1. /*

  2.  * @(#)NamingContextImpl.java	1.65 03/01/23

  3.  *

  4.  * Copyright 2003 Sun Microsystems, Inc. All rights reserved.

  5.  * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.

  6.  */

  7. 

  8. package com.sun.corba.se.internal.CosNaming;

  9. 

  10. // Import general CORBA classes

  11. import org.omg.CORBA.ORB;

  12. import org.omg.CORBA.Object;

  13. import org.omg.CORBA.BAD_PARAM;

  14. import org.omg.CORBA.INTERNAL;

  15. import org.omg.CORBA.CompletionStatus;

  16. import org.omg.PortableServer.POA;

  17. import org.omg.PortableServer.Servant;

  18. 

  19. // Import org.omg.CosNaming classes

  20. import org.omg.CosNaming.BindingType;

  21. import org.omg.CosNaming.BindingTypeHolder;

  22. import org.omg.CosNaming.BindingListHolder;

  23. import org.omg.CosNaming.BindingIteratorHolder;

  24. import org.omg.CosNaming.NameComponent;

  25. import org.omg.CosNaming.NamingContextHelper;

  26. import org.omg.CosNaming.NamingContext;

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

  28. import org.omg.CosNaming._NamingContextImplBase;

  29. import org.omg.CosNaming.NamingContextExtHelper;

  30. import org.omg.CosNaming.NamingContextExt;

  31. import org.omg.CosNaming.NamingContextExtPOA;

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

  33. import com.sun.corba.se.internal.POA.POAORB;

  34. import org.omg.CosNaming.NamingContextPackage.NotFound;

  35. 

  36. import com.sun.corba.se.internal.CosNaming.NamingContextDataStore;

  37. 

  38. import com.sun.corba.se.internal.CosNaming.MinorCodes;

  39. import com.sun.corba.se.internal.corba.InitialNamingClient;

  40. import com.sun.corba.se.internal.corba.CorbaName;

  41. 

  42. /**

  43.  * Class NamingContextImpl implements the org.omg.CosNaming::NamingContext

  44.  * interface, but does not implement the methods associated with

  45.  * maintaining the "table" of current bindings in a NamingContext.

  46.  * Instead, this implementation assumes that the derived implementation

  47.  * implements the NamingContextDataStore interface, which has the necessary

  48.  * methods. This allows multiple

  49.  * NamingContext implementations that differ in storage of the bindings,

  50.  * as well as implementations of interfaces derived from

  51.  * CosNaming::NamingContext that still reuses the implementation.

  52.  * <p>

  53.  * The operations bind(), rebind(), bind_context() and rebind_context()

  54.  * are all really implemented by doBind(). resolve() is really implemented

  55.  * by doResolve(), unbind() by doUnbind(). list(), new_context() and

  56.  * destroy() uses the NamingContextDataStore interface directly. All the

  57.  * doX() methods are public static.

  58.  * They synchronize on the NamingContextDataStore object.

  59.  * <p>

  60.  * An implementation a NamingContext must extend this class and implement

  61.  * the NamingContextDataStore interface with the operations:

  62.  * Bind(), Resolve(),

  63.  * Unbind(), List(), NewContext() and Destroy(). Calls

  64.  * to these methods are synchronized; these methods should

  65.  * therefore not be synchronized.

  66.  */

  67. public abstract class NamingContextImpl 

  68.     extends NamingContextExtPOA

  69.     implements NamingContextDataStore

  70. {

  71. 

  72.     protected POA nsPOA;

  73. 

  74.     // The grammer for Parsing and Building Interoperable Stringified Names

  75.     // are implemented in this class

  76.     private InterOperableNamingImpl insImpl; 

  77.     /**

  78.      * Create a naming context servant.

  79.      * Runs the super constructor.

  80.      * @param orb an ORB object.

  81.      * @exception java.lang.Exception a Java exception.

  82.      */

  83.     public NamingContextImpl(POAORB orb, POA poa) throws java.lang.Exception {

  84. 	super();

  85. 	this.orb = orb;

  86.         insImpl = new InterOperableNamingImpl( );

  87.         this.nsPOA = poa;

  88.     }

  89. 

  90.     public POA getNSPOA( ) {

  91.         return nsPOA;

  92.     }

  93.   

  94.     /**

  95.      * Bind an object under a name in this NamingContext. If the name

  96.      * contains multiple (n) components, n-1 will be resolved in this

  97.      * NamingContext and the object bound in resulting NamingContext.

  98.      * An exception is thrown if a binding with the supplied name already

  99.      * exists. If the

  100.      * object to be bound is a NamingContext it will not participate in

  101.      * a recursive resolve.

  102.      * @param n a sequence of NameComponents which is the name under which

  103.      * the object will be bound.

  104.      * @param obj the object reference to be bound.

  105.      * @exception org.omg.CosNaming.NamingContextPackage.NotFound A name with 

  106.      * multiple components was supplied, but the first component could not be

  107.      * resolved.

  108.      * @exception org.omg.CosNaming.NamingContextPackage.CannotProceed Could 

  109.      * not proceed in resolving the n-1 components of the supplied name.

  110.      * @exception org.omg.CosNaming.NamingContextPackage.InvalidName The 

  111.      * supplied name is invalid (i.e., has length less than 1).

  112.      * @exception org.omg.CosNaming.NamingContextPackage.AlreadyBound An object

  113.      * is already bound under the supplied name.

  114.      * @exception org.omg.CORBA.SystemException One of a fixed set of CORBA 

  115.      * system exceptions.

