it.geosolutions.geobatch.opensdi.csvingest.utils.CSVIngestUtils.java Source code

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Here is the source code for it.geosolutions.geobatch.opensdi.csvingest.utils.CSVIngestUtils.java

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/*
 *  Copyright (C) 2007 - 2013 GeoSolutions S.A.S.
 *  http://www.geo-solutions.it
 * 
 *  GPLv3 + Classpath exception
 * 
 *  This program is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU 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 General Public License for more details.
 * 
 *  You should have received a copy of the GNU General Public License
 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package it.geosolutions.geobatch.opensdi.csvingest.utils;

import it.geosolutions.geobatch.opensdi.csvingest.processor.CSVProcessException;

import org.springframework.util.StringUtils;

/**
 * Utilities for CSV ingest
 * 
 * @author adiaz
 */
public class CSVIngestUtils {

    /**
     * Obtain the s_dec in the year.<br />
     * The s_dec is 1 -- 36 , 1 is the first decade in November 36 is the 3th decad
     * in October
     * 
     * @param month must by a short name of the month in english (@see
     *        {@link DecMonth})
     * @param decadInMonth must be 1, 2 or 3
     * @return the value for s_dec
     * @throws CSVProcessException if <code>month</code> or <code>decadInMonth</code>
     *         have incorrect values
     */
    public static Integer getDecad(String month, Integer decadInMonth) throws CSVProcessException {
        return getDecad(getDecMonth(month), decadInMonth);
    }

    /**
     * Obtain the s_dec in the year. <br />
     * The s_dec is 1 -- 36 , 1 is the first decade in November 36 is the 3th decad
     * in October
     * 
     * @param month
     * @param decadInMonth must be 1, 2 or 3
     * @return the value for s_dec
     * @throws CSVProcessException if <code>month</code> or <code>decadInMonth</code>
     *         have incorrect values
     */
    public static Integer getDecad(DecMonth month, Integer decadInMonth) throws CSVProcessException {
        if (month != null && decadInMonth != null && decadInMonth > 0 && decadInMonth < 4) {
            return decadInMonth + month.ordinal() * 3;
        } else {
            throw new CSVProcessException("Incorrect decad [month=" + month + ", decad=" + decadInMonth + "]");
        }
    }

    /**
     * Obtain DecMonth for a string
     * 
     * @param month short name of the month (like Nov, NOV or nov for November)
     * @return DecMonth
     * @throws CSVProcessException if <code>month</code> it's a unrecognized string
     *         or null
     */
    public static DecMonth getDecMonth(String month) throws CSVProcessException {
        if (month != null) {
            // Obtain DecMonth for a string
            String monthUpper = month.toUpperCase();
            for (DecMonth dec : DecMonth.values()) {
                if (dec.name().equals(monthUpper)) {
                    return dec;
                }
            }
        }
        // Incorrect moth
        throw new CSVProcessException("Incorrect month=" + month);
    }

    /**
     * Obtain a double value of a string or null if it's null or empty
     * 
     * @param doubleString
     * @return Double value
     * @throws CSVProcessException if <code>doubleString</code> it's not a double
     */
    public static Double getDoubleValue(String doubleString) throws CSVProcessException {
        try {
            return doubleString != null && StringUtils.hasText(doubleString) ? Double.parseDouble(doubleString)
                    : null;
        } catch (NumberFormatException nfe) {
            throw new CSVProcessException("Incorrect double=" + doubleString);
        }
    }

    /**
     * Parse a csv property as known type
     * 
     * @param origin
     * @param type
     * @return
     * @throws Exception
     */
    public static Object parse(String origin, CSVPropertyType type) throws Exception {
        switch (type) {
        case INTEGER:
            return Integer.parseInt(origin);
        case DOUBLE:
            return CSVIngestUtils.getDoubleValue(origin);
        case IGNORE:
            return null;
        default:
            return origin;
        }
    }

}