| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| * |
| * |
| */ |
| |
| package org.apache.qpid.client.message; |
| |
| import java.nio.charset.CharacterCodingException; |
| import java.nio.charset.Charset; |
| |
| import javax.jms.JMSException; |
| import javax.jms.MessageEOFException; |
| import javax.jms.MessageFormatException; |
| import javax.jms.MessageNotReadableException; |
| import javax.jms.MessageNotWriteableException; |
| |
| import org.apache.mina.common.ByteBuffer; |
| import org.apache.qpid.AMQException; |
| import org.apache.qpid.framing.AMQShortString; |
| import org.apache.qpid.framing.BasicContentHeaderProperties; |
| |
| /** |
| * @author Apache Software Foundation |
| */ |
| public abstract class AbstractBytesTypedMessage extends AbstractBytesMessage |
| { |
| |
| protected static final byte BOOLEAN_TYPE = (byte) 1; |
| |
| protected static final byte BYTE_TYPE = (byte) 2; |
| |
| protected static final byte BYTEARRAY_TYPE = (byte) 3; |
| |
| protected static final byte SHORT_TYPE = (byte) 4; |
| |
| protected static final byte CHAR_TYPE = (byte) 5; |
| |
| protected static final byte INT_TYPE = (byte) 6; |
| |
| protected static final byte LONG_TYPE = (byte) 7; |
| |
| protected static final byte FLOAT_TYPE = (byte) 8; |
| |
| protected static final byte DOUBLE_TYPE = (byte) 9; |
| |
| protected static final byte STRING_TYPE = (byte) 10; |
| |
| protected static final byte NULL_STRING_TYPE = (byte) 11; |
| |
| /** |
| * This is set when reading a byte array. The readBytes(byte[]) method supports multiple calls to read |
| * a byte array in multiple chunks, hence this is used to track how much is left to be read |
| */ |
| private int _byteArrayRemaining = -1; |
| |
| AbstractBytesTypedMessage(AMQMessageDelegateFactory delegateFactory) |
| { |
| |
| this(delegateFactory, null); |
| } |
| |
| /** |
| * Construct a stream message with existing data. |
| * |
| * @param delegateFactory |
| * @param data the data that comprises this message. If data is null, you get a 1024 byte buffer that is |
| */ |
| AbstractBytesTypedMessage(AMQMessageDelegateFactory delegateFactory, ByteBuffer data) |
| { |
| |
| super(delegateFactory, data); // this instanties a content header |
| } |
| |
| AbstractBytesTypedMessage(AMQMessageDelegate delegate, ByteBuffer data) throws AMQException |
| { |
| |
| super(delegate, data); |
| } |
| |
| |
| protected byte readWireType() throws MessageFormatException, MessageEOFException, |
| MessageNotReadableException |
| { |
| checkReadable(); |
| checkAvailable(1); |
| return _data.get(); |
| } |
| |
| protected void writeTypeDiscriminator(byte type) throws MessageNotWriteableException |
| { |
| checkWritable(); |
| _data.put(type); |
| _changedData = true; |
| } |
| |
| protected boolean readBoolean() throws JMSException |
| { |
| int position = _data.position(); |
| byte wireType = readWireType(); |
| boolean result; |
| try |
| { |
| switch (wireType) |
| { |
| case BOOLEAN_TYPE: |
| checkAvailable(1); |
| result = readBooleanImpl(); |
| break; |
| case STRING_TYPE: |
| checkAvailable(1); |
| result = Boolean.parseBoolean(readStringImpl()); |
| break; |
| default: |
| _data.position(position); |
| throw new MessageFormatException("Unable to convert " + wireType + " to a boolean"); |
| } |
| return result; |
| } |
| catch (RuntimeException e) |
| { |
| _data.position(position); |
| throw e; |
| } |
| } |
| |
| private boolean readBooleanImpl() |
| { |
| return _data.get() != 0; |
| } |
| |
