/* * The Apache Software License, Version 1.1 * * * Copyright (c) 1999 The Apache Software Foundation. All rights * reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * * 3. The end-user documentation included with the redistribution, * if any, must include the following acknowledgment: * "This product includes software developed by the * Apache Software Foundation (http://www.apache.org/)." * Alternately, this acknowledgment may appear in the software itself, * if and wherever such third-party acknowledgments normally appear. * * 4. The names "Xalan" and "Apache Software Foundation" must * not be used to endorse or promote products derived from this * software without prior written permission. For written * permission, please contact apache@apache.org. * * 5. Products derived from this software may not be called "Apache", * nor may "Apache" appear in their name, without prior written * permission of the Apache Software Foundation. * * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. 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For more * information on the Apache Software Foundation, please see * . */ package org.apache.xpath.operations; import javax.xml.transform.TransformerException; import org.apache.xml.dtm.XType; import org.apache.xml.utils.DateTimeObj; import org.apache.xml.utils.Duration; import org.apache.xpath.XPathContext; import org.apache.xpath.objects.XDate; import org.apache.xpath.objects.XDateTime; import org.apache.xpath.objects.XDouble; import org.apache.xpath.objects.XDuration; import org.apache.xpath.objects.XDTDuration; import org.apache.xpath.objects.XYMDuration; import org.apache.xpath.objects.XFloat; import org.apache.xpath.objects.XInteger; import org.apache.xpath.objects.XObject; import org.apache.xpath.objects.XTime; /** * The binary '-' operation expression executer. */ public class Subtract extends OperationNormalized { static OpFuncLookupTable m_funcs; { m_funcs = new OpFuncLookupTable(); m_funcs.setFunc(XType.DOUBLE, new GenericOpFunc() { public XObject operate(XPathContext xctxt, XObject lhs, XObject rhs) throws TransformerException { return new XDouble(lhs.num() - rhs.num()); } }); m_funcs.setFunc(XType.FLOAT, new GenericOpFunc() { public XObject operate(XPathContext xctxt, XObject lhs, XObject rhs) throws TransformerException { return new XFloat(lhs.floatVal() - rhs.floatVal()); } }); m_funcs.setFunc(XType.INTEGER, new GenericOpFunc() { public XObject operate(XPathContext xctxt, XObject lhs, XObject rhs) throws TransformerException { return new XInteger(lhs.integer() - rhs.integer()); } }); m_funcs.setFunc(XType.DECIMAL, NOTSUPPORTED); m_funcs.setFunc(XType.DURATION, new GenericOpFunc() { public XObject operate(XPathContext xctxt, XObject lhs, XObject rhs) throws TransformerException { Duration duration1 = lhs.duration(); // The normalizer should make sure the second argument is always // a duration! Duration duration2 = rhs.duration(); Duration du = duration1.subtractDTDuration(duration2); return new XDuration(du); } }); m_funcs.setFunc(XType.DAYTIMEDURATION, new GenericOpFunc() { public XObject operate(XPathContext xctxt, XObject lhs, XObject rhs) throws TransformerException { // for now... int rhsVT = rhs.getValueType(); if(XType.DURATION == rhsVT || XType.DAYTIMEDURATION == rhsVT) { Duration duration1 = lhs.duration(); // The normalizer should make sure the second argument is always // a duration! Duration duration2 = rhs.duration(); Duration du = duration1.subtractDTDuration(duration2); return new XDTDuration(du); } else { throw new TransformerException("Type Exception!"); } } }); m_funcs.setFunc(XType.YEARMONTHDURATION, new GenericOpFunc() { public XObject operate(XPathContext xctxt, XObject lhs, XObject rhs) throws TransformerException { // for now... int rhsVT = rhs.getValueType(); if(XType.DURATION == rhsVT || XType.YEARMONTHDURATION == rhsVT) { Duration duration1 = lhs.duration(); // The normalizer should make sure the second argument is always // a duration! Duration duration2 = rhs.duration(); Duration du = duration1.subtractYMDuration(duration2); return new XYMDuration(du); } else { throw new TransformerException("Type Exception!"); } } }); m_funcs.setFunc(XType.DATETIME, new GenericOpFunc() { public XObject operate(XPathContext xctxt, XObject lhs, XObject rhs) throws TransformerException { DateTimeObj dt = lhs.datetime(); // The normalizer should int rhsVT = rhs.getValueType(); if(XType.DURATION == rhsVT || XType.DAYTIMEDURATION == rhsVT) { Duration duration2 = rhs.duration(); DateTimeObj du = dt.subtractDTDurationFromDateTime(duration2); return new XDateTime(du); } else //if(XType.YEARMONTHDURATION == rhsVT) { Duration duration2 = rhs.duration(); DateTimeObj du = dt.subtractYMDurationFromDateTime(duration2); return new XDateTime(du); } } }); m_funcs.setFunc(XType.TIME, new GenericOpFunc() { public XObject operate(XPathContext xctxt, XObject lhs, XObject rhs) throws TransformerException { DateTimeObj oldTime = lhs.time(); // The normalizer should Duration duration2 = rhs.duration(); DateTimeObj newTime = oldTime.subtractDTDurationFromTime(duration2); return new XTime(newTime); } }); m_funcs.setFunc(XType.DATE, new GenericOpFunc() { public XObject operate(XPathContext xctxt, XObject lhs, XObject rhs) throws TransformerException { DateTimeObj dt = lhs.date(); // The normalizer should int rhsVT = rhs.getValueType(); if(XType.DURATION == rhsVT || XType.DAYTIMEDURATION == rhsVT) { Duration duration2 = rhs.duration(); DateTimeObj newDate = dt.subtractDTDurationFromDate(duration2); return new XDate(newDate); } else if(XType.YEARMONTHDURATION == rhsVT) { Duration duration2 = rhs.duration(); DateTimeObj newDate = dt.subtractYMDurationFromDate(duration2); return new XDate(newDate); } else { DateTimeObj dt2 = rhs.date(); Duration duration = dt.subtractDateFromDate(dt2); return new XDuration(duration); } } }); m_funcs.setFunc(XType.GYEARMONTH, NOTSUPPORTED); m_funcs.setFunc(XType.GYEAR, NOTSUPPORTED); m_funcs.setFunc(XType.GMONTHDAY, NOTSUPPORTED); m_funcs.setFunc(XType.GDAY, NOTSUPPORTED); m_funcs.setFunc(XType.GMONTH, NOTSUPPORTED); m_funcs.setFunc(XType.BOOLEAN, NOTSUPPORTED); m_funcs.setFunc(XType.STRING, NOTSUPPORTED); m_funcs.setFunc(XType.BASE64BINARY, NOTSUPPORTED); m_funcs.setFunc(XType.HEXBINARY, NOTSUPPORTED); m_funcs.setFunc(XType.ANYURI, NOTSUPPORTED); m_funcs.setFunc(XType.QNAME, NOTSUPPORTED); m_funcs.setFunc(XType.NOTATION, NOTSUPPORTED); } /** * @see org.apache.xpath.operations.Operation#getLookupTable() */ public OpFuncLookupTable getLookupTable() { return m_funcs; } }