Java example source code file (InputStream.java)

This example Java source code file (InputStream.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

allow_subclass_prop, boolean, inputstream, override, privilegedaction, security, securitymanager, serializablepermission, string, void

The InputStream.java Java example source code

/*
 * Copyright (c) 1998, 2013, 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 org.omg.CORBA_2_3.portable;

import java.io.SerializablePermission;
import java.security.AccessController;
import java.security.PrivilegedAction;

/**
 * InputStream provides for the reading of all of the mapped IDL types
 * from the stream. It extends org.omg.CORBA.portable.InputStream.  This
 * class defines new methods that were added for CORBA 2.3.
 *
 * @see org.omg.CORBA.portable.InputStream
 * @author  OMG
 * @since   JDK1.2
 */

public abstract class InputStream extends org.omg.CORBA.portable.InputStream {


    private static final String ALLOW_SUBCLASS_PROP = "jdk.corba.allowInputStreamSubclass";

    private static final boolean allowSubclass = AccessController.doPrivileged(
        new PrivilegedAction<Boolean>() {
            @Override
            public Boolean run() {
            String prop = System.getProperty(ALLOW_SUBCLASS_PROP);
                return prop == null ? false :
                           (prop.equalsIgnoreCase("false") ? false : true);
            }
        });

    private static Void checkPermission() {
        SecurityManager sm = System.getSecurityManager();
        if (sm != null) {
            if (!allowSubclass)
                sm.checkPermission(new
                    SerializablePermission("enableSubclassImplementation"));
        }
        return null;
    }

    private InputStream(Void ignore) { }

    /**
     * Create a new instance of this class.
     *
     * throw SecurityException if SecurityManager is installed and
     * enableSubclassImplementation SerializablePermission
     * is not granted or jdk.corba.allowOutputStreamSubclass system
     * property is either not set or is set to 'false'
     */
    public InputStream() {
        this(checkPermission());
    }

    /**
     * Unmarshalls a value type from the input stream.
     * @return the value type unmarshalled from the input stream
     */
    public java.io.Serializable read_value() {
        throw new org.omg.CORBA.NO_IMPLEMENT();
    }

    /**
     * Unmarshalls a value type from the input stream.
     * @param clz is the declared type of the value to be unmarshalled
     * @return the value unmarshalled from the input stream
     */
    public java.io.Serializable read_value(java.lang.Class clz) {
        throw new org.omg.CORBA.NO_IMPLEMENT();
    }

    /**
     * Unmarshalls a value type from the input stream.
     * @param factory is the instance fo the helper to be used for
     * unmarshalling the value type
     * @return the value unmarshalled from the input stream
     */
    public java.io.Serializable read_value(org.omg.CORBA.portable.BoxedValueHelper factory) {
        throw new org.omg.CORBA.NO_IMPLEMENT();
    }

    /**
     * Unmarshalls a value type from the input stream.
     * @param rep_id identifies the type of the value to be unmarshalled
     * @return value type unmarshalled from the input stream
     */
    public java.io.Serializable read_value(java.lang.String rep_id) {
        throw new org.omg.CORBA.NO_IMPLEMENT();
    }

    /**
     * Unmarshalls a value type from the input stream.
     * @param value is an uninitialized value which is added to the orb's
     * indirection table before calling Streamable._read() or
     * CustomMarshal.unmarshal() to unmarshal the value.
     * @return value type unmarshalled from the input stream
     */
    public java.io.Serializable read_value(java.io.Serializable value) {
        throw new org.omg.CORBA.NO_IMPLEMENT();
    }

    /**
     * Unmarshal the value object or a suitable stub object.
     * @return ORB runtime returns the value object or a suitable stub object.
     */
    public java.lang.Object read_abstract_interface() {
        throw new org.omg.CORBA.NO_IMPLEMENT();
    }

    /**
     * Unmarshal the class object or the stub class corresponding to the passed type.
     * @param clz is the Class object for the stub class which corresponds to
     * the type that is statically expected.
     * @return ORB runtime returns the value object or a suitable stub object.
     */
    public java.lang.Object read_abstract_interface(java.lang.Class clz) {
        throw new org.omg.CORBA.NO_IMPLEMENT();
    }

}