Bugzilla 46523 - added implementation for SUMIF
git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@734252 13f79535-47bb-0310-9956-ffa450edef68
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@ -37,6 +37,7 @@
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<!-- Don't forget to update status.xml too! -->
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<release version="3.5-beta5" date="2008-??-??">
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<action dev="POI-DEVELOPERS" type="add">46523 - added implementation for SUMIF function</action>
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<action dev="POI-DEVELOPERS" type="add">Support for reading HSSF column styles</action>
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<action dev="POI-DEVELOPERS" type="fix">Hook up POIXMLTextExtractor.getMetadataTextExtractor() to the already written POIXMLPropertiesTextExtractor</action>
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<action dev="POI-DEVELOPERS" type="fix">46472 - Avoid NPE in HPSFPropertiesExtractor when no properties exist</action>
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@ -34,6 +34,7 @@
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<!-- Don't forget to update changes.xml too! -->
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<changes>
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<release version="3.5-beta5" date="2008-??-??">
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<action dev="POI-DEVELOPERS" type="add">46523 - added implementation for SUMIF function</action>
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<action dev="POI-DEVELOPERS" type="add">Support for reading HSSF column styles</action>
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<action dev="POI-DEVELOPERS" type="fix">Hook up POIXMLTextExtractor.getMetadataTextExtractor() to the already written POIXMLPropertiesTextExtractor</action>
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<action dev="POI-DEVELOPERS" type="fix">46472 - Avoid NPE in HPSFPropertiesExtractor when no properties exist</action>
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@ -1,25 +1,123 @@
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/*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. 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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* Created on May 15, 2005
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*
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*/
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/* ====================================================================
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Licensed to the Apache Software Foundation (ASF) under one or more
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contributor license agreements. See the NOTICE file distributed with
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this work for additional information regarding copyright ownership.
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The ASF licenses this file to You under the Apache License, Version 2.0
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(the "License"); you may not use this file except in compliance with
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the License. You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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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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package org.apache.poi.hssf.record.formula.functions;
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public class Sumif extends NotImplementedFunction {
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import org.apache.poi.hssf.record.formula.eval.AreaEval;
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import org.apache.poi.hssf.record.formula.eval.ErrorEval;
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import org.apache.poi.hssf.record.formula.eval.Eval;
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import org.apache.poi.hssf.record.formula.eval.EvaluationException;
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import org.apache.poi.hssf.record.formula.eval.NumberEval;
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import org.apache.poi.hssf.record.formula.eval.RefEval;
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import org.apache.poi.hssf.record.formula.eval.ValueEval;
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import org.apache.poi.hssf.record.formula.functions.CountUtils.I_MatchPredicate;
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/**
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* Implementation for the Excel function SUMIF<p>
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*
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* Syntax : <br/>
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* SUMIF ( <b>range</b>, <b>criteria</b>, sum_range ) <br/>
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* <table border="0" cellpadding="1" cellspacing="0" summary="Parameter descriptions">
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* <tr><th>range</th><td>The range over which criteria is applied. Also used for addend values when the third parameter is not present</td></tr>
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* <tr><th>criteria</th><td>The value or expression used to filter rows from <b>range</b></td></tr>
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* <tr><th>sum_range</th><td>Locates the top-left corner of the corresponding range of addends - values to be added (after being selected by the criteria)</td></tr>
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* </table><br/>
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* </p>
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* @author Josh Micich
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*/
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public final class Sumif implements Function {
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public Eval evaluate(Eval[] args, int srcRowIndex, short srcColumnIndex) {
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if (args.length < 2) {
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return ErrorEval.VALUE_INVALID;
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}
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AreaEval aeRange;
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AreaEval aeSum;
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try {
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aeRange = convertRangeArg(args[0]);
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switch (args.length) {
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case 2:
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aeSum = aeRange;
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break;
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case 3:
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aeSum = createSumRange(args[2], aeRange);
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break;
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default:
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return ErrorEval.VALUE_INVALID;
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}
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} catch (EvaluationException e) {
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return e.getErrorEval();
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}
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I_MatchPredicate mp = Countif.createCriteriaPredicate(args[1], srcRowIndex, srcRowIndex);
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double result = sumMatchingCells(aeRange, mp, aeSum);
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return new NumberEval(result);
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}
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private static double sumMatchingCells(AreaEval aeRange, I_MatchPredicate mp, AreaEval aeSum) {
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int height=aeRange.getHeight();
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int width= aeRange.getWidth();
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double result = 0.0;
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for (int r=0; r<height; r++) {
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for (int c=0; c<width; c++) {
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result += accumulate(aeRange, mp, aeSum, r, c);
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}
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}
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return result;
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}
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private static double accumulate(AreaEval aeRange, I_MatchPredicate mp, AreaEval aeSum, int relRowIndex,
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int relColIndex) {
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if (!mp.matches(aeRange.getRelativeValue(relRowIndex, relColIndex))) {
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return 0.0;
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}
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ValueEval addend = aeSum.getRelativeValue(relRowIndex, relColIndex);
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if (addend instanceof NumberEval) {
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return ((NumberEval)addend).getNumberValue();
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}
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// everything else (including string and boolean values) counts as zero
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return 0.0;
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}
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/**
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* @return a range of the same dimensions as aeRange using eval to define the top left corner.
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* @throws EvaluationException if eval is not a reference
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*/
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private static AreaEval createSumRange(Eval eval, AreaEval aeRange) throws EvaluationException {
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if (eval instanceof AreaEval) {
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return ((AreaEval) eval).offset(0, aeRange.getHeight()-1, 0, aeRange.getWidth()-1);
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}
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if (eval instanceof RefEval) {
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return ((RefEval)eval).offset(0, aeRange.getHeight()-1, 0, aeRange.getWidth()-1);
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}
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throw new EvaluationException(ErrorEval.VALUE_INVALID);
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}
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private static AreaEval convertRangeArg(Eval eval) throws EvaluationException {
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if (eval instanceof AreaEval) {
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return (AreaEval) eval;
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}
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if (eval instanceof RefEval) {
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return ((RefEval)eval).offset(0, 0, 0, 0);
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}
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throw new EvaluationException(ErrorEval.VALUE_INVALID);
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}
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}
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