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com.rabbitmq.jms.client.message.RMQMapMessage Maven / Gradle / Ivy
/* Copyright (c) 2013 Pivotal Software, Inc. All rights reserved. */
package com.rabbitmq.jms.client.message;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.ObjectInput;
import java.io.ObjectOutput;
import java.io.Serializable;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.Map;
import javax.jms.JMSException;
import javax.jms.MapMessage;
import javax.jms.MessageFormatException;
import javax.jms.MessageNotWriteableException;
import com.rabbitmq.jms.client.RMQMessage;
import com.rabbitmq.jms.util.DiscardingObjectOutput;
import com.rabbitmq.jms.util.IteratorEnum;
import com.rabbitmq.jms.util.RMQMessageFormatException;
/**
* Implementation of {@link MapMessage} interface.
*/
public class RMQMapMessage extends RMQMessage implements MapMessage {
private Map data = new HashMap();
@Override
public boolean getBoolean(String name) throws JMSException {
Object o = this.data.get(name);
if (o == null)
return false;
else if (o instanceof Boolean)
return (Boolean) o;
else if (o instanceof String)
return Boolean.parseBoolean((String) o);
else
throw new MessageFormatException(String.format(UNABLE_TO_CAST, o, "boolean"));
}
@Override
public byte getByte(String name) throws JMSException {
Object o = this.data.get(name);
if (o == null)
throw new NumberFormatException(String.format(UNABLE_TO_CAST, o, "byte"));
else if (o instanceof Byte)
return (Byte) o;
else if (o instanceof String)
return Byte.parseByte((String) o);
else
throw new MessageFormatException(String.format(UNABLE_TO_CAST, o, "byte"));
}
@Override
public short getShort(String name) throws JMSException {
Object o = this.data.get(name);
if (o == null)
throw new NumberFormatException(String.format(UNABLE_TO_CAST, o, "short"));
else if (o instanceof Byte)
return (Byte) o;
else if (o instanceof Short)
return (Short) o;
else if (o instanceof String)
return Short.parseShort((String) o);
else
throw new MessageFormatException(String.format(UNABLE_TO_CAST, o, "short"));
}
@Override
public char getChar(String name) throws JMSException {
Object o = this.data.get(name);
if (o == null)
throw new NumberFormatException(String.format(UNABLE_TO_CAST, o, "char"));
else if (o instanceof Character)
return (Character) o;
else
throw new MessageFormatException(String.format(UNABLE_TO_CAST, o, "char"));
}
@Override
public int getInt(String name) throws JMSException {
Object o = this.data.get(name);
if (o == null)
throw new NumberFormatException(String.format(UNABLE_TO_CAST, o, "int"));
else if (o instanceof Byte)
return (Byte) o;
else if (o instanceof Short)
return (Short) o;
else if (o instanceof Integer)
return (Integer) o;
else if (o instanceof String)
return Integer.parseInt((String) o);
else
throw new MessageFormatException(String.format(UNABLE_TO_CAST, o, "int"));
}
@Override
public long getLong(String name) throws JMSException {
Object o = this.data.get(name);
if (o == null)
throw new NumberFormatException(String.format(UNABLE_TO_CAST, o, "long"));
else if (o instanceof Byte)
return (Byte) o;
else if (o instanceof Short)
return (Short) o;
else if (o instanceof Integer)
return (Integer) o;
else if (o instanceof Long)
return (Long) o;
else if (o instanceof String)
return Long.parseLong((String) o);
else
throw new MessageFormatException(String.format(UNABLE_TO_CAST, o, "long"));
}
@Override
public float getFloat(String name) throws JMSException {
Object o = this.data.get(name);
if (o == null)
throw new NumberFormatException(String.format(UNABLE_TO_CAST, o, "float"));
else if (o instanceof Float) {
return (Float) o;
} else if (o instanceof String)
return Float.parseFloat((String) o);
else
throw new MessageFormatException(String.format(UNABLE_TO_CAST, o, "float"));
}
@Override
public double getDouble(String name) throws JMSException {
Object o = this.data.get(name);
if (o == null)
throw new NumberFormatException(String.format(UNABLE_TO_CAST, o, "double"));
else if (o instanceof Float)
return (Float) o;
else if (o instanceof Double) {
return (Double) o;
} else if (o instanceof String)
return Double.parseDouble((String) o);
else
throw new MessageFormatException(String.format(UNABLE_TO_CAST, o, "double"));
}
@Override
public String getString(String name) throws JMSException {
Object o = this.data.get(name);
if (o == null)
return null;
else if (o instanceof String)
return ((String) o);
else if (o instanceof byte[])
throw new MessageFormatException(String.format(UNABLE_TO_CAST, o, "String"));
else
return o.toString();
}
@Override
public byte[] getBytes(String name) throws JMSException {
Object o = this.data.get(name);
if (o == null) {
return null;
} else if (o instanceof byte[]) {
byte[] b1 = ((byte[]) o);
byte[] b2 = new byte[b1.length];
System.arraycopy(b1, 0, b2, 0, b1.length);
return b2;
} else
throw new MessageFormatException(String.format(UNABLE_TO_CAST, o, "byte[]"));
}
@Override
public Object getObject(String name) throws JMSException {
Object o = this.data.get(name);
if (o == null) {
return null;
} else if (o instanceof byte[]) {
return getBytes(name);
} else {
return o;
}
}
@Override
public Enumeration getMapNames() throws JMSException {
return new IteratorEnum(this.data.keySet().iterator());
}
@Override
