Source Code Cross Referenced for BytesMessageImpl.java in  » Workflow-Engines » Dalma » dalma » endpoints » jms » impl » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Workflow Engines » Dalma » dalma.endpoints.jms.impl 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        package dalma.endpoints.jms.impl;
002:
003:        import javax.jms.BytesMessage;
004:        import javax.jms.JMSException;
005:        import javax.jms.MessageEOFException;
006:        import javax.jms.MessageFormatException;
007:        import javax.jms.Message;
008:        import java.io.DataInputStream;
009:        import java.io.DataOutputStream;
010:        import java.io.EOFException;
011:        import java.io.IOException;
012:        import java.io.Serializable;
013:
014:        /**
015:         * {@link Serializable} {@link BytesMessage}.
016:         *
017:         * @author Kohsuke Kawaguchi
018:         * @ThirdParty this class contains code released under ASL.
019:         */
020:        public class BytesMessageImpl extends MessageImpl<BytesMessage>
021:                implements  BytesMessage {
022:            private DataOutputStream dataOut;
023:            private Buffer buffer;
024:            private DataInputStream dataIn;
025:            private transient long bodyLength = 0;
026:
027:            public BytesMessageImpl() {
028:            }
029:
030:            public BytesMessageImpl wrap(BytesMessage s) throws JMSException {
031:                super .wrap(s);
032:                long len = s.getBodyLength();
033:                if (len > 0) {
034:                    byte[] data = new byte[(int) len];
035:                    s.readBytes(data);
036:                    buffer = new Buffer(data);
037:                }
038:                return this ;
039:            }
040:
041:            public void writeTo(BytesMessage d) throws JMSException {
042:                super .writeTo(d);
043:                if (dataOut != null)
044:                    try {
045:                        dataOut.flush();
046:                    } catch (IOException e) {
047:                        throw new Error(e); // impossible
048:                    }
049:                d.writeBytes(buffer.getBuffer(), 0, buffer.size());
050:            }
051:
052:            public void clearBody() throws JMSException {
053:                this .dataOut = null;
054:                this .dataIn = null;
055:                this .buffer = null;
056:            }
057:
058:            public long getBodyLength() throws JMSException {
059:                preRead();
060:                return bodyLength;
061:            }
062:
063:            public boolean readBoolean() throws JMSException {
064:                preRead();
065:                try {
066:                    return this .dataIn.readBoolean();
067:                } catch (EOFException eof) {
068:                    JMSException jmsEx = new MessageEOFException(eof
069:                            .getMessage());
070:                    jmsEx.setLinkedException(eof);
071:                    throw jmsEx;
072:                } catch (IOException ioe) {
073:                    JMSException jmsEx = new JMSException(
074:                            "Format error occured" + ioe.getMessage());
075:                    jmsEx.setLinkedException(ioe);
076:                    throw jmsEx;
077:                }
078:            }
079:
080:            public byte readByte() throws JMSException {
081:                preRead();
082:                try {
083:                    return this .dataIn.readByte();
084:                } catch (EOFException eof) {
085:                    JMSException jmsEx = new MessageEOFException(eof
086:                            .getMessage());
087:                    jmsEx.setLinkedException(eof);
088:                    throw jmsEx;
089:                } catch (IOException ioe) {
090:                    JMSException jmsEx = new JMSException(
091:                            "Format error occured" + ioe.getMessage());
092:                    jmsEx.setLinkedException(ioe);
093:                    throw jmsEx;
094:                }
095:            }
096:
097:            public int readUnsignedByte() throws JMSException {
098:                preRead();
099:                try {
100:                    return this .dataIn.readUnsignedByte();
101:                } catch (EOFException eof) {
102:                    JMSException jmsEx = new MessageEOFException(eof
103:                            .getMessage());
104:                    jmsEx.setLinkedException(eof);
105:                    throw jmsEx;
106:                } catch (IOException ioe) {
107:                    JMSException jmsEx = new JMSException(
108:                            "Format error occured" + ioe.getMessage());
109:                    jmsEx.setLinkedException(ioe);
110:                    throw jmsEx;
111:                }
112:            }
113:
114:            public short readShort() throws JMSException {
115:                preRead();
116:                try {
117:                    return this .dataIn.readShort();
118:                } catch (EOFException eof) {
119:                    JMSException jmsEx = new MessageEOFException(eof
120:                            .getMessage());
121:                    jmsEx.setLinkedException(eof);
122:                    throw jmsEx;
