Glassfish example source code file (NamingContextListener.java)
The Glassfish NamingContextListener.java source code/*
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package org.apache.catalina.core;
import org.apache.catalina.*;
import org.apache.catalina.deploy.*;
import org.apache.catalina.util.StringManager;
import org.apache.naming.*;
import javax.naming.NamingException;
import javax.naming.Reference;
import javax.naming.StringRefAddr;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import java.util.Enumeration;
import java.util.Hashtable;
import java.util.StringTokenizer;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
* Helper class used to initialize and populate the JNDI context associated
* with each context and server.
*
* @author Remy Maucherat
* @version $Revision: 1.7 $ $Date: 2006/11/06 21:13:38 $
*/
public class NamingContextListener
implements LifecycleListener, ContainerListener, PropertyChangeListener {
private static final Logger log = Logger.getLogger(
NamingContextListener.class.getName());
// ----------------------------------------------------------- Constructors
/**
* Create a new naming context listener.
*/
public NamingContextListener() {
if (log.isLoggable(Level.FINEST))
log.finest( "new NamingContextListener");
}
// ----------------------------------------------------- Instance Variables
/**
* Name of the associated naming context.
*/
protected String name = "/";
/**
* Associated container.
*/
protected Object container = null;
/**
* Debugging level.
*/
protected int debug = 0;
/**
* Initialized flag.
*/
protected boolean initialized = false;
/**
* Associated naming resources.
*/
protected NamingResources namingResources = null;
/**
* Associated JNDI context.
*/
protected NamingContext namingContext = null;
/**
* Comp context.
*/
protected javax.naming.Context compCtx = null;
/**
* Env context.
*/
protected javax.naming.Context envCtx = null;
/**
* The string manager for this package.
*/
protected static final StringManager sm =
StringManager.getManager(Constants.Package);
// ------------------------------------------------------------- Properties
/**
* Return the "debug" property.
*/
public int getDebug() {
return (this.debug);
}
/**
* Set the "debug" property.
*
* @param debug The new debug level
*/
public void setDebug(int debug) {
this.debug = debug;
}
/**
* Return the "name" property.
*/
public String getName() {
return (this.name);
}
/**
* Set the "name" property.
*
* @param name The new name
*/
public void setName(String name) {
this.name = name;
if (log.isLoggable(Level.FINE))
log.fine( "setName " + name);
}
/**
* Return the associated naming context.
*/
public NamingContext getNamingContext() {
return (this.namingContext);
}
// ---------------------------------------------- LifecycleListener Methods
/**
* Acknowledge the occurrence of the specified event.
*
* @param event LifecycleEvent that has occurred
*/
public void lifecycleEvent(LifecycleEvent event) {
container = event.getLifecycle();
if (container instanceof Context) {
namingResources = ((Context) container).getNamingResources();
} else if (container instanceof Server) {
namingResources = ((Server) container).getGlobalNamingResources();
} else {
return;
}
if (event.getType() == Lifecycle.START_EVENT) {
if (initialized)
return;
Hashtable contextEnv = new Hashtable();
try {
namingContext = new NamingContext(contextEnv, getName());
} catch (NamingException e) {
// Never happens
}
ContextAccessController.setSecurityToken(getName(), container);
ContextBindings.bindContext(container, namingContext, container);
if (log.isLoggable(Level.FINE)) {
log.fine("Bound " + container );
}
// Setting the context in read/write mode
ContextAccessController.setWritable(getName(), container);
try {
createNamingContext();
} catch (NamingException e) {
log(sm.getString("naming.namingContextCreationFailed", e));
}
namingResources.addPropertyChangeListener(this);
// Binding the naming context to the class loader
if (container instanceof Context) {
// Setting the context in read only mode
ContextAccessController.setReadOnly(getName());
try {
ContextBindings.bindClassLoader
(container, container,
((Container) container).getLoader().getClassLoader());
} catch (NamingException e) {
log(sm.getString("naming.bindFailed", e));
}
}
if (container instanceof Server) {
org.apache.naming.factory.ResourceLinkFactory.setGlobalContext
(namingContext);
try {
ContextBindings.bindClassLoader
(container, container,
this.getClass().getClassLoader());
} catch (NamingException e) {
log(sm.getString("naming.bindFailed", e));
}
if (container instanceof StandardServer) {
((StandardServer) container).setGlobalNamingContext
(namingContext);
}
}
initialized = true;
} else if (event.getType() == Lifecycle.STOP_EVENT) {
if (!initialized)
return;
// Setting the context in read/write mode
ContextAccessController.setWritable(getName(), container);
ContextBindings.unbindContext(container, container);
if (container instanceof Context) {
ContextBindings.unbindClassLoader
(container, container,
((Container) container).getLoader().getClassLoader());
}
if (container instanceof Server) {
namingResources.removePropertyChangeListener(this);
ContextBindings.unbindClassLoader
(container, container,
this.getClass().getClassLoader());
}
ContextAccessController.unsetSecurityToken(getName(), container);
namingContext = null;
envCtx = null;
compCtx = null;
initialized = false;
}
}
// ---------------------------------------------- ContainerListener Methods
/**
* Acknowledge the occurrence of the specified event.
