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java/org/apache/naming/NamingContext.java
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970
java/org/apache/naming/NamingContext.java
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/*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.apache.naming;
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import java.util.Enumeration;
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import java.util.HashMap;
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import java.util.Hashtable;
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import javax.naming.Binding;
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import javax.naming.CompositeName;
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import javax.naming.Context;
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import javax.naming.InitialContext;
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import javax.naming.LinkRef;
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import javax.naming.Name;
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import javax.naming.NameAlreadyBoundException;
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import javax.naming.NameClassPair;
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import javax.naming.NameNotFoundException;
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import javax.naming.NameParser;
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import javax.naming.NamingEnumeration;
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import javax.naming.NamingException;
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import javax.naming.NotContextException;
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import javax.naming.OperationNotSupportedException;
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import javax.naming.Reference;
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import javax.naming.Referenceable;
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import javax.naming.spi.NamingManager;
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import org.apache.juli.logging.Log;
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import org.apache.juli.logging.LogFactory;
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/**
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* Catalina JNDI Context implementation.
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*
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* @author Remy Maucherat
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*/
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public class NamingContext implements Context {
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// -------------------------------------------------------------- Constants
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/**
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* Name parser for this context.
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*/
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protected static final NameParser nameParser = new NameParserImpl();
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private static final Log log = LogFactory.getLog(NamingContext.class);
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// ----------------------------------------------------------- Constructors
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/**
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* Builds a naming context.
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*
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* @param env The environment to use to construct the naming context
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* @param name The name of the associated Catalina Context
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*/
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public NamingContext(Hashtable<String,Object> env, String name) {
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this(env, name, new HashMap<String,NamingEntry>());
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}
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/**
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* Builds a naming context.
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*
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* @param env The environment to use to construct the naming context
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* @param name The name of the associated Catalina Context
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* @param bindings The initial bindings for the naming context
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*/
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public NamingContext(Hashtable<String,Object> env, String name,
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HashMap<String,NamingEntry> bindings) {
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this.env = new Hashtable<>();
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this.name = name;
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// Populating the environment hashtable
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if (env != null ) {
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Enumeration<String> envEntries = env.keys();
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while (envEntries.hasMoreElements()) {
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String entryName = envEntries.nextElement();
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addToEnvironment(entryName, env.get(entryName));
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}
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}
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this.bindings = bindings;
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}
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// ----------------------------------------------------- Instance Variables
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/**
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* Environment.
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*/
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protected final Hashtable<String,Object> env;
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/**
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* The string manager for this package.
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*/
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protected static final StringManager sm = StringManager.getManager(NamingContext.class);
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/**
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* Bindings in this Context.
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*/
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protected final HashMap<String,NamingEntry> bindings;
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/**
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* Name of the associated Catalina Context.
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*/
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protected final String name;
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/**
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* Determines if an attempt to write to a read-only context results in an
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* exception or if the request is ignored.
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*/
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private boolean exceptionOnFailedWrite = true;
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public boolean getExceptionOnFailedWrite() {
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return exceptionOnFailedWrite;
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}
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public void setExceptionOnFailedWrite(boolean exceptionOnFailedWrite) {
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this.exceptionOnFailedWrite = exceptionOnFailedWrite;
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}
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// -------------------------------------------------------- Context Methods
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/**
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* Retrieves the named object. If name is empty, returns a new instance
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* of this context (which represents the same naming context as this
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* context, but its environment may be modified independently and it may
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* be accessed concurrently).
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*
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* @param name the name of the object to look up
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* @return the object bound to name
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* @exception NamingException if a naming exception is encountered
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*/
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@Override
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public Object lookup(Name name)
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throws NamingException {
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return lookup(name, true);
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}
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/**
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* Retrieves the named object.
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*
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* @param name the name of the object to look up
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* @return the object bound to name
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* @exception NamingException if a naming exception is encountered
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*/
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@Override
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public Object lookup(String name)
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throws NamingException {
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return lookup(new CompositeName(name), true);
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}
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/**
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* Binds a name to an object. All intermediate contexts and the target
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* context (that named by all but terminal atomic component of the name)
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* must already exist.
