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/*
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* Copyright (c) 1998, 2007, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* Licensed Materials - Property of IBM
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* RMI-IIOP v1.0
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* Copyright IBM Corp. 1998 1999 All Rights Reserved
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*
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*/
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package sun.rmi.rmic.iiop;
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import java.util.Vector;
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import sun.tools.java.CompilerError;
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import sun.tools.java.ClassDefinition;
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import sun.tools.java.ClassNotFound;
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/**
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* RemoteType represents any non-special interface which inherits
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* from java.rmi.Remote.
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* <p>
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* The static forRemote(...) method must be used to obtain an instance, and will
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* return null if the ClassDefinition is non-conforming.
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* @author Bryan Atsatt
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*/
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public class RemoteType extends InterfaceType {
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//_____________________________________________________________________
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// Public Interfaces
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//_____________________________________________________________________
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/**
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* Create an RemoteType for the given class.
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*
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* If the class is not a properly formed or if some other error occurs, the
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* return value will be null, and errors will have been reported to the
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* supplied BatchEnvironment.
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*/
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public static RemoteType forRemote(ClassDefinition classDef,
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ContextStack stack,
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boolean quiet) {
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if (stack.anyErrors()) return null;
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boolean doPop = false;
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RemoteType result = null;
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try {
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// Do we already have it?
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sun.tools.java.Type theType = classDef.getType();
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Type existing = getType(theType,stack);
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if (existing != null) {
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if (!(existing instanceof RemoteType)) return null; // False hit.
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// Yep, so return it...
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return (RemoteType) existing;
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}
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// Could this be a remote type?
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if (couldBeRemote(quiet,stack,classDef)) {
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// Yes, so check it...
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RemoteType it = new RemoteType(stack,classDef);
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putType(theType,it,stack);
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stack.push(it);
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doPop = true;
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if (it.initialize(quiet,stack)) {
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stack.pop(true);
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result = it;
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} else {
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removeType(theType,stack);
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stack.pop(false);
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}
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}
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} catch (CompilerError e) {
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if (doPop) stack.pop(false);
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}
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return result;
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}
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/**
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* Return a string describing this type.
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*/
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public String getTypeDescription () {
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return "Remote interface";
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}
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//_____________________________________________________________________
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// Internal/Subclass Interfaces
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//_____________________________________________________________________
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/**
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* Create a RemoteType instance for the given class. The resulting
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* object is not yet completely initialized.
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*/
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protected RemoteType(ContextStack stack, ClassDefinition classDef) {
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super(stack,classDef,TYPE_REMOTE | TM_INTERFACE | TM_COMPOUND);
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}
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/**
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* Create a RemoteType instance for the given class. The resulting
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* object is not yet completely initialized.
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*/
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protected RemoteType(ContextStack stack, ClassDefinition classDef, int typeCode) {
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super(stack,classDef,typeCode);
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}
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//_____________________________________________________________________
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// Internal Interfaces
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//_____________________________________________________________________
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private static boolean couldBeRemote (boolean quiet, ContextStack stack,
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ClassDefinition classDef) {
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boolean result = false;
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BatchEnvironment env = stack.getEnv();
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try {
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if (!classDef.isInterface()) {
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failedConstraint(16,quiet,stack,classDef.getName());
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} else {
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result = env.defRemote.implementedBy(env,classDef.getClassDeclaration());
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if (!result) failedConstraint(1,quiet,stack,classDef.getName());
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}
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} catch (ClassNotFound e) {
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classNotFound(stack,e);
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}
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return result;
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}
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/**
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* Initialize this instance.
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*/
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private boolean initialize (boolean quiet,ContextStack stack) {
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boolean result = false;
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// Go check it out and gather up the info we need...
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Vector directInterfaces = new Vector();
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Vector directMethods = new Vector();
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Vector directConstants = new Vector();
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if (isConformingRemoteInterface(directInterfaces,
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directMethods,
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directConstants,
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quiet,
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stack)){
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// We're ok, so pass 'em up...
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result = initialize(directInterfaces,directMethods,directConstants,stack,quiet);
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}
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return result;
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}
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/**
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* Check to ensure that the interface and all it's methods and arguments
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* conforms to the RMI/IDL java subset for remote interfaces as defined
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* by the "Java to IDL Mapping" specification, section 4.
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* @param directInterfaces All directly implmented interfaces will be
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* added to this list.
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* @param directMethods All directly implemented methods (other than
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* constructors and initializers) will be added to this list.
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* @param directConstants All constants defined by theInterface will be
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* added to this list.
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* @param quiet True if should not report constraint failures.
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* @return true if constraints satisfied, false otherwise.
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*/
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private boolean isConformingRemoteInterface ( Vector directInterfaces,
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Vector directMethods,
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Vector directConstants,
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boolean quiet,
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ContextStack stack) {
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ClassDefinition theInterface = getClassDefinition();
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try {
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// Get all remote interfaces...
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if (addRemoteInterfaces(directInterfaces,false,stack) == null ) {
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return false;
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}
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// Make sure all constants are conforming...
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if (!addAllMembers(directConstants,true,quiet,stack)) {
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return false;
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}
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// Now, collect up all methods...
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if (addAllMethods(theInterface,directMethods,true,quiet,stack) == null) {
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// Failed a constraint check...
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return false;
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}
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// Now walk 'em, ensuring each is a valid remote method...
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boolean methodsConform = true;
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for (int i = 0; i < directMethods.size(); i++) {
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if (! isConformingRemoteMethod((Method) directMethods.elementAt(i),quiet)) {
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methodsConform = false;
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}
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}
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if (!methodsConform) {
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return false;
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}
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} catch (ClassNotFound e) {
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classNotFound(stack,e);
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return false;
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}
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return true;
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}
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}
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