Application: gvSIG desktop

package org.gvsig.timesupport.impl.coercion;

import java.text.DateFormat;

import java.text.ParseException;

import java.util.Date;

import java.util.Locale;

import org.apache.commons.lang3.math.NumberUtils;

import org.gvsig.timesupport.RelativeInstant;

import org.gvsig.timesupport.TimeSupportLocator;

import org.gvsig.timesupport.TimeSupportManager;

import org.gvsig.tools.dataTypes.CoercionException;

import org.gvsig.tools.dataTypes.DataTypesManager.CoercionWithLocale;

/**

 *

 * @author jjdelcerro

 */

public class CoerceToInstant implements CoercionWithLocale {

    public CoerceToInstant() {

    }

    @Override

    public Object coerce(Object o) throws CoercionException {

        return this.coerce(o, null);

    }

    public Object coerce(Object o, Locale locale) throws CoercionException {

        if( o == null ) {

            return null;

        }

        if( o instanceof RelativeInstant ) {

            return o;

        }

        TimeSupportManager manager = TimeSupportLocator.getManager();

        if( o instanceof Date ) {

            RelativeInstant instant = manager.createRelativeInstant((Date)o);

            return instant;

        }

        if( o instanceof Number ) {

            RelativeInstant instant = manager.createRelativeInstant( ((Number)o).longValue());

            return instant;

        }

        if( o instanceof String ) {

            long milis_l = NumberUtils.toLong((String) o, Long.MIN_VALUE);

            if( milis_l != Long.MIN_VALUE ) {

                RelativeInstant instant = manager.createRelativeInstant(milis_l);

                return instant;

            }

            double milis_d = NumberUtils.toDouble((String) o, Double.NaN);

            if( milis_d != Double.NaN ) {

                RelativeInstant instant = manager.createRelativeInstant((long)milis_d);

                return instant;

            }

            DateFormat df = DateFormat.getDateTimeInstance(

                    DateFormat.DEFAULT,

                    DateFormat.DEFAULT,

                    locale==null? Locale.getDefault():locale

            );

            try {

                Date date = df.parse((String) o);

                RelativeInstant instant = manager.createRelativeInstant(date);

                return instant;

            } catch (ParseException ex) {

            }

        }

        throw new CoercionException("Can't coerce ("+o.getClass().getSimpleName()+") '"+o.toString()+"' to Instant.");

    }

}