* Note: Will never be called when the listener is associated to a Server,
* since it is not a Container.
*
* @param event ContainerEvent that has occurred
*/
public void containerEvent(ContainerEvent event) {
if (!initialized)
return;
// Setting the context in read/write mode
ContextAccessController.setWritable(getName(), container);
String type = event.getType();
if (type.equals("addEjb")) {
String ejbName = (String) event.getData();
if (ejbName != null) {
ContextEjb ejb = namingResources.findEjb(ejbName);
addEjb(ejb);
}
} else if (type.equals("addEnvironment")) {
String environmentName = (String) event.getData();
if (environmentName != null) {
ContextEnvironment env =
namingResources.findEnvironment(environmentName);
addEnvironment(env);
}
} else if ((type.equals("addResourceParams"))
|| (type.equals("removeResourceParams"))) {
String resourceParamsName = (String) event.getData();
if (resourceParamsName != null) {
ContextEjb ejb = namingResources.findEjb(resourceParamsName);
if (ejb != null) {
removeEjb(resourceParamsName);
addEjb(ejb);
}
ContextResource resource =
namingResources.findResource(resourceParamsName);
if (resource != null) {
removeResource(resourceParamsName);
addResource(resource);
}
String resourceEnvRefValue =
namingResources.findResourceEnvRef(resourceParamsName);
if (resourceEnvRefValue != null) {
removeResourceEnvRef(resourceParamsName);
addResourceEnvRef(resourceParamsName, resourceEnvRefValue);
}
ContextResourceLink resourceLink =
namingResources.findResourceLink(resourceParamsName);
if (resourceLink != null) {
removeResourceLink(resourceParamsName);
addResourceLink(resourceLink);
}
}
} else if (type.equals("addLocalEjb")) {
String localEjbName = (String) event.getData();
if (localEjbName != null) {
ContextLocalEjb localEjb =
namingResources.findLocalEjb(localEjbName);
addLocalEjb(localEjb);
}
} else if (type.equals("addResource")) {
String resourceName = (String) event.getData();
if (resourceName != null) {
ContextResource resource =
namingResources.findResource(resourceName);
addResource(resource);
}
} else if (type.equals("addResourceLink")) {
String resourceLinkName = (String) event.getData();
if (resourceLinkName != null) {
ContextResourceLink resourceLink =
namingResources.findResourceLink(resourceLinkName);
addResourceLink(resourceLink);
}
} else if (type.equals("addResourceEnvRef")) {
String resourceEnvRefName = (String) event.getData();
if (resourceEnvRefName != null) {
String resourceEnvRefValue =
namingResources.findResourceEnvRef(resourceEnvRefName);
addResourceEnvRef(resourceEnvRefName, resourceEnvRefValue);
}
} else if (type.equals("removeEjb")) {
String ejbName = (String) event.getData();
if (ejbName != null) {
removeEjb(ejbName);
}
} else if (type.equals("removeEnvironment")) {
String environmentName = (String) event.getData();
if (environmentName != null) {
removeEnvironment(environmentName);
}
} else if (type.equals("removeLocalEjb")) {
String localEjbName = (String) event.getData();
if (localEjbName != null) {
removeLocalEjb(localEjbName);
}
} else if (type.equals("removeResource")) {
String resourceName = (String) event.getData();
if (resourceName != null) {
removeResource(resourceName);
}
} else if (type.equals("removeResourceLink")) {
String resourceLinkName = (String) event.getData();
if (resourceLinkName != null) {
removeResourceLink(resourceLinkName);
}
} else if (type.equals("removeResourceEnvRef")) {
String resourceEnvRefName = (String) event.getData();
if (resourceEnvRefName != null) {
removeResourceEnvRef(resourceEnvRefName);
}
}
// Setting the context in read only mode
ContextAccessController.setReadOnly(getName());
}
// ----------------------------------------- PropertyChangeListener Methods
/**
* Process property change events.