  116.      * @see doBind

  117.      */

  118.     public void bind(NameComponent[] n, org.omg.CORBA.Object obj)

  119. 	throws org.omg.CosNaming.NamingContextPackage.NotFound,

  120. 	       org.omg.CosNaming.NamingContextPackage.CannotProceed,

  121. 	       org.omg.CosNaming.NamingContextPackage.InvalidName,

  122. 	       org.omg.CosNaming.NamingContextPackage.AlreadyBound

  123.     {

  124. 	if( obj == null )

  125.         {

  126.             throw new org.omg.CORBA.INTERNAL(MinorCodes.OBJECT_IS_NULL,

  127.                                      CompletionStatus.COMPLETED_NO);

  128.         }

  129. 	if (debug)

  130. 	    dprint("bind " + nameToString(n) + " to " + obj);

  131. 	// doBind implements all four flavors of binding

  132. 	NamingContextDataStore impl = (NamingContextDataStore)this;

  133. 	doBind(impl,n,obj,false,BindingType.nobject);

  134.     }

  135.   

  136.     /**

  137.      * Bind a NamingContext under a name in this NamingContext. If the name

  138.      * contains multiple (n) components, n-1 will be resolved in this

  139.      * NamingContext and the object bound in resulting NamingContext.

  140.      * An exception is thrown if a binding with the supplied name already

  141.      * exists. The NamingContext will participate in recursive resolving.

  142.      * @param n a sequence of NameComponents which is the name under which

  143.      * the object will be bound.

  144.      * @param obj the NamingContect object reference to be bound.

  145.      * @exception org.omg.CosNaming.NamingContextPackage.NotFound A name with 

  146.      * multiple components was supplied, but the first component could not be

  147.      * resolved.

  148.      * @exception org.omg.CosNaming.NamingContextPackage.CannotProceed Could 

  149.      * not proceed in resolving the n-1 components of the supplied name.

  150.      * @exception org.omg.CosNaming.NamingContextPackage.InvalidName The 

  151.      * supplied name is invalid (i.e., has length less than 1).

  152.      * @exception org.omg.CosNaming.NamingContextPackage.AlreadyBound An object

  153.      * is already bound under the supplied name.

  154.      * @exception org.omg.CORBA.SystemException One of a fixed set of CORBA 

  155.      * system exceptions.

  156.      * @see doBind

  157.      */

  158.     public void bind_context(NameComponent[] n, NamingContext nc)

  159. 	throws org.omg.CosNaming.NamingContextPackage.NotFound,

  160. 	       org.omg.CosNaming.NamingContextPackage.CannotProceed,

  161. 	       org.omg.CosNaming.NamingContextPackage.InvalidName,

  162. 	       org.omg.CosNaming.NamingContextPackage.AlreadyBound

  163.     {

  164.         if( nc == null ) {

  165.             throw new BAD_PARAM( "Naming Context should not be null " );

  166.         }

  167. 	// doBind implements all four flavors of binding

  168. 	NamingContextDataStore impl = (NamingContextDataStore)this;

  169. 	doBind(impl,n,nc,false,BindingType.ncontext);

  170.     }

  171.   

  172.     /**

  173.      * Bind an object under a name in this NamingContext. If the name

  174.      * contains multiple (n) components, n-1 will be resolved in this

  175.      * NamingContext and the object bound in resulting NamingContext.

  176.      * If a binding under the supplied name already exists it will be

  177.      * unbound first. If the

  178.      * object to be bound is a NamingContext it will not participate in

  179.      * a recursive resolve.

  180.      * @param n a sequence of NameComponents which is the name under which

  181.      * the object will be bound.

  182.      * @param obj the object reference to be bound.

  183.      * @exception org.omg.CosNaming.NamingContextPackage.NotFound A name with

  184.      * multiple components was supplied, but the first component could not be

  185.      * resolved.

  186.      * @exception org.omg.CosNaming.NamingContextPackage.CannotProceed Could not

  187.      * proceed in resolving the n-1 components of the supplied name.

  188.      * @exception org.omg.CosNaming.NamingContextPackage.InvalidName The 

  189.      * supplied name is invalid (i.e., has length less than 1).

  190.      * @exception org.omg.CORBA.SystemException One of a fixed set of CORBA 

  191.      * system exceptions.

  192.      * @see doBind

  193.      */

  194.     public  void rebind(NameComponent[] n, org.omg.CORBA.Object obj)

  195. 	throws       org.omg.CosNaming.NamingContextPackage.NotFound,

  196. 		     org.omg.CosNaming.NamingContextPackage.CannotProceed,

  197. 		     org.omg.CosNaming.NamingContextPackage.InvalidName

  198.     {

  199. 	if( obj == null )

  200.         {

  201.             throw new org.omg.CORBA.INTERNAL(MinorCodes.OBJECT_IS_NULL,

  202.                  CompletionStatus.COMPLETED_NO);

  203.         }

  204. 	try {

  205. 	    if (debug)

  206. 		dprint("rebind " + nameToString(n) + " to " + obj);

  207. 	    // doBind implements all four flavors of binding

  208. 	    NamingContextDataStore impl = (NamingContextDataStore)this;

  209. 	    doBind(impl,n,obj,true,BindingType.nobject);

  210. 	} catch (org.omg.CosNaming.NamingContextPackage.AlreadyBound ex) {

  211. 	    // This should not happen

  212. 	    throw new org.omg.CORBA.INTERNAL(

  213.                 MinorCodes.NAMING_CTX_REBIND_ALREADY_BOUND,

  214. 	        CompletionStatus.COMPLETED_NO);

  215. 	}

  216.     }

  217. 

