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Java example source code file (BatchEnvironment.java)

This example Java source code file (BatchEnvironment.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

batchenvironment, classdefinition, classnotfound, classpathloader, constants, contextstack, directoryloader, enumeration, error, hashset, hashtable, main, namecontext, type, util

The BatchEnvironment.java Java example source code

/*
 * Copyright (c) 1998, 2007, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code 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 General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

/*
 * Licensed Materials - Property of IBM
 * RMI-IIOP v1.0
 * Copyright IBM Corp. 1998 1999  All Rights Reserved
 *
 */

package sun.rmi.rmic.iiop;

import sun.rmi.rmic.Main;
import sun.tools.java.ClassPath;
import java.io.OutputStream;
import sun.tools.java.ClassDefinition;
import sun.tools.java.ClassDeclaration;
import sun.tools.java.Identifier;
import sun.tools.java.ClassNotFound;
import java.util.HashSet;
import java.util.Hashtable;
import java.util.Enumeration;
import java.util.Iterator;

/**
 * BatchEnvironment for iiop extends rmic's version to add
 * parse state.
 */
public class BatchEnvironment extends sun.rmi.rmic.BatchEnvironment implements Constants {

    /*
     * If the following flag is true, then the IDL generator can map
     * the methods and constants of non-conforming types. However,
     * this is very expensive, so the default should be false.
     */
    private boolean parseNonConforming = false;

    /**
     * This flag indicates that the stubs and ties need to be generated without
     * the package prefix (org.omg.stub).
     */
    private boolean standardPackage;

    /* Common objects used within package */

    HashSet alreadyChecked = new HashSet();
    Hashtable allTypes = new Hashtable(3001, 0.5f);
    Hashtable invalidTypes = new Hashtable(256, 0.5f);
    DirectoryLoader loader = null;
    ClassPathLoader classPathLoader = null;
    Hashtable nameContexts = null;
    Hashtable namesCache = new Hashtable();
    NameContext modulesContext = new NameContext(false);

    ClassDefinition defRemote = null;
    ClassDefinition defError = null;
    ClassDefinition defException = null;
    ClassDefinition defRemoteException = null;
    ClassDefinition defCorbaObject = null;
    ClassDefinition defSerializable = null;
    ClassDefinition defExternalizable = null;
    ClassDefinition defThrowable = null;
    ClassDefinition defRuntimeException = null;
    ClassDefinition defIDLEntity = null;
    ClassDefinition defValueBase = null;

    sun.tools.java.Type typeRemoteException = null;
    sun.tools.java.Type typeIOException = null;
    sun.tools.java.Type typeException = null;
    sun.tools.java.Type typeThrowable = null;

    ContextStack contextStack = null;

    /**
     * Create a BatchEnvironment for rmic with the given class path,
     * stream for messages and Main.
     */
    public BatchEnvironment(OutputStream out, ClassPath path, Main main) {

        super(out,path,main);

        // Make sure we have our definitions...

        try {
            defRemote =
                getClassDeclaration(idRemote).getClassDefinition(this);
            defError =
                getClassDeclaration(idJavaLangError).getClassDefinition(this);
            defException =
                getClassDeclaration(idJavaLangException).getClassDefinition(this);
            defRemoteException =
                getClassDeclaration(idRemoteException).getClassDefinition(this);
            defCorbaObject =
                getClassDeclaration(idCorbaObject).getClassDefinition(this);
            defSerializable =
                getClassDeclaration(idJavaIoSerializable).getClassDefinition(this);
            defRuntimeException =
                getClassDeclaration(idJavaLangRuntimeException).getClassDefinition(this);
            defExternalizable =
                getClassDeclaration(idJavaIoExternalizable).getClassDefinition(this);
            defThrowable=
                getClassDeclaration(idJavaLangThrowable).getClassDefinition(this);
            defIDLEntity=
                getClassDeclaration(idIDLEntity).getClassDefinition(this);
            defValueBase=
                getClassDeclaration(idValueBase).getClassDefinition(this);
            typeRemoteException = defRemoteException.getClassDeclaration().getType();
            typeException = defException.getClassDeclaration().getType();
            typeIOException = getClassDeclaration(idJavaIoIOException).getType();
            typeThrowable = getClassDeclaration(idJavaLangThrowable).getType();

            classPathLoader = new ClassPathLoader(path);

        } catch (ClassNotFound e) {
            error(0, "rmic.class.not.found", e.name);
            throw new Error();
        }
    }

    /**
     * Return whether or not to parse non-conforming types.
     */
    public boolean getParseNonConforming () {
        return parseNonConforming;
    }

    /**
     * Set whether or not to parse non-conforming types.
     */
    public void setParseNonConforming (boolean parseEm) {

        // If we are transitioning from not parsing to
        // parsing, we need to throw out any previously
        // parsed types...

        if (parseEm && !parseNonConforming) {
            reset();
        }

        parseNonConforming = parseEm;
    }

    void setStandardPackage(boolean standardPackage) {
        this.standardPackage = standardPackage;
    }

    boolean getStandardPackage() {
        return standardPackage;
    }

    /**
     * Clear out any data from previous executions.
     */
    public void reset () {

        // First, find all Type instances and call destroy()
        // on them...

        for (Enumeration e = allTypes.elements() ; e.hasMoreElements() ;) {
            Type type = (Type) e.nextElement();
            type.destroy();
        }

        for (Enumeration e = invalidTypes.keys() ; e.hasMoreElements() ;) {
            Type type = (Type) e.nextElement();
            type.destroy();
        }

        for (Iterator e = alreadyChecked.iterator() ; e.hasNext() ;) {
            Type type = (Type) e.next();
            type.destroy();
        }

        if (contextStack != null) contextStack.clear();

        // Remove and clear all NameContexts in the
        // nameContexts cache...

        if (nameContexts != null) {
            for (Enumeration e = nameContexts.elements() ; e.hasMoreElements() ;) {
                NameContext context = (NameContext) e.nextElement();
                context.clear();
            }
            nameContexts.clear();
        }

        // Now remove all table entries...

        allTypes.clear();
        invalidTypes.clear();
        alreadyChecked.clear();
        namesCache.clear();
        modulesContext.clear();

        // Clean up remaining...
        loader = null;
        parseNonConforming = false;

        // REVISIT - can't clean up classPathLoader here
    }

    /**
     * Release resources, if any.
     */
    public void shutdown() {
        if (alreadyChecked != null) {
            //System.out.println();
            //System.out.println("allTypes.size() = "+ allTypes.size());
            //System.out.println("    InstanceCount before reset = "+Type.instanceCount);
            reset();
            //System.out.println("    InstanceCount AFTER reset = "+Type.instanceCount);

            alreadyChecked = null;
            allTypes = null;
            invalidTypes = null;
            nameContexts = null;
            namesCache = null;
            modulesContext = null;
            defRemote = null;
            defError = null;
            defException = null;
            defRemoteException = null;
            defCorbaObject = null;
            defSerializable = null;
            defExternalizable = null;
            defThrowable = null;
            defRuntimeException = null;
            defIDLEntity = null;
            defValueBase = null;
            typeRemoteException = null;
            typeIOException = null;
            typeException = null;
            typeThrowable = null;

            super.shutdown();
        }
    }
}

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