| protected byte readByte() throws JMSException |
| { |
| int position = _data.position(); |
| byte wireType = readWireType(); |
| byte result; |
| try |
| { |
| switch (wireType) |
| { |
| case BYTE_TYPE: |
| checkAvailable(1); |
| result = readByteImpl(); |
| break; |
| case STRING_TYPE: |
| checkAvailable(1); |
| result = Byte.parseByte(readStringImpl()); |
| break; |
| default: |
| _data.position(position); |
| throw new MessageFormatException("Unable to convert " + wireType + " to a byte"); |
| } |
| } |
| catch (RuntimeException e) |
| { |
| _data.position(position); |
| throw e; |
| } |
| return result; |
| } |
| |
| private byte readByteImpl() |
| { |
| return _data.get(); |
| } |
| |
| protected short readShort() throws JMSException |
| { |
| int position = _data.position(); |
| byte wireType = readWireType(); |
| short result; |
| try |
| { |
| switch (wireType) |
| { |
| case SHORT_TYPE: |
| checkAvailable(2); |
| result = readShortImpl(); |
| break; |
| case STRING_TYPE: |
| checkAvailable(1); |
| result = Short.parseShort(readStringImpl()); |
| break; |
| case BYTE_TYPE: |
| checkAvailable(1); |
| result = readByteImpl(); |
| break; |
| default: |
| _data.position(position); |
| throw new MessageFormatException("Unable to convert " + wireType + " to a short"); |
| } |
| } |
| catch (RuntimeException e) |
| { |
| _data.position(position); |
| throw e; |
| } |
| return result; |
| } |
| |
| private short readShortImpl() |
| { |
| return _data.getShort(); |
| } |
| |
| /** |
| * Note that this method reads a unicode character as two bytes from the stream |
| * |
| * @return the character read from the stream |
| * @throws javax.jms.JMSException |
| */ |
| protected char readChar() throws JMSException |
| { |
| int position = _data.position(); |
| byte wireType = readWireType(); |
| try |
| { |
| if(wireType == NULL_STRING_TYPE){ |
| throw new NullPointerException(); |
| } |
| |
| if (wireType != CHAR_TYPE) |
| { |
| _data.position(position); |
| throw new MessageFormatException("Unable to convert " + wireType + " to a char"); |
| } |
| else |
| { |
| checkAvailable(2); |
| return readCharImpl(); |
| } |
| } |
| catch (RuntimeException e) |
| { |
| _data.position(position); |
| throw e; |
| } |
| } |
| |
| private char readCharImpl() |
| { |
| return _data.getChar(); |
| } |
| |
| protected int readInt() throws JMSException |
| { |
| int position = _data.position(); |
| byte wireType = readWireType(); |
| int result; |
| try |
| { |
| switch (wireType) |
| { |
| case INT_TYPE: |
| checkAvailable(4); |
| result = readIntImpl(); |
| break; |
| case SHORT_TYPE: |
| checkAvailable(2); |
| result = readShortImpl(); |
| break; |
| case STRING_TYPE: |
| checkAvailable(1); |
| result = Integer.parseInt(readStringImpl()); |
| break; |
| case BYTE_TYPE: |
| checkAvailable(1); |
| result = readByteImpl(); |
| break; |
| default: |
| _data.position(position); |
| throw new MessageFormatException("Unable to convert " + wireType + " to an int"); |
| } |
| return result; |
| } |
| catch (RuntimeException e) |
| { |
| _data.position(position); |
| throw e; |
| } |
| } |
| |
| protected int readIntImpl() |
| { |
| return _data.getInt(); |
| } |
| |
| protected long readLong() throws JMSException |
| { |
| int position = _data.position(); |
| byte wireType = readWireType(); |
| long result; |
| try |
| { |
| switch (wireType) |
| { |
| case LONG_TYPE: |
| checkAvailable(8); |
| result = readLongImpl(); |
| break; |
| case INT_TYPE: |
| checkAvailable(4); |