*
* @param event The property change event that has occurred
*/
public void propertyChange(PropertyChangeEvent event) {
if (!initialized)
return;
Object source = event.getSource();
if (source == namingResources) {
// Setting the context in read/write mode
ContextAccessController.setWritable(getName(), container);
processGlobalResourcesChange(event.getPropertyName(),
event.getOldValue(),
event.getNewValue());
// Setting the context in read only mode
ContextAccessController.setReadOnly(getName());
}
}
// -------------------------------------------------------- Private Methods
/**
* Process a property change on the naming resources, by making the
* corresponding addition or removal to the associated JNDI context.
*
* @param name Property name of the change to be processed
* @param oldValue The old value (or <code>null if adding)
* @param newValue The new value (or <code>null if removing)
*/
private void processGlobalResourcesChange(String name,
Object oldValue,
Object newValue) {
if (name.equals("ejb")) {
if (oldValue != null) {
ContextEjb ejb = (ContextEjb) oldValue;
if (ejb.getName() != null) {
removeEjb(ejb.getName());
}
}
if (newValue != null) {
ContextEjb ejb = (ContextEjb) newValue;
if (ejb.getName() != null) {
addEjb(ejb);
}
}
} else if (name.equals("environment")) {
if (oldValue != null) {
ContextEnvironment env = (ContextEnvironment) oldValue;
if (env.getName() != null) {
removeEnvironment(env.getName());
}
}
if (newValue != null) {
ContextEnvironment env = (ContextEnvironment) newValue;
if (env.getName() != null) {
addEnvironment(env);
}
}
} else if (name.equals("localEjb")) {
if (oldValue != null) {
ContextLocalEjb ejb = (ContextLocalEjb) oldValue;
if (ejb.getName() != null) {
removeLocalEjb(ejb.getName());
}
}
if (newValue != null) {
ContextLocalEjb ejb = (ContextLocalEjb) newValue;
if (ejb.getName() != null) {
addLocalEjb(ejb);
}
}
} else if (name.equals("resource")) {
if (oldValue != null) {
ContextResource resource = (ContextResource) oldValue;
if (resource.getName() != null) {
removeResource(resource.getName());
}
}
if (newValue != null) {
ContextResource resource = (ContextResource) newValue;
if (resource.getName() != null) {
addResource(resource);
}
}
} else if (name.equals("resourceEnvRef")) {
if (oldValue != null) {
String update = (String) oldValue;
int colon = update.indexOf(':');
removeResourceEnvRef(update.substring(0, colon));
}
if (newValue != null) {
String update = (String) newValue;
int colon = update.indexOf(':');
addResourceEnvRef(update.substring(0, colon),
update.substring(colon + 1));
}
} else if (name.equals("resourceLink")) {
if (oldValue != null) {
ContextResourceLink rl = (ContextResourceLink) oldValue;
if (rl.getName() != null) {
removeResourceLink(rl.getName());
}
}
if (newValue != null) {
ContextResourceLink rl = (ContextResourceLink) newValue;
if (rl.getName() != null) {
addResourceLink(rl);
}
}
} else if (name.equals("resourceParams")) {
String resourceParamsName = null;
ResourceParams rp = null;
if (oldValue != null) {
rp = (ResourceParams) oldValue;
}
if (newValue != null) {
rp = (ResourceParams) newValue;
}
if (rp != null) {
resourceParamsName = rp.getName();
}
if (resourceParamsName != null) {
ContextEjb ejb = namingResources.findEjb(resourceParamsName);
if (ejb != null) {
