/*
* Copyright (c) 1998-2011 Caucho Technology -- all rights reserved
*
* This file is part of Resin(R) Open Source
*
* Each copy or derived work must preserve the copyright notice and this
* notice unmodified.
*
* Resin Open Source is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* Resin Open Source is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
* of NON-INFRINGEMENT. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with Resin Open Source; if not, write to the
*
* Free Software Foundation, Inc.
* 59 Temple Place, Suite 330
* Boston, MA 02111-1307 USA
*
* @author Scott Ferguson
*/
package com.caucho.jms.message;
import com.caucho.util.L10N;
import javax.jms.JMSException;
import javax.jms.MessageFormatException;
import java.util.logging.Logger;
/**
* A basic message.
*/
public class ObjectConverter {
static final Logger log = Logger.getLogger(ObjectConverter.class.getName());
static final L10N L = new L10N(ObjectConverter.class);
/**
* Returns an object converted to a boolean.
*/
public static boolean toBoolean(Object obj)
throws JMSException
{
if (obj == null) {
// jms/214c
throw new NullPointerException();
} else if (obj instanceof Boolean)
return ((Boolean) obj).booleanValue();
else if (obj instanceof String)
return Boolean.valueOf((String) obj).booleanValue();
else
throw new MessageFormatException(L.l("can't convert '{0}' to boolean",
obj.getClass().getName()));
}
/**
* Returns a property as a byte
*/
public static byte toByte(Object obj)
throws JMSException
{
// jms/2252
if (obj instanceof Byte)
return ((Number) obj).byteValue();
else if (obj == null || obj instanceof String)
return (byte) Long.parseLong((String) obj);
else
throw new MessageFormatException(L.l("can't convert '{0}' to byte",
obj.getClass().getName()));
}
/**
* Returns a property as a short
*/
public static short toShort(Object obj)
throws JMSException
{
// jms/2252
if (obj instanceof Short || obj instanceof Byte)
return ((Number) obj).shortValue();
else if (obj == null || obj instanceof String)
return (short) Long.parseLong((String) obj);
else
throw new MessageFormatException(L.l("can't convert '{0}' to short",
obj.getClass().getName()));
}
/**
* Returns a property as an integer
*/
public static int toInt(Object obj)
throws JMSException
{
if (obj instanceof Integer
|| obj instanceof Short
|| obj instanceof Byte)
return ((Number) obj).intValue();
else if (obj == null || obj instanceof String)
return (int) Long.parseLong((String) obj);
else
throw new MessageFormatException(L.l("can't convert '{0}' to int",
obj.getClass().getName()));
}
/**
* Returns a property as a long
*/
public static long toLong(Object obj)
throws JMSException
{
if (obj instanceof Long
|| obj instanceof Integer
|| obj instanceof Short
|| obj instanceof Byte)
return ((Number) obj).longValue();
else if (obj == null || obj instanceof String)
return Long.parseLong((String) obj);
else
throw new MessageFormatException(L.l("can't convert '{0}' to long",
obj.getClass().getName()));
}
/**
* Returns a property as a float
*/
public static float toFloat(Object obj)
throws JMSException
{
if (obj == null || obj instanceof Float)
return ((Number) obj).floatValue();
else if (obj == null || obj instanceof String)
return (float) Double.parseDouble((String) obj);
else
throw new MessageFormatException(L.l("can't convert '{0}' to float",
obj.getClass().getName()));
}
/**
* Returns a property as a double
*/
public static double toDouble(Object obj)
throws JMSException
{
if (obj == null || obj instanceof Float || obj instanceof Double)
return ((Number) obj).doubleValue();
else if (obj == null || obj instanceof String)
return Double.parseDouble((String) obj);
else
throw new MessageFormatException(L.l("can't convert '{0}' to double",
obj.getClass().getName()));
}
/**
* Returns a property as a string
*/
public static String toString(Object obj)
throws JMSException
{
if (obj == null)
return null;
else if (! (obj instanceof byte[]))
return obj.toString();
else
throw new MessageFormatException(L.l("can't convert '{0}' to String",
obj.getClass().getName()));
}
/**
* Returns a property as a char
*/
public static char toChar(Object obj)
throws JMSException
{
if (obj == null)
throw new NullPointerException();
else if (obj instanceof Character)
return ((Character) obj).charValue();
else if (obj instanceof String) {
String s = (String) obj;
if (s.length() != 1)
throw new MessageFormatException(L.l("bad property {0}", obj));
return s.charAt(0);
}
else
throw new MessageFormatException(L.l("bad property {0}", obj));
}
/**
* Returns a property as a byte[]
*/
public static byte []toBytes(Object obj)
throws JMSException
{
if (obj == null)
return null;
else if (obj instanceof byte[]) {
byte []bytes = (byte []) obj;
byte []newBytes = new byte[bytes.length];
System.arraycopy(bytes, 0, newBytes, 0, bytes.length);
return newBytes;
}
/*
else if (obj instanceof String) {
String string = toString(obj);
try {
return string.getBytes("UTF-8");
} catch (Exception e) {
throw new MessageFormatException(e.toString());
}
}
*/
else
throw new MessageFormatException(L.l("can't convert {0} to byte[]",
obj.getClass().getName()));
}
}