82 lines
2.7 KiB
Java
82 lines
2.7 KiB
Java
/* ====================================================================
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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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import org.apache.poi.hssf.record.formula.eval.AreaEval;
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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.RefEval;
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import org.apache.poi.hssf.record.formula.eval.ValueEval;
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/**
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* Common logic for COUNT, COUNTA and COUNTIF
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*
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* @author Josh Micich
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*/
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final class CountUtils {
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private CountUtils() {
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// no instances of this class
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}
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/**
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* Common interface for the matching criteria.
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*/
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public interface I_MatchPredicate {
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boolean matches(Eval x);
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}
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/**
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* @return the number of evaluated cells in the range that match the specified criteria
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*/
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public static int countMatchingCellsInArea(AreaEval areaEval, I_MatchPredicate criteriaPredicate) {
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int result = 0;
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int height = areaEval.getHeight();
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int width = areaEval.getWidth();
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for (int rrIx=0; rrIx<height; rrIx++) {
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for (int rcIx=0; rcIx<width; rcIx++) {
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ValueEval ve = areaEval.getRelativeValue(rrIx, rcIx);
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if(criteriaPredicate.matches(ve)) {
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result++;
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}
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}
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}
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return result;
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}
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/**
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* @return 1 if the evaluated cell matches the specified criteria
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*/
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public static int countMatchingCell(RefEval refEval, I_MatchPredicate criteriaPredicate) {
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if(criteriaPredicate.matches(refEval.getInnerValueEval())) {
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return 1;
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}
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return 0;
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}
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public static int countArg(Eval eval, I_MatchPredicate criteriaPredicate) {
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if (eval == null) {
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throw new IllegalArgumentException("eval must not be null");
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}
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if (eval instanceof AreaEval) {
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return CountUtils.countMatchingCellsInArea((AreaEval) eval, criteriaPredicate);
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}
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if (eval instanceof RefEval) {
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return CountUtils.countMatchingCell((RefEval) eval, criteriaPredicate);
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}
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return criteriaPredicate.matches(eval) ? 1 : 0;
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}
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}
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