What Is poi-5.2.3.jar?

poi-5.2.3.jar is one of the JAR files for Apache POI 5.2.3, which provides an API for Microsoft document files of Word, Excel, PowerPoint, and Visio.

poi-5.2.3.jar supports Apache POI components that read and write Microsoft's OLE 2 Compound document format, which is used in early versions of Microsoft Office tools like Word 97, Excel 97, PowerPoint 97, etc.

poi-5.2.3.jar is distributed as part of the poi-bin-5.2.3-20220909.zip download file.

JAR File Size and Download Location:

JAR name: poi-5.2.3.jar
Target JDK version: 9

File name: poi.jar, poi-5.2.3.jar
File size: 2964641 bytes
Release date: 09-09-2022
Download: Apache POI Website

Here are Java Source Code files for poi-5.2.3.jar:

⏎ org/apache/poi/ss/formula/functions/Mode.java

/* ====================================================================
   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 java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

import org.apache.poi.ss.formula.TwoDEval;
import org.apache.poi.ss.formula.eval.BlankEval;
import org.apache.poi.ss.formula.eval.BoolEval;
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.RefEval;
import org.apache.poi.ss.formula.eval.StringEval;
import org.apache.poi.ss.formula.eval.ValueEval;

public final class Mode implements Function {

    /**
     * if v is zero length or contains no duplicates, return value is
     * Double.NaN. Else returns the value that occurs most times and if there is
     * a tie, returns the first such value.
     *
     * @param v An array of values on which the mode is computed.
     */
    public static double evaluate(double[] v) throws EvaluationException {
        if (v.length < 2) {
            throw new EvaluationException(ErrorEval.NA);
        }

        // very naive impl, may need to be optimized
        int[] counts = new int[v.length];
        Arrays.fill(counts, 1);
        for (int i = 0, iSize = v.length; i < iSize; i++) {
            for (int j = i + 1, jSize = v.length; j < jSize; j++) {
                if (v[i] == v[j])
                    counts[i]++;
            }
        }
        double maxv = 0;
        int maxc = 0;
        for (int i = 0, iSize = counts.length; i < iSize; i++) {
            if (counts[i] > maxc) {
                maxv = v[i];
                maxc = counts[i];
            }
        }
        if (maxc > 1) {
            return maxv;
        }
        throw new EvaluationException(ErrorEval.NA);

    }

    public ValueEval evaluate(ValueEval[] args, int srcCellRow, int srcCellCol) {
        double result;
        try {
            List<Double> temp = new ArrayList<>();
            for (ValueEval arg : args) {
                collectValues(arg, temp);
            }
            double[] values = new double[temp.size()];
            for (int i = 0; i < values.length; i++) {
                values[i] = temp.get(i).doubleValue();
            }
            result = evaluate(values);
        } catch (EvaluationException e) {
            return e.getErrorEval();
        }
        return new NumberEval(result);
    }

    private static void collectValues(ValueEval arg, List<Double> temp) throws EvaluationException {
        if (arg instanceof TwoDEval) {
            TwoDEval ae = (TwoDEval) arg;
            int width = ae.getWidth();
            int height = ae.getHeight();
            for (int rrIx = 0; rrIx < height; rrIx++) {
                for (int rcIx = 0; rcIx < width; rcIx++) {
                    ValueEval ve1 = ae.getValue(rrIx, rcIx);
                    collectValue(ve1, temp, false);
                }
            }
            return;
        }
        if (arg instanceof RefEval) {
            RefEval re = (RefEval) arg;
            final int firstSheetIndex = re.getFirstSheetIndex();
            final int lastSheetIndex = re.getLastSheetIndex();
            for (int sIx = firstSheetIndex; sIx <= lastSheetIndex; sIx++) {
                collectValue(re.getInnerValueEval(sIx), temp, true);
            }
            return;
        }
        collectValue(arg, temp, true);

    }

    private static void collectValue(ValueEval arg, List<Double> temp, boolean mustBeNumber)
            throws EvaluationException {
        if (arg instanceof ErrorEval) {
            throw new EvaluationException((ErrorEval) arg);
        }
        if (arg == BlankEval.instance || arg instanceof BoolEval || arg instanceof StringEval) {
            if (mustBeNumber) {
                throw EvaluationException.invalidValue();
            }
            return;
        }
        if (arg instanceof NumberEval) {
            temp.add(Double.valueOf(((NumberEval) arg).getNumberValue()));
            return;
        }
        throw new RuntimeException("Unexpected value type (" + arg.getClass().getName() + ")");
    }
}

⏎ org/apache/poi/ss/formula/functions/Mode.java

Or download all of them as a single archive file:

File name: poi-5.2.3-src.zip
File size: 2479830 bytes
Release date: 2022-09-09
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