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The Apache Commons Codec package contains simple encoder and decoders for various formats such as Base64 and Hexadecimal. In addition to these widely used encoders and decoders, the codec package also maintains a collection of phonetic encoding utilities.

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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.hssf.usermodel;

import org.apache.poi.ss.formula.EvaluationCell;
import org.apache.poi.ss.formula.EvaluationSheet;
import org.apache.poi.util.Internal;

/**
 * HSSF wrapper for a sheet under evaluation
 */
@Internal
final class HSSFEvaluationSheet implements EvaluationSheet {

    private final HSSFSheet _hs;

    public HSSFEvaluationSheet(HSSFSheet hs) {
        _hs = hs;
    }

    public HSSFSheet getHSSFSheet() {
        return _hs;
    }
    
    /* (non-Javadoc)
     * @see org.apache.poi.ss.formula.EvaluationSheet#getlastRowNum()
     * @since POI 4.0.0
     */
    @Override
    public int getLastRowNum() {
        return _hs.getLastRowNum();
    }

    /* (non-Javadoc)
     * @see org.apache.poi.ss.formula.EvaluationSheet#isRowHidden(int)
     * @since POI 4.1.0
     */
    public boolean isRowHidden(int rowIndex) {
        HSSFRow row = _hs.getRow(rowIndex);
        if (row == null) return false;
        return row.getZeroHeight();
    }

    @Override
    public EvaluationCell getCell(int rowIndex, int columnIndex) {
        HSSFRow row = _hs.getRow(rowIndex);
        if (row == null) {
            return null;
        }
        HSSFCell cell = row.getCell(columnIndex);
        if (cell == null) {
            return null;
        }
        return new HSSFEvaluationCell(cell, this);
    }

    /* (non-JavaDoc), inherit JavaDoc from EvaluationSheet
     * @since POI 3.15 beta 3
     */    
    @Override
    public void clearAllCachedResultValues() {
    }
}