/*
* Copyright (c) MuleSoft, Inc. All rights reserved. http://www.mulesoft.com
* The software in this package is published under the terms of the CPAL v1.0
* license, a copy of which has been included with this distribution in the
* LICENSE.txt file.
*/
package org.mule.el.function;
import org.mule.api.el.ExpressionLanguageContext;
import org.mule.api.el.ExpressionLanguageFunction;
import org.mule.api.expression.ExpressionRuntimeException;
import org.mule.config.i18n.CoreMessages;
import org.mule.el.datetime.DateTime;
import java.text.ParseException;
import java.util.Calendar;
import java.util.Date;
import javax.xml.datatype.XMLGregorianCalendar;
public class DateTimeExpressionLanguageFuntion implements ExpressionLanguageFunction
{
@Override
public Object call(Object[] params, ExpressionLanguageContext context)
{
int numParams = params.length;
if (numParams < 1 || numParams > 3)
{
throw new IllegalArgumentException("invalid number of arguments");
}
if (numParams == 1)
{
Object dateParam = params[0];
if (dateParam instanceof Date)
{
return new DateTime((Date) dateParam);
}
else if (dateParam instanceof Calendar)
{
return new DateTime((Calendar) dateParam);
}
else if (dateParam instanceof XMLGregorianCalendar)
{
return new DateTime((XMLGregorianCalendar) dateParam);
}
else
{
try
{
return new DateTime(dateParam.toString());
}
catch (RuntimeException e)
{
throw new ExpressionRuntimeException(
CoreMessages.createStaticMessage("Unable to parse string as a ISO-8601 date"), e);
}
}
}
else
{
try
{
return new DateTime((String) params[0], (String) params[1]);
}
catch (ParseException e)
{
throw new ExpressionRuntimeException(
CoreMessages.createStaticMessage("Unable to parse string as a date using format '"
+ params[1] + "''"));
}
}
}
}