  218.     /**

  219.      * Bind a NamingContext under a name in this NamingContext. If the name

  220.      * contains multiple (n) components, the first n-1 components will be

  221.      * resolved in this NamingContext and the object bound in resulting 

  222.      * NamingContext. If a binding under the supplied name already exists it 

  223.      * will be unbound first. The NamingContext will participate in recursive 

  224.      * resolving.

  225.      * @param n a sequence of NameComponents which is the name under which

  226.      * the object will be bound.

  227.      * @param obj the object reference to be bound.

  228.      * @exception org.omg.CosNaming.NamingContextPackage.NotFound A name with 

  229.      * multiple components was supplied, but the first component could not be

  230.      * resolved.

  231.      * @exception org.omg.CosNaming.NamingContextPackage.CannotProceed Could not

  232.      * proceed in resolving the n-1 components of the supplied name.

  233.      * @exception org.omg.CosNaming.NamingContextPackage.InvalidName The 

  234.      * supplied name is invalid (i.e., has length less than 1).

  235.      * @exception org.omg.CORBA.SystemException One of a fixed set of CORBA 

  236.      * system exceptions.

  237.      * @see doBind

  238.      */

  239.     public  void rebind_context(NameComponent[] n, NamingContext nc)

  240. 	throws org.omg.CosNaming.NamingContextPackage.NotFound,

  241. 	       org.omg.CosNaming.NamingContextPackage.CannotProceed,

  242. 	       org.omg.CosNaming.NamingContextPackage.InvalidName

  243.     {

  244. 	try {

  245. 	    if (debug)

  246. 		dprint("rebind_context " + nameToString(n) + " to " + nc);

  247. 	    // doBind implements all four flavors of binding

  248. 	    NamingContextDataStore impl = (NamingContextDataStore)this;

  249. 	    doBind(impl,n,nc,true,BindingType.ncontext);

  250. 	} catch (org.omg.CosNaming.NamingContextPackage.AlreadyBound ex) {      

  251. 	    // This should not happen

  252. 	    throw new org.omg.CORBA.INTERNAL(

  253.                 MinorCodes.NAMING_CTX_REBINDCTX_ALREADY_BOUND,

  254. 	        CompletionStatus.COMPLETED_NO);

  255. 	}

  256.     }

  257. 

  258.     /**

  259.      * Resolve a name in this NamingContext and return the object reference

  260.      * bound to the name. If the name contains multiple (n) components,

  261.      * the first component will be resolved in this NamingContext and the

  262.      * remaining components resolved in the resulting NamingContext, provided

  263.      * that the NamingContext bound to the first component of the name was

  264.      * bound with bind_context().

  265.      * @param n a sequence of NameComponents which is the name to be resolved.

  266.      * @return the object reference bound under the supplied name.

  267.      * @exception org.omg.CosNaming.NamingContextPackage.NotFound A name with 

  268.      * multiple components was supplied, but the first component could not be

  269.      * resolved.

  270.      * @exception org.omg.CosNaming.NamingContextPackage.CannotProceed Could not

  271.      * proceed in resolving the n-1 components of the supplied name.

  272.      * @exception org.omg.CosNaming.NamingContextPackage.InvalidName The 

  273.      * supplied name is invalid (i.e., has length less than 1).   

  274.      * @exception org.omg.CORBA.SystemException One of a fixed set of CORBA 

  275.      * system exceptions.

  276.      * @see doResolve

  277.      */

  278.     public  org.omg.CORBA.Object resolve(NameComponent[] n)

  279. 	throws org.omg.CosNaming.NamingContextPackage.NotFound,

  280. 	       org.omg.CosNaming.NamingContextPackage.CannotProceed,

  281. 	       org.omg.CosNaming.NamingContextPackage.InvalidName

  282.     {

  283. 	if (debug)

  284. 	    dprint("resolve " + nameToString(n));

  285. 	// doResolve actually resolves

  286. 	NamingContextDataStore impl = (NamingContextDataStore)this;

  287. 	return doResolve(impl,n);

  288.     }

  289. 

  290.     /**

  291.      * Remove a binding from this NamingContext. If the name contains

  292.      * multiple (n) components, the first n-1 components will be resolved

  293.      * from this NamingContext and the final component unbound in

  294.      * the resulting NamingContext.

  295.      * @param n a sequence of NameComponents which is the name to be unbound.

  296.      * @exception org.omg.CosNaming.NamingContextPackage.NotFound A name with 

  297.      * multiple components was supplied, but the first component could not be

  298.      * resolved.

  299.      * @exception org.omg.CosNaming.NamingContextPackage.CannotProceed Could not

  300.      * proceed in resolving the n-1 components of the supplied name.

  301.      * @exception org.omg.CosNaming.NamingContextPackage.InvalidName The 

  302.      * supplied name is invalid (i.e., has length less than 1).   

  303.      * @exception org.omg.CORBA.SystemException One of a fixed set of CORBA 

  304.      * system exceptions.

  305.      * @see doUnbind

  306.      */

  307.     public  void unbind(NameComponent[] n)

  308. 	throws org.omg.CosNaming.NamingContextPackage.NotFound,

  309. 	       org.omg.CosNaming.NamingContextPackage.CannotProceed,

  310. 	       org.omg.CosNaming.NamingContextPackage.InvalidName

  311.     {

  312. 	if (debug)

  313. 	    dprint("unbind " + nameToString(n));

  314. 	// doUnbind actually unbinds

  315. 	NamingContextDataStore impl = (NamingContextDataStore)this;

  316. 	doUnbind(impl,n);

  317.     }

  318. 

