001 /* BooleanSeqHelper.java --
002 Copyright (C) 2005, 2006 Free Software Foundation, Inc.
003
004 This file is part of GNU Classpath.
005
006 GNU Classpath is free software; you can redistribute it and/or modify
007 it under the terms of the GNU General Public License as published by
008 the Free Software Foundation; either version 2, or (at your option)
009 any later version.
010
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012 WITHOUT ANY WARRANTY; without even the implied warranty of
013 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
014 General Public License for more details.
015
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017 along with GNU Classpath; see the file COPYING. If not, write to the
018 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
019 02110-1301 USA.
020
021 Linking this library statically or dynamically with other modules is
022 making a combined work based on this library. Thus, the terms and
023 conditions of the GNU General Public License cover the whole
024 combination.
025
026 As a special exception, the copyright holders of this library give you
027 permission to link this library with independent modules to produce an
028 executable, regardless of the license terms of these independent
029 modules, and to copy and distribute the resulting executable under
030 terms of your choice, provided that you also meet, for each linked
031 independent module, the terms and conditions of the license of that
032 module. An independent module is a module which is not derived from
033 or based on this library. If you modify this library, you may extend
034 this exception to your version of the library, but you are not
035 obligated to do so. If you do not wish to do so, delete this
036 exception statement from your version. */
037
038
039 package org.omg.CORBA;
040
041 import gnu.CORBA.typecodes.ArrayTypeCode;
042
043 import org.omg.CORBA.TypeCodePackage.BadKind;
044 import org.omg.CORBA.portable.InputStream;
045 import org.omg.CORBA.portable.OutputStream;
046 import org.omg.CORBA.portable.Streamable;
047
048 /**
049 * Provides static helper methods for working with
050 * CORBA sequence of <code>boolean</code>
051 * (<code>BooleanSeq</code>).
052 *
053 * @author Audrius Meskauskas (AudriusA@Bioinformatics.org)
054 */
055 public abstract class BooleanSeqHelper
056 {
057 /**
058 * Extract the <code>boolean[]</code> from the
059 * given {@link Any}. This implementation expects the
060 * {@link Any} to hold the instance of {@link BooleanSeqHolder}
061 * that is returned by {@link Any#extract_Streamable() }.
062 *
063 * @param a an Any to extract the array from.
064 *
065 * @return the extracted array.
066 *
067 * @throws ClassCastException if the Any contains something other than the
068 * the {@link BooleanSeqHolder}.
069 */
070 public static boolean[] extract(Any a)
071 {
072 BooleanSeqHolder h = (BooleanSeqHolder) a.extract_Streamable();
073 return h.value;
074 }
075
076 /**
077 * Returns the agreed Id, delegating functionality to
078 * the {@link #type()}.id().
079 */
080 public static String id()
081 {
082 try
083 {
084 return type().id();
085 }
086 catch (BadKind ex)
087 {
088 // Should never happen under correct work.
089 throw new Error("Please report this bug.", ex);
090 }
091 }
092
093 /**
094 * Insert into the given <code>boolean[]</code> into the
095 * given {@link Any}. This implementation first creates
096 * a {@link BooleanSeqHolder} and then calls
097 * {@link Any#insert_Streamable(Streamable)}.
098 *
099 * @param into the target Any.
100 * @param that the array to insert.
101 */
102 public static void insert(Any into, boolean[] that)
103 {
104 BooleanSeqHolder holder = new BooleanSeqHolder(that);
105 into.insert_Streamable(holder);
106 }
107
108 /**
109 * Reads the <code>boolean[]</code> from the CORBA input stream.
110 *
111 * @param input the CORBA (not java.io) stream to read from.
112 * @return the value from the stream.
113 */
114 public static boolean[] read(InputStream input)
115 {
116 boolean [] value = new boolean[ input.read_long() ];
117 input.read_boolean_array(value, 0, value.length);
118 return value;
119 }
120
121 /**
122 * Creates and returns a new instance of the TypeCode,
123 * corresponding the CORBA <code>BooleanSeq</code>.
124 * The length of the sequence is left with the initial
125 * value 0.
126 */
127 public static TypeCode type()
128 {
129 return new ArrayTypeCode(TCKind.tk_boolean);
130 }
131
132 /**
133 * Writes the <code>boolean[]</code> into the given stream.
134 *
135 * @param output the CORBA (not java.io) output stream to write.
136 * @param value the value that must be written.
137 */
138 public static void write(OutputStream output, boolean[] value)
139 {
140 output.write_long(value.length);
141 output.write_boolean_array(value, 0, value.length);
142 }
143 }