com.ivstars.astrology.util.LocationProvider.java Source code

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Here is the source code for com.ivstars.astrology.util.LocationProvider.java

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/*
 * Jastrology - Copyright 2006 Fengbo Xie, All Rights Reserved.
 *
 * http://www.ivstars.com/jastrology
 * http://sourceforge.net/projects/jastrology
 *
 * 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 com.ivstars.astrology.util;

import org.apache.poi.hssf.dev.HSSF;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.poifs.filesystem.POIFSFileSystem;

import java.io.InputStream;
import java.io.IOException;
import java.util.List;

/**
 * LocationProvider
 *
 * @author Fengbo Xie (fengbo.xie at gmail.com)
 *         Everything that has a beginning has an end.
 */
public class LocationProvider {
    HSSFWorkbook wb;
    String[] provinces;

    public LocationProvider(InputStream in) throws IOException {
        POIFSFileSystem fs = new POIFSFileSystem(in);
        wb = new HSSFWorkbook(fs);
    }

    public String[] listProvinces() {
        if (provinces == null) {
            int count = wb.getNumberOfSheets();
            provinces = new String[count];
            for (int i = 0; i < count; i++) {
                provinces[i] = wb.getSheetName(i);
            }
        }
        return provinces;
    }

    public Location[] listLocations(String province) {
        HSSFSheet sheet = wb.getSheet(province);
        int begin = sheet.getFirstRowNum();
        int end = sheet.getLastRowNum();
        Location[] locs = new Location[end - begin + 1];
        for (int i = begin; i <= end; i++) {
            locs[i - begin] = createLocation(sheet.getRow(i), province);
        }
        return locs;
    }

    private Location createLocation(HSSFRow row, String province) {
        return new Location(row.getCell((short) 5).getNumericCellValue(),
                row.getCell((short) 4).getNumericCellValue(), row.getCell((short) 0).getStringCellValue(),
                province);
    }
}