  319.     /**

  320.      * List the contents of this NamingContest. A sequence of bindings

  321.      * is returned (a BindingList) containing up to the number of requested

  322.      * bindings, and a BindingIterator object reference is returned for

  323.      * iterating over the remaining bindings.

  324.      * @param how_many The number of requested bindings in the BindingList.

  325.      * @param bl The BindingList as an out parameter.

  326.      * @param bi The BindingIterator as an out parameter.

  327.      * @exception org.omg.CORBA.SystemException One of a fixed set of CORBA 

  328.      * system exceptions.

  329.      * @see BindingListHolder

  330.      * @see BindingIteratorImpl

  331.      */

  332.     public  void list(int how_many, BindingListHolder bl, 

  333.         BindingIteratorHolder bi)

  334.     {

  335. 	if (debug)

  336. 	    dprint("list(" + how_many + ")");

  337. 	// List actually generates the list

  338. 	NamingContextDataStore impl = (NamingContextDataStore)this;

  339. 	synchronized (impl) {

  340. 	    impl.List(how_many,bl,bi);

  341. 	}

  342. 	if (debug && bl.value != null)

  343. 	    dprint("list(" + how_many + ") -> bindings[" + bl.value.length +

  344. 		   "] + iterator: " + bi.value);

  345.     }

  346. 

  347.     /**

  348.      * Create a NamingContext object and return its object reference.

  349.      * @return an object reference for a new NamingContext object implemented

  350.      * by this Name Server.

  351.      * @exception org.omg.CORBA.SystemException One of a fixed set of CORBA 

  352.      * system exceptions.

  353.      */

  354.     public synchronized NamingContext new_context()

  355.     {

  356. 	// Create actually creates a new naming context

  357. 	if (debug)

  358. 	    dprint("new_context()");

  359. 	NamingContextDataStore impl = (NamingContextDataStore)this;

  360. 	synchronized (impl) {

  361. 	    return impl.NewContext();

  362. 	}

  363.     }

  364. 

  365.     /**

  366.      * Create a new NamingContext, bind it in this Naming Context and return

  367.      * its object reference. This is equivalent to using new_context() followed

  368.      * by bind_context() with the supplied name and the object reference for

  369.      * the newly created NamingContext.

  370.      * @param n a sequence of NameComponents which is the name to be unbound.

  371.      * @return an object reference for a new NamingContext object implemented

  372.      * by this Name Server, bound to the supplied name.   

  373.      * @exception org.omg.CosNaming.NamingContextPackage.AlreadyBound An object

  374.      * is already bound under the supplied name.

  375.      * @exception org.omg.CosNaming.NamingContextPackage.NotFound A name with 

  376.      * multiple components was supplied, but the first component could not be

  377.      * resolved.

  378.      * @exception org.omg.CosNaming.NamingContextPackage.CannotProceed Could not

  379.      * proceed in resolving the n-1 components of the supplied name.

  380.      * @exception org.omg.CosNaming.NamingContextPackage.InvalidName The 

  381.      * supplied name is invalid (i.e., has length less than 1).   

  382.      * @exception org.omg.CORBA.SystemException One of a fixed set of CORBA 

  383.      * system exceptions.

  384.      * @see new_context

  385.      * @see bind_context

  386.      */

  387.     public  NamingContext bind_new_context(NameComponent[] n)

  388. 	throws org.omg.CosNaming.NamingContextPackage.NotFound,

  389. 	       org.omg.CosNaming.NamingContextPackage.AlreadyBound,

  390. 	       org.omg.CosNaming.NamingContextPackage.CannotProceed,

  391. 	       org.omg.CosNaming.NamingContextPackage.InvalidName

  392.     {

  393. 	NamingContext nc = null;

  394. 	NamingContext rnc = null;

  395. 	try {

  396. 	    if (debug)

  397. 		dprint("bind_new_context " + nameToString(n));

  398. 	    // The obvious solution:

  399. 	    nc = this.new_context();

  400. 	    this.bind_context(n,nc);

  401. 	    rnc = nc;

  402. 	    nc = null;

  403. 	} finally {

  404. 	    try {

  405. 		if(nc != null)

  406. 		    nc.destroy();

  407. 	    } catch (org.omg.CosNaming.NamingContextPackage.NotEmpty e) {

  408. 	    }

  409. 	}

  410. 	return rnc;

  411.     }

  412. 

  413.     /**

  414.      * Destroy this NamingContext object. If this NamingContext contains

  415.      * no bindings, the NamingContext is deleted.

  416.      * @exception org.omg.CosNaming.NamingContextPackage.NotEmpty This 

  417.      * NamingContext is not empty (i.e., contains bindings).

  418.      * @exception org.omg.CORBA.SystemException One of a fixed set of CORBA 

  419.      * system exceptions.

  420.      */

  421.     public  void destroy()

  422. 	throws org.omg.CosNaming.NamingContextPackage.NotEmpty

  423.     {

  424. 	if (debug)

  425. 	    dprint("destroy ");

  426. 	NamingContextDataStore impl = (NamingContextDataStore)this;

  427. 	synchronized (impl) {

  428. 	    if (impl.IsEmpty() == true)

  429. 		// The context is empty so it can be destroyed

  430. 		impl.Destroy();

  431. 	    else

  432. 		// This context is not empty!

  433. 		throw new NotEmpty();

  434. 	}

  435.     }

  436. 

