8f523f3a10
* sources.am: Regenerated. * Makefile.in: Likewise. * scripts/makemake.tcl: Use glob -nocomplain. From-SVN: r107049
111 lines
3.9 KiB
Java
111 lines
3.9 KiB
Java
/* StubLocator.java --
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Copyright (C) 2005 Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package gnu.CORBA;
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import org.omg.CORBA.ORB;
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import org.omg.CORBA.portable.ObjectImpl;
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/**
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* Finds a stub class like "_HelloStub" that can be instantiated
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* from IOR reference. The returned object can be casted to the
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* used type like "Hello" without using the helper .narrow method,
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* and the object is not unnsecessarily re - instantiated if
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* the .narrow method is used anyway. If no stub, matching the naming
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* conventions, is available, the returned stub replacement can still be used
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* to get the valid request, add parameter and invoke the method by name.
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*
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* @author Audrius Meskauskas (AudriusA@Bioinformatics.org)
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*/
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public class StubLocator
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{
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/**
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* Search for the possibly available default stub.
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*
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* @param orb the current ORB. It is not required to find the binding
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* classes, but is needed to instantiate the default implementation
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* if no binding classes are found.
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*
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* @param ior the IOR, possibly containing the information about the
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* correct implementation class.
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*/
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public static ObjectImpl search(ORB orb, IOR ior)
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{
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try
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{
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int a = ior.Id.indexOf(':');
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int b = ior.Id.lastIndexOf(':');
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String s = ior.Id.substring(a + 1, b).replace('/', '.');
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String path;
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b = s.lastIndexOf('.');
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if (b > 0)
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path = s.substring(0, b + 1);
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else
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path = "";
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String stub = "_" + s.substring(b + 1) + "Stub";
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Class stubClass = ObjectCreator.forName(path + stub);
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return (ObjectImpl) stubClass.newInstance();
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}
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catch (Exception failed)
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{
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// Various exceptions can be thrown if the Id cannot be parsed,
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// the class is missing, cannot be instantiated or is not an
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// instance of the ObjectImpl.
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return createDefaultStub(orb, ior);
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}
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}
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/**
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* Return the default stub for the case when the client binding classes
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* are not locally available. The returned stub can still be used
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* to get the valid request, add parameter and invoke the method by name.
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*
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* @return the default implementation.
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*/
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protected static ObjectImpl createDefaultStub(ORB orb, IOR ior)
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{
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return new IorObject(orb, ior);
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}
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}
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