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*
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* @param name the name to bind; may not be empty
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* @param obj the object to bind; possibly null
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* @exception NameAlreadyBoundException if name is already bound
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* @exception javax.naming.directory.InvalidAttributesException if object
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* did not supply all mandatory attributes
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* @exception NamingException if a naming exception is encountered
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*/
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@Override
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public void bind(Name name, Object obj)
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throws NamingException {
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bind(name, obj, false);
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}
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/**
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* Binds a name to an object.
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*
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* @param name the name to bind; may not be empty
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* @param obj the object to bind; possibly null
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* @exception NameAlreadyBoundException if name is already bound
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* @exception javax.naming.directory.InvalidAttributesException if object
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* did not supply all mandatory attributes
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* @exception NamingException if a naming exception is encountered
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*/
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@Override
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public void bind(String name, Object obj)
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throws NamingException {
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bind(new CompositeName(name), obj);
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}
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/**
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* Binds a name to an object, overwriting any existing binding. All
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* intermediate contexts and the target context (that named by all but
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* terminal atomic component of the name) must already exist.
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* <p>
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* If the object is a DirContext, any existing attributes associated with
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* the name are replaced with those of the object. Otherwise, any
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* existing attributes associated with the name remain unchanged.
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*
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* @param name the name to bind; may not be empty
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* @param obj the object to bind; possibly null
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* @exception javax.naming.directory.InvalidAttributesException if object
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* did not supply all mandatory attributes
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* @exception NamingException if a naming exception is encountered
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*/
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@Override
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public void rebind(Name name, Object obj)
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throws NamingException {
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bind(name, obj, true);
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}
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/**
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* Binds a name to an object, overwriting any existing binding.
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*
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* @param name the name to bind; may not be empty
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* @param obj the object to bind; possibly null
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* @exception javax.naming.directory.InvalidAttributesException if object
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* did not supply all mandatory attributes
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* @exception NamingException if a naming exception is encountered
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*/
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@Override
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public void rebind(String name, Object obj)
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throws NamingException {
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rebind(new CompositeName(name), obj);
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}
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/**
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* Unbinds the named object. Removes the terminal atomic name in name
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* from the target context--that named by all but the terminal atomic
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* part of name.
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* <p>
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* This method is idempotent. It succeeds even if the terminal atomic
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* name is not bound in the target context, but throws
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* NameNotFoundException if any of the intermediate contexts do not exist.
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*
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* @param name the name to bind; may not be empty
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* @exception NameNotFoundException if an intermediate context does not
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* exist
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* @exception NamingException if a naming exception is encountered
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*/
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@Override
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public void unbind(Name name) throws NamingException {
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if (!checkWritable()) {
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return;
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}
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while ((!name.isEmpty()) && (name.get(0).length() == 0))
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name = name.getSuffix(1);
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if (name.isEmpty())
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throw new NamingException
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(sm.getString("namingContext.invalidName"));
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NamingEntry entry = bindings.get(name.get(0));
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if (entry == null) {
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throw new NameNotFoundException
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(sm.getString("namingContext.nameNotBound", name, name.get(0)));
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}
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if (name.size() > 1) {
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if (entry.type == NamingEntry.CONTEXT) {
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((Context) entry.value).unbind(name.getSuffix(1));
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} else {
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throw new NamingException
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(sm.getString("namingContext.contextExpected"));
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}
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} else {
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bindings.remove(name.get(0));
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}
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}
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/**
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* Unbinds the named object.
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*
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* @param name the name to bind; may not be empty
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* @exception NameNotFoundException if an intermediate context does not
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* exist
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* @exception NamingException if a naming exception is encountered
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*/
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@Override
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public void unbind(String name)
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throws NamingException {
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unbind(new CompositeName(name));
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}
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/**
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* Binds a new name to the object bound to an old name, and unbinds the
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* old name. Both names are relative to this context. Any attributes
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* associated with the old name become associated with the new name.
