iciql/src/main/java/com/iciql/adapter/postgresql/JsonbObjectAdapter.java

/*
 * Copyright 2014 James Moger.
 *
 * 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 com.iciql.adapter.postgresql;

import com.iciql.adapter.GsonTypeAdapter;
import org.postgresql.util.PGobject;

import java.sql.SQLException;

/**
 * Postgres JSONB data type adapter maps a JSONB column to a domain object using
 * Google GSON.
 *
 * @param <T>
 * @author James Moger
 */
public abstract class JsonbObjectAdapter<T> extends GsonTypeAdapter<T> {

    @Override
    public String getDataType() {
        return "jsonb";
    }

    @Override
    public Object serialize(T value) {

        String json = gson().toJson(value);
        PGobject pg = new PGobject();
        pg.setType(getDataType());
        try {
            pg.setValue(json);
        } catch (SQLException e) {
            // not thrown on base PGobject
        }
        return pg;
    }
}