/*
* @(#)$Id: DateTime.java 3619 2008-03-26 07:23:03Z yui $
*
* Copyright 2006-2008 Makoto YUI
*
* Licensed 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.
*
* Contributors:
* Makoto YUI - initial implementation
*/
package xbird.xquery.func.constructor;
import javax.xml.datatype.DatatypeConstants;
import javax.xml.datatype.XMLGregorianCalendar;
import xbird.xquery.DynamicError;
import xbird.xquery.XQueryException;
import xbird.xquery.dm.value.Item;
import xbird.xquery.dm.value.Sequence;
import xbird.xquery.dm.value.sequence.ValueSequence;
import xbird.xquery.dm.value.xsi.DateTimeValue;
import xbird.xquery.func.BuiltInFunction;
import xbird.xquery.func.FunctionSignature;
import xbird.xquery.meta.DynamicContext;
import xbird.xquery.type.Type;
import xbird.xquery.type.xs.*;
/**
* fn:dateTime($arg1 as xs:date, $arg2 as xs:time) as xs:dateTime.
* <DIV lang="en">
* A special constructor function is provided for constructing a xs:dateTime
* value from a xs:date value and a xs:time value.
* </DIV>
* <DIV lang="ja"></DIV>
*
* @author Makoto YUI (yuin405+xbird@gmail.com)
* @link http://www.w3.org/TR/xquery-operators/#func-dateTime
*/
public final class DateTime extends BuiltInFunction {
private static final long serialVersionUID = -8630350815622049802L;
public static final String SYMBOL = "fn:dateTime";
public DateTime() {
super(SYMBOL, DateTimeType.DATETIME);
}
protected FunctionSignature[] signatures() {
final FunctionSignature[] s = new FunctionSignature[1];
s[0] = new FunctionSignature(getName(), new Type[] { DateType.DATE, TimeType.TIME });
return s;
}
public Sequence eval(Sequence<? extends Item> contextSeq, ValueSequence argv, DynamicContext dynEnv)
throws XQueryException {
Item arg1 = argv.getItem(0);
Item arg2 = argv.getItem(1);
DateTimeValue date = (DateTimeValue) arg1;
DateTimeValue time = (DateTimeValue) arg2;
XMLGregorianCalendar dateValue = date.getValue();
XMLGregorianCalendar newValue = (XMLGregorianCalendar) dateValue.clone();
XMLGregorianCalendar timeValue = time.getValue();
final int timeTz = timeValue.getTimezone();
if(timeTz != DatatypeConstants.FIELD_UNDEFINED) {
final int dateTz = newValue.getTimezone();
if(dateTz != DatatypeConstants.FIELD_UNDEFINED && dateTz != timeTz) {
throw new DynamicError("err:FORG0008", "fn:dateTime(" + date + ", " + time
+ ") for `" + dateValue.getTimeZone(dateTz).getID() + " and `"
+ timeValue.getTimeZone(timeTz).getID() + "` is not allowed.");
}
newValue.setTimezone(timeTz);
}
newValue.setTime(timeValue.getHour(), timeValue.getMinute(), timeValue.getSecond(), timeValue.getMillisecond());
DateTimeValue dt = new DateTimeValue(newValue, DateTimeType.DATETIME);
return dt;
}
}