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The core JMS Client implementation
/*
* 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.jms.message;
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 org.apache.qpid.jms.message.facade.JmsMapMessageFacade;
/**
* Implementation of the JMS MapMessage.
*/
@SuppressWarnings("unchecked")
public class JmsMapMessage extends JmsMessage implements MapMessage {
JmsMapMessageFacade facade;
public JmsMapMessage(JmsMapMessageFacade facade) {
super(facade);
this.facade = facade;
}
@Override
public JmsMapMessage copy() throws JMSException {
JmsMapMessage other = new JmsMapMessage(facade.copy());
other.copy(this);
return other;
}
@Override
public void clearBody() throws JMSException {
super.clearBody();
facade.clearBody();
}
@Override
public boolean getBoolean(String name) throws JMSException {
Object value = getObject(name);
if (value instanceof Boolean) {
return ((Boolean) value).booleanValue();
} else if (value instanceof String || value == null) {
return Boolean.valueOf((String) value).booleanValue();
} else {
throw new MessageFormatException("Cannot read a boolean from " + value.getClass().getSimpleName());
}
}
@Override
public byte getByte(String name) throws JMSException {
Object value = getObject(name);
if (value instanceof Byte) {
return ((Byte) value).byteValue();
} else if (value instanceof String || value == null) {
return Byte.valueOf((String) value).byteValue();
} else {
throw new MessageFormatException("Cannot read a byte from " + value.getClass().getSimpleName());
}
}
@Override
public short getShort(String name) throws JMSException {
Object value = getObject(name);
if (value instanceof Short) {
return ((Short) value).shortValue();
} else if (value instanceof Byte) {
return ((Byte) value).shortValue();
} else if (value instanceof String || value == null) {
return Short.valueOf((String) value).shortValue();
} else {
throw new MessageFormatException("Cannot read a short from " + value.getClass().getSimpleName());
}
}
@Override
public char getChar(String name) throws JMSException {
Object value = getObject(name);
if (value == null) {
throw new NullPointerException();
} else if (value instanceof Character) {
return ((Character) value).charValue();
} else {
throw new MessageFormatException("Cannot read a char from " + value.getClass().getSimpleName());
}
}
@Override
public int getInt(String name) throws JMSException {
Object value = getObject(name);
if (value instanceof Integer) {
return ((Integer) value).intValue();
} else if (value instanceof Short) {
return ((Short) value).intValue();
} else if (value instanceof Byte) {
return ((Byte) value).intValue();
} else if (value instanceof String || value == null) {
return Integer.valueOf((String) value).intValue();
} else {
throw new MessageFormatException("Cannot read an int from " + value.getClass().getSimpleName());
}
}
@Override
public long getLong(String name) throws JMSException {
Object value = getObject(name);
if (value instanceof Long) {
return ((Long) value).longValue();
} else if (value instanceof Integer) {
return ((Integer) value).longValue();
} else if (value instanceof Short) {
return ((Short) value).longValue();
} else if (value instanceof Byte) {
return ((Byte) value).longValue();
} else if (value instanceof String || value == null) {
return Long.valueOf((String) value).longValue();
} else {
throw new MessageFormatException("Cannot read a long from " + value.getClass().getSimpleName());
}
}
@Override
public float getFloat(String name) throws JMSException {
Object value = getObject(name);
if (value instanceof Float) {
return ((Float) value).floatValue();
} else if (value instanceof String || value == null) {
return Float.valueOf((String) value).floatValue();
} else {
throw new MessageFormatException("Cannot read a float from " + value.getClass().getSimpleName());
}
}
@Override
public double getDouble(String name) throws JMSException {
Object value = getObject(name);
if (value instanceof Double) {
return ((Double) value).doubleValue();
} else if (value instanceof Float) {
return ((Float) value).floatValue();
} else if (value instanceof String || value == null) {
return Double.valueOf((String) value).doubleValue();
} else {
throw new MessageFormatException("Cannot read a double from " + value.getClass().getSimpleName());
}
}
@Override
public String getString(String name) throws JMSException {
Object value = getObject(name);
if (value == null) {