public void setBoolean(String name, boolean value) throws JMSException {
checkNotReadonlyBody();
this.data.put(name, value);
}
@Override
public void setByte(String name, byte value) throws JMSException {
checkNotReadonlyBody();
this.data.put(name, value);
}
@Override
public void setShort(String name, short value) throws JMSException {
checkNotReadonlyBody();
this.data.put(name, value);
}
@Override
public void setChar(String name, char value) throws JMSException {
checkNotReadonlyBody();
this.data.put(name, value);
}
@Override
public void setInt(String name, int value) throws JMSException {
checkNotReadonlyBody();
this.data.put(name, value);
}
@Override
public void setLong(String name, long value) throws JMSException {
checkNotReadonlyBody();
this.data.put(name, value);
}
@Override
public void setFloat(String name, float value) throws JMSException {
checkNotReadonlyBody();
this.data.put(name, value);
}
@Override
public void setDouble(String name, double value) throws JMSException {
checkNotReadonlyBody();
this.data.put(name, value);
}
@Override
public void setString(String name, String value) throws JMSException {
checkNotReadonlyBody();
this.data.put(name, value);
}
@Override
public void setBytes(String name, byte[] value) throws JMSException {
checkNotReadonlyBody();
setBytes(name, value, 0, value.length);
}
@Override
public void setBytes(String name, byte[] value, int offset, int length) throws JMSException {
checkNotReadonlyBody();
if (value == null) {
this.data.remove(name);
return;
}
byte[] buf = new byte[length];
System.arraycopy(value, offset, buf, 0, length);
this.data.put(name, buf);
}
@Override
public void setObject(String name, Object value) throws JMSException {
checkNotReadonlyBody();
if (name == null && value == null) {
} else if (value == null) {
this.data.remove(name);
} else if (!(value instanceof Serializable)) {
throw new MessageFormatException(String.format(UNABLE_TO_CAST, value, Serializable.class.getName()));
} else {
try {
/* Make sure we can write this type of object */
writePrimitiveData(value, new DiscardingObjectOutput(), false);
} catch (IOException x) {
throw new RMQMessageFormatException(x);
}
}
if (value instanceof byte[]) {
setBytes(name, (byte[])value);
} else {
this.data.put(name, (Serializable) value);
}
}
@Override
public boolean itemExists(String name) throws JMSException {
return this.data.containsKey(name);
}
@Override
public void clearBodyInternal() throws JMSException {
this.data.clear();
}
@Override
protected void writeBody(ObjectOutput out, ByteArrayOutputStream bout) throws IOException {
int size = this.data.size();
out.writeInt(size);
for (Map.Entry entry : this.data.entrySet()) {
out.writeUTF(entry.getKey());
try {
RMQMessage.writePrimitive(entry.getValue(), out);
} catch (MessageFormatException x) {
throw new IOException(x);
}
}
}
@Override
protected void readBody(ObjectInput inputStream, ByteArrayInputStream bin) throws IOException, ClassNotFoundException {
int size = inputStream.readInt();
for (int i = 0; i < size; i++) {
String name = inputStream.readUTF();
Object value = RMQMessage.readPrimitive(inputStream);
this.data.put(name, (Serializable) value);
}
}
@Override
protected void readAmqpBody(byte[] barr) {
throw new UnsupportedOperationException();
}
/**
* Utility method to write an object as a primitive or as an object
* @param s the object to write
* @param out the stream to write it to
* @param allowSerializable true if we allow objects other than serializable
* @throws IOException
* @throws NullPointerException if s is null
*/
private void writePrimitiveData(Object s, ObjectOutput out, boolean allowSerializable) throws IOException, MessageFormatException {
if(s==null) {
throw new NullPointerException();
} else if (s instanceof Boolean) {
out.writeBoolean((Boolean) s);
} else if (s instanceof Byte) {
out.writeByte((Byte) s);
} else if (s instanceof Short) {
out.writeShort(((Short) s));
} else if (s instanceof Integer) {
out.writeInt((Integer) s);
} else if (s instanceof Long) {
out.writeLong((Long) s);
} else if (s instanceof Float) {
out.writeFloat((Float) s);
} else if (s instanceof Double) {
out.writeDouble((Double) s);
} else if (s instanceof String) {
out.writeUTF((String) s);
} else if (s instanceof Character) {
out.writeChar((Character) s);
} else if (allowSerializable && s instanceof Serializable) {
out.writeObject(s);
} else if (s instanceof byte[]) {
out.write((byte[])s);
} else
throw new MessageFormatException(s + " is not a recognized primitive type.");
}
private void checkNotReadonlyBody() throws JMSException {
if (isReadonlyBody())
throw new MessageNotWriteableException("Message not writeable");
}
@Override
protected void writeAmqpBody(ByteArrayOutputStream out) throws IOException {
throw new UnsupportedOperationException();
}
public static RMQMessage recreate(MapMessage msg) throws JMSException {
RMQMapMessage rmqMMsg = new RMQMapMessage();
RMQMessage.copyAttributes(rmqMMsg, msg);
copyMapObjects(rmqMMsg, msg);
return rmqMMsg;
}
private static void copyMapObjects(RMQMapMessage rmqMsg, MapMessage msg) throws JMSException {
@SuppressWarnings("unchecked")
Enumeration mapNames = (Enumeration) msg.getMapNames();
while (mapNames.hasMoreElements()) {
String name = mapNames.nextElement();
rmqMsg.setObject(name, msg.getObject(name));
}
}
}
