified context path (if any); otherwise return
* <code>null.
*
* @param contextPath The context path of the requested web application
*/
public Context findDeployedApp(String contextPath) {
return ((Context) host.findChild(contextPath));
}
/**
* Return the context paths of all deployed web applications in this
* Container. If there are no deployed applications, a zero-length
* array is returned.
*/
public String[] findDeployedApps() {
Container children[] = host.findChildren();
String results[] = new String[children.length];
for (int i = 0; i < children.length; i++)
results[i] = children[i].getName();
return (results);
}
/**
* Remove an existing web application, attached to the specified context
* path. If this application is successfully removed, a
* ContainerEvent of type <code>REMOVE_EVENT will be sent to all
* registered listeners, with the removed <code>Context as
* an argument.
*
* @param contextPath The context path of the application to be removed
*
* @exception IllegalArgumentException if the specified context path
* is malformed (it must be "" or start with a slash)
* @exception IllegalArgumentException if the specified context path does
* not identify a currently installed web application
* @exception IOException if an input/output error occurs during
* removal
*/
public void remove(String contextPath) throws IOException {
// Validate the format and state of our arguments
if (contextPath == null)
throw new IllegalArgumentException
(sm.getString("standardHost.pathRequired"));
if (!contextPath.equals("") && !contextPath.startsWith("/"))
throw new IllegalArgumentException
(sm.getString("standardHost.pathFormat", contextPath));
// Locate the context and associated work directory
Context context = findDeployedApp(contextPath);
if (context == null)
throw new IllegalArgumentException
(sm.getString("standardHost.pathMissing", contextPath));
// Remove this web application
log.info(sm.getString("standardHost.removing", contextPath));
try {
host.removeChild(context);
host.fireContainerEvent(REMOVE_EVENT, context);
} catch (Exception e) {
log.log(Level.SEVERE,
sm.getString("standardHost.removeError", contextPath), e);
throw new IOException(e.toString());
}
}
/**
* Remove an existing web application, attached to the specified context
* path. If this application is successfully removed, a
* ContainerEvent of type <code>REMOVE_EVENT will be sent to all
* registered listeners, with the removed <code>Context as
* an argument. Deletes the web application war file and/or directory
* if they exist in the Host's appBase.
*
* @param contextPath The context path of the application to be removed
* @param undeploy boolean flag to remove web application from server
*
* @exception IllegalArgumentException if the specified context path
* is malformed (it must be "" or start with a slash)
* @exception IllegalArgumentException if the specified context path does
* not identify a currently installed web application
* @exception IOException if an input/output error occurs during
* removal
*/
public void remove(String contextPath, boolean undeploy)
throws IOException {
// Validate the format and state of our arguments
if (contextPath == null)
throw new IllegalArgumentException
(sm.getString("standardHost.pathRequired"));
if (!contextPath.equals("") && !contextPath.startsWith("/"))
throw new IllegalArgumentException
(sm.getString("standardHost.pathFormat", contextPath));
// Locate the context and associated work directory
Context context = findDeployedApp(contextPath);
if (context == null)
throw new IllegalArgumentException
(sm.getString("standardHost.pathMissing", contextPath));
// Remove this web application
host.log(sm.getString("standardHost.removing", contextPath));
try {
// Get the work directory for the Context
File workDir =
(File) context.getServletContext().getAttribute
(ServletContext.TEMPDIR);
String configFile = context.getConfigFile();
host.removeChild(context);
if (undeploy) {
// Remove the web application directory and/or war file if it
// exists in the Host's appBase directory.
// Determine if directory/war to remove is in the host appBase
boolean isAppBase = false;
File appBase = new File(host.getAppBase());
if (!appBase.isAbsolute())
appBase = new File(System.getProperty("catalina.base"),
host.getAppBase());
File contextFile = new File(context.getDocBase());
File baseDir = contextFile.getParentFile();
if ((baseDir == null)
|| (appBase.getCanonicalPath().equals
(baseDir.getCanonicalPath()))) {
isAppBase = true;
}
boolean isWAR = false;
if (contextFile.getName().toLowerCase(Locale.ENGLISH).endsWith(".war")) {
isWAR = true;
}
// Only remove directory and/or war if they are located in the
// Host's appBase autoDeploy is true
if (isAppBase && host.getAutoDeploy()) {
String filename = contextFile.getName();
if (isWAR) {
filename = filename.substring(0,filename.length()-4);
}
if (contextPath.length() == 0 && filename.equals("ROOT") ||
filename.equals(contextPath.substring(1))) {
if (!isWAR) {
long contextLastModified =
contextFile.lastModified();
if (contextFile.isDirectory()) {
deleteDir(contextFile);
}
if (host.isUnpackWARs()) {
File contextWAR =
new File(context.getDocBase() + ".war");
if (contextWAR.exists()) {
if (contextLastModified
> contextWAR.lastModified()) {
contextWAR.delete();
}
}
}
} else {
contextFile.delete();
}
}
if (host.isDeployXML() && (configFile != null)) {
File docBaseXml = new File(configFile);
docBaseXml.delete();
}
}
// Remove the work directory for the Context
if (workDir == null &&
context instanceof StandardContext &&
((StandardContext)context).getWorkDir() != null) {
workDir = new File(((StandardContext)context).getWorkPath());
}
if (workDir != null && workDir.exists()) {
deleteDir(workDir);
}
}
host.fireContainerEvent(REMOVE_EVENT, context);
} catch (Exception e) {
host.log(sm.getString("standardHost.removeError", contextPath), e);
throw new IOException(e.toString());
}
}
/**
* Start an existing web application, attached to the specified context
* path. Only starts a web application if it is not running.
