org.kopsox.spreadsheet.util.POIUtil.java Source code

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Here is the source code for org.kopsox.spreadsheet.util.POIUtil.java

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/**
 * KSpreadsheet
 * Copyright (C) 2010 Free Software Foundation, Inc. <http://fsf.org/>
 * 
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.kopsox.spreadsheet.util;

import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.DateUtil;
import org.kopsox.spreadsheet.data.Value;
import org.kopsox.spreadsheet.data.common.BlankValue;
import org.kopsox.spreadsheet.data.common.BooleanValue;
import org.kopsox.spreadsheet.data.common.DateValue;
import org.kopsox.spreadsheet.data.common.DoubleValue;
import org.kopsox.spreadsheet.data.common.StringValue;

/**
 * Utility class for the usage of the Apache POI-Jar
 * 
 * @author Konrad Renner
 */
public final class POIUtil {

    private POIUtil() {
        //Utility class
    }

    /**
     * Gets a Value from the given Cell
     * 
     * @param cell
     * @return Value
     */
    @SuppressWarnings("boxing")
    public static final Value getValueFormCell(Cell cell) {

        //NUMERIC
        if (Cell.CELL_TYPE_NUMERIC == cell.getCellType()) {
            //Numeric can be a Date or a Double

            return getValueFromNumeric(cell, null);

        } //STRING
        else if (Cell.CELL_TYPE_STRING == cell.getCellType()) {

            return new StringValue(cell.getRichStringCellValue().getString());
        } //FORMEL
        else if (Cell.CELL_TYPE_FORMULA == cell.getCellType()) {
            String formula = cell.getCellFormula();

            return getValueFromFormula(formula, cell);
        } //BOOLEAN
        else if (Cell.CELL_TYPE_BOOLEAN == cell.getCellType()) {

            return new BooleanValue(cell.getBooleanCellValue());
        } //BLANK
        else if (Cell.CELL_TYPE_BLANK == cell.getCellType()) {

            return new BlankValue();
        } //ERROR
        else if (Cell.CELL_TYPE_ERROR == cell.getCellType()) {
            //TODO
            //NOT SUPPORTED AT THE MOMENT
        }

        return new BlankValue();
    }

    @SuppressWarnings("boxing")
    private static final Value getValueFromNumeric(Cell cell, String formula) {

        Value ret = null;

        //Numeric can be a Date or a Double
        if (!DateUtil.isCellDateFormatted(cell)) {
            DoubleValue tmp = new DoubleValue(cell.getNumericCellValue());
            tmp.setFormula(formula);
            ret = tmp;

        } else {
            DateValue tmp = new DateValue(cell.getDateCellValue());
            tmp.setFormula(formula);
            ret = tmp;

        }

        return ret;
    }

    @SuppressWarnings("boxing")
    private static final Value getValueFromFormula(String formula, Cell cell) {

        Value ret = null;

        if (Cell.CELL_TYPE_NUMERIC == cell.getCachedFormulaResultType()) {
            ret = getValueFromNumeric(cell, formula);

        } else if (Cell.CELL_TYPE_STRING == cell.getCachedFormulaResultType()) {
            StringValue tmp = new StringValue(cell.getRichStringCellValue().getString());
            tmp.setFormula(formula);
            ret = tmp;

        } else if (Cell.CELL_TYPE_BOOLEAN == cell.getCachedFormulaResultType()) {
            BooleanValue tmp = new BooleanValue(cell.getBooleanCellValue());
            tmp.setFormula(formula);
            ret = tmp;

        }

        return ret;
    }
}