| result = readIntImpl(); |
| break; |
| case SHORT_TYPE: |
| checkAvailable(2); |
| result = readShortImpl(); |
| break; |
| case STRING_TYPE: |
| checkAvailable(1); |
| result = Long.parseLong(readStringImpl()); |
| break; |
| case BYTE_TYPE: |
| checkAvailable(1); |
| result = readByteImpl(); |
| break; |
| default: |
| _data.position(position); |
| throw new MessageFormatException("Unable to convert " + wireType + " to a long"); |
| } |
| return result; |
| } |
| catch (RuntimeException e) |
| { |
| _data.position(position); |
| throw e; |
| } |
| } |
| |
| private long readLongImpl() |
| { |
| return _data.getLong(); |
| } |
| |
| protected float readFloat() throws JMSException |
| { |
| int position = _data.position(); |
| byte wireType = readWireType(); |
| float result; |
| try |
| { |
| switch (wireType) |
| { |
| case FLOAT_TYPE: |
| checkAvailable(4); |
| result = readFloatImpl(); |
| break; |
| case STRING_TYPE: |
| checkAvailable(1); |
| result = Float.parseFloat(readStringImpl()); |
| break; |
| default: |
| _data.position(position); |
| throw new MessageFormatException("Unable to convert " + wireType + " to a float"); |
| } |
| return result; |
| } |
| catch (RuntimeException e) |
| { |
| _data.position(position); |
| throw e; |
| } |
| } |
| |
| private float readFloatImpl() |
| { |
| return _data.getFloat(); |
| } |
| |
| protected double readDouble() throws JMSException |
| { |
| int position = _data.position(); |
| byte wireType = readWireType(); |
| double result; |
| try |
| { |
| switch (wireType) |
| { |
| case DOUBLE_TYPE: |
| checkAvailable(8); |
| result = readDoubleImpl(); |
| break; |
| case FLOAT_TYPE: |
| checkAvailable(4); |
| result = readFloatImpl(); |
| break; |
| case STRING_TYPE: |
| checkAvailable(1); |
| result = Double.parseDouble(readStringImpl()); |
| break; |
| default: |
| _data.position(position); |
| throw new MessageFormatException("Unable to convert " + wireType + " to a double"); |
| } |
| return result; |
| } |
| catch (RuntimeException e) |
| { |
| _data.position(position); |
| throw e; |
| } |
| } |
| |
| private double readDoubleImpl() |
| { |
| return _data.getDouble(); |
| } |
| |
| protected String readString() throws JMSException |
| { |
| int position = _data.position(); |
| byte wireType = readWireType(); |
| String result; |
| try |
| { |
| switch (wireType) |
| { |
| case STRING_TYPE: |
| checkAvailable(1); |
| result = readStringImpl(); |
| break; |
| case NULL_STRING_TYPE: |
| result = null; |
| throw new NullPointerException("data is null"); |
| case BOOLEAN_TYPE: |
| checkAvailable(1); |
| result = String.valueOf(readBooleanImpl()); |
| break; |
| case LONG_TYPE: |
| checkAvailable(8); |
| result = String.valueOf(readLongImpl()); |
| break; |
| case INT_TYPE: |
| checkAvailable(4); |
| result = String.valueOf(readIntImpl()); |
| break; |
| case SHORT_TYPE: |
| checkAvailable(2); |
| result = String.valueOf(readShortImpl()); |
| break; |
| case BYTE_TYPE: |
| checkAvailable(1); |
| result = String.valueOf(readByteImpl()); |
| break; |
| case FLOAT_TYPE: |
| checkAvailable(4); |
| result = String.valueOf(readFloatImpl()); |
| break; |
| case DOUBLE_TYPE: |
| checkAvailable(8); |
| result = String.valueOf(readDoubleImpl()); |
| break; |
| case CHAR_TYPE: |
| checkAvailable(2); |
| result = String.valueOf(readCharImpl()); |
| break; |
| default: |
| _data.position(position); |
| throw new MessageFormatException("Unable to convert " + wireType + " to a String"); |
| } |