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* Intermediate contexts of the old name are not changed.
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*
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* @param oldName the name of the existing binding; may not be empty
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* @param newName the name of the new binding; may not be empty
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* @exception NameAlreadyBoundException if newName is already bound
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* @exception NamingException if a naming exception is encountered
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*/
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@Override
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public void rename(Name oldName, Name newName)
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throws NamingException {
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Object value = lookup(oldName);
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bind(newName, value);
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unbind(oldName);
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}
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/**
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* Binds a new name to the object bound to an old name, and unbinds the
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* old name.
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*
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* @param oldName the name of the existing binding; may not be empty
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* @param newName the name of the new binding; may not be empty
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* @exception NameAlreadyBoundException if newName is already bound
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* @exception NamingException if a naming exception is encountered
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*/
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@Override
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public void rename(String oldName, String newName)
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throws NamingException {
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rename(new CompositeName(oldName), new CompositeName(newName));
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}
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/**
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* Enumerates the names bound in the named context, along with the class
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* names of objects bound to them. The contents of any subcontexts are
|
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* not included.
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* <p>
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* If a binding is added to or removed from this context, its effect on
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* an enumeration previously returned is undefined.
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*
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* @param name the name of the context to list
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* @return an enumeration of the names and class names of the bindings in
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* this context. Each element of the enumeration is of type NameClassPair.
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* @exception NamingException if a naming exception is encountered
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*/
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@Override
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public NamingEnumeration<NameClassPair> list(Name name)
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throws NamingException {
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// Removing empty parts
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while ((!name.isEmpty()) && (name.get(0).length() == 0))
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name = name.getSuffix(1);
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if (name.isEmpty()) {
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return new NamingContextEnumeration(bindings.values().iterator());
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}
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NamingEntry entry = bindings.get(name.get(0));
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if (entry == null) {
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throw new NameNotFoundException
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(sm.getString("namingContext.nameNotBound", name, name.get(0)));
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}
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if (entry.type != NamingEntry.CONTEXT) {
|
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throw new NamingException
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(sm.getString("namingContext.contextExpected"));
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}
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return ((Context) entry.value).list(name.getSuffix(1));
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}
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/**
|
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* Enumerates the names bound in the named context, along with the class
|
||||
* names of objects bound to them.
|
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*
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* @param name the name of the context to list
|
||||
* @return an enumeration of the names and class names of the bindings in
|
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* this context. Each element of the enumeration is of type NameClassPair.
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* @exception NamingException if a naming exception is encountered
|
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*/
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@Override
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public NamingEnumeration<NameClassPair> list(String name)
|
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throws NamingException {
|
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return list(new CompositeName(name));
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Enumerates the names bound in the named context, along with the
|
||||
* objects bound to them. The contents of any subcontexts are not
|
||||
* included.
|
||||
* <p>
|
||||
* If a binding is added to or removed from this context, its effect on
|
||||
* an enumeration previously returned is undefined.
|
||||
*
|
||||
* @param name the name of the context to list
|
||||
* @return an enumeration of the bindings in this context.
|
||||
* Each element of the enumeration is of type Binding.
|
||||
* @exception NamingException if a naming exception is encountered
|
||||
*/
|
||||
@Override
|
||||
public NamingEnumeration<Binding> listBindings(Name name)
|
||||
throws NamingException {
|
||||
// Removing empty parts
|
||||
while ((!name.isEmpty()) && (name.get(0).length() == 0))
|
||||
name = name.getSuffix(1);
|
||||
if (name.isEmpty()) {
|
||||
return new NamingContextBindingsEnumeration(bindings.values().iterator(), this);
|
||||
}
|
||||
|
||||
NamingEntry entry = bindings.get(name.get(0));
|
||||
|
||||
if (entry == null) {
|
||||
throw new NameNotFoundException
|
||||
(sm.getString("namingContext.nameNotBound", name, name.get(0)));
|
||||
}
|
||||
|
||||
if (entry.type != NamingEntry.CONTEXT) {
|
||||
throw new NamingException
|
||||
(sm.getString("namingContext.contextExpected"));
|
||||
}
|
||||
return ((Context) entry.value).listBindings(name.getSuffix(1));
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Enumerates the names bound in the named context, along with the
|
||||
* objects bound to them.
