SerializerFactory.java

/*
 * Copyright 2014 University of Southern California
 *
 * 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 edu.usc.pgroup.floe.serialization;

import edu.usc.pgroup.floe.config.ConfigProperties;
import edu.usc.pgroup.floe.config.FloeConfig;
import edu.usc.pgroup.floe.utils.Utils;

/**
 * The serializer factory which initializes the defined tuple serializer.
 * @author kumbhare
 */
public final class SerializerFactory {

    /**
     * Hiding the default constructor.
     */
    private SerializerFactory() {

    }

    /**
     * @return a new instance of the serializer defined in the config file.
     */
    public static TupleSerializer getSerializer() {
        String serializerClass = FloeConfig.getConfig().getString(
                ConfigProperties.TUPLE_SERIALIZER);

        String pluginJar = FloeConfig.getConfig().getString(
                ConfigProperties.FLOE_PLUGIN_JAR);

        ClassLoader loader = null;
        if (