namingcontextimpl.java

java1.6众多例子参考

/*
 * @(#)NamingContextImpl.java	1.18 05/11/17
 *
 * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
 * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 */
/*
 * @(#)NamingContextImpl.java 1.4 00/02/07
 *
 * Copyright 1993-1997 Sun Microsystems, Inc. 901 San Antonio Road,
 * Palo Alto, California, 94303, U.S.A.  All Rights Reserved.
 *
 * This software is the confidential and proprietary information of Sun
 * Microsystems, Inc. ("Confidential Information").  You shall not
 * disclose such Confidential Information and shall use it only in
 * accordance with the terms of the license agreement you entered into
 * with Sun.
 *
 * CopyrightVersion 1.2
 *
 */

package com.sun.corba.se.impl.naming.pcosnaming;


import org.omg.CORBA.Object;
import org.omg.CORBA.SystemException;
import org.omg.CORBA.BAD_PARAM;
import org.omg.CORBA.CompletionStatus;
import org.omg.CORBA.Policy;
import org.omg.PortableServer.POA;
import org.omg.PortableServer.LifespanPolicyValue;
import org.omg.PortableServer.RequestProcessingPolicyValue;
import org.omg.PortableServer.IdAssignmentPolicyValue;
import org.omg.PortableServer.ServantRetentionPolicyValue;

import org.omg.CosNaming.*;
import org.omg.CosNaming.NamingContextPackage.*;
import org.omg.CosNaming.NamingContextExtPackage.*;

import com.sun.corba.se.impl.naming.cosnaming.NamingContextDataStore;
import com.sun.corba.se.impl.naming.cosnaming.NamingUtils;

import com.sun.corba.se.impl.naming.namingutil.INSURLHandler;

import com.sun.corba.se.spi.orb.ORB;
import com.sun.corba.se.spi.logging.CORBALogDomains;

import com.sun.corba.se.impl.orbutil.ORBConstants;
import com.sun.corba.se.impl.logging.NamingSystemException;

import java.io.Serializable;
import java.util.Hashtable;

/**
 * Class NamingContextImpl implements the org.omg.CosNaming::NamingContext and
 * NamingContextExt interface.
 * <p>
 * The operations bind(), rebind(), bind_context() and rebind_context()
 * are all really implemented by doBind(). resolve() is really implemented
 * by doResolve(), unbind() by doUnbind(). list(), new_context() and
 * destroy() uses the NamingContextDataStore interface directly. All the
 * doX() methods are public static.
 * They synchronize on the NamingContextDataStore object.
 * <p>
 * None of the methods here are Synchronized because These methods will be
 * invoked from Super class's doBind( ), doResolve( ) which are already
 * Synchronized.
 */


public class NamingContextImpl 
    extends NamingContextExtPOA
    implements NamingContextDataStore, Serializable 
{

    // The ORB is required to do string_to_object() operations
    // All the references are stored in the files in the form of IOR strings 
    private transient ORB orb;

    // The ObjectKey will be in the format NC<Index> which uniquely identifies
    // The NamingContext internaly
    private final String objKey;

    // Hash table contains all the entries in the NamingContexts. The
    // CORBA.Object references will be stored in the form of IOR strings
    // and the Child Naming Contexts will have it's key as the entry in the
    // table. This table is written into File everytime an update is made 
    // on this context.
    private final Hashtable theHashtable = new Hashtable( );

    // The NameServiceHandle is required to get the ObjectId from the
    // NamingContext's references. These references are created using
    // POA in the NameService.
    private transient NameService theNameServiceHandle;

    // ServantManager is the single point of contact to Read, Write and
    // Update the NamingContextFile
    private transient ServantManagerImpl theServantManagerImplHandle;

    // All the INS (Interoperable Naming Service) methods are defined in this class
    // All the calls to INS will be delegated to this class.
    private transient com.sun.corba.se.impl.naming.cosnaming.InterOperableNamingImpl insImpl;

    private transient NamingSystemException readWrapper ;

    private transient NamingSystemException updateWrapper ;

    private static POA biPOA = null;