  437.     /**

  438.      * Implements all four flavors of binding. It uses Resolve() to

  439.      * check if a binding already exists (for bind and bind_context), and

  440.      * unbind() to ensure that a binding does not already exist.

  441.      * If the length of the name is 1, then Bind() is called with

  442.      * the name and the object to bind. Otherwise, the first component

  443.      * of the name is resolved in this NamingContext and the appropriate

  444.      * form of bind passed to the resulting NamingContext.

  445.      * This method is static for maximal reuse - even for extended naming

  446.      * context implementations where the recursive semantics still apply.

  447.      * @param impl an implementation of NamingContextDataStore

  448.      * @param n a sequence of NameComponents which is the name under which

  449.      * the object will be bound.

  450.      * @param obj the object reference to be bound.

  451.      * @param rebind Replace an existing binding or not.

  452.      * @param bt Type of binding (as object or as context).

  453.      * @exception org.omg.CosNaming.NamingContextPackage.NotFound A name with 

  454.      * multiple components was supplied, but the first component could not be

  455.      * resolved.

  456.      * @exception org.omg.CosNaming.NamingContextPackage.CannotProceed Could not     * proceed

  457.      * in resolving the first component of the supplied name.

  458.      * @exception org.omg.CosNaming.NamingContextPackage.InvalidName The 

  459.      * supplied name is invalid (i.e., has length less than 1).

  460.      * @exception org.omg.CosNaming.NamingContextPackage.AlreadyBound An object

  461.      * is already bound under the supplied name.

  462.      * @exception org.omg.CORBA.SystemException One of a fixed set of CORBA 

  463.      * system exceptions.

  464.      * @see resolve

  465.      * @see unbind

  466.      * @see bind

  467.      * @see bind_context

  468.      * @see rebind

  469.      * @see rebind_context

  470.      */

  471.     public static void doBind(NamingContextDataStore impl,

  472. 			      NameComponent[] n,

  473. 			      org.omg.CORBA.Object obj,

  474. 			      boolean rebind,

  475. 			      org.omg.CosNaming.BindingType bt)

  476. 	throws org.omg.CosNaming.NamingContextPackage.NotFound,

  477. 	       org.omg.CosNaming.NamingContextPackage.CannotProceed,

  478. 	       org.omg.CosNaming.NamingContextPackage.InvalidName,

  479. 	       org.omg.CosNaming.NamingContextPackage.AlreadyBound

  480.     {

  481. 	// Valid name?

  482. 	if (n.length < 1)

  483. 	    throw new InvalidName();

  484.     

  485.     // At bottom level?

  486. 	if (n.length == 1) {

  487. 	    // The identifier must be set

  488. 	    if ( (n[0].id.length() == 0) && (n[0].kind.length() == 0 ) ) {

  489. 		throw new InvalidName();

  490.             }

  491. 

  492. 	    // Ensure synchronization of backend

  493. 	    synchronized (impl) {

  494. 		// Yes: bind object in this context under the name

  495. 		BindingTypeHolder bth = new BindingTypeHolder();

  496. 		if (rebind) {

  497.                     org.omg.CORBA.Object objRef = impl.Resolve( n[0], bth );

  498.                     if( objRef != null ) {

  499.                         // Refer Naming Service Doc:00-11-01 section 2.2.3.4 

  500.                         // If there is an object already bound with the name

  501.                         // and the binding type is not ncontext a NotFound 

  502.                         // Exception with a reason of not a context has to be

  503.                         // raised.

  504.                         // Fix for bug Id: 4384628

  505.                         if ( bth.value.value() == BindingType.nobject.value() ) {

  506.                             if ( bt.value() == BindingType.ncontext.value() ) {

  507.                                 throw new NotFound(NotFoundReason.not_context, n);

  508.                             }

  509.                         } else {

  510.                             // Previously a Context was bound and now trying to

  511.                             // bind Object. It is invalid.

  512.                             if ( bt.value() == BindingType.nobject.value() ) {

  513.                                 throw new NotFound(NotFoundReason.not_object, n);

  514.                             }

  515.                         }

  516.                         impl.Unbind(n[0]);

  517.                     }

  518. 

  519. 		} else {

  520. 		    if (impl.Resolve(n[0],bth) != null)

  521. 			// "Resistence is futile." [Borg pickup line]

  522. 			throw new AlreadyBound();

  523. 		}

  524. 	

  525. 		// Now there are no other bindings under this name

  526. 		impl.Bind(n[0],obj,bt);

  527. 	    }

  528. 	} else {

  529. 	    // No: bind in a different context

  530. 	    NamingContext context = resolveFirstAsContext(impl,n);

  531.       

  532. 	    // Compute tail

  533. 	    NameComponent[] tail = new NameComponent[n.length - 1];

  534. 	    System.arraycopy(n,1,tail,0,n.length-1);

  535. 

  536.       // How should we propagate the bind

  537. 	    switch (bt.value()) {

  538. 	    case BindingType._nobject:

  539. 		{

  540. 		    // Bind as object

  541. 		    if (rebind)

  542. 			context.rebind(tail,obj);

  543. 		    else

  544. 			context.bind(tail,obj);

  545. 		}

  546. 		break;

  547. 	    case BindingType._ncontext:

  548. 		{

  549. 		    // Narrow to a naming context using Java casts. It must work.

