org.hibernate.ogm.datastore.redis.impl.json.JsonSerializationStrategy.java Source code

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Here is the source code for org.hibernate.ogm.datastore.redis.impl.json.JsonSerializationStrategy.java

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/*
 * Hibernate OGM, Domain model persistence for NoSQL datastores
 *
 * License: GNU Lesser General Public License (LGPL), version 2.1 or later
 * See the lgpl.txt file in the root directory or <http://www.gnu.org/licenses/lgpl-2.1.html>.
 */
package org.hibernate.ogm.datastore.redis.impl.json;

import java.io.IOException;

import org.hibernate.ogm.datastore.redis.impl.SerializationStrategy;
import org.hibernate.ogm.type.spi.GridType;
import org.hibernate.type.Type;

import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;

/**
 * Serialize payload as JSON using the Jackson Mapper.
 *
 * @author Mark Paluch
 */
public class JsonSerializationStrategy implements SerializationStrategy {

    private static final String NULL = "null";
    private final ObjectMapper objectMapper;

    public JsonSerializationStrategy() {
        this.objectMapper = new ObjectMapper().configure(JsonParser.Feature.ALLOW_SINGLE_QUOTES, true);
    }

    @Override
    public <T> T deserialize(String serialized, Class<T> targetType) {

        if (serialized == null || serialized.length() == 0 || NULL.equals(serialized)) {
            return null;
        }

        try {
            JsonParser parser = objectMapper.reader().getFactory().createParser(serialized);
            return objectMapper.reader().readValue(parser, targetType);
        } catch (IOException e) {
            throw new IllegalStateException(e);
        }
    }

    @Override
    public String serialize(Object payload) {
        try {
            return objectMapper.writer().writeValueAsString(payload);
        } catch (JsonProcessingException e) {
            throw new IllegalStateException(e);
        }
    }

    @Override
    public GridType overrideType(Type type) {
        return RedisJsonTypeConverter.INSTANCE.convert(type);
    }
}