|
||||
*
|
||||
* @param name the name of the context to list
|
||||
* @return an enumeration of the bindings in this context.
|
||||
* Each element of the enumeration is of type Binding.
|
||||
* @exception NamingException if a naming exception is encountered
|
||||
*/
|
||||
@Override
|
||||
public NamingEnumeration<Binding> listBindings(String name)
|
||||
throws NamingException {
|
||||
return listBindings(new CompositeName(name));
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Destroys the named context and removes it from the namespace. Any
|
||||
* attributes associated with the name are also removed. Intermediate
|
||||
* contexts are not destroyed.
|
||||
* <p>
|
||||
* This method is idempotent. It succeeds even if the terminal atomic
|
||||
* name is not bound in the target context, but throws
|
||||
* NameNotFoundException if any of the intermediate contexts do not exist.
|
||||
*
|
||||
* In a federated naming system, a context from one naming system may be
|
||||
* bound to a name in another. One can subsequently look up and perform
|
||||
* operations on the foreign context using a composite name. However, an
|
||||
* attempt destroy the context using this composite name will fail with
|
||||
* NotContextException, because the foreign context is not a "subcontext"
|
||||
* of the context in which it is bound. Instead, use unbind() to remove
|
||||
* the binding of the foreign context. Destroying the foreign context
|
||||
* requires that the destroySubcontext() be performed on a context from
|
||||
* the foreign context's "native" naming system.
|
||||
*
|
||||
* @param name the name of the context to be destroyed; may not be empty
|
||||
* @exception NameNotFoundException if an intermediate context does not
|
||||
* exist
|
||||
* @exception NotContextException if the name is bound but does not name
|
||||
* a context, or does not name a context of the appropriate type
|
||||
*/
|
||||
@Override
|
||||
public void destroySubcontext(Name name) throws NamingException {
|
||||
|
||||
if (!checkWritable()) {
|
||||
return;
|
||||
}
|
||||
|
||||
while ((!name.isEmpty()) && (name.get(0).length() == 0))
|
||||
name = name.getSuffix(1);
|
||||
if (name.isEmpty())
|
||||
throw new NamingException
|
||||
(sm.getString("namingContext.invalidName"));
|
||||
|
||||
NamingEntry entry = bindings.get(name.get(0));
|
||||
|
||||
if (entry == null) {
|
||||
throw new NameNotFoundException
|
||||
(sm.getString("namingContext.nameNotBound", name, name.get(0)));
|
||||
}
|
||||
|
||||
if (name.size() > 1) {
|
||||
if (entry.type == NamingEntry.CONTEXT) {
|
||||
((Context) entry.value).destroySubcontext(name.getSuffix(1));
|
||||
} else {
|
||||
throw new NamingException
|
||||
(sm.getString("namingContext.contextExpected"));
|
||||
}
|
||||
} else {
|
||||
if (entry.type == NamingEntry.CONTEXT) {
|
||||
((Context) entry.value).close();
|
||||
bindings.remove(name.get(0));
|
||||
} else {
|
||||
throw new NotContextException
|
||||
(sm.getString("namingContext.contextExpected"));
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Destroys the named context and removes it from the namespace.