*
* @param contextPath The context path of the application to be started
*
* @exception IllegalArgumentException if the specified context path
* is malformed (it must be "" or start with a slash)
* @exception IllegalArgumentException if the specified context path does
* not identify a currently installed web application
* @exception IOException if an input/output error occurs during
* startup
*/
public void start(String contextPath) throws IOException {
// Validate the format and state of our arguments
if (contextPath == null)
throw new IllegalArgumentException
(sm.getString("standardHost.pathRequired"));
if (!contextPath.equals("") && !contextPath.startsWith("/"))
throw new IllegalArgumentException
(sm.getString("standardHost.pathFormat", contextPath));
Context context = findDeployedApp(contextPath);
if (context == null)
throw new IllegalArgumentException
(sm.getString("standardHost.pathMissing", contextPath));
log.info(sm.getString("standardHost.start", contextPath));
try {
((Lifecycle) context).start();
} catch (LifecycleException e) {
log.log(Level.SEVERE, sm.getString("standardHost.start",
contextPath), e);
throw new IllegalStateException(sm.getString("standardHost.start",
contextPath), e);
}
}
/**
* Stop an existing web application, attached to the specified context
* path. Only stops a web application if it is running.
*
* @param contextPath The context path of the application to be stopped
*
* @exception IllegalArgumentException if the specified context path
* is malformed (it must be "" or start with a slash)
* @exception IllegalArgumentException if the specified context path does
* not identify a currently installed web application
* @exception IOException if an input/output error occurs while stopping
* the web application
*/
public void stop(String contextPath) throws IOException {
// Validate the format and state of our arguments
if (contextPath == null)
throw new IllegalArgumentException
(sm.getString("standardHost.pathRequired"));
if (!contextPath.equals("") && !contextPath.startsWith("/"))
throw new IllegalArgumentException
(sm.getString("standardHost.pathFormat", contextPath));
Context context = findDeployedApp(contextPath);
if (context == null)
throw new IllegalArgumentException
(sm.getString("standardHost.pathMissing", contextPath));
log.info(sm.getString("standardHost.stop", contextPath));
try {
((Lifecycle) context).stop();
} catch (LifecycleException e) {
log.log(Level.SEVERE, sm.getString("standardHost.stop",
contextPath), e);
throw new IllegalStateException(sm.getString("standardHost.stop",
contextPath), e);
}
}
// ------------------------------------------------------ Delegated Methods
/**
* Delegate a request to add a child Context to our associated Host.
*
* @param child The child Context to be added
*/
public void addChild(Container child) {
Context context = (Context) child;
String contextPath = context.getPath();
if (contextPath == null)
throw new IllegalArgumentException
(sm.getString("standardHost.pathRequired"));
else if (!contextPath.equals("") && !contextPath.startsWith("/"))
throw new IllegalArgumentException
(sm.getString("standardHost.pathFormat", contextPath));
if (host.findChild(contextPath) != null)
throw new IllegalStateException
(sm.getString("standardHost.pathUsed", contextPath));
if (this.overrideDocBase != null)
context.setDocBase(this.overrideDocBase);
if (this.overrideConfigFile != null)
context.setConfigFile(this.overrideConfigFile);
host.fireContainerEvent(PRE_INSTALL_EVENT, context);
host.addChild(child);
host.fireContainerEvent(INSTALL_EVENT, context);
}
/**
* Delegate a request for the parent class loader to our associated Host.
*/
public ClassLoader getParentClassLoader() {
return (host.getParentClassLoader());
}
// ------------------------------------------------------ Protected Methods
/**
* Create (if necessary) and return a Digester configured to process the
* context configuration descriptor for an application.
*/
protected Digester createDigester() {
if (digester == null) {
digester = new Digester();
if (host.getDebug() > 0)
digester.setDebug(3);
digester.setValidating(false);
contextRuleSet = new ContextRuleSet("");
digester.addRuleSet(contextRuleSet);
namingRuleSet = new NamingRuleSet("Context/");
digester.addRuleSet(namingRuleSet);
}
return (digester);
}
/**
* Delete the specified directory, including all of its contents and
* subdirectories recursively.
*
* @param dir File object representing the directory to be deleted
*/
protected void deleteDir(File dir) {
String files[] = dir.list();
if (files == null) {
files = new String[0];
}
for (int i = 0; i < files.length; i++) {
File file = new File(dir, files[i]);
if (file.isDirectory()) {
deleteDir(file);
} else {
file.delete();
}
}
dir.delete();
}
}
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