| /* |
| * Copyright (c) 2000, 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. |
| */ |
| |
| package com.sun.corba.se.impl.ior; |
| |
| import java.util.List; |
| import java.util.LinkedList; |
| import java.util.Iterator; |
| |
| import org.omg.IOP.TAG_INTERNET_IOP ; |
| |
| import org.omg.CORBA_2_3.portable.OutputStream ; |
| import org.omg.CORBA_2_3.portable.InputStream ; |
| |
| import com.sun.corba.se.spi.ior.TaggedComponent ; |
| import com.sun.corba.se.spi.ior.Identifiable ; |
| import com.sun.corba.se.spi.ior.IdentifiableFactoryFinder ; |
| import com.sun.corba.se.spi.ior.WriteContents ; |
| |
| import com.sun.corba.se.spi.orb.ORB ; |
| |
| import com.sun.corba.se.impl.ior.FreezableList ; |
| |
| import com.sun.corba.se.impl.encoding.CDROutputStream ; |
| import com.sun.corba.se.impl.encoding.EncapsOutputStream ; |
| import com.sun.corba.se.impl.encoding.EncapsInputStream ; |
| |
| import sun.corba.EncapsInputStreamFactory; |
| |
| /** |
| * This static utility class contains various utility methods for reading and |
| * writing CDR encapsulations. |
| * |
| * @author Ken Cavanaugh |
| */ |
| public class EncapsulationUtility |
| { |
| private EncapsulationUtility() |
| { |
| } |
| |
| /** Read the count from is, then read count Identifiables from |
| * is using the factory. Add each constructed Identifiable to container. |
| */ |
| public static void readIdentifiableSequence( List container, |
| IdentifiableFactoryFinder finder, InputStream istr) |
| { |
| int count = istr.read_long() ; |
| for (int ctr = 0; ctr<count; ctr++) { |
| int id = istr.read_long() ; |
| Identifiable obj = finder.create( id, istr ) ; |
| container.add( obj ) ; |
| } |
| } |
| |
| /** Write all Identifiables that we contain to os. The total |
| * length must be written before this method is called. |
| */ |
| public static void writeIdentifiableSequence( List container, OutputStream os) |
| { |
| os.write_long( container.size() ) ; |
| Iterator iter = container.iterator() ; |
| while (iter.hasNext()) { |
| Identifiable obj = (Identifiable)( iter.next() ) ; |
| os.write_long( obj.getId() ) ; |
| obj.write( os ) ; |
| } |
| } |
| |
| /** Helper method that is used to extract data from an output |
| * stream and write the data to another output stream. Defined |
| * as static so that it can be used in another class. |
| */ |
| static public void writeOutputStream( OutputStream dataStream, |
| OutputStream os ) |
| { |
| byte[] data = ((CDROutputStream)dataStream).toByteArray() ; |
| os.write_long( data.length ) ; |
| os.write_octet_array( data, 0, data.length ) ; |
| } |
| |
| /** Helper method to read the octet array from is, deencapsulate it, |
| * and return |
| * as another InputStream. This must be called inside the |
| * constructor of a derived class to obtain the correct stream |
| * for unmarshalling data. |
| */ |
| static public InputStream getEncapsulationStream( InputStream is ) |
| { |
| byte[] data = readOctets( is ) ; |
| EncapsInputStream result = EncapsInputStreamFactory.newEncapsInputStream( is.orb(), data, |
| data.length ) ; |
| result.consumeEndian() ; |
| return result ; |
| } |
| |
| /** Helper method that reads an octet array from an input stream. |
| * Defined as static here so that it can be used in another class. |
| */ |
| static public byte[] readOctets( InputStream is ) |
| { |
| int len = is.read_ulong() ; |
| byte[] data = new byte[len] ; |
| is.read_octet_array( data, 0, len ) ; |
| return data ; |
| } |
| |
| static public void writeEncapsulation( WriteContents obj, |
| OutputStream os ) |
| { |
| EncapsOutputStream out = |
| sun.corba.OutputStreamFactory.newEncapsOutputStream((ORB)os.orb()); |
| |
| out.putEndian() ; |
| |
| obj.writeContents( out ) ; |
| |
| writeOutputStream( out, os ) ; |
| } |
| } |