|
||||
*
|
||||
* @param name the name of the context to be destroyed; may not be empty
|
||||
* @exception NameNotFoundException if an intermediate context does not
|
||||
* exist
|
||||
* @exception NotContextException if the name is bound but does not name
|
||||
* a context, or does not name a context of the appropriate type
|
||||
*/
|
||||
@Override
|
||||
public void destroySubcontext(String name)
|
||||
throws NamingException {
|
||||
destroySubcontext(new CompositeName(name));
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Creates and binds a new context. Creates a new context with the given
|
||||
* name and binds it in the target context (that named by all but
|
||||
* terminal atomic component of the name). All intermediate contexts and
|
||||
* the target context must already exist.
|
||||
*
|
||||
* @param name the name of the context to create; may not be empty
|
||||
* @return the newly created context
|
||||
* @exception NameAlreadyBoundException if name is already bound
|
||||
* @exception javax.naming.directory.InvalidAttributesException if creation
|
||||
* of the sub-context requires specification of mandatory attributes
|
||||
* @exception NamingException if a naming exception is encountered
|
||||
*/
|
||||
@Override
|
||||
public Context createSubcontext(Name name) throws NamingException {
|
||||
if (!checkWritable()) {
|
||||
return null;
|
||||
}
|
||||
|
||||
NamingContext newContext = new NamingContext(env, this.name);
|
||||
bind(name, newContext);
|
||||
|
||||
newContext.setExceptionOnFailedWrite(getExceptionOnFailedWrite());
|
||||
|
||||
return newContext;
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Creates and binds a new context.
|
||||
*
|
||||
* @param name the name of the context to create; may not be empty
|
||||
* @return the newly created context
|
||||
* @exception NameAlreadyBoundException if name is already bound
|
||||
* @exception javax.naming.directory.InvalidAttributesException if creation
|
||||
* of the sub-context requires specification of mandatory attributes
|
||||
* @exception NamingException if a naming exception is encountered
|
||||
*/
|
||||
@Override
|
||||
public Context createSubcontext(String name)
|
||||
throws NamingException {
|
||||
return createSubcontext(new CompositeName(name));
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Retrieves the named object, following links except for the terminal
|
||||
* atomic component of the name. If the object bound to name is not a
|
||||
* link, returns the object itself.
|
||||
*
|
||||
* @param name the name of the object to look up
|
||||
* @return the object bound to name, not following the terminal link
|
||||
* (if any).
|
||||
* @exception NamingException if a naming exception is encountered
|
||||
*/
|
||||
@Override
|
||||
public Object lookupLink(Name name)
|
||||
throws NamingException {
|
||||
return lookup(name, false);
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Retrieves the named object, following links except for the terminal
|
||||
* atomic component of the name.
|
||||
*
|
||||
* @param name the name of the object to look up
|
||||
* @return the object bound to name, not following the terminal link
|
||||
* (if any).
|
||||
* @exception NamingException if a naming exception is encountered
|
||||
*/
|
||||
@Override
|
||||
public Object lookupLink(String name)
|
||||
throws NamingException {
|
||||
return lookup(new CompositeName(name), false);
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Retrieves the parser associated with the named context. In a
|
||||
* federation of namespaces, different naming systems will parse names
|
||||
* differently. This method allows an application to get a parser for
|
||||
* parsing names into their atomic components using the naming convention
|
||||
* of a particular naming system. Within any single naming system,
|
||||
* NameParser objects returned by this method must be equal (using the
|
||||
* equals() test).
|
||||
*
|
||||
* @param name the name of the context from which to get the parser
|
||||
* @return a name parser that can parse compound names into their atomic
|
||||
* components
|
||||
* @exception NamingException if a naming exception is encountered
|
||||
*/
|
||||
@Override
|
||||
public NameParser getNameParser(Name name)
|
||||
throws NamingException {
|
||||
|
||||
while ((!name.isEmpty()) && (name.get(0).length() == 0))
|
||||
name = name.getSuffix(1);
|
||||
if (name.isEmpty())
|
||||
return nameParser;
|
||||
|
||||
if (name.size() > 1) {
|
||||
Object obj = bindings.get(name.get(0));
|
||||
if (obj instanceof Context) {
|
||||
return ((Context) obj).getNameParser(name.getSuffix(1));
|
||||
} else {
|
||||
throw new NotContextException
|
||||
(sm.getString("namingContext.contextExpected"));
|
||||
}
|
||||
}
|
||||
|
||||
return nameParser;
|
||||
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Retrieves the parser associated with the named context.