    /**
     * Create a naming context servant.
     * Runs the super constructor.
     * @param orb an ORB object.
     * @param objKey as String
     * @param TheNameService as NameService
     * @param TheServantManagerImpl as ServantManagerImpl
     * @exception java.lang.Exception a Java exception.
     */

    public NamingContextImpl(ORB orb, String objKey, 
        NameService theNameService, ServantManagerImpl theServantManagerImpl  )
	throws Exception
    {
	super();

	this.orb = orb;
	readWrapper = NamingSystemException.get( orb, 
	    CORBALogDomains.NAMING_READ ) ;
	updateWrapper = NamingSystemException.get( orb, 
	    CORBALogDomains.NAMING_UPDATE ) ;

	debug = true ; // orb.namingDebugFlag ;
	this.objKey = objKey;
	theNameServiceHandle = theNameService;
	theServantManagerImplHandle = theServantManagerImpl;
	insImpl = 
            new com.sun.corba.se.impl.naming.cosnaming.InterOperableNamingImpl(); 
    }

    com.sun.corba.se.impl.naming.cosnaming.InterOperableNamingImpl getINSImpl( )
    {
	if( insImpl == null )
	{
            // insImpl will be null if the NamingContext graph is rebuilt from
            // the persistence store.
	    insImpl = 
                new com.sun.corba.se.impl.naming.cosnaming.InterOperableNamingImpl();
	}
	return insImpl;
    }


    public void setRootNameService( NameService theNameService ) {
	theNameServiceHandle = theNameService;
    }

    public void setORB( ORB theOrb ) {
	orb = theOrb;
    }

    public void setServantManagerImpl( 
		ServantManagerImpl theServantManagerImpl )
    {
	theServantManagerImplHandle = theServantManagerImpl;
    }

    public POA getNSPOA( ) {
        return theNameServiceHandle.getNSPOA( );
    }




   /**
   * Bind an object under a name in this NamingContext. If the name
   * contains multiple (n) components, n-1 will be resolved in this
   * NamingContext and the object bound in resulting NamingContext.
   * An exception is thrown if a binding with the supplied name already
   * exists. If the
   * object to be bound is a NamingContext it will not participate in
   * a recursive resolve.
   * @param n a sequence of NameComponents which is the name under which
   * the object will be bound.
   * @param obj the object reference to be bound.
   * @exception org.omg.CosNaming.NamingContextPackage.NotFound A name with multiple
   * components was supplied, but the first component could not be
   * resolved.
   * @exception org.omg.CosNaming.NamingContextPackage.CannotProceed Could not proceed
   * in resolving the n-1 components of the supplied name.
   * @exception org.omg.CosNaming.NamingContextPackage.InvalidName The supplied name
   * is invalid (i.e., has length less than 1).
   * @exception org.omg.CosNaming.NamingContextPackage.AlreadyBound The supplied name
   * is already bound.
   * @exception org.omg.CORBA.SystemException One of a fixed set of CORBA system exceptions.
   * @see doBind
   */
   public void bind(NameComponent[] n, org.omg.CORBA.Object obj)
        throws org.omg.CosNaming.NamingContextPackage.NotFound,
               org.omg.CosNaming.NamingContextPackage.CannotProceed,
               org.omg.CosNaming.NamingContextPackage.InvalidName,
               org.omg.CosNaming.NamingContextPackage.AlreadyBound
    {
        if( obj == null ) {
	    throw updateWrapper.objectIsNull() ;
        }

        if (debug)
            dprint("bind " + nameToString(n) + " to " + obj);
        // doBind implements all four flavors of binding
        NamingContextDataStore impl = (NamingContextDataStore)this;
        doBind(impl,n,obj,false,BindingType.nobject);
    }

   /**
   * Bind a NamingContext under a name in this NamingContext. If the name
   * contains multiple (n) components, n-1 will be resolved in this
   * NamingContext and the object bound in resulting NamingContext.
   * An exception is thrown if a binding with the supplied name already
   * exists. The NamingContext will participate in recursive resolving.
   * @param n a sequence of NameComponents which is the name under which
   * the object will be bound.
   * @param obj the NamingContect object reference to be bound.
   * @exception org.omg.CosNaming.NamingContextPackage.NotFound A name with multiple
   * components was supplied, but the first component could not be
   * resolved.
   * @exception org.omg.CosNaming.NamingContextPackage.CannotProceed Could not proceed
   * in resolving the n-1 components of the supplied name.
   * @exception org.omg.CosNaming.NamingContextPackage.InvalidName The supplied name
   * is invalid (i.e., has length less than 1).
   * @exception org.omg.CosNaming.NamingContextPackage.AlreadyBound An object is
   * already bound under the supplied name.
   * @exception org.omg.CORBA.SystemException One of a fixed set of CORBA system exceptions.
   * @see doBind
   */
   public void bind_context(NameComponent[] n, NamingContext nc)
        throws org.omg.CosNaming.NamingContextPackage.NotFound,
               org.omg.CosNaming.NamingContextPackage.CannotProceed,
               org.omg.CosNaming.NamingContextPackage.InvalidName,
               org.omg.CosNaming.NamingContextPackage.AlreadyBound
    {
        if( nc == null ) {
	    throw updateWrapper.objectIsNull() ;
        }
        // doBind implements all four flavors of binding
        NamingContextDataStore impl = (NamingContextDataStore)this;
        doBind(impl,n,nc,false,BindingType.ncontext);
    }

