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org.openmdx.kernel.lightweight.naming.spi.DelegatingContext Maven / Gradle / Ivy
/*
* ====================================================================
* Project: openMDX, http://www.openmdx.org/
* Description: DelegatingContext
* Owner: OMEX AG, Switzerland, http://www.omex.ch
* ====================================================================
*
* This software is published under the BSD license as listed below.
*
* Copyright (c) 2004-2009, OMEX AG, Switzerland
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* * Neither the name of the openMDX team nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
* ------------------
*
* This product includes software developed by other organizations as
* listed in the NOTICE file.
*/
package org.openmdx.kernel.lightweight.naming.spi;
import java.util.Hashtable;
import javax.naming.Binding;
import javax.naming.Context;
import javax.naming.Name;
import javax.naming.NameClassPair;
import javax.naming.NameParser;
import javax.naming.NamingEnumeration;
import javax.naming.NamingException;
/**
* DelegatingContext
*/
public class DelegatingContext implements Context {
/**
* Constructor
*/
private DelegatingContext(
Hashtable environment,
Context context
){
this.environment = environment == null ? null : new Hashtable(environment);
this.context = context;
}
/**
* Constructor
*
* @param environment
*/
protected DelegatingContext(
Hashtable environment
){
this(environment, null);
}
/**
* Constructor
*/
public DelegatingContext(
Context context
){
this(null, context);
}
/**
* This Context's provate environment
*/
private Hashtable environment;
/**
* This Context's delegate
*/
private Context context;
/**
* The delegate has to be provided by a subclass
*
* @return the delegate
*
* @throws javax.naming.NamingException
*/
protected Context getDelegate(
) throws NamingException {
return this.context;
}
/**
* Set the delegate
*
* @param context
* @throws NamingException
*/
protected void setDelegate(
Context context
) throws NamingException {
this.context = context;
}
/**
* Retrieve the environment
*
* @return an environment not affecting the original one
*
* @throws NamingException
*/
@SuppressWarnings("unchecked")
private Hashtable environment(
) throws NamingException {
return this.environment == null ?
this.environment = (Hashtable) getDelegate().getEnvironment() :
this.environment;
}
/* (non-Javadoc)
* @see javax.naming.Context#addToEnvironment(java.lang.String, java.lang.Object)
*/
public Object addToEnvironment(
String propName,
Object propVal
) throws NamingException {
return environment().put(propName, propVal);
}
/* (non-Javadoc)
* @see javax.naming.Context#bind(java.lang.String, java.lang.Object)
*/
public void bind(
String name,
Object obj
) throws NamingException {
getDelegate().bind(name, obj);
}
/* (non-Javadoc)
* @see javax.naming.Context#bind(javax.naming.Name, java.lang.Object)
*/
public void bind(
Name name,
Object obj
) throws NamingException {
getDelegate().bind(name, obj);
}
/* (non-Javadoc)
* @see javax.naming.Context#close()
*/
public void close(
) throws NamingException {
this.environment = null;
this.context = null;
}
/* (non-Javadoc)
* @see javax.naming.Context#composeName(java.lang.String, java.lang.String)
*/
public String composeName(
String name,
String prefix
) throws NamingException {
return getDelegate().composeName(name, prefix);
}
/* (non-Javadoc)
* @see javax.naming.Context#composeName(javax.naming.Name, javax.naming.Name)
*/
public Name composeName(
Name name,
Name prefix
) throws NamingException {
return getDelegate().composeName(name, prefix);
}
/* (non-Javadoc)
* @see javax.naming.Context#createSubcontext(java.lang.String)
*/
public Context createSubcontext(
String name
) throws NamingException {
return getDelegate().createSubcontext(name);
}
/* (non-Javadoc)
* @see javax.naming.Context#createSubcontext(javax.naming.Name)
*/
public Context createSubcontext(
Name name
) throws NamingException {
return getDelegate().createSubcontext(name);
}
/* (non-Javadoc)
* @see javax.naming.Context#destroySubcontext(java.lang.String)
*/
public void destroySubcontext(
String name
) throws NamingException {
getDelegate().destroySubcontext(name);
}
/* (non-Javadoc)
* @see javax.naming.Context#destroySubcontext(javax.naming.Name)
*/
public void destroySubcontext(
Name name
) throws NamingException {
getDelegate().destroySubcontext(name);
}
/* (non-Javadoc)
