com.blackducksoftware.tools.commonframework.standard.datatable.reader.DataTableReaderExcel.java Source code

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/*******************************************************************************
 * Copyright (C) 2016 Black Duck Software, Inc.
 * http://www.blackducksoftware.com/
 *
 * 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 com.blackducksoftware.tools.commonframework.standard.datatable.reader;

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.InputStream;
import java.util.Date;
import java.util.GregorianCalendar;

import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.blackducksoftware.tools.commonframework.standard.datatable.DataTable;
import com.blackducksoftware.tools.commonframework.standard.datatable.FieldDef;
import com.blackducksoftware.tools.commonframework.standard.datatable.Record;

public class DataTableReaderExcel implements DataTableReader {
    private final Logger log = LoggerFactory.getLogger(this.getClass().getName());

    private Workbook workbook;

    private final InputStream inputStream;

    public DataTableReaderExcel(String filePath) throws FileNotFoundException {
        inputStream = new FileInputStream(filePath);
    }

    public DataTableReaderExcel(InputStream is) {
        inputStream = is;
    }

    @Override
    public void read(DataTable dataTable) throws Exception {

        workbook = new XSSFWorkbook(inputStream);
        Sheet sheet = workbook.getSheetAt(0);

        int rowIndex = 0;
        for (Row row : sheet) {
            log.debug("\nRow: " + rowIndex++);
            Record rec = new Record(dataTable.getRecordDef());
            int colIndex = 0;
            for (FieldDef fieldDef : dataTable.getRecordDef()) {
                log.debug("Col: " + colIndex + ": " + fieldDef.getName() + ": " + fieldDef.getDescription());

                Cell cell = row.getCell(colIndex++);
                readCell(rec, fieldDef, cell);
            }
            dataTable.add(rec);
        }
    }

    private void readCell(Record rec, FieldDef fieldDef, Cell cell) throws Exception {
        if (cell == null) {
            return;
        }
        switch (fieldDef.getType()) {
        case STRING:
            String cellStringValue = "";
            if (cell.getCellType() == Cell.CELL_TYPE_NUMERIC) {
                cellStringValue = String.valueOf(cell.getNumericCellValue());
            } else {
                cellStringValue = cell.getStringCellValue();
            }
            log.debug("String cell; value: " + cellStringValue);
            rec.setFieldValue(fieldDef.getName(), cellStringValue);
            break;
        case DATE:
            switch (cell.getCellType()) {
            case Cell.CELL_TYPE_BLANK:
                break;
            case Cell.CELL_TYPE_STRING:
                break;
            case Cell.CELL_TYPE_NUMERIC:
                Date cellDateValue = cell.getDateCellValue();
                GregorianCalendar cal = new GregorianCalendar();
                cal.setTime(cellDateValue);
                rec.setFieldValue(fieldDef.getName(), cal);
                break;
            }
            break;
        case HYPERLINK:
            throw new Exception("DataTableReaderExcel does not yet support HYPERLINK field type");
        default:
        }
    }
}