 /**
   * Bind an object under a name in this NamingContext. If the name
   * contains multiple (n) components, n-1 will be resolved in this
   * NamingContext and the object bound in resulting NamingContext.
   * If a binding under the supplied name already exists it will be
   * unbound first. If the
   * object to be bound is a NamingContext it will not participate in
   * a recursive resolve.
   * @param n a sequence of NameComponents which is the name under which
   * the object will be bound.
   * @param obj the object reference to be bound.
   * @exception org.omg.CosNaming.NamingContextPackage.NotFound A name with multiple
   * components was supplied, but the first component could not be
   * resolved.
   * @exception org.omg.CosNaming.NamingContextPackage.CannotProceed Could not proceed
   * in resolving the n-1 components of the supplied name.
   * @exception org.omg.CosNaming.NamingContextPackage.InvalidName The supplied name
   * is invalid (i.e., has length less than 1).
   * @exception org.omg.CORBA.SystemException One of a fixed set of CORBA system exceptions.
   * @see doBind
   */
   public  void rebind(NameComponent[] n, org.omg.CORBA.Object obj)
        throws       org.omg.CosNaming.NamingContextPackage.NotFound,
                     org.omg.CosNaming.NamingContextPackage.CannotProceed,
                     org.omg.CosNaming.NamingContextPackage.InvalidName
    {
        if( obj == null )
        {
	    throw updateWrapper.objectIsNull() ;
        }
        try {
            if (debug)
                dprint("rebind " + nameToString(n) + " to " + obj);
            // doBind implements all four flavors of binding
            NamingContextDataStore impl = (NamingContextDataStore)this;
            doBind(impl,n,obj,true,BindingType.nobject);
        } catch (org.omg.CosNaming.NamingContextPackage.AlreadyBound ex) {
            // This should not happen
	    throw updateWrapper.namingCtxRebindAlreadyBound( ex ) ;
        }
    }

   /**
   * Bind a NamingContext under a name in this NamingContext. If the name
   * contains multiple (n) components, the first n-1 components will be
   * resolved in this
   * NamingContext and the object bound in resulting NamingContext.
   * If a binding under the supplied name already exists it will be
   * unbound first. The NamingContext will participate in recursive resolving.
   * @param n a sequence of NameComponents which is the name under which
   * the object will be bound.
   * @param obj the object reference to be bound.
   * @exception org.omg.CosNaming.NamingContextPackage.NotFound A name with multiple
   * components was supplied, but the first component could not be
   * resolved.
   * @exception org.omg.CosNaming.NamingContextPackage.CannotProceed Could not proceed
   * in resolving the n-1 components of the supplied name.
   * @exception org.omg.CosNaming.NamingContextPackage.InvalidName The supplied name
   * is invalid (i.e., has length less than 1).
   * @exception org.omg.CORBA.SystemException One of a fixed set of CORBA system exceptions.
   * @see doBind
   */
   public  void rebind_context(NameComponent[] n, NamingContext nc)
        throws org.omg.CosNaming.NamingContextPackage.NotFound,
               org.omg.CosNaming.NamingContextPackage.CannotProceed,
               org.omg.CosNaming.NamingContextPackage.InvalidName
    {
        try {
            if (debug)
                dprint("rebind_context " + nameToString(n) + " to " + nc);
            // doBind implements all four flavors of binding
            NamingContextDataStore impl = (NamingContextDataStore)this;
            doBind(impl,n,nc,true,BindingType.ncontext);
        } catch (org.omg.CosNaming.NamingContextPackage.AlreadyBound ex) {
            // This should not happen
	    throw updateWrapper.namingCtxRebindAlreadyBound( ex ) ;
        }