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1: /* DoubleSeqHelper.java -- 2: Copyright (C) 2005 Free Software Foundation, Inc. 3: 4: This file is part of GNU Classpath. 5: 6: GNU Classpath is free software; you can redistribute it and/or modify 7: it under the terms of the GNU General Public License as published by 8: the Free Software Foundation; either version 2, or (at your option) 9: any later version. 10: 11: GNU Classpath is distributed in the hope that it will be useful, but 12: WITHOUT ANY WARRANTY; without even the implied warranty of 13: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14: General Public License for more details. 15: 16: You should have received a copy of the GNU General Public License 17: along with GNU Classpath; see the file COPYING. If not, write to the 18: Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 19: 02110-1301 USA. 20: 21: Linking this library statically or dynamically with other modules is 22: making a combined work based on this library. Thus, the terms and 23: conditions of the GNU General Public License cover the whole 24: combination. 25: 26: As a special exception, the copyright holders of this library give you 27: permission to link this library with independent modules to produce an 28: executable, regardless of the license terms of these independent 29: modules, and to copy and distribute the resulting executable under 30: terms of your choice, provided that you also meet, for each linked 31: independent module, the terms and conditions of the license of that 32: module. An independent module is a module which is not derived from 33: or based on this library. If you modify this library, you may extend 34: this exception to your version of the library, but you are not 35: obligated to do so. If you do not wish to do so, delete this 36: exception statement from your version. */ 37: 38: 39: package org.omg.CORBA; 40: 41: import gnu.CORBA.typecodes.ArrayTypeCode; 42: 43: import org.omg.CORBA.TypeCodePackage.BadKind; 44: import org.omg.CORBA.portable.InputStream; 45: import org.omg.CORBA.portable.OutputStream; 46: 47: /** 48: * Provides static helper methods for working with 49: * CORBA sequence of <code>double</code> 50: * (<code>DoubleSeq</code>). 51: * 52: * @author Audrius Meskauskas (AudriusA@Bioinformatics.org) 53: */ 54: public abstract class DoubleSeqHelper 55: { 56: /** 57: * Extract the <code>double[]</code> from the 58: * given {@link Any}. This implementation expects the 59: * {@link Any} to hold the instance of {@link DoubleSeqHolder} 60: * that is returned by {@link Any#extract_Streamable() }. 61: * 62: * @param a an Any to extract the array from. 63: * 64: * @return the extracted array. 65: * 66: * @throws ClassCastException if the Any contains something other than the 67: * the {@link DoubleSeqHolder}. 68: */ 69: public static double[] extract(Any a) 70: { 71: DoubleSeqHolder h = (DoubleSeqHolder) a.extract_Streamable(); 72: return h.value; 73: } 74: 75: /** 76: * Returns the agreed Id, delegating functionality to 77: * the {@link #type()}.id(). 78: */ 79: public static String id() 80: { 81: try 82: { 83: return type().id(); 84: } 85: catch (BadKind ex) 86: { 87: // Should never happen under correct work. 88: throw new Error("Please report this bug.", ex); 89: } 90: } 91: 92: /** 93: * Insert into the given <code>double[]</code> into the 94: * given {@link Any}. This implementation first creates 95: * a {@link DoubleSeqHolder} and then calls 96: * {@link Any#insert_Streamable(Streamable)}. 97: * 98: * @param into the target Any. 99: * @param that the array to insert. 100: */ 101: public static void insert(Any into, double[] that) 102: { 103: DoubleSeqHolder holder = new DoubleSeqHolder(that); 104: into.insert_Streamable(holder); 105: } 106: 107: /** 108: * Reads the <code>double[]</code> from the CORBA input stream. 109: * 110: * @param input the CORBA (not java.io) stream to read from. 111: * @return the value from the stream. 112: */ 113: public static double[] read(InputStream input) 114: { 115: double[] value = new double[ input.read_long() ]; 116: input.read_double_array(value, 0, value.length); 117: return value; 118: } 119: 120: /** 121: * Creates and returns a new instance of the TypeCode, 122: * corresponding the CORBA <code>DoubleSeq</code>. 123: * The length of the sequence is left with the initial 124: * value 0. 125: */ 126: public static TypeCode type() 127: { 128: return new ArrayTypeCode(TCKind.tk_double); 129: } 130: 131: /** 132: * Writes the <code>double[]</code> into the given stream. 133: * 134: * @param output the CORBA (not java.io) output stream to write. 135: * @param value the value that must be written. 136: */ 137: public static void write(OutputStream output, double[] value) 138: { 139: output.write_long(value.length); 140: output.write_double_array(value, 0, value.length); 141: } 142: }
GNU Classpath (0.20) |