BaseDateFormatHolder.java

/**
 * $Id: BaseDateFormatHolder.java 2 2008-10-01 10:04:26Z azeckoski $
 * $URL: http://reflectutils.googlecode.com/svn/trunk/src/main/java/org/azeckoski/reflectutils/converters/BaseDateFormatHolder.java $
 * BaseDateFormatHolder.java - genericdao - Sep 8, 2008 2:15:02 PM - azeckoski
 **************************************************************************
 * Copyright (c) 2008 Aaron Zeckoski
 * Licensed under the Apache License, Version 2.0
 * 
 * A copy of the Apache License has been included in this 
 * distribution and is available at: http://www.apache.org/licenses/LICENSE-2.0.txt
 *
 * Aaron Zeckoski (azeckoski @ gmail.com) (aaronz @ vt.edu) (aaron @ caret.cam.ac.uk)
 */

package org.azeckoski.reflectutils.converters;

import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.ArrayList;


/**
 * Simple class to add in support for controlling the formats to
 * use when parsing the various dates
 * 
 * @author Aaron Zeckoski (azeckoski @ gmail.com)
 */
public class BaseDateFormatHolder {

    public BaseDateFormatHolder() {}

    /**
     * @param patterns set the patterns to use when parsing strings to dates
     */
    public BaseDateFormatHolder(String[] patterns) {
        setPatterns(patterns);
    }

    /**
     * @param formats the formats to use when parsing strings into dates
     */
    public BaseDateFormatHolder(DateFormat[] formats) {
        setFormats(formats);
    }

    protected DateFormat[] formats;
    /**
     * @param formats sets the format objects to use for parsing
     */
    public void setFormats(DateFormat[] formats) {
        this.formats = formats;
    }
    protected String[] patterns;
    /**
     * @param patterns set the patterns to use for parsing
     */
    public void setPatterns(String[] patterns) {
        this.patterns = patterns;
        getDateFormats();
    }
//    = new String[] {
//            "yyyy-MM-dd HH:mm:ss.fffffffff",
//            "yyyy-MM-dd",
//            "HH:mm:ss"
//    };
    /**
     * @return the array of date formats currently used by this converter
     */
    public DateFormat[] getDateFormats() {
        if (formats == null) {
            ArrayList<DateFormat> dateFormats = new ArrayList<DateFormat>();
            // add the standard short ones
//            dateFormats.add( DateFormat.getDateInstance(DateFormat.SHORT) );
//            dateFormats.add( DateFormat.getTimeInstance(DateFormat.SHORT) );
//            dateFormats.add( DateFormat.getDateTimeInstance(DateFormat.SHORT, DateFormat.SHORT) );
            if (patterns != null) {
                for (int i = 0; i < patterns.length; i++) {
                    dateFormats.add( new SimpleDateFormat(patterns[i]) );
                }
            }
            formats = dateFormats.toArray(new DateFormat[dateFormats.size()]);
        }
        return formats;
    }

}