|
||||
*
|
||||
* @param name the name of the context from which to get the parser
|
||||
* @return a name parser that can parse compound names into their atomic
|
||||
* components
|
||||
* @exception NamingException if a naming exception is encountered
|
||||
*/
|
||||
@Override
|
||||
public NameParser getNameParser(String name)
|
||||
throws NamingException {
|
||||
return getNameParser(new CompositeName(name));
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Composes the name of this context with a name relative to this context.
|
||||
* <p>
|
||||
* Given a name (name) relative to this context, and the name (prefix)
|
||||
* of this context relative to one of its ancestors, this method returns
|
||||
* the composition of the two names using the syntax appropriate for the
|
||||
* naming system(s) involved. That is, if name names an object relative
|
||||
* to this context, the result is the name of the same object, but
|
||||
* relative to the ancestor context. None of the names may be null.
|
||||
*
|
||||
* @param name a name relative to this context
|
||||
* @param prefix the name of this context relative to one of its ancestors
|
||||
* @return the composition of prefix and name
|
||||
* @exception NamingException if a naming exception is encountered
|
||||
*/
|
||||
@Override
|
||||
public Name composeName(Name name, Name prefix) throws NamingException {
|
||||
prefix = (Name) prefix.clone();
|
||||
return prefix.addAll(name);
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Composes the name of this context with a name relative to this context.
|
||||
*
|
||||
* @param name a name relative to this context
|
||||
* @param prefix the name of this context relative to one of its ancestors
|
||||
* @return the composition of prefix and name
|
||||
*/
|
||||
@Override
|
||||
public String composeName(String name, String prefix) {
|
||||
return prefix + "/" + name;
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Adds a new environment property to the environment of this context. If
|
||||
* the property already exists, its value is overwritten.
|
||||
*
|
||||
* @param propName the name of the environment property to add; may not
|
||||
* be null
|
||||
* @param propVal the value of the property to add; may not be null
|
||||
*/
|
||||
@Override
|
||||
public Object addToEnvironment(String propName, Object propVal) {
|
||||
return env.put(propName, propVal);
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Removes an environment property from the environment of this context.
|
||||
*
|
||||
* @param propName the name of the environment property to remove;
|
||||
* may not be null
|
||||
*/
|
||||
@Override
|
||||
public Object removeFromEnvironment(String propName){
|
||||
return env.remove(propName);
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Retrieves the environment in effect for this context. See class
|
||||
* description for more details on environment properties.
|
||||
* The caller should not make any changes to the object returned: their
|
||||
* effect on the context is undefined. The environment of this context
|
||||
* may be changed using addToEnvironment() and removeFromEnvironment().
|
||||
*
|
||||
* @return the environment of this context; never null
|
||||
*/
|
||||
@Override
|
||||
public Hashtable<?,?> getEnvironment() {
|
||||
return env;
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Closes this context. This method releases this context's resources
|
||||
* immediately, instead of waiting for them to be released automatically
|
||||
* by the garbage collector.
|
||||
* This method is idempotent: invoking it on a context that has already
|
||||
* been closed has no effect. Invoking any other method on a closed
|
||||
* context is not allowed, and results in undefined behaviour.
|
||||
*
|
||||
* @exception NamingException if a naming exception is encountered
|
||||
*/
|
||||
@Override
|
||||
public void close() throws NamingException {
|
||||
if (!checkWritable()) {
|
||||
return;
|
||||
}
|
||||
env.clear();
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Retrieves the full name of this context within its own namespace.