| return result; |
| } |
| catch (RuntimeException e) |
| { |
| _data.position(position); |
| throw e; |
| } |
| } |
| |
| protected String readStringImpl() throws JMSException |
| { |
| try |
| { |
| return _data.getString(Charset.forName("UTF-8").newDecoder()); |
| } |
| catch (CharacterCodingException e) |
| { |
| JMSException je = new JMSException("Error decoding byte stream as a UTF8 string: " + e); |
| je.setLinkedException(e); |
| throw je; |
| } |
| } |
| |
| protected int readBytes(byte[] bytes) throws JMSException |
| { |
| if (bytes == null) |
| { |
| throw new IllegalArgumentException("byte array must not be null"); |
| } |
| checkReadable(); |
| // first call |
| if (_byteArrayRemaining == -1) |
| { |
| // type discriminator checked separately so you get a MessageFormatException rather than |
| // an EOF even in the case where both would be applicable |
| checkAvailable(1); |
| byte wireType = readWireType(); |
| if (wireType != BYTEARRAY_TYPE) |
| { |
| throw new MessageFormatException("Unable to convert " + wireType + " to a byte array"); |
| } |
| checkAvailable(4); |
| int size = _data.getInt(); |
| // length of -1 indicates null |
| if (size == -1) |
| { |
| return -1; |
| } |
| else |
| { |
| if (size > _data.remaining()) |
| { |
| throw new MessageEOFException("Byte array has stated length " + size + " but message only contains " + |
| _data.remaining() + " bytes"); |
| } |
| else |
| { |
| _byteArrayRemaining = size; |
| } |
| } |
| } |
| else if (_byteArrayRemaining == 0) |
| { |
| _byteArrayRemaining = -1; |
| return -1; |
| } |
| |
| int returnedSize = readBytesImpl(bytes); |
| if (returnedSize < bytes.length) |
| { |
| _byteArrayRemaining = -1; |
| } |
| return returnedSize; |
| } |
| |
| private int readBytesImpl(byte[] bytes) |
| { |
| int count = (_byteArrayRemaining >= bytes.length ? bytes.length : _byteArrayRemaining); |
| _byteArrayRemaining -= count; |
| |
| if (count == 0) |
| { |
| return 0; |
| } |
| else |
| { |
| _data.get(bytes, 0, count); |
| return count; |
| } |
| } |
| |
| protected Object readObject() throws JMSException |
| { |
| int position = _data.position(); |
| byte wireType = readWireType(); |
| Object result = null; |
| try |
| { |
| switch (wireType) |
| { |
| case BOOLEAN_TYPE: |
| checkAvailable(1); |
| result = readBooleanImpl(); |
| break; |
| case BYTE_TYPE: |
| checkAvailable(1); |
| result = readByteImpl(); |
| break; |
| case BYTEARRAY_TYPE: |
| checkAvailable(4); |
| int size = _data.getInt(); |
| if (size == -1) |
| { |
| result = null; |
| } |
| else |
| { |
| _byteArrayRemaining = size; |
| byte[] bytesResult = new byte[size]; |
| readBytesImpl(bytesResult); |
| result = bytesResult; |
| } |
| break; |
| case SHORT_TYPE: |
| checkAvailable(2); |
| result = readShortImpl(); |
| break; |
| case CHAR_TYPE: |
| checkAvailable(2); |
| result = readCharImpl(); |
| break; |
| case INT_TYPE: |
| checkAvailable(4); |
| result = readIntImpl(); |
| break; |
| case LONG_TYPE: |
| checkAvailable(8); |
| result = readLongImpl(); |
| break; |
| case FLOAT_TYPE: |
| checkAvailable(4); |
| result = readFloatImpl(); |
| break; |
| case DOUBLE_TYPE: |
| checkAvailable(8); |
| result = readDoubleImpl(); |
| break; |
| case NULL_STRING_TYPE: |
| result = null; |
| break; |
| case STRING_TYPE: |
| checkAvailable(1); |
| result = readStringImpl(); |
| break; |
| } |
| return result; |
| } |
| catch (RuntimeException e) |
| { |
| _data.position(position); |
| throw e; |
| } |
| } |
| |