removeEjb(resourceParamsName);
addEjb(ejb);
}
ContextResource resource =
namingResources.findResource(resourceParamsName);
if (resource != null) {
removeResource(resourceParamsName);
addResource(resource);
}
String resourceEnvRefValue =
namingResources.findResourceEnvRef(resourceParamsName);
if (resourceEnvRefValue != null) {
removeResourceEnvRef(resourceParamsName);
addResourceEnvRef(resourceParamsName, resourceEnvRefValue);
}
ContextResourceLink resourceLink =
namingResources.findResourceLink(resourceParamsName);
if (resourceLink != null) {
removeResourceLink(resourceParamsName);
addResourceLink(resourceLink);
}
}
}
}
/**
* Create and initialize the JNDI naming context.
*/
private void createNamingContext()
throws NamingException {
// Creating the comp subcontext
if (container instanceof Server) {
compCtx = namingContext;
envCtx = namingContext;
} else {
compCtx = namingContext.createSubcontext("comp");
envCtx = compCtx.createSubcontext("env");
}
int i;
if (log.isLoggable(Level.FINE))
log.fine("Creating JNDI naming context");
if (namingResources == null) {
namingResources = new NamingResources();
namingResources.setContainer(container);
}
// Resource links
ContextResourceLink[] resourceLinks =
namingResources.findResourceLinks();
for (i = 0; i < resourceLinks.length; i++) {
addResourceLink(resourceLinks[i]);
}
// Resources
ContextResource[] resources = namingResources.findResources();
for (i = 0; i < resources.length; i++) {
addResource(resources[i]);
}
// Resources Env
String[] resourceEnvRefs = namingResources.findResourceEnvRefs();
for (i = 0; i < resourceEnvRefs.length; i++) {
String key = resourceEnvRefs[i];
String type = namingResources.findResourceEnvRef(key);
addResourceEnvRef(key, type);
}
// Environment entries
ContextEnvironment[] contextEnvironments =
namingResources.findEnvironments();
for (i = 0; i < contextEnvironments.length; i++) {
addEnvironment(contextEnvironments[i]);
}
// EJB references
ContextEjb[] ejbs = namingResources.findEjbs();
for (i = 0; i < ejbs.length; i++) {
addEjb(ejbs[i]);
}
// Binding a User Transaction reference
if (container instanceof Context) {
try {
Reference ref = new TransactionRef();
compCtx.bind("UserTransaction", ref);
addAdditionalParameters
(namingResources, ref, "UserTransaction");
} catch (NamingException e) {
log(sm.getString("naming.bindFailed", e));
}
}
// Binding the resources directory context
if (container instanceof Context) {
try {
compCtx.bind("Resources",
((Container) container).getResources());
} catch (NamingException e) {
log(sm.getString("naming.bindFailed", e));
}
}
}
/**
* Set the specified EJBs in the naming context.
*/
public void addEjb(ContextEjb ejb) {
// Create a reference to the EJB.
Reference ref = new EjbRef
(ejb.getType(), ejb.getHome(), ejb.getRemote(), ejb.getLink());
// Adding the additional parameters, if any
addAdditionalParameters(ejb.getNamingResources(), ref, ejb.getName());
try {
createSubcontexts(envCtx, ejb.getName());
envCtx.bind(ejb.getName(), ref);
} catch (NamingException e) {
log(sm.getString("naming.bindFailed", e));
}
}
/**
* Set the specified environment entries in the naming context.
*/
public void addEnvironment(ContextEnvironment env) {
Object value = null;
// Instantiating a new instance of the correct object type, and
// initializing it.