  550. 		    NamingContext objContext = (NamingContext)obj;

  551. 		    // Bind as context

  552. 		    if (rebind)

  553. 			context.rebind_context(tail,objContext);

  554. 		    else

  555. 			context.bind_context(tail,objContext);

  556. 		}

  557. 		break;

  558. 	    default:

  559. 		// This should not happen

  560. 		throw new org.omg.CORBA.INTERNAL(MinorCodes.NAMING_CTX_BAD_BINDINGTYPE,

  561. 						 CompletionStatus.COMPLETED_NO);

  562. 	    }

  563. 	}

  564.     }

  565. 

  566.     /**

  567.    * Implements resolving names in this NamingContext. The first component

  568.    * of the supplied name is resolved in this NamingContext by calling

  569.    * Resolve(). If there are no more components in the name, the

  570.    * resulting object reference is returned. Otherwise, the resulting object

  571.    * reference must have been bound as a context and be narrowable to

  572.    * a NamingContext. If this is the case, the remaining

  573.    * components of the name is resolved in the resulting NamingContext.

  574.    * This method is static for maximal reuse - even for extended naming

  575.    * context implementations where the recursive semantics still apply.

  576.    * @param impl an implementation of NamingContextDataStore

  577.    * @param n a sequence of NameComponents which is the name to be resolved.

  578.    * @return the object reference bound under the supplied name.

  579.    * @exception org.omg.CosNaming.NamingContextPackage.NotFound A name with multiple

  580.    * components was supplied, but the first component could not be

  581.    * resolved.

  582.    * @exception org.omg.CosNaming.NamingContextPackage.CannotProceed Could not proceed

  583.    * in resolving the first component of the supplied name.

  584.    * @exception org.omg.CosNaming.NamingContextPackage.InvalidName The supplied name

  585.    * is invalid (i.e., has length less than 1).   

  586.    * @exception org.omg.CORBA.SystemException One of a fixed set of CORBA system exceptions.

  587.    * @see resolve

  588.    */

  589.     public static org.omg.CORBA.Object doResolve(NamingContextDataStore impl,

  590. 						 NameComponent[] n)

  591. 	throws org.omg.CosNaming.NamingContextPackage.NotFound,

  592. 	       org.omg.CosNaming.NamingContextPackage.CannotProceed,

  593. 	       org.omg.CosNaming.NamingContextPackage.InvalidName

  594.     {

  595. 	org.omg.CORBA.Object obj = null;

  596. 	BindingTypeHolder bth = new BindingTypeHolder();

  597.     

  598.             

  599. 	// Length must be greater than 0

  600. 	if (n.length < 1)

  601. 	    throw new InvalidName();

  602. 

  603. 	// The identifier must be set

  604. 	if (n.length == 1) {

  605. 	    synchronized (impl) {

  606. 		// Resolve first level in this context

  607. 		obj = impl.Resolve(n[0],bth);

  608. 	    }

  609. 	    if (obj == null) {

  610. 		// Object was not found

  611. 		throw new NotFound(NotFoundReason.missing_node,n);

  612. 	    }

  613. 	    return obj;

  614. 	} else {

  615. 	    // n.length > 1

  616. 	    if ( (n[1].id.length() == 0) && (n[1].kind.length() == 0) ) {

  617. 		throw new InvalidName();

  618.             }

  619. 

  620. 	    NamingContext context = resolveFirstAsContext(impl,n);

  621.       

  622. 	    // Compute restOfName = name[1..length]

  623. 	    NameComponent[] tail = new NameComponent[n.length -1];

  624. 	    System.arraycopy(n,1,tail,0,n.length-1);

  625. 

  626.             // Resolve rest of name in context

  627.             try {

  628.                 // First try to resolve using the local call, this should work

  629.                 // most of the time unless there are federated naming contexts.

  630.                 Servant servant = impl.getNSPOA().reference_to_servant( 

  631.                     context );

  632.                 return doResolve(((NamingContextDataStore)servant), tail) ;

  633.             } catch( Exception e ) {

  634.                 return context.resolve(tail);

  635.             }

  636.         }

  637.     }

  638. 

  639.     /**

  640.    * Implements unbinding bound names in this NamingContext. If the

  641.    * name contains only one component, the name is unbound in this

  642.    * NamingContext using Unbind(). Otherwise, the first component

  643.    * of the name is resolved in this NamingContext and 

  644.    * unbind passed to the resulting NamingContext.

  645.    * This method is static for maximal reuse - even for extended naming

  646.    * context implementations where the recursive semantics still apply.

  647.    * @param impl an implementation of NamingContextDataStore

  648.    * @param n a sequence of NameComponents which is the name to be unbound.

  649.    * @exception org.omg.CosNaming.NamingContextPackage.NotFound A name with multiple

  650.    * components was supplied, but the first component could not be

  651.    * resolved.

  652.    * @exception org.omg.CosNaming.NamingContextPackage.CannotProceed Could not proceed

  653.    * in resolving the n-1 components of the supplied name.

  654.    * @exception org.omg.CosNaming.NamingContextPackage.InvalidName The supplied name

  655.    * is invalid (i.e., has length less than 1).   

  656.    * @exception org.omg.CORBA.SystemException One of a fixed set of CORBA system exceptions.

  657.    * @see resolve

  658.    */

  659.     public static void doUnbind(NamingContextDataStore impl,

  660. 				NameComponent[] n)

  661. 	throws org.omg.CosNaming.NamingContextPackage.NotFound,

  662. 	       org.omg.CosNaming.NamingContextPackage.CannotProceed,

  663. 	       org.omg.CosNaming.NamingContextPackage.InvalidName

  664.     {

  665. 	// Name valid?

  666. 	if (n.length < 1)

  667. 	    throw new InvalidName();

  668. 

  669.     // Unbind here?

