| Frames | No Frames |
1: /* universalStreamable.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 gnu.CORBA; 40: 41: import gnu.CORBA.CDR.BufferredCdrInput; 42: import gnu.CORBA.CDR.BufferedCdrOutput; 43: 44: import org.omg.CORBA.BAD_OPERATION; 45: import org.omg.CORBA.MARSHAL; 46: import org.omg.CORBA.TypeCode; 47: import org.omg.CORBA.portable.InputStream; 48: import org.omg.CORBA.portable.OutputStream; 49: import org.omg.CORBA.portable.Streamable; 50: 51: import java.io.IOException; 52: 53: /** 54: * This class holds the abstract binary data array of the Streamable 55: * being stored. It is used to insert and extract into {@link Any} objects 56: * that have no holder, but have the helper classes. 57: * Encoding/decoding then must be performed by the helper. This class is 58: * defined as package private because it is not idiot proof and 59: * must be used with care. 60: * 61: * @author Audrius Meskauskas, Lithuania (AudriusA@Bioinformatics.org) 62: */ 63: public class GeneralHolder 64: implements Streamable 65: { 66: /** 67: * The binary data, stored inside this holder. 68: */ 69: private BufferedCdrOutput value = new BufferedCdrOutput(); 70: 71: /** 72: * Create the universal holder that uses the given buffer to store the data. 73: */ 74: public GeneralHolder(BufferedCdrOutput buffer) 75: { 76: value = buffer; 77: } 78: 79: /** 80: * Reads into the internal buffer till the end of stream is 81: * reached. No alignment operations are performed. This operation 82: * normally reads from the stream, where the single value, 83: * stored using {@link #_write}, is written. 84: * 85: * @throws MARSHALL, if the IOException is thrown during the 86: * stream operation. 87: */ 88: public void _read(InputStream input) 89: { 90: try 91: { 92: if (input instanceof BufferredCdrInput) 93: { 94: BufferredCdrInput b = (BufferredCdrInput) input; 95: value.write(b.buffer.getBuffer()); 96: } 97: else 98: { 99: int c; 100: 101: do 102: { 103: c = input.read(); 104: if (c >= 0) 105: value.write(c); 106: } 107: while (c >= 0); 108: } 109: } 110: catch (IOException ex) 111: { 112: MARSHAL t = new MARSHAL(); 113: t.minor = Minor.Any; 114: t.initCause(ex); 115: throw t; 116: } 117: } 118: 119: /** 120: * The type is not known and cannot be returned. 121: * 122: * @throws BAD_OPERATION, always. 123: */ 124: public TypeCode _type() 125: { 126: BAD_OPERATION bad = new BAD_OPERATION(); 127: bad.minor = Minor.Inappropriate; 128: throw bad; 129: } 130: 131: /** 132: * Writes the binary data being stored into the given output 133: * stream. This operation supposes that the current stream 134: * position is 0 or satisfies the required alignments anyway. 135: * 136: * @throws MARSHAL if the IOExeption is thrown when writing the 137: * byte array. 138: */ 139: public void _write(OutputStream output) 140: { 141: try 142: { 143: value.buffer.writeTo(output); 144: } 145: catch (IOException ex) 146: { 147: MARSHAL t = new MARSHAL(); 148: t.minor = Minor.Any; 149: t.initCause(ex); 150: throw t; 151: } 152: } 153: 154: /** 155: * Get the input stream that reads the fields of the stored value. 156: */ 157: InputStream getInputStream() 158: { 159: return value.create_input_stream(); 160: } 161: 162: /** 163: * Clone. 164: */ 165: public GeneralHolder Clone() 166: { 167: try 168: { 169: BufferedCdrOutput nb = new BufferedCdrOutput(value.buffer.size()); 170: value.buffer.writeTo(nb); 171: return new GeneralHolder(nb); 172: } 173: catch (IOException ex) 174: { 175: throw new Unexpected(ex); 176: } 177: } 178: }