String type = env.getType();
try {
if (type.equals("java.lang.String")) {
value = env.getValue();
} else if (type.equals("java.lang.Byte")) {
if (env.getValue() == null) {
value = Byte.valueOf((byte) 0);
} else {
value = Byte.decode(env.getValue());
}
} else if (type.equals("java.lang.Short")) {
if (env.getValue() == null) {
value = Short.valueOf((short) 0);
} else {
value = Short.decode(env.getValue());
}
} else if (type.equals("java.lang.Integer")) {
if (env.getValue() == null) {
value = Integer.valueOf(0);
} else {
value = Integer.decode(env.getValue());
}
} else if (type.equals("java.lang.Long")) {
if (env.getValue() == null) {
value = Long.valueOf(0);
} else {
value = Long.decode(env.getValue());
}
} else if (type.equals("java.lang.Boolean")) {
value = Boolean.valueOf(env.getValue());
} else if (type.equals("java.lang.Double")) {
if (env.getValue() == null) {
value = Double.valueOf(0);
} else {
value = Double.valueOf(env.getValue());
}
} else if (type.equals("java.lang.Float")) {
if (env.getValue() == null) {
value = Float.valueOf(0);
} else {
value = Float.valueOf(env.getValue());
}
} else if (type.equals("java.lang.Character")) {
if (env.getValue() == null) {
value = Character.valueOf((char) 0);
} else {
if (env.getValue().length() == 1) {
value = Character.valueOf(env.getValue().charAt(0));
} else {
throw new IllegalArgumentException();
}
}
} else {
log(sm.getString("naming.invalidEnvEntryType", env.getName()));
}
} catch (NumberFormatException e) {
log(sm.getString("naming.invalidEnvEntryValue", env.getName()));
} catch (IllegalArgumentException e) {
log(sm.getString("naming.invalidEnvEntryValue", env.getName()));
}
// Binding the object to the appropriate name
if (value != null) {
try {
if (debug >= 2)
log(" Adding environment entry " + env.getName());
createSubcontexts(envCtx, env.getName());
envCtx.bind(env.getName(), value);
} catch (NamingException e) {
log(sm.getString("naming.invalidEnvEntryValue", e));
}
}
}
/**
* Set the specified local EJBs in the naming context.
*/
public void addLocalEjb(ContextLocalEjb localEjb) {
}
/**
* Set the specified resources in the naming context.
*/
public void addResource(ContextResource resource) {
// Create a reference to the resource.
Reference ref = new ResourceRef
(resource.getType(), resource.getDescription(),
resource.getScope(), resource.getAuth());
// Adding the additional parameters, if any
addAdditionalParameters(resource.getNamingResources(), ref,
resource.getName());
try {
if (debug >= 2) {
log(" Adding resource ref " + resource.getName());
log(" " + ref);
}
createSubcontexts(envCtx, resource.getName());
envCtx.bind(resource.getName(), ref);
} catch (NamingException e) {
log(sm.getString("naming.bindFailed", e));
}
}
/**
* Set the specified resources in the naming context.
*/
public void addResourceEnvRef(String name, String type) {
// Create a reference to the resource env.
Reference ref = new ResourceEnvRef(type);
// Adding the additional parameters, if any
addAdditionalParameters(null, ref, name);
try {
if (debug >= 2)
log(" Adding resource env ref " + name);
createSubcontexts(envCtx, name);
envCtx.bind(name, ref);
} catch (NamingException e) {
log(sm.getString("naming.bindFailed", e));
}
}
/**
* Set the specified resource link in the naming context.
*/
public void addResourceLink(ContextResourceLink resourceLink) {
// Create a reference to the resource.
Reference ref = new ResourceLinkRef
(resourceLink.getType(), resourceLink.getGlobal());
// Adding the additional parameters, if any
addAdditionalParameters(resourceLink.getNamingResources(), ref,
resourceLink.getName());
try {
if (debug >= 2)
log(" Adding resource link " + resourceLink.getName());
createSubcontexts(envCtx, resourceLink.getName());
envCtx.bind(resourceLink.getName(), ref);
} catch (NamingException e) {
log(sm.getString("naming.bindFailed", e));
}
}
/**
* Set the specified EJBs in the naming context.
