/*
* eXist Open Source Native XML Database
* Copyright (C) 2008-2010 The eXist Project
* http://exist-db.org
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program 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. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* $Id$
*/
package org.exist.xslt.functions;
import org.exist.dom.QName;
import org.exist.xquery.BasicFunction;
import org.exist.xquery.Cardinality;
import org.exist.xquery.FunctionSignature;
import org.exist.xquery.XPathException;
import org.exist.xquery.XQueryContext;
import org.exist.xquery.value.Sequence;
import org.exist.xquery.value.SequenceType;
import org.exist.xquery.value.Type;
import org.exist.xquery.value.TimeValue;
import org.exist.xquery.value.StringValue;
import java.text.SimpleDateFormat;
import java.util.Locale;
/**
* format-time( $value as xs:time?, $picture as xs:string,
* $language as xs:string?, $calendar as xs:string?,
* $country as xs:string?) as xs:string?
*
* format-time($value as xs:time?, $picture as xs:string) as xs:string?
*
* @author <a href="mailto:shabanovd@gmail.com">Dmitriy Shabanov</a>
*
*/
public class Format_time extends BasicFunction {
public final static FunctionSignature signatures[] = {
new FunctionSignature(
new QName("format-time", XSLModule.NAMESPACE_URI, XSLModule.PREFIX),
FormatFunctionConstants.TIME_FUNCTION_DESCRIPTION,
new SequenceType[] { FormatFunctionConstants.TIME_PARAMETER, FormatFunctionConstants.PICTURE_PARAMETER, FormatFunctionConstants.LANGUAGE_PARAMETER, FormatFunctionConstants.CALENDAR_PARAMETER, FormatFunctionConstants.COUNTRY_PARAMETER},
FormatFunctionConstants.RETURN_TYPE
),
new FunctionSignature(
new QName("format-time", XSLModule.NAMESPACE_URI, XSLModule.PREFIX),
FormatFunctionConstants.TIME_FUNCTION_DESCRIPTION,
new SequenceType[] { FormatFunctionConstants.TIME_PARAMETER, FormatFunctionConstants.PICTURE_PARAMETER},
FormatFunctionConstants.RETURN_TYPE
)
};
/**
* @param context
*/
public Format_time(XQueryContext context, FunctionSignature signature) {
super(context, signature);
}
@Override
public Sequence eval(Sequence[] args, Sequence contextSequence)
throws XPathException {
if (args[0].isEmpty())
return Sequence.EMPTY_SEQUENCE;
try {
TimeValue value = (TimeValue)args[0].itemAt(0);
String picture = FormatFunctionConstants.translate(args[1].itemAt(0).getStringValue());
String language = (args.length <= 2 || args[2].isEmpty()) ? null : args[2].itemAt(0).getStringValue();
String calendar = (args.length <= 2 || args[3].isEmpty()) ? null : args[3].itemAt(0).getStringValue();
String country = (args.length <= 2 || args[4].isEmpty()) ? null : args[4].itemAt(0).getStringValue();
SimpleDateFormat format = null;
if (language != null || country != null) {
Locale locale = (country == null) ? new Locale(language) : new Locale(language, country);
format = new SimpleDateFormat(picture, locale);
} else {
format = new SimpleDateFormat(picture);
}
return new StringValue(format.format(value.toJavaObject(java.util.Date.class)));
} catch (java.lang.IllegalArgumentException e) {
throw new XPathException(e.getMessage());
}
}
}