123:                } catch (IOException ioe) {
124:                    JMSException jmsEx = new JMSException(
125:                            "Format error occured" + ioe.getMessage());
126:                    jmsEx.setLinkedException(ioe);
127:                    throw jmsEx;
128:                }
129:            }
130:
131:            public int readUnsignedShort() throws JMSException {
132:                preRead();
133:                try {
134:                    return this .dataIn.readUnsignedShort();
135:                } catch (EOFException eof) {
136:                    JMSException jmsEx = new MessageEOFException(eof
137:                            .getMessage());
138:                    jmsEx.setLinkedException(eof);
139:                    throw jmsEx;
140:                } catch (IOException ioe) {
141:                    JMSException jmsEx = new JMSException(
142:                            "Format error occured" + ioe.getMessage());
143:                    jmsEx.setLinkedException(ioe);
144:                    throw jmsEx;
145:                }
146:            }
147:
148:            public char readChar() throws JMSException {
149:                preRead();
150:                try {
151:                    return this .dataIn.readChar();
152:                } catch (EOFException eof) {
153:                    JMSException jmsEx = new MessageEOFException(eof
154:                            .getMessage());
155:                    jmsEx.setLinkedException(eof);
156:                    throw jmsEx;
157:                } catch (IOException ioe) {
158:                    JMSException jmsEx = new JMSException(
159:                            "Format error occured" + ioe.getMessage());
160:                    jmsEx.setLinkedException(ioe);
161:                    throw jmsEx;
162:                }
163:            }
164:
165:            public int readInt() throws JMSException {
166:                preRead();
167:                try {
168:                    return this .dataIn.readInt();
169:                } catch (EOFException eof) {
170:                    JMSException jmsEx = new MessageEOFException(eof
171:                            .getMessage());
172:                    jmsEx.setLinkedException(eof);
173:                    throw jmsEx;
174:                } catch (IOException ioe) {
175:                    JMSException jmsEx = new JMSException(
176:                            "Format error occured" + ioe.getMessage());
177:                    jmsEx.setLinkedException(ioe);
178:                    throw jmsEx;
179:                }
180:            }
181:
182:            public long readLong() throws JMSException {
183:                preRead();
184:                try {
185:                    return this .dataIn.readLong();
186:                } catch (EOFException eof) {
187:                    JMSException jmsEx = new MessageEOFException(eof
188:                            .getMessage());
189:                    jmsEx.setLinkedException(eof);
190:                    throw jmsEx;
191:                } catch (IOException ioe) {
192:                    JMSException jmsEx = new JMSException(
193:                            "Format error occured" + ioe.getMessage());
194:                    jmsEx.setLinkedException(ioe);
195:                    throw jmsEx;
196:                }
197:            }
198:
199:            public float readFloat() throws JMSException {
200:                preRead();
201:                try {
202:                    return this .dataIn.readFloat();
203:                } catch (EOFException eof) {
204:                    JMSException jmsEx = new MessageEOFException(eof
205:                            .getMessage());
206:                    jmsEx.setLinkedException(eof);
207:                    throw jmsEx;
208:                } catch (IOException ioe) {
209:                    JMSException jmsEx = new JMSException(
210:                            "Format error occured" + ioe.getMessage());
211:                    jmsEx.setLinkedException(ioe);
212:                    throw jmsEx;
213:                }
214:            }
215:
216:            public double readDouble() throws JMSException {
217:                preRead();
218:                try {
219:                    return this .dataIn.readDouble();
220:                } catch (EOFException eof) {
221:                    JMSException jmsEx = new MessageEOFException(eof
222:                            .getMessage());
223:                    jmsEx.setLinkedException(eof);
224:                    throw jmsEx;
225:                } catch (IOException ioe) {
226:                    JMSException jmsEx = new JMSException(
227:                            "Format error occured" + ioe.getMessage());
228:                    jmsEx.setLinkedException(ioe);
229:                    throw jmsEx;
230:                }
231:            }
232:
233:            public String readUTF() throws JMSException {
234:                preRead();
235:                try {
236:                    return this .dataIn.readUTF();
237:                } catch (EOFException eof) {
238:                    JMSException jmsEx = new MessageEOFException(eof
239:                            .getMessage());
240:                    jmsEx.setLinkedException(eof);
241:                    throw jmsEx;