  670. 	if (n.length == 1) {

  671. 	    // The identifier must be set

  672. 	    if ( (n[0].id.length() == 0) && (n[0].kind.length() == 0 ) ) {

  673. 		throw new InvalidName();

  674.             }

  675. 

  676. 	    org.omg.CORBA.Object objRef = null;

  677. 	    synchronized (impl) {

  678. 		// Yes: unbind in this context

  679. 		objRef = impl.Unbind(n[0]);

  680. 	    }

  681.       

  682. 	    if (objRef == null)

  683. 		// It was not bound

  684. 		throw new NotFound(NotFoundReason.missing_node,n);

  685. 	    // Done

  686. 	    return;

  687. 	} else {

  688. 	    // No: unbind in a different context

  689.       

  690.       // Resolve first  - must be resolveable

  691. 	    NamingContext context = resolveFirstAsContext(impl,n);

  692.       

  693. 	    // Compute tail

  694. 	    NameComponent[] tail = new NameComponent[n.length - 1];

  695. 	    System.arraycopy(n,1,tail,0,n.length-1);

  696. 

  697.       // Propagate unbind to this context

  698. 	    context.unbind(tail);

  699. 	}

  700.     }

  701. 

  702.     /**

  703.    * Implements resolving a NameComponent in this context and

  704.    * narrowing it to CosNaming::NamingContext. It will throw appropriate

  705.    * exceptions if not found or not narrowable.

  706.    * @param impl an implementation of NamingContextDataStore

  707.    * @param n a NameComponents which is the name to be found.

  708.    * @exception org.omg.CosNaming.NamingContextPackage.NotFound The

  709.    * first component could not be resolved.

  710.    * @exception org.omg.CosNaming.NamingContextPackage.CannotProceed Could not proceed

  711.    * in resolving the first component of the supplied name.

  712.    * @exception org.omg.CORBA.SystemException One of a fixed set of CORBA system exceptions.

  713.    * @see resolve

  714.    */

  715.     protected static NamingContext resolveFirstAsContext(NamingContextDataStore impl,

  716. 							 NameComponent[] n)

  717. 	throws org.omg.CosNaming.NamingContextPackage.NotFound {

  718. 	org.omg.CORBA.Object topRef = null;

  719. 	BindingTypeHolder bth = new BindingTypeHolder();

  720. 	NamingContext context = null;

  721.     

  722. 	synchronized (impl) {

  723. 	    // Resolve first  - must be resolveable

  724. 	    topRef = impl.Resolve(n[0],bth);

  725. 	    if (topRef == null) {

  726. 		// It was not bound

  727. 		throw new NotFound(NotFoundReason.missing_node,n);

  728. 	    }

  729. 	}

  730.       

  731. 	// Was it bound as a context?

  732. 	if (bth.value != BindingType.ncontext) {

  733. 	    // It was not a context

  734. 	    throw new NotFound(NotFoundReason.not_context,n);

  735. 	}

  736.       

  737. 	// Narrow to a naming context

  738. 	try {

  739. 	    context = NamingContextHelper.narrow(topRef);

  740. 	} catch (org.omg.CORBA.BAD_PARAM ex) {

  741. 	    // It was not a context

  742. 	    throw new NotFound(NotFoundReason.not_context,n);

  743. 	}

  744. 

  745. 	// Hmm. must be ok

  746. 	return context;

  747.     }

  748. 

  749. 

  750.    /**

  751.     * This operation creates a stringified name from the array of Name

  752.     * components.

  753.     * @param n Name of the object <p>

  754.     * @exception org.omg.CosNaming.NamingContextExtPackage.InvalidName

  755.     * Indicates the name does not identify a binding.<p>

  756.     *

  757.     */

  758.     public String to_string(org.omg.CosNaming.NameComponent[] n)

  759. 	 throws org.omg.CosNaming.NamingContextPackage.InvalidName

  760.     {

  761. 	// Name valid?

  762. 	if ( (n == null ) || (n.length == 0) )

  763. 	{

  764. 		throw new InvalidName();

  765. 	}

  766. 	NamingContextDataStore impl = (NamingContextDataStore)this;

  767. 

  768.         String theStringifiedName = insImpl.convertToString( n );

  769. 

  770. 	if( theStringifiedName == null )

  771. 	{

  772. 		throw new InvalidName();

  773. 	}

  774. 	

  775. 	return theStringifiedName;

  776.     }

  777. 

  778. 

  779.    /**

  780.     * This operation  converts a Stringified Name into an  equivalent array

  781.     * of Name Components.

  782.     * @param sn Stringified Name of the object <p>

  783.     * @exception org.omg.CosNaming.NamingContextExtPackage.InvalidName

  784.     * Indicates the name does not identify a binding.<p>

  785.     *

  786.     */

  787.     public org.omg.CosNaming.NameComponent[] to_name(String sn)

  788. 	 throws org.omg.CosNaming.NamingContextPackage.InvalidName

  789.     {

  790. 	// Name valid?

  791. 	if  ( (sn == null ) || (sn.length() == 0) )

  792. 	{

  793. 		throw new InvalidName();

  794. 	}

  795. 	NamingContextDataStore impl = (NamingContextDataStore)this;

  796. 	org.omg.CosNaming.NameComponent[] theNameComponents =

  797. 		insImpl.convertToNameComponent( sn );

  798. 	if( ( theNameComponents == null ) || (theNameComponents.length == 0 ) )

  799. 	{

  800. 		throw new InvalidName();

  801. 	}

  802.         for( int i = 0; i < theNameComponents.length; i++ ) {

  803.             // If there is a name component whose id and kind null or

  804.             // zero length string, then an invalid name exception needs to be

  805.             // raised.

