/*
* Copyright 2002-2008 the original author or authors.
*
* 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
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.mock.jndi;
import java.util.HashMap;
import java.util.Hashtable;
import java.util.Iterator;
import java.util.Map;
import javax.naming.Binding;
import javax.naming.Context;
import javax.naming.Name;
import javax.naming.NameClassPair;
import javax.naming.NameNotFoundException;
import javax.naming.NameParser;
import javax.naming.NamingEnumeration;
import javax.naming.NamingException;
import javax.naming.OperationNotSupportedException;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.util.StringUtils;
/**
* Simple implementation of a JNDI naming context.
* Only supports binding plain Objects to String names.
* Mainly for test environments, but also usable for standalone applications.
*
* <p>This class is not intended for direct usage by applications, although it
* can be used for example to override JndiTemplate's <code>createInitialContext</code>
* method in unit tests. Typically, SimpleNamingContextBuilder will be used to
* set up a JVM-level JNDI environment.
*
* @author Rod Johnson
* @author Juergen Hoeller
* @see org.springframework.mock.jndi.SimpleNamingContextBuilder
* @see org.springframework.jndi.JndiTemplate#createInitialContext
*/
public class SimpleNamingContext implements Context {
private final Log logger = LogFactory.getLog(getClass());
private final String root;
private final Hashtable boundObjects;
private final Hashtable environment = new Hashtable();
/**
* Create a new naming context.
*/
public SimpleNamingContext() {
this("");
}
/**
* Create a new naming context with the given naming root.
*/
public SimpleNamingContext(String root) {
this.root = root;
this.boundObjects = new Hashtable();
}
/**
* Create a new naming context with the given naming root,
* the given name/object map, and the JNDI environment entries.
*/
public SimpleNamingContext(String root, Hashtable boundObjects, Hashtable environment) {
this.root = root;
this.boundObjects = boundObjects;
if (environment != null) {
this.environment.putAll(environment);
}
}
// Actual implementations of Context methods follow
public NamingEnumeration list(String root) throws NamingException {
if (logger.isDebugEnabled()) {
logger.debug("Listing name/class pairs under [" + root + "]");
}
return new NameClassPairEnumeration(this, root);
}
public NamingEnumeration listBindings(String root) throws NamingException {
if (logger.isDebugEnabled()) {
logger.debug("Listing bindings under [" + root + "]");
}
return new BindingEnumeration(this, root);
}
/**
* Look up the object with the given name.
* <p>Note: Not intended for direct use by applications.
* Will be used by any standard InitialContext JNDI lookups.
* @throws javax.naming.NameNotFoundException if the object could not be found
*/
public Object lookup(String lookupName) throws NameNotFoundException {
String name = this.root + lookupName;
if (logger.isDebugEnabled()) {
logger.debug("Static JNDI lookup: [" + name + "]");
}
if ("".equals(name)) {
return new SimpleNamingContext(this.root, this.boundObjects, this.environment);
}
Object found = this.boundObjects.get(name);
if (found == null) {
if (!name.endsWith("/")) {
name = name + "/";
}
for (Iterator it = this.boundObjects.keySet().iterator(); it.hasNext();) {
String boundName = (String) it.next();
if (boundName.startsWith(name)) {
return new SimpleNamingContext(name, this.boundObjects, this.environment);
}
}
throw new NameNotFoundException(
"Name [" + this.root + lookupName + "] not bound; " + this.boundObjects.size() + " bindings: [" +
StringUtils.collectionToDelimitedString(this.boundObjects.keySet(), ",") + "]");
}
return found;
}
public Object lookupLink(String name) throws NameNotFoundException {
return lookup(name);
}
/**
* Bind the given object to the given name.
* Note: Not intended for direct use by applications
* if setting up a JVM-level JNDI environment.
* Use SimpleNamingContextBuilder to set up JNDI bindings then.