*/
public void removeEjb(String name) {
try {
envCtx.unbind(name);
} catch (NamingException e) {
log(sm.getString("naming.unbindFailed", e));
}
}
/**
* Set the specified environment entries in the naming context.
*/
public void removeEnvironment(String name) {
try {
envCtx.unbind(name);
} catch (NamingException e) {
log(sm.getString("naming.unbindFailed", e));
}
}
/**
* Set the specified local EJBs in the naming context.
*/
public void removeLocalEjb(String name) {
try {
envCtx.unbind(name);
} catch (NamingException e) {
log(sm.getString("naming.unbindFailed", e));
}
}
/**
* Set the specified resources in the naming context.
*/
public void removeResource(String name) {
try {
envCtx.unbind(name);
} catch (NamingException e) {
log(sm.getString("naming.unbindFailed", e));
}
}
/**
* Set the specified resources in the naming context.
*/
public void removeResourceEnvRef(String name) {
try {
envCtx.unbind(name);
} catch (NamingException e) {
log(sm.getString("naming.unbindFailed", e));
}
}
/**
* Set the specified resources in the naming context.
*/
public void removeResourceLink(String name) {
try {
envCtx.unbind(name);
} catch (NamingException e) {
log(sm.getString("naming.unbindFailed", e));
}
}
/**
* Create all intermediate subcontexts.
*/
private void createSubcontexts(javax.naming.Context ctx, String name)
throws NamingException {
javax.naming.Context currentContext = ctx;
StringTokenizer tokenizer = new StringTokenizer(name, "/");
while (tokenizer.hasMoreTokens()) {
String token = tokenizer.nextToken();
if ((!token.equals("")) && (tokenizer.hasMoreTokens())) {
try {
currentContext = currentContext.createSubcontext(token);
} catch (NamingException e) {
// Silent catch. Probably an object is already bound in
// the context.
currentContext =
(javax.naming.Context) currentContext.lookup(token);
}
}
}
}
/**
* Add additional parameters to the reference.
*/
private void addAdditionalParameters(NamingResources resources,
Reference ref, String name) {
if (resources == null) {
resources = namingResources;
}
ResourceParams resourceParameters = resources.findResourceParams(name);
if (debug >= 2)
log(" Resource parameters for " + name + " = " +
resourceParameters);
if (resourceParameters == null)
return;
Hashtable params = resourceParameters.getParameters();
Enumeration enumeration = params.keys();
while (enumeration.hasMoreElements()) {
String paramName = (String) enumeration.nextElement();
String paramValue = (String) params.get(paramName);
StringRefAddr refAddr = new StringRefAddr(paramName, paramValue);
ref.add(refAddr);
}
}
/**
* Log the specified message to our current Logger (if any).
*
* @param message Message to be logged
*/
protected void log(String message) {
if (!(container instanceof Container)) {
log.info(logName() + ": " + message);
return;
}
org.apache.catalina.Logger logger =
((Container) container).getLogger();
if (logger != null) {
logger.log(logName() + ": " + message);
} else {
log.info(logName() + ": " + message);
}
}
/**
* Log the specified message and exception to our current Logger
* (if any).
*
* @param message Message to be logged
* @param t Related exception
*/
protected void log(String message, Throwable t) {
if (!(container instanceof Container)) {
log.log(Level.WARNING, logName() + ": " + message, t);
return;
}
org.apache.catalina.Logger logger =
((Container) container).getLogger();
if (logger != null) {
logger.log(logName() + ": " + message, t,
org.apache.catalina.Logger.WARNING);
} else {
log.log(Level.WARNING, logName() + ": " + message, t);
}
}
/**
* Return the abbreviated name of this container for logging messsages
*/
protected String logName() {
String className = this.getClass().getName();
int period = className.lastIndexOf(".");
if (period >= 0)
className = className.substring(period + 1);
return (className + "[" + getName() + "]");
}
}
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