  806.             if ( ( ( theNameComponents[i].id  == null ) 

  807.                  ||( theNameComponents[i].id.length() == 0 ) )

  808.                &&( ( theNameComponents[i].kind == null )

  809.                  ||( theNameComponents[i].kind.length() == 0 ) ) ) {

  810.                 throw new InvalidName();

  811.             }       

  812.         }

  813. 	return theNameComponents;

  814.     }

  815. 

  816.    /**

  817.     * This operation creates a URL based "iiopname://" format name

  818.     * from the Stringified Name of the object.

  819.     * @param addr internet based address of the host machine where  

  820.     * Name Service is running <p>

  821.     * @param sn Stringified Name of the object <p>

  822.     * @exception org.omg.CosNaming.NamingContextExtPackage.InvalidName

  823.     * Indicates the name does not identify a binding.<p>

  824.     * @exception org.omg.CosNaming.NamingContextPackage.InvalidAddress

  825.     * Indicates the internet based address of the host machine is

  826.     * incorrect <p>

  827.     *

  828.     */ 

  829. 

  830.     public String to_url(String addr, String sn)

  831.         throws org.omg.CosNaming.NamingContextExtPackage.InvalidAddress, 

  832.                org.omg.CosNaming.NamingContextPackage.InvalidName

  833.     {

  834. 	// Name valid?

  835. 	if  ( (sn == null ) || (sn.length() == 0) )

  836. 	{

  837. 	    throw new InvalidName();

  838. 	}

  839. 	if( addr == null )

  840. 	{

  841. 	    throw new 

  842.                 org.omg.CosNaming.NamingContextExtPackage.InvalidAddress();

  843. 	}

  844. 	NamingContextDataStore impl = (NamingContextDataStore)this;

  845. 	String urlBasedAddress = null;

  846. 	urlBasedAddress = insImpl.createURLBasedAddress( addr, sn ); 

  847.         // Extra check to see that corba name url created is valid as per

  848.         // INS spec grammer.

  849.         CorbaName corbaName = null;

  850.         try {

  851.             corbaName = ((com.sun.corba.se.internal.corba.ORB)orb).

  852.                 getInitialNamingClient().checkcorbanameGrammer( 

  853.                 urlBasedAddress );

  854.         } catch( BAD_PARAM e ) {

  855.             throw new 

  856.                 org.omg.CosNaming.NamingContextExtPackage.InvalidAddress();

  857.         }

  858.         if ( corbaName == null ) {

  859. 	    throw new InvalidName();

  860. 	}

  861. 	return urlBasedAddress;

  862.     }

  863. 

  864.     /**

  865.      * This operation resolves the Stringified name into the object

  866.      * reference.

  867.      * @param sn Stringified Name of the object <p>

  868.      * @exception org.omg.CosNaming.NamingContextPackage.NotFound

  869.      * Indicates there is no object reference for the given name. <p>

  870.      * @exception org.omg.CosNaming.NamingContextPackage.CannotProceed

  871.      * Indicates that the given compound name is incorrect <p>

  872.      * @exception org.omg.CosNaming.NamingContextExtPackage.InvalidName

  873.      * Indicates the name does not identify a binding.<p>

  874.      * @exception org.omg.CosNaming.NamingContextPackage.AlreadyBound

  875.      * Indicates the name is already bound.<p>

  876.      *

  877.      */

  878.     public org.omg.CORBA.Object resolve_str(String sn)

  879.         throws org.omg.CosNaming.NamingContextPackage.NotFound, 

  880.                org.omg.CosNaming.NamingContextPackage.CannotProceed, 

  881.                org.omg.CosNaming.NamingContextPackage.InvalidName

  882.     {

  883. 	org.omg.CORBA.Object theObject = null;

  884. 	// Name valid?

  885. 	if  ( (sn == null ) || (sn.length() == 0) )

  886. 	{

  887. 		throw new InvalidName();

  888. 	}

  889. 	NamingContextDataStore impl = (NamingContextDataStore)this;

  890. 	org.omg.CosNaming.NameComponent[] theNameComponents =

  891. 		insImpl.convertToNameComponent( sn );

  892. 

  893. 	if( ( theNameComponents == null ) || (theNameComponents.length == 0 ) )

  894. 	{

  895. 		throw new InvalidName();

  896. 	}

  897. 	theObject = resolve( theNameComponents );

  898. 	return theObject;

  899.     }

  900. 

  901. 

  902.     transient protected org.omg.CORBA.ORB orb;

  903.   

  904.     public static String nameToString(NameComponent[] name)

  905.     {

  906. 	StringBuffer s = new StringBuffer("{");

  907. 	if (name != null || name.length > 0) {

  908. 	    for (int i=0;i<name.length;i++) {

  909. 		if (i>0)

  910. 		    s.append(",");

  911. 		s.append("[").

  912. 		    append(name[i].id).

  913. 		    append(",").

  914. 		    append(name[i].kind).

  915. 		    append("]");

  916. 	    }

  917. 	}

  918. 	s.append("}");

  919. 	return s.toString();

  920.     }  

  921. 

  922.     // Debugging aids.

  923.     public static final boolean debug = false;

  924. 

  925.     private static void dprint(String msg) {

  926. 	NamingUtils.dprint("NamingContextImpl("  +

  927. 			   Thread.currentThread().getName() + " at " +

  928. 			   System.currentTimeMillis() +

  929. 			   " ems): " + msg);

  930.     }

  931. }