de.jlo.talendcomp.excel.SpreadsheetNamedCellInput.java Source code

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Here is the source code for de.jlo.talendcomp.excel.SpreadsheetNamedCellInput.java

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/**
 * Copyright 2015 Jan Lolling jan.lolling@gmail.com
 * 
 * Licensed 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 de.jlo.talendcomp.excel;

import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.CellType;
import org.apache.poi.ss.usermodel.DateUtil;
import org.apache.poi.ss.usermodel.Name;
import org.apache.poi.ss.util.CellReference;

public class SpreadsheetNamedCellInput extends SpreadsheetFile {

    private int namedCellCount = 0;
    private int currentNamedCellIndex = 0;
    private Cell currentNamedCell = null;
    private String valueClass;
    private String cellName;

    public void retrieveNamedCellCount() {
        namedCellCount = workbook.getNumberOfNames();
    }

    public boolean readNextNamedCell() {
        if (workbook == null) {
            throw new IllegalStateException("workbook is not initialized");
        }
        if (namedCellCount == 0) {
            return false;
        } else {
            if (currentNamedCellIndex < namedCellCount) {
                Name name = workbook.getNameAt(currentNamedCellIndex);
                cellName = name.getNameName();
                currentNamedCell = getNamedCell(name);
                currentNamedCellIndex++;
                return true;
            } else {
                currentNamedCellIndex++;
                return false;
            }
        }
    }

    public int getNumberOfNamedCells() {
        return namedCellCount;
    }

    public int getCurrentCellIndex() {
        return currentNamedCellIndex - 1;
    }

    public Object getCellValue() {
        if (currentNamedCell != null) { // cell.getCellTypeEnum() == CellType.BLANK
            if (currentNamedCell.getCellTypeEnum() == CellType.BLANK) {
                valueClass = null;
                return null;
            } else if (currentNamedCell.getCellTypeEnum() == CellType.BOOLEAN) {
                valueClass = "java.lang.Boolean";
                return currentNamedCell.getBooleanCellValue();
            } else if (currentNamedCell.getCellTypeEnum() == CellType.ERROR) {
                valueClass = null;
                return null;
            } else if (currentNamedCell.getCellTypeEnum() == CellType.FORMULA) {
                valueClass = "java.lang.String";
                return getDataFormatter().formatCellValue(currentNamedCell, getFormulaEvaluator());
            } else if (currentNamedCell.getCellTypeEnum() == CellType.NUMERIC) {
                if (DateUtil.isCellDateFormatted(currentNamedCell)) {
                    valueClass = "java.util.Date";
                    return currentNamedCell.getDateCellValue();
                } else {
                    valueClass = "java.lang.Double";
                    return currentNamedCell.getNumericCellValue();
                }
            } else if (currentNamedCell.getCellTypeEnum() == CellType.STRING) {
                valueClass = "java.lang.String";
                return currentNamedCell.getStringCellValue();
            } else {
                valueClass = null;
                return null;
            }
        } else {
            valueClass = null;
            return null;
        }
    }

    public String getValueClass() {
        return valueClass;
    }

    public String getCellName() {
        return cellName;
    }

    public int getCellRowIndex() {
        if (currentNamedCell != null) {
            return currentNamedCell.getRowIndex() + 1;
        } else {
            return -1;
        }
    }

    public int getCellColumnIndex() {
        if (currentNamedCell != null) {
            return currentNamedCell.getColumnIndex();
        } else {
            return -1;
        }
    }

    public String getCellExcelReference() {
        if (currentNamedCell != null) {
            CellReference reference = new CellReference(currentNamedCell.getRowIndex(),
                    currentNamedCell.getColumnIndex(), true, true);
            return reference.formatAsString();
        } else {
            return null;
        }
    }

    public String getCellSheetName() {
        if (currentNamedCell != null) {
            return currentNamedCell.getSheet().getSheetName();
        } else {
            return null;
        }
    }

}