JsonCalendarDeserializerAdapter.java

package no.niths.domain.adapter;

import java.io.IOException;
import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.GregorianCalendar;

import no.niths.application.rest.exception.CustomParseException;
import no.niths.common.constants.MiscConstants;

import org.codehaus.jackson.JsonParser;
import org.codehaus.jackson.JsonProcessingException;
import org.codehaus.jackson.map.DeserializationContext;
import org.codehaus.jackson.map.JsonDeserializer;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
 * Class JsonCalendarDeserializerAdapter used too parse a String too a Calendar
 */
public class JsonCalendarDeserializerAdapter extends JsonDeserializer<Calendar> {

    private Logger logger = LoggerFactory
            .getLogger(JsonCalendarDeserializerAdapter.class);
    private DateFormat df = new SimpleDateFormat(MiscConstants.CALENDAR_FORMAT);

    @Override
    public Calendar deserialize(JsonParser jp, DeserializationContext ctxt)
            throws IOException, JsonProcessingException { 
        Calendar calendar = new GregorianCalendar();        
        try {
            logger.debug("calendarDezerializer is entred" + jp.getText());
            calendar.setTime(df.parse(jp.getText()));
            
        } catch (ParseException px) {
            logger.error(px.getMessage(),px);
            throw new CustomParseException("Invalid syntacs! Valid syntax : "
                    + MiscConstants.CALENDAR_FORMAT + " ErrorOffset:"
                    + px.getErrorOffset());
        }
        return calendar;
    }
}