Java tutorial
/* * JBoss, Home of Professional Open Source * Copyright 2005, JBoss Inc., and individual contributors as indicated * by the @authors tag. See the copyright.txt in the distribution for a * full listing of individual contributors. * * This is free software; you can redistribute it and/or modify it * under the terms of the GNU Lesser General Public License as * published by the Free Software Foundation; either version 2.1 of * the License, or (at your option) any later version. * * This software is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this software; if not, write to the Free * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA * 02110-1301 USA, or see the FSF site: http://www.fsf.org. */ import java.util.Hashtable; import javax.naming.Context; import javax.naming.Name; import javax.naming.NameParser; import javax.naming.NamingEnumeration; import javax.naming.NamingException; import javax.naming.OperationNotSupportedException; /** * A JNDI context wrapper implementation that delegates read-only methods to its * delegate Context, and throws OperationNotSupportedException for any method * with a side-effect. * * @author Scott.Stark@jboss.org * @version $Revision: 2787 $ */ @SuppressWarnings("unchecked") public class ReadOnlyContext implements Context { /** The actual context we impose the read-only behavior on */ private Context delegate; public ReadOnlyContext(Context delegate) { this.delegate = delegate; } // Supported methods // ----------------------------------------------------------- public void close() throws NamingException { delegate.close(); } public String composeName(String name, String prefix) throws NamingException { return delegate.composeName(name, prefix); } public Name composeName(Name name, Name prefix) throws NamingException { return delegate.composeName(name, prefix); } public String getNameInNamespace() throws NamingException { return delegate.getNameInNamespace(); } public Hashtable getEnvironment() throws NamingException { return delegate.getEnvironment(); } public Object lookup(String name) throws NamingException { return delegate.lookup(name); } public Object lookupLink(String name) throws NamingException { return delegate.lookupLink(name); } public Object lookup(Name name) throws NamingException { return delegate.lookup(name); } public Object lookupLink(Name name) throws NamingException { return delegate.lookupLink(name); } public NameParser getNameParser(String name) throws NamingException { return delegate.getNameParser(name); } public NameParser getNameParser(Name name) throws NamingException { return delegate.getNameParser(name); } public NamingEnumeration list(String name) throws NamingException { return delegate.list(name); } public NamingEnumeration listBindings(String name) throws NamingException { return delegate.listBindings(name); } public NamingEnumeration list(Name name) throws NamingException { return delegate.list(name); } public NamingEnumeration listBindings(Name name) throws NamingException { return delegate.listBindings(name); } // Unsupported methods // --------------------------------------------------------- public Object addToEnvironment(String propName, Object propVal) throws NamingException { throw new OperationNotSupportedException("This is a read-only Context"); } public void bind(String name, Object obj) throws NamingException { throw new OperationNotSupportedException("This is a read-only Context"); } public void bind(Name name, Object obj) throws NamingException { throw new OperationNotSupportedException("This is a read-only Context"); } public Context createSubcontext(String name) throws NamingException { throw new OperationNotSupportedException("This is a read-only Context"); } public Context createSubcontext(Name name) throws NamingException { throw new OperationNotSupportedException("This is a read-only Context"); } public void destroySubcontext(String name) throws NamingException { throw new OperationNotSupportedException("This is a read-only Context"); } public void destroySubcontext(Name name) throws NamingException { throw new OperationNotSupportedException("This is a read-only Context"); } public Object removeFromEnvironment(String propName) throws NamingException { throw new OperationNotSupportedException("This is a read-only Context"); } public void rebind(String name, Object obj) throws NamingException { throw new OperationNotSupportedException("This is a read-only Context"); } public void rebind(Name name, Object obj) throws NamingException { throw new OperationNotSupportedException("This is a read-only Context"); } public void rename(String oldName, String newName) throws NamingException { throw new OperationNotSupportedException("This is a read-only Context"); } public void rename(Name oldName, Name newName) throws NamingException { throw new OperationNotSupportedException("This is a read-only Context"); } public void unbind(String name) throws NamingException { throw new OperationNotSupportedException("This is a read-only Context"); } public void unbind(Name name) throws NamingException { throw new OperationNotSupportedException("This is a read-only Context"); } }