| protected void writeBoolean(boolean b) throws JMSException |
| { |
| writeTypeDiscriminator(BOOLEAN_TYPE); |
| _data.put(b ? (byte) 1 : (byte) 0); |
| } |
| |
| protected void writeByte(byte b) throws JMSException |
| { |
| writeTypeDiscriminator(BYTE_TYPE); |
| _data.put(b); |
| } |
| |
| protected void writeShort(short i) throws JMSException |
| { |
| writeTypeDiscriminator(SHORT_TYPE); |
| _data.putShort(i); |
| } |
| |
| protected void writeChar(char c) throws JMSException |
| { |
| writeTypeDiscriminator(CHAR_TYPE); |
| _data.putChar(c); |
| } |
| |
| protected void writeInt(int i) throws JMSException |
| { |
| writeTypeDiscriminator(INT_TYPE); |
| writeIntImpl(i); |
| } |
| |
| protected void writeIntImpl(int i) |
| { |
| _data.putInt(i); |
| } |
| |
| protected void writeLong(long l) throws JMSException |
| { |
| writeTypeDiscriminator(LONG_TYPE); |
| _data.putLong(l); |
| } |
| |
| protected void writeFloat(float v) throws JMSException |
| { |
| writeTypeDiscriminator(FLOAT_TYPE); |
| _data.putFloat(v); |
| } |
| |
| protected void writeDouble(double v) throws JMSException |
| { |
| writeTypeDiscriminator(DOUBLE_TYPE); |
| _data.putDouble(v); |
| } |
| |
| protected void writeString(String string) throws JMSException |
| { |
| if (string == null) |
| { |
| writeTypeDiscriminator(NULL_STRING_TYPE); |
| } |
| else |
| { |
| writeTypeDiscriminator(STRING_TYPE); |
| try |
| { |
| writeStringImpl(string); |
| } |
| catch (CharacterCodingException e) |
| { |
| JMSException ex = new JMSException("Unable to encode string: " + e); |
| ex.setLinkedException(e); |
| throw ex; |
| } |
| } |
| } |
| |
| protected void writeStringImpl(String string) |
| throws CharacterCodingException |
| { |
| _data.putString(string, Charset.forName("UTF-8").newEncoder()); |
| // we must write the null terminator ourselves |
| _data.put((byte) 0); |
| } |
| |
| protected void writeBytes(byte[] bytes) throws JMSException |
| { |
| writeBytes(bytes, 0, bytes == null ? 0 : bytes.length); |
| } |
| |
| protected void writeBytes(byte[] bytes, int offset, int length) throws JMSException |
| { |
| writeTypeDiscriminator(BYTEARRAY_TYPE); |
| if (bytes == null) |
| { |
| _data.putInt(-1); |
| } |
| else |
| { |
| _data.putInt(length); |
| _data.put(bytes, offset, length); |
| } |
| } |
| |
| protected void writeObject(Object object) throws JMSException |
| { |
| checkWritable(); |
| Class clazz; |
| |
| if (object == null) |
| { |
| // string handles the output of null values |
| clazz = String.class; |
| } |
| else |
| { |
| clazz = object.getClass(); |
| } |
| |
| if (clazz == Byte.class) |
| { |
| writeByte((Byte) object); |
| } |
| else if (clazz == Boolean.class) |
| { |
| writeBoolean((Boolean) object); |
| } |
| else if (clazz == byte[].class) |
| { |
| writeBytes((byte[]) object); |
| } |
| else if (clazz == Short.class) |
| { |
| writeShort((Short) object); |
| } |
| else if (clazz == Character.class) |
| { |
| writeChar((Character) object); |
| } |
| else if (clazz == Integer.class) |
| { |
| writeInt((Integer) object); |
| } |
| else if (clazz == Long.class) |
| { |
| writeLong((Long) object); |
| } |
| else if (clazz == Float.class) |
| { |
| writeFloat((Float) object); |
| } |
| else if (clazz == Double.class) |
| { |
| writeDouble((Double) object); |
| } |
| else if (clazz == String.class) |
| { |
| writeString((String) object); |
| } |
| else |
| { |
| throw new MessageFormatException("Only primitives plus byte arrays and String are valid types"); |
| } |
| } |
| } |