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src/share/classes/com/sun/corba/se/impl/ior/EncapsulationUtility.java@6845b95cba6b (annotated)

src/share/classes/com/sun/corba/se/impl/ior/EncapsulationUtility.java

Thu, 31 Aug 2017 18:10:36 +0800

author

aoqi

date

Thu, 31 Aug 2017 18:10:36 +0800

changeset 748

6845b95cba6b

parent 566

7ec1c16f6fb8

parent 0

7ef37b2cdcad

permissions

-rw-r--r--

merge

aoqi@0	1	/*
aoqi@0	2	* Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved.
aoqi@0	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0	4	*
aoqi@0	5	* This code is free software; you can redistribute it and/or modify it
aoqi@0	6	* under the terms of the GNU General Public License version 2 only, as
aoqi@0	7	* published by the Free Software Foundation. Oracle designates this
aoqi@0	8	* particular file as subject to the "Classpath" exception as provided
aoqi@0	9	* by Oracle in the LICENSE file that accompanied this code.
aoqi@0	10	*
aoqi@0	11	* This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0	12	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0	13	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
aoqi@0	14	* version 2 for more details (a copy is included in the LICENSE file that
aoqi@0	15	* accompanied this code).
aoqi@0	16	*
aoqi@0	17	* You should have received a copy of the GNU General Public License version
aoqi@0	18	* 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0	19	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0	20	*
aoqi@0	21	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0	22	* or visit www.oracle.com if you need additional information or have any
aoqi@0	23	* questions.
aoqi@0	24	*/
aoqi@0	25
aoqi@0	26	package com.sun.corba.se.impl.ior;
aoqi@0	27
aoqi@0	28	import java.util.List;
aoqi@0	29	import java.util.LinkedList;
aoqi@0	30	import java.util.Iterator;
aoqi@0	31
aoqi@0	32	import org.omg.IOP.TAG_INTERNET_IOP ;
aoqi@0	33
aoqi@0	34	import org.omg.CORBA_2_3.portable.OutputStream ;
aoqi@0	35	import org.omg.CORBA_2_3.portable.InputStream ;
aoqi@0	36
aoqi@0	37	import com.sun.corba.se.spi.ior.TaggedComponent ;
aoqi@0	38	import com.sun.corba.se.spi.ior.Identifiable ;
aoqi@0	39	import com.sun.corba.se.spi.ior.IdentifiableFactoryFinder ;
aoqi@0	40	import com.sun.corba.se.spi.ior.WriteContents ;
aoqi@0	41
aoqi@0	42	import com.sun.corba.se.spi.orb.ORB ;
aoqi@0	43
aoqi@0	44	import com.sun.corba.se.impl.ior.FreezableList ;
aoqi@0	45
aoqi@0	46	import com.sun.corba.se.impl.encoding.CDROutputStream ;
aoqi@0	47	import com.sun.corba.se.impl.encoding.EncapsOutputStream ;
aoqi@0	48	import com.sun.corba.se.impl.encoding.EncapsInputStream ;
aoqi@0	49
aoqi@0	50	import sun.corba.EncapsInputStreamFactory;
aoqi@0	51
aoqi@0	52	/**
aoqi@0	53	* This static utility class contains various utility methods for reading and
aoqi@0	54	* writing CDR encapsulations.
aoqi@0	55	*
aoqi@0	56	* @author Ken Cavanaugh
aoqi@0	57	*/
aoqi@0	58	public class EncapsulationUtility
aoqi@0	59	{
aoqi@0	60	private EncapsulationUtility()
aoqi@0	61	{
aoqi@0	62	}
aoqi@0	63
aoqi@0	64	/** Read the count from is, then read count Identifiables from
aoqi@0	65	* is using the factory. Add each constructed Identifiable to container.
aoqi@0	66	*/
aoqi@0	67	public static void readIdentifiableSequence( List container,
aoqi@0	68	IdentifiableFactoryFinder finder, InputStream istr)
aoqi@0	69	{
aoqi@0	70	int count = istr.read_long() ;
aoqi@0	71	for (int ctr = 0; ctr<count; ctr++) {
aoqi@0	72	int id = istr.read_long() ;
aoqi@0	73	Identifiable obj = finder.create( id, istr ) ;
aoqi@0	74	container.add( obj ) ;
aoqi@0	75	}
aoqi@0	76	}
aoqi@0	77
aoqi@0	78	/** Write all Identifiables that we contain to os. The total
aoqi@0	79	* length must be written before this method is called.
aoqi@0	80	*/
aoqi@0	81	public static void writeIdentifiableSequence( List container, OutputStream os)
aoqi@0	82	{
aoqi@0	83	os.write_long( container.size() ) ;
aoqi@0	84	Iterator iter = container.iterator() ;
aoqi@0	85	while (iter.hasNext()) {
aoqi@0	86	Identifiable obj = (Identifiable)( iter.next() ) ;
aoqi@0	87	os.write_long( obj.getId() ) ;
aoqi@0	88	obj.write( os ) ;
aoqi@0	89	}
aoqi@0	90	}
aoqi@0	91
aoqi@0	92	/** Helper method that is used to extract data from an output
aoqi@0	93	* stream and write the data to another output stream. Defined
aoqi@0	94	* as static so that it can be used in another class.
aoqi@0	95	*/
aoqi@0	96	static public void writeOutputStream( OutputStream dataStream,
aoqi@0	97	OutputStream os )
aoqi@0	98	{
aoqi@0	99	byte[] data = ((CDROutputStream)dataStream).toByteArray() ;
aoqi@0	100	os.write_long( data.length ) ;
aoqi@0	101	os.write_octet_array( data, 0, data.length ) ;
aoqi@0	102	}
aoqi@0	103
aoqi@0	104	/** Helper method to read the octet array from is, deencapsulate it,
aoqi@0	105	* and return
aoqi@0	106	* as another InputStream. This must be called inside the
aoqi@0	107	* constructor of a derived class to obtain the correct stream
aoqi@0	108	* for unmarshalling data.
aoqi@0	109	*/
aoqi@0	110	static public InputStream getEncapsulationStream( InputStream is )
aoqi@0	111	{
aoqi@0	112	byte[] data = readOctets( is ) ;
aoqi@0	113	EncapsInputStream result = EncapsInputStreamFactory.newEncapsInputStream( is.orb(), data,
aoqi@0	114	data.length ) ;
aoqi@0	115	result.consumeEndian() ;
aoqi@0	116	return result ;
aoqi@0	117	}
aoqi@0	118
aoqi@0	119	/** Helper method that reads an octet array from an input stream.
aoqi@0	120	* Defined as static here so that it can be used in another class.
aoqi@0	121	*/
aoqi@0	122	static public byte[] readOctets( InputStream is )
aoqi@0	123	{
aoqi@0	124	int len = is.read_ulong() ;
aoqi@0	125	byte[] data = new byte[len] ;
aoqi@0	126	is.read_octet_array( data, 0, len ) ;
aoqi@0	127	return data ;
aoqi@0	128	}
aoqi@0	129
aoqi@0	130	static public void writeEncapsulation( WriteContents obj,
aoqi@0	131	OutputStream os )
aoqi@0	132	{
aoqi@0	133	EncapsOutputStream out =
aoqi@0	134	sun.corba.OutputStreamFactory.newEncapsOutputStream((ORB)os.orb());
aoqi@0	135
aoqi@0	136	out.putEndian() ;
aoqi@0	137
aoqi@0	138	obj.writeContents( out ) ;
aoqi@0	139
aoqi@0	140	writeOutputStream( out, os ) ;
aoqi@0	141	}
aoqi@0	142	}