|
||||
* <p>
|
||||
* Many naming services have a notion of a "full name" for objects in
|
||||
* their respective namespaces. For example, an LDAP entry has a
|
||||
* distinguished name, and a DNS record has a fully qualified name. This
|
||||
* method allows the client application to retrieve this name. The string
|
||||
* returned by this method is not a JNDI composite name and should not be
|
||||
* passed directly to context methods. In naming systems for which the
|
||||
* notion of full name does not make sense,
|
||||
* OperationNotSupportedException is thrown.
|
||||
*
|
||||
* @return this context's name in its own namespace; never null
|
||||
* @exception OperationNotSupportedException if the naming system does
|
||||
* not have the notion of a full name
|
||||
* @exception NamingException if a naming exception is encountered
|
||||
*/
|
||||
@Override
|
||||
public String getNameInNamespace()
|
||||
throws NamingException {
|
||||
throw new OperationNotSupportedException
|
||||
(sm.getString("namingContext.noAbsoluteName"));
|
||||
//FIXME ?
|
||||
}
|
||||
|
||||
|
||||
// ------------------------------------------------------ Protected Methods
|
||||
|
||||
|
||||
/**
|
||||
* Retrieves the named object.
|
||||
*
|
||||
* @param name the name of the object to look up
|
||||
* @param resolveLinks If true, the links will be resolved
|
||||
* @return the object bound to name
|
||||
* @exception NamingException if a naming exception is encountered
|
||||
*/
|
||||
protected Object lookup(Name name, boolean resolveLinks)
|
||||
throws NamingException {
|
||||
|
||||
// Removing empty parts
|
||||
while ((!name.isEmpty()) && (name.get(0).length() == 0))
|
||||
name = name.getSuffix(1);
|
||||
if (name.isEmpty()) {
|
||||
// If name is empty, a newly allocated naming context is returned
|
||||
return new NamingContext(env, this.name, bindings);
|
||||
}
|
||||
|
||||
NamingEntry entry = bindings.get(name.get(0));
|
||||
|
||||
if (entry == null) {
|
||||
throw new NameNotFoundException
|
||||
(sm.getString("namingContext.nameNotBound", name, name.get(0)));
|
||||
}
|
||||
|
||||
if (name.size() > 1) {
|
||||
// If the size of the name is greater that 1, then we go through a
|
||||
// number of subcontexts.
|
||||
if (entry.type != NamingEntry.CONTEXT) {
|
||||
throw new NamingException
|
||||
(sm.getString("namingContext.contextExpected"));
|
||||
}
|
||||
return ((Context) entry.value).lookup(name.getSuffix(1));
|
||||
} else {
|
||||
if ((resolveLinks) && (entry.type == NamingEntry.LINK_REF)) {
|
||||
String link = ((LinkRef) entry.value).getLinkName();
|
||||
if (link.startsWith(".")) {
|
||||
// Link relative to this context
|
||||
return lookup(link.substring(1));
|
||||
} else {
|
||||
return new InitialContext(env).lookup(link);
|
||||
}
|
||||
} else if (entry.type == NamingEntry.REFERENCE) {
|
||||
try {
|
||||
Object obj = NamingManager.getObjectInstance
|
||||
(entry.value, name, this, env);
|
||||
if(entry.value instanceof ResourceRef) {
|
||||
boolean singleton = Boolean.parseBoolean(
|
||||
(String) ((ResourceRef) entry.value).get(
|
||||
"singleton").getContent());
|
||||
if (singleton) {
|
||||
entry.type = NamingEntry.ENTRY;
|
||||
entry.value = obj;
|
||||
}
|
||||
}
|
||||
return obj;
|
||||
} catch (NamingException e) {
|
||||
throw e;
|
||||
} catch (Exception e) {
|
||||
String msg = sm.getString("namingContext.failResolvingReference");
|
||||
log.warn(msg, e);
|
||||
NamingException ne = new NamingException(msg);
|
||||
ne.initCause(e);
|
||||
throw ne;
|
||||
}
|
||||
} else {
|
||||
return entry.value;
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Binds a name to an object. All intermediate contexts and the target
|
||||
* context (that named by all but terminal atomic component of the name)
|
||||
* must already exist.
