| /******************************************************************************* |
| * Copyright (c) 2005, 2010 Andrea Bittau, University College London, and others |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * Andrea Bittau - initial API and implementation from the PsychoPath XPath 2.0 |
| * Jesper S Moller - bug 286452 - always return the stable date/time from dynamic context |
| * Mukul Gandhi - bug 280798 - PsychoPath support for JDK 1.4 |
| *******************************************************************************/ |
| |
| package org.eclipse.wst.xml.xpath2.processor.internal.function; |
| |
| import java.util.Collection; |
| |
| import javax.xml.datatype.Duration; |
| |
| import org.eclipse.wst.xml.xpath2.api.DynamicContext; |
| import org.eclipse.wst.xml.xpath2.api.EvaluationContext; |
| import org.eclipse.wst.xml.xpath2.api.ResultSequence; |
| import org.eclipse.wst.xml.xpath2.processor.DynamicError; |
| import org.eclipse.wst.xml.xpath2.processor.ResultSequenceFactory; |
| import org.eclipse.wst.xml.xpath2.processor.internal.types.AnyType; |
| import org.eclipse.wst.xml.xpath2.processor.internal.types.QName; |
| import org.eclipse.wst.xml.xpath2.processor.internal.types.XSDayTimeDuration; |
| import org.eclipse.wst.xml.xpath2.processor.internal.types.XSTime; |
| |
| /** |
| * Returns xs:time(fn:current-dateTime()). This is a xs:time (with timezone) that |
| * is current at some time during the evaluation of a query or transformation in |
| * which fn:current-time() is executed. This function is stable. The precise |
| * instant during the query or transformation represented by the value of |
| * fn:current-time() is implementation dependent. |
| */ |
| public class FnCurrentTime extends Function { |
| /** |
| * Constructor for FnCurrentTime. |
| */ |
| public FnCurrentTime() { |
| super(new QName("current-time"), 0); |
| } |
| |
| /** |
| * Evaluate arguments. |
| * |
| * @param args |
| * argument expressions. |
| * @throws DynamicError |
| * Dynamic error. |
| * @return Result of evaluation. |
| */ |
| public ResultSequence evaluate(Collection args, EvaluationContext ec) throws DynamicError { |
| return current_time(args, ec.getDynamicContext()); |
| } |
| |
| /** |
| * Current-Time operation. |
| * |
| * @param args |
| * Result from the expressions evaluation. |
| * @param dc |
| * Result of dynamic context operation. |
| * @throws DynamicError |
| * Dynamic error. |
| * @return Result of fn:current-time operation. |
| */ |
| public static ResultSequence current_time(Collection args, DynamicContext dc) |
| throws DynamicError { |
| assert args.size() == 0; |
| |
| Duration d = dc.getTimezoneOffset(); |
| XSDayTimeDuration tz = new XSDayTimeDuration(0, d.getHours(), d.getMinutes(), 0.0, d.getSign() == -1); |
| |
| AnyType res = new XSTime(dc.getCurrentDateTime(), tz); |
| |
| return ResultSequenceFactory.create_new(res); |
| } |
| } |