* @see org.springframework.mock.jndi.SimpleNamingContextBuilder#bind
*/
public void bind(String name, Object obj) {
if (logger.isInfoEnabled()) {
logger.info("Static JNDI binding: [" + this.root + name + "] = [" + obj + "]");
}
this.boundObjects.put(this.root + name, obj);
}
public void unbind(String name) {
if (logger.isInfoEnabled()) {
logger.info("Static JNDI remove: [" + this.root + name + "]");
}
this.boundObjects.remove(this.root + name);
}
public void rebind(String name, Object obj) {
bind(name, obj);
}
public void rename(String oldName, String newName) throws NameNotFoundException {
Object obj = lookup(oldName);
unbind(oldName);
bind(newName, obj);
}
public Context createSubcontext(String name) {
String subcontextName = this.root + name;
if (!subcontextName.endsWith("/")) {
subcontextName += "/";
}
Context subcontext = new SimpleNamingContext(subcontextName, this.boundObjects, this.environment);
bind(name, subcontext);
return subcontext;
}
public void destroySubcontext(String name) {
unbind(name);
}
public String composeName(String name, String prefix) {
return prefix + name;
}
public Hashtable getEnvironment() {
return this.environment;
}
public Object addToEnvironment(String propName, Object propVal) {
return this.environment.put(propName, propVal);
}
public Object removeFromEnvironment(String propName) {
return this.environment.remove(propName);
}
public void close() {
}
// Unsupported methods follow: no support for javax.naming.Name
public NamingEnumeration list(Name name) throws NamingException {
throw new OperationNotSupportedException("SimpleNamingContext does not support [javax.naming.Name]");
}
public NamingEnumeration listBindings(Name name) throws NamingException {
throw new OperationNotSupportedException("SimpleNamingContext does not support [javax.naming.Name]");
}
public Object lookup(Name name) throws NamingException {
throw new OperationNotSupportedException("SimpleNamingContext does not support [javax.naming.Name]");
}
public Object lookupLink(Name name) throws NamingException {
throw new OperationNotSupportedException("SimpleNamingContext does not support [javax.naming.Name]");
}
public void bind(Name name, Object obj) throws NamingException {
throw new OperationNotSupportedException("SimpleNamingContext does not support [javax.naming.Name]");
}
public void unbind(Name name) throws NamingException {
throw new OperationNotSupportedException("SimpleNamingContext does not support [javax.naming.Name]");
}
public void rebind(Name name, Object obj) throws NamingException {
throw new OperationNotSupportedException("SimpleNamingContext does not support [javax.naming.Name]");
}
public void rename(Name oldName, Name newName) throws NamingException {
throw new OperationNotSupportedException("SimpleNamingContext does not support [javax.naming.Name]");
}
public Context createSubcontext(Name name) throws NamingException {
throw new OperationNotSupportedException("SimpleNamingContext does not support [javax.naming.Name]");
}
public void destroySubcontext(Name name) throws NamingException {
throw new OperationNotSupportedException("SimpleNamingContext does not support [javax.naming.Name]");
}
public String getNameInNamespace() throws NamingException {
throw new OperationNotSupportedException("SimpleNamingContext does not support [javax.naming.Name]");
}
public NameParser getNameParser(Name name) throws NamingException {
throw new OperationNotSupportedException("SimpleNamingContext does not support [javax.naming.Name]");
}
public NameParser getNameParser(String name) throws NamingException {
throw new OperationNotSupportedException("SimpleNamingContext does not support [javax.naming.Name]");
}
public Name composeName(Name name, Name prefix) throws NamingException {
throw new OperationNotSupportedException("SimpleNamingContext does not support [javax.naming.Name]");
}
private static abstract class AbstractNamingEnumeration implements NamingEnumeration {
private Iterator iterator;
private AbstractNamingEnumeration(SimpleNamingContext context, String proot) throws NamingException {
if (!"".equals(proot) && !proot.endsWith("/")) {
proot = proot + "/";
}
String root = context.root + proot;
Map contents = new HashMap();
Iterator it = context.boundObjects.keySet().iterator();
while (it.hasNext()) {
String boundName = (String) it.next();
if (boundName.startsWith(root)) {
int startIndex = root.length();
int endIndex = boundName.indexOf('/', startIndex);
String strippedName =
(endIndex != -1 ? boundName.substring(startIndex, endIndex) : boundName.substring(startIndex));
if (!contents.containsKey(strippedName)) {
try {
contents.put(strippedName, createObject(strippedName, context.lookup(proot + strippedName)));
}
catch (NameNotFoundException ex) {
// cannot happen
}
}
}
}
if (contents.size() == 0) {
throw new NamingException("Invalid root: [" + context.root + proot + "]");
}
this.iterator = contents.values().iterator();
}
protected abstract Object createObject(String strippedName, Object obj);
public boolean hasMore() {
return this.iterator.hasNext();
}
public Object next() {
return this.iterator.next();
}
public boolean hasMoreElements() {
return this.iterator.hasNext();
}
public Object nextElement() {
return this.iterator.next();
}
public void close() {
}
}
private static class NameClassPairEnumeration extends AbstractNamingEnumeration {
private NameClassPairEnumeration(SimpleNamingContext context, String root) throws NamingException {
super(context, root);
}
protected Object createObject(String strippedName, Object obj) {
return new NameClassPair(strippedName, obj.getClass().getName());
}
}
private static class BindingEnumeration extends AbstractNamingEnumeration {
private BindingEnumeration(SimpleNamingContext context, String root) throws NamingException {
super(context, root);
}
protected Object createObject(String strippedName, Object obj) {
return new Binding(strippedName, obj);
}
}
}