|
||||
*
|
||||
* @param name the name to bind; may not be empty
|
||||
* @param obj the object to bind; possibly null
|
||||
* @param rebind if true, then perform a rebind (ie, overwrite)
|
||||
* @exception NameAlreadyBoundException if name is already bound
|
||||
* @exception javax.naming.directory.InvalidAttributesException if object
|
||||
* did not supply all mandatory attributes
|
||||
* @exception NamingException if a naming exception is encountered
|
||||
*/
|
||||
protected void bind(Name name, Object obj, boolean rebind)
|
||||
throws NamingException {
|
||||
|
||||
if (!checkWritable()) {
|
||||
return;
|
||||
}
|
||||
|
||||
while ((!name.isEmpty()) && (name.get(0).length() == 0))
|
||||
name = name.getSuffix(1);
|
||||
if (name.isEmpty())
|
||||
throw new NamingException
|
||||
(sm.getString("namingContext.invalidName"));
|
||||
|
||||
NamingEntry entry = bindings.get(name.get(0));
|
||||
|
||||
if (name.size() > 1) {
|
||||
if (entry == null) {
|
||||
throw new NameNotFoundException(sm.getString(
|
||||
"namingContext.nameNotBound", name, name.get(0)));
|
||||
}
|
||||
if (entry.type == NamingEntry.CONTEXT) {
|
||||
if (rebind) {
|
||||
((Context) entry.value).rebind(name.getSuffix(1), obj);
|
||||
} else {
|
||||
((Context) entry.value).bind(name.getSuffix(1), obj);
|
||||
}
|
||||
} else {
|
||||
throw new NamingException
|
||||
(sm.getString("namingContext.contextExpected"));
|
||||
}
|
||||
} else {
|
||||
if ((!rebind) && (entry != null)) {
|
||||
throw new NameAlreadyBoundException
|
||||
(sm.getString("namingContext.alreadyBound", name.get(0)));
|
||||
} else {
|
||||
// Getting the type of the object and wrapping it within a new
|
||||
// NamingEntry
|
||||
Object toBind =
|
||||
NamingManager.getStateToBind(obj, name, this, env);
|
||||
if (toBind instanceof Context) {
|
||||
entry = new NamingEntry(name.get(0), toBind,
|
||||
NamingEntry.CONTEXT);
|
||||
} else if (toBind instanceof LinkRef) {
|
||||
entry = new NamingEntry(name.get(0), toBind,
|
||||
NamingEntry.LINK_REF);
|
||||
} else if (toBind instanceof Reference) {
|
||||
entry = new NamingEntry(name.get(0), toBind,
|
||||
NamingEntry.REFERENCE);
|
||||
} else if (toBind instanceof Referenceable) {
|
||||
toBind = ((Referenceable) toBind).getReference();
|
||||
entry = new NamingEntry(name.get(0), toBind,
|
||||
NamingEntry.REFERENCE);
|
||||
} else {
|
||||
entry = new NamingEntry(name.get(0), toBind,
|
||||
NamingEntry.ENTRY);
|
||||
}
|
||||
bindings.put(name.get(0), entry);
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* @return <code>true</code> if writing is allowed on this context.
|
||||
*/
|
||||
protected boolean isWritable() {
|
||||
return ContextAccessController.isWritable(name);
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Throws a naming exception is Context is not writable.
|
||||
* @return <code>true</code> if the Context is writable
|
||||
* @throws NamingException if the Context is not writable and
|
||||
* <code>exceptionOnFailedWrite</code> is <code>true</code>
|
||||
*/
|
||||
protected boolean checkWritable() throws NamingException {
|
||||
if (isWritable()) {
|
||||
return true;
|
||||
} else {
|
||||
if (exceptionOnFailedWrite) {
|
||||
throw new javax.naming.OperationNotSupportedException(
|
||||
sm.getString("namingContext.readOnly"));
|
||||
}
|
||||
}
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user