242:                } catch (IOException ioe) {
243:                    JMSException jmsEx = new JMSException(
244:                            "Format error occured" + ioe.getMessage());
245:                    jmsEx.setLinkedException(ioe);
246:                    throw jmsEx;
247:                }
248:            }
249:
250:            public int readBytes(byte[] value) throws JMSException {
251:                return readBytes(value, value.length);
252:            }
253:
254:            public int readBytes(byte[] value, int length) throws JMSException {
255:                preRead();
256:                try {
257:                    int n = 0;
258:                    while (n < length) {
259:                        int count = this .dataIn.read(value, n, length - n);
260:                        if (count < 0) {
261:                            break;
262:                        }
263:                        n += count;
264:                    }
265:                    if (n == 0 && length > 0) {
266:                        n = -1;
267:                    }
268:                    return n;
269:                } catch (EOFException eof) {
270:                    JMSException jmsEx = new MessageEOFException(eof
271:                            .getMessage());
272:                    jmsEx.setLinkedException(eof);
273:                    throw jmsEx;
274:                } catch (IOException ioe) {
275:                    JMSException jmsEx = new JMSException(
276:                            "Format error occured" + ioe.getMessage());
277:                    jmsEx.setLinkedException(ioe);
278:                    throw jmsEx;
279:                }
280:            }
281:
282:            public void writeBoolean(boolean value) throws JMSException {
283:                preWrite();
284:                try {
285:                    this .dataOut.writeBoolean(value);
286:                } catch (IOException ioe) {
287:                    JMSException jmsEx = new JMSException(
288:                            "Could not write data:" + ioe.getMessage());
289:                    jmsEx.setLinkedException(ioe);
290:                    throw jmsEx;
291:                }
292:            }
293:
294:            public void writeByte(byte value) throws JMSException {
295:                preWrite();
296:                try {
297:                    this .dataOut.writeByte(value);
298:                } catch (IOException ioe) {
299:                    JMSException jmsEx = new JMSException(
300:                            "Could not write data:" + ioe.getMessage());
301:                    jmsEx.setLinkedException(ioe);
302:                    throw jmsEx;
303:                }
304:            }
305:
306:            public void writeShort(short value) throws JMSException {
307:                preWrite();
308:                try {
309:                    this .dataOut.writeShort(value);
310:                } catch (IOException ioe) {
311:                    JMSException jmsEx = new JMSException(
312:                            "Could not write data:" + ioe.getMessage());
313:                    jmsEx.setLinkedException(ioe);
314:                    throw jmsEx;
315:                }
316:            }
317:
318:            public void writeChar(char value) throws JMSException {
319:                preWrite();
320:                try {
321:                    this .dataOut.writeChar(value);
322:                } catch (IOException ioe) {
323:                    JMSException jmsEx = new JMSException(
324:                            "Could not write data:" + ioe.getMessage());
325:                    jmsEx.setLinkedException(ioe);
326:                    throw jmsEx;
327:                }
328:            }
329:
330:            public void writeInt(int value) throws JMSException {
331:                preWrite();
332:                try {
333:                    this .dataOut.writeInt(value);
334:                } catch (IOException ioe) {
335:                    JMSException jmsEx = new JMSException(
336:                            "Could not write data:" + ioe.getMessage());
337:                    jmsEx.setLinkedException(ioe);
338:                    throw jmsEx;
339:                }
340:            }
341:
342:            public void writeLong(long value) throws JMSException {
343:                preWrite();
344:                try {
345:                    this .dataOut.writeLong(value);
346:                } catch (IOException ioe) {
347:                    JMSException jmsEx = new JMSException(
348:                            "Could not write data:" + ioe.getMessage());
349:                    jmsEx.setLinkedException(ioe);
350:                    throw jmsEx;
351:                }
352:            }
353:
354:            public void writeFloat(float value) throws JMSException {
355:                preWrite();
356:                try {
357:                    this .dataOut.writeFloat(value);
358:                } catch (IOException ioe) {
359:                    JMSException jmsEx = new JMSException(
360:                            "Could not write data:" + ioe.getMessage());
361:                    jmsEx.setLinkedException(ioe);
362:                    throw jmsEx;
363:                }
364:            }
365:
366:            public void writeDouble(double value) throws JMSException {
367:                preWrite();