* @see javax.naming.Context#getEnvironment()
*/
public Hashtable getEnvironment(
) throws NamingException {
return new Hashtable(environment());
}
/* (non-Javadoc)
* @see javax.naming.Context#getNameInNamespace()
*/
public String getNameInNamespace(
) throws NamingException {
return getDelegate().getNameInNamespace();
}
/* (non-Javadoc)
* @see javax.naming.Context#getNameParser(java.lang.String)
*/
public NameParser getNameParser(
String name
) throws NamingException {
return getDelegate().getNameParser(name);
}
/* (non-Javadoc)
* @see javax.naming.Context#getNameParser(javax.naming.Name)
*/
public NameParser getNameParser(
Name name
) throws NamingException {
return getDelegate().getNameParser(name);
}
/* (non-Javadoc)
* @see javax.naming.Context#list(java.lang.String)
*/
public NamingEnumeration list(
String name
) throws NamingException {
return getDelegate().list(name);
}
/* (non-Javadoc)
* @see javax.naming.Context#list(javax.naming.Name)
*/
public NamingEnumeration list(Name name) throws NamingException {
return getDelegate().list(name);
}
/* (non-Javadoc)
* @see javax.naming.Context#listBindings(java.lang.String)
*/
public NamingEnumeration listBindings(
String name
) throws NamingException {
return getDelegate().listBindings(name);
}
/* (non-Javadoc)
* @see javax.naming.Context#listBindings(javax.naming.Name)
*/
public NamingEnumeration listBindings(
Name name
) throws NamingException {
return getDelegate().listBindings(name);
}
/* (non-Javadoc)
* @see javax.naming.Context#lookup(java.lang.String)
*/
public Object lookup(
String name
) throws NamingException {
return "".equals(name) ?
new DelegatingContext(this.environment, this.context) :
getDelegate().lookup(name);
}
/* (non-Javadoc)
* @see javax.naming.Context#lookup(javax.naming.Name)
*/
public Object lookup(Name name) throws NamingException {
return name.isEmpty() ?
new DelegatingContext(this.environment, this.context) :
getDelegate().lookup(name);
}
/* (non-Javadoc)
* @see javax.naming.Context#lookupLink(java.lang.String)
*/
public Object lookupLink(
String name
) throws NamingException {
return getDelegate().lookupLink(name);
}
/* (non-Javadoc)
* @see javax.naming.Context#lookupLink(javax.naming.Name)
*/
public Object lookupLink(
Name name
) throws NamingException {
return getDelegate().lookupLink(name);
}
/* (non-Javadoc)
* @see javax.naming.Context#rebind(java.lang.String, java.lang.Object)
*/
public void rebind(
String name,
Object obj
) throws NamingException {
getDelegate().rebind(name, obj);
}
/* (non-Javadoc)
* @see javax.naming.Context#rebind(javax.naming.Name, java.lang.Object)
*/
public void rebind(
Name name,
Object obj
) throws NamingException {
getDelegate().rebind(name, obj);
}
/* (non-Javadoc)
* @see javax.naming.Context#removeFromEnvironment(java.lang.String)
*/
public Object removeFromEnvironment(
String propName
) throws NamingException {
return environment().remove(propName);
}
/* (non-Javadoc)
* @see javax.naming.Context#rename(java.lang.String, java.lang.String)
*/
public void rename(
String oldName,
String newName
) throws NamingException {
getDelegate().rename(oldName, newName);
}
/* (non-Javadoc)
* @see javax.naming.Context#rename(javax.naming.Name, javax.naming.Name)
*/
public void rename(
Name oldName,
Name newName
) throws NamingException {
getDelegate().rename(oldName, newName);
}
/* (non-Javadoc)
* @see java.lang.Object#toString()
*/
@Override
public String toString(){
try {
return getDelegate().toString();
} catch (NamingException e) {
return super.toString();
}
}
/* (non-Javadoc)
* @see javax.naming.Context#unbind(java.lang.String)
*/
public void unbind(
String name
) throws NamingException {
getDelegate().unbind(name);
}
/* (non-Javadoc)
* @see javax.naming.Context#unbind(javax.naming.Name)
*/
public void unbind(
Name name
) throws NamingException {
getDelegate().unbind(name);
}
/* (non-Javadoc)
* @see java.lang.Object#equals(java.lang.Object)
*/
@Override
public boolean equals(Object obj) {
if(obj == null || this.getClass() != obj.getClass()) return false;
DelegatingContext that = (DelegatingContext) obj;
try {
return this.getDelegate().equals(that.getDelegate()) &&
this.getEnvironment().equals(that.getEnvironment());
} catch (NamingException exception) {
return false;
}
}
/* (non-Javadoc)
* @see java.lang.Object#hashCode()
*/
@Override
public int hashCode() {
try {
return getDelegate().hashCode();
} catch (NamingException e) {
return super.hashCode();
}
}
}
