| /* ==================================================================== |
| Licensed to the Apache Software Foundation (ASF) under one or more |
| contributor license agreements. See the NOTICE file distributed with |
| this work for additional information regarding copyright ownership. |
| The ASF licenses this file to You under the Apache License, Version 2.0 |
| (the "License"); you may not use this file except in compliance with |
| the License. You may obtain a copy of the License at |
| |
| http://www.apache.org/licenses/LICENSE-2.0 |
| |
| Unless required by applicable law or agreed to in writing, software |
| distributed under the License is distributed on an "AS IS" BASIS, |
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| See the License for the specific language governing permissions and |
| limitations under the License. |
| ==================================================================== */ |
| |
| |
| package org.apache.poi.ss.formula.functions; |
| |
| import org.apache.poi.ss.formula.OperationEvaluationContext; |
| import org.apache.poi.ss.formula.eval.ErrorEval; |
| import org.apache.poi.ss.formula.eval.NumberEval; |
| import org.apache.poi.ss.formula.eval.ValueEval; |
| |
| /** |
| * Implementation for the function COUNTIFS |
| * <p> |
| * Syntax: COUNTIFS(criteria_range1, criteria1, [criteria_range2, criteria2]) |
| * </p> |
| */ |
| |
| public class Countifs implements FreeRefFunction { |
| public static final FreeRefFunction instance = new Countifs(); |
| |
| public ValueEval evaluate(ValueEval[] args, OperationEvaluationContext ec) { |
| // https://support.office.com/en-us/article/COUNTIFS-function-dda3dc6e-f74e-4aee-88bc-aa8c2a866842?ui=en-US&rs=en-US&ad=US |
| // COUNTIFS(criteria_range1, criteria1, [criteria_range2, criteria2]...) |
| // need at least 2 arguments and need to have an even number of arguments (criteria_range1, criteria1 plus x*(criteria_range, criteria)) |
| if (args.length < 2 || args.length % 2 != 0) { |
| return ErrorEval.VALUE_INVALID; |
| } |
| |
| Double result = null; |
| // for each (criteria_range, criteria) pair |
| for (int i = 0; i < args.length; i += 2) { |
| ValueEval firstArg = args[i]; |
| ValueEval secondArg = args[i + 1]; |
| NumberEval evaluate = (NumberEval) new Countif().evaluate( |
| new ValueEval[] {firstArg, secondArg}, |
| ec.getRowIndex(), |
| ec.getColumnIndex()); |
| if (result == null) { |
| result = evaluate.getNumberValue(); |
| } else if (evaluate.getNumberValue() < result) { |
| result = evaluate.getNumberValue(); |
| } |
| } |
| return new NumberEval(result == null ? 0 : result); |
| } |
| } |
| |