368:                try {
369:                    this .dataOut.writeDouble(value);
370:                } catch (IOException ioe) {
371:                    JMSException jmsEx = new JMSException(
372:                            "Could not write data:" + ioe.getMessage());
373:                    jmsEx.setLinkedException(ioe);
374:                    throw jmsEx;
375:                }
376:            }
377:
378:            public void writeUTF(String value) throws JMSException {
379:                preWrite();
380:                try {
381:                    this .dataOut.writeUTF(value);
382:                } catch (IOException ioe) {
383:                    JMSException jmsEx = new JMSException(
384:                            "Could not write data:" + ioe.getMessage());
385:                    jmsEx.setLinkedException(ioe);
386:                    throw jmsEx;
387:                }
388:            }
389:
390:            public void writeBytes(byte[] value) throws JMSException {
391:                preWrite();
392:                try {
393:                    this .dataOut.write(value);
394:                } catch (IOException ioe) {
395:                    JMSException jmsEx = new JMSException(
396:                            "Could not write data:" + ioe.getMessage());
397:                    jmsEx.setLinkedException(ioe);
398:                    throw jmsEx;
399:                }
400:            }
401:
402:            public void writeBytes(byte[] value, int offset, int length)
403:                    throws JMSException {
404:                preWrite();
405:                try {
406:                    this .dataOut.write(value, offset, length);
407:                } catch (IOException ioe) {
408:                    JMSException jmsEx = new JMSException(
409:                            "Could not write data:" + ioe.getMessage());
410:                    jmsEx.setLinkedException(ioe);
411:                    throw jmsEx;
412:                }
413:            }
414:
415:            public void writeObject(Object value) throws JMSException {
416:                if (value == null) {
417:                    throw new NullPointerException();
418:                }
419:                preWrite();
420:                if (value instanceof  Boolean) {
421:                    writeBoolean((Boolean) value);
422:                } else if (value instanceof  Character) {
423:                    writeChar((Character) value);
424:                } else if (value instanceof  Byte) {
425:                    writeByte((Byte) value);
426:                } else if (value instanceof  Short) {
427:                    writeShort((Short) value);
428:                } else if (value instanceof  Integer) {
429:                    writeInt((Integer) value);
430:                } else if (value instanceof  Double) {
431:                    writeDouble((Double) value);
432:                } else if (value instanceof  Long) {
433:                    writeLong((Long) value);
434:                } else if (value instanceof  Float) {
435:                    writeFloat((Float) value);
436:                } else if (value instanceof  String) {
437:                    writeUTF(value.toString());
438:                } else if (value instanceof  byte[]) {
439:                    writeBytes((byte[]) value);
440:                } else {
441:                    throw new MessageFormatException(
442:                            "Cannot write non-primitive type:"
443:                                    + value.getClass());
444:                }
445:            }
446:
447:            public void reset() throws JMSException {
448:                //        super.readOnlyMessage = true;
449:                if (this .dataOut != null) {
450:                    try {
451:                        this .dataOut.flush();
452:                        dataOut.close();
453:                    } catch (IOException ioe) {
454:                        JMSException jmsEx = new JMSException("reset failed: "
455:                                + ioe.getMessage());
456:                        jmsEx.setLinkedException(ioe);
457:                        throw jmsEx;
458:                    }
459:                }
460:                this .dataIn = null;
461:                this .dataOut = null;
462:            }
463:
464:            private void preWrite() {
465:                //        if (super.readOnlyMessage) {
466:                //            throw new MessageNotWriteableException("This message is in read-only mode");
467:                //        }
468:                if (this .dataOut == null) {
469:                    this .buffer = new Buffer();
470:                    this .dataOut = new DataOutputStream(this .buffer);
471:                }
472:            }
473:
474:            private void preRead() {
475:                //        if (!super.readOnlyMessage) {
476:                //            throw new MessageNotReadableException("This message is in write-only mode");
477:                //        }
478:                if (this .dataIn == null) {
479:                    this .dataIn = new DataInputStream(buffer.newInputStream());
480:                }
481:            }
482:
483:            private static final long serialVersionUID = 1L;
484:        }
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