/*
* eXist Open Source Native XML Database
* Copyright (C) 2007-2009 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* $Id$
*/
package org.exist.xquery.functions.fn;
import org.exist.dom.QName;
import org.exist.xquery.BasicFunction;
import org.exist.xquery.Cardinality;
import org.exist.xquery.Constants;
import org.exist.xquery.Dependency;
import org.exist.xquery.ErrorCodes;
import org.exist.xquery.Function;
import org.exist.xquery.FunctionSignature;
import org.exist.xquery.Profiler;
import org.exist.xquery.XPathException;
import org.exist.xquery.XQueryContext;
import org.exist.xquery.value.DateTimeValue;
import org.exist.xquery.value.DateValue;
import org.exist.xquery.value.DayTimeDurationValue;
import org.exist.xquery.value.FunctionReturnSequenceType;
import org.exist.xquery.value.FunctionParameterSequenceType;
import org.exist.xquery.value.Sequence;
import org.exist.xquery.value.SequenceType;
import org.exist.xquery.value.TimeValue;
import org.exist.xquery.value.Type;
import org.exist.xquery.value.ValueSequence;
/**
*
* @author perig
*
*/
public class FunDateTime extends BasicFunction {
public final static FunctionSignature signature =
new FunctionSignature(
new QName("dateTime", Function.BUILTIN_FUNCTION_NS, FnModule.PREFIX),
"Creates an xs:dateTime from an xs:date, $date, and an xs:time, $time.",
new SequenceType[] {
new FunctionParameterSequenceType("date", Type.DATE,
Cardinality.ZERO_OR_ONE, "The date as xs:date"),
new FunctionParameterSequenceType("time", Type.TIME,
Cardinality.ZERO_OR_ONE, "The time as xs:time")
},
new FunctionReturnSequenceType(Type.DATE_TIME,
Cardinality.ZERO_OR_ONE, "the combined date and time as xs:dateTime")
);
public FunDateTime(XQueryContext context) {
super(context, signature);
}
public Sequence eval(Sequence[] args, Sequence contextSequence) throws XPathException {
if (context.getProfiler().isEnabled()) {
context.getProfiler().start(this);
context.getProfiler().message(this, Profiler.DEPENDENCIES,
"DEPENDENCIES", Dependency.getDependenciesName(this.getDependencies()));
if (contextSequence != null)
{context.getProfiler().message(this, Profiler.START_SEQUENCES,
"CONTEXT SEQUENCE", contextSequence);}
}
Sequence result;
if (args[0].isEmpty() || args[1].isEmpty()) {
result = Sequence.EMPTY_SEQUENCE;
} else if (args[0].hasMany()) {
throw new XPathException(this, ErrorCodes.XPTY0004,
"Expected at most one xs:date", args[0]);
} else if (args[1].hasMany()) {
throw new XPathException(this, ErrorCodes.XPTY0004,
"Expected at most one xs:time", args[1]);
} else {
final DateValue dv = (DateValue)args[0].itemAt(0);
final TimeValue tv = (TimeValue)args[1].itemAt(0);
if (!dv.getTimezone().isEmpty()) {
if (!tv.getTimezone().isEmpty()) {
if (!((DayTimeDurationValue)dv.getTimezone().itemAt(0))
.compareTo(null, Constants.EQ,
((DayTimeDurationValue)tv.getTimezone().itemAt(0)))) {
final ValueSequence argsSeq = new ValueSequence();
argsSeq.add(dv);
argsSeq.add(tv);
throw new XPathException(this, ErrorCodes.FORG0008,
"Operands have different timezones", argsSeq);
}
}
}
String dtv = ((DateTimeValue)dv.convertTo(Type.DATE_TIME)).getTrimmedCalendar().toXMLFormat();
if (dv.getTimezone().isEmpty()) {
dtv = dtv.substring(0, dtv.length() - 8);
result = new DateTimeValue(dtv + tv.getStringValue());
} else if ("PT0S".equals(((DayTimeDurationValue)dv.getTimezone().itemAt(0)).getStringValue())) {
dtv = dtv.substring(0, dtv.length() - 9);
if (tv.getTimezone().isEmpty()) {
result = new DateTimeValue(dtv + tv.getStringValue() + "Z");
} else {
result = new DateTimeValue(dtv + tv.getStringValue());
}
} else {
if (tv.getTimezone().isEmpty()) {
final String tz = dtv.substring(19);
dtv = dtv.substring(0, dtv.length() - 14);
result = new DateTimeValue(dtv + tv.getStringValue() + tz);
} else {
dtv = dtv.substring(0, dtv.length() - 14);
result = new DateTimeValue(dtv + tv.getStringValue());
}
}
}
if (context.getProfiler().isEnabled())
{context.getProfiler().end(this, "", result);}
return result;
}
}