de.undercouch.bson4jackson.deserializers.BsonCalendarDeserializer.java Source code

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Here is the source code for de.undercouch.bson4jackson.deserializers.BsonCalendarDeserializer.java

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// Copyright 2010-2014 Michel Kraemer
//
// 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 de.undercouch.bson4jackson.deserializers;

import java.io.IOException;
import java.util.Calendar;
import java.util.Date;

import com.fasterxml.jackson.core.JsonToken;
import com.fasterxml.jackson.databind.DeserializationContext;

import de.undercouch.bson4jackson.BsonConstants;
import de.undercouch.bson4jackson.BsonParser;

/**
 * Deserializes BSON date type objects to calendars
 * @author Michel Kraemer
 * @since 2.3.2
 */
public class BsonCalendarDeserializer extends BsonDeserializer<Calendar> {
    @Override
    public Calendar deserialize(BsonParser bsonParser, DeserializationContext ctxt) throws IOException {
        if (bsonParser.getCurrentToken() != JsonToken.VALUE_EMBEDDED_OBJECT
                || bsonParser.getCurrentBsonType() != BsonConstants.TYPE_DATETIME) {
            ctxt.mappingException(Date.class);
        }

        Object obj = bsonParser.getEmbeddedObject();
        if (obj == null) {
            return null;
        }

        Calendar cal = Calendar.getInstance();
        cal.setTime((Date) obj);
        return cal;
    }
}