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- /*
- * ====================================================================
- * 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.eval.AreaEval;
- import org.apache.poi.ss.formula.eval.ErrorEval;
- import org.apache.poi.ss.formula.eval.EvaluationException;
- import org.apache.poi.ss.formula.eval.NumberEval;
- import org.apache.poi.ss.formula.eval.OperandResolver;
- import org.apache.poi.ss.formula.eval.RefEval;
- import org.apache.poi.ss.formula.eval.ValueEval;
-
-
- /**
- * Returns the rank of a number in a list of numbers. The rank of a number is its size relative to other values in a list.
-
- * Syntax:
- * RANK(number,ref,order)
- * Number is the number whose rank you want to find.
- * Ref is an array of, or a reference to, a list of numbers. Nonnumeric values in ref are ignored.
- * Order is a number specifying how to rank number.
-
- * If order is 0 (zero) or omitted, Microsoft Excel ranks number as if ref were a list sorted in descending order.
- * If order is any nonzero value, Microsoft Excel ranks number as if ref were a list sorted in ascending order.
- *
- * @author Rubin Wang
- */
- public class Rank extends Var2or3ArgFunction {
-
- public ValueEval evaluate(int srcRowIndex, int srcColumnIndex, ValueEval arg0, ValueEval arg1) {
-
- AreaEval aeRange;
- double result;
- try {
- ValueEval ve = OperandResolver.getSingleValue(arg0, srcRowIndex, srcColumnIndex);
- result = OperandResolver.coerceValueToDouble(ve);
- if (Double.isNaN(result) || Double.isInfinite(result)) {
- throw new EvaluationException(ErrorEval.NUM_ERROR);
- }
- aeRange = convertRangeArg(arg1);
- } catch (EvaluationException e) {
- return e.getErrorEval();
- }
- return eval(srcRowIndex, srcColumnIndex, result, aeRange, true);
- }
-
- public ValueEval evaluate(int srcRowIndex, int srcColumnIndex, ValueEval arg0, ValueEval arg1, ValueEval arg2) {
-
- AreaEval aeRange;
- double result;
- boolean order=false;
- try {
- ValueEval ve = OperandResolver.getSingleValue(arg0, srcRowIndex, srcColumnIndex);
- result = OperandResolver.coerceValueToDouble(ve);
- if (Double.isNaN(result) || Double.isInfinite(result)) {
- throw new EvaluationException(ErrorEval.NUM_ERROR);
- }
- aeRange = convertRangeArg(arg1);
-
- ve = OperandResolver.getSingleValue(arg2, srcRowIndex, srcColumnIndex);
- int order_value = OperandResolver.coerceValueToInt(ve);
- if(order_value==0){
- order=true;
- }else if(order_value==1){
- order=false;
- }else throw new EvaluationException(ErrorEval.NUM_ERROR);
-
- } catch (EvaluationException e) {
- return e.getErrorEval();
- }
- return eval(srcRowIndex, srcColumnIndex, result, aeRange, order);
- }
-
- private static ValueEval eval(int srcRowIndex, int srcColumnIndex, double arg0, AreaEval aeRange, boolean descending_order) {
-
- int rank = 1;
- int height=aeRange.getHeight();
- int width= aeRange.getWidth();
- for (int r=0; r<height; r++) {
- for (int c=0; c<width; c++) {
-
- Double value = getValue(aeRange, r, c);
- if(value==null)continue;
- if(descending_order && value>arg0 || !descending_order && value<arg0){
- rank++;
- }
- }
- }
- return new NumberEval(rank);
- }
-
- private static Double getValue(AreaEval aeRange, int relRowIndex, int relColIndex) {
-
- ValueEval addend = aeRange.getRelativeValue(relRowIndex, relColIndex);
- if (addend instanceof NumberEval) {
- return ((NumberEval)addend).getNumberValue();
- }
- // everything else (including string and boolean values) counts as zero
- return null;
- }
-
- private static AreaEval convertRangeArg(ValueEval eval) throws EvaluationException {
- if (eval instanceof AreaEval) {
- return (AreaEval) eval;
- }
- if (eval instanceof RefEval) {
- return ((RefEval)eval).offset(0, 0, 0, 0);
- }
- throw new EvaluationException(ErrorEval.VALUE_INVALID);
- }
-
- }
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