return null;
} else if (value instanceof byte[]) {
throw new MessageFormatException("Use getBytes to read a byte array");
} else {
return value.toString();
}
}
@Override
public byte[] getBytes(String name) throws JMSException {
Object value = getObject(name);
if (value == null) {
return null;
} else if (value instanceof byte[]) {
byte[] original = (byte[]) value;
byte[] clone = new byte[original.length];
System.arraycopy(original, 0, clone, 0, original.length);
return clone;
} else {
throw new MessageFormatException("Cannot read a byte[] from " + value.getClass().getSimpleName());
}
}
@Override
public Object getObject(String name) throws JMSException {
checkKeyNameIsValid(name);
return facade.get(name);
}
@Override
public Enumeration getMapNames() throws JMSException {
return facade.getMapNames();
}
@Override
public void setBoolean(String name, boolean value) throws JMSException {
put(name, value ? Boolean.TRUE : Boolean.FALSE);
}
@Override
public void setByte(String name, byte value) throws JMSException {
put(name, Byte.valueOf(value));
}
@Override
public void setShort(String name, short value) throws JMSException {
put(name, Short.valueOf(value));
}
@Override
public void setChar(String name, char value) throws JMSException {
put(name, Character.valueOf(value));
}
@Override
public void setInt(String name, int value) throws JMSException {
put(name, Integer.valueOf(value));
}
@Override
public void setLong(String name, long value) throws JMSException {
put(name, Long.valueOf(value));
}
@Override
public void setFloat(String name, float value) throws JMSException {
checkReadOnlyBody();
put(name, Float.valueOf(value));
}
@Override
public void setDouble(String name, double value) throws JMSException {
put(name, Double.valueOf(value));
}
@Override
public void setString(String name, String value) throws JMSException {
put(name, value);
}
@Override
public void setBytes(String name, byte[] value) throws JMSException {
setBytes(name, value, 0, (value != null ? value.length : 0));
}
@Override
public void setBytes(String name, byte[] value, int offset, int length) throws JMSException {
// Fail early to avoid unnecessary array copy.
checkReadOnlyBody();
checkKeyNameIsValid(name);
byte[] clone = null;
if (value != null) {
clone = new byte[length];
System.arraycopy(value, offset, clone, 0, length);
}
put(name, clone);
}
@Override
public void setObject(String name, Object value) throws JMSException {
checkValidObject(value);
put(name, value);
}
/**
* Indicates whether an item exists in this MapMessage object.
*
* @param name
* the name of the item to test
* @return true if the item exists
* @throws JMSException
* if the JMS provider fails to determine if the item exists due to
* some internal error.
*/
@Override
public boolean itemExists(String name) throws JMSException {
return facade.itemExists(name);
}
@Override
public String toString() {
return "JmsMapMessage { " + facade + " }";
}
@Override
public boolean isBodyAssignableTo(@SuppressWarnings("rawtypes") Class target) throws JMSException {
return facade.hasBody() ? target.isAssignableFrom(Map.class) : true;
}
@Override
protected T doGetBody(Class asType) throws JMSException {
if (!facade.hasBody()) {
return null;
}
Map copy = new HashMap();
Enumeration keys = facade.getMapNames();
while (keys.hasMoreElements()) {
String key = keys.nextElement();
copy.put(key, getObject(key));
}
return (T) copy;
}
private void put(String name, Object value) throws JMSException {
checkReadOnlyBody();
checkKeyNameIsValid(name);
facade.put(name, value);
}
private void checkKeyNameIsValid(String name) throws IllegalArgumentException {
if (name == null) {
throw new IllegalArgumentException("Map key name must not be null");
} else if (name.length() == 0) {
throw new IllegalArgumentException("Map key name must not be the empty string");
}
}
private void checkValidObject(Object value) throws MessageFormatException {
boolean valid = value instanceof Boolean ||
value instanceof Byte ||
value instanceof Short ||
value instanceof Integer ||
value instanceof Long ||
value instanceof Float ||
value instanceof Double ||
value instanceof Character ||
value instanceof String ||
value instanceof byte[] ||
value == null;
if (!valid) {
throw new MessageFormatException("Only objectified primitive objects and String types are allowed but was: " + value + " type: " + value.getClass());
}
}
}
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