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68 lines
2.0 KiB
68 lines
2.0 KiB
/*
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* Copyright (c) 2007, 2018, Oracle and/or its affiliates. All rights reserved.
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* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
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*/
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/*
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* Copyright 1999-2004 The Apache Software Foundation.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/*
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* $Id: FuncSum.java,v 1.2.4.1 2005/09/14 20:18:46 jeffsuttor Exp $
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*/
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package com.sun.org.apache.xpath.internal.functions;
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import com.sun.org.apache.xml.internal.dtm.DTM;
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import com.sun.org.apache.xml.internal.dtm.DTMIterator;
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import com.sun.org.apache.xml.internal.utils.XMLString;
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import com.sun.org.apache.xpath.internal.XPathContext;
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import com.sun.org.apache.xpath.internal.objects.XNumber;
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import com.sun.org.apache.xpath.internal.objects.XObject;
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/**
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* Execute the Sum() function.
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* @xsl.usage advanced
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*/
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public class FuncSum extends FunctionOneArg
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{
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static final long serialVersionUID = -2719049259574677519L;
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/**
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* Execute the function. The function must return
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* a valid object.
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* @param xctxt The current execution context.
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* @return A valid XObject.
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*
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* @throws javax.xml.transform.TransformerException
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*/
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public XObject execute(XPathContext xctxt) throws javax.xml.transform.TransformerException
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{
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DTMIterator nodes = m_arg0.asIterator(xctxt, xctxt.getCurrentNode());
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double sum = 0.0;
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int pos;
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while (DTM.NULL != (pos = nodes.nextNode()))
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{
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DTM dtm = nodes.getDTM(pos);
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XMLString s = dtm.getStringValue(pos);
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if (null != s)
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sum += s.toDouble();
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}
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nodes.detach();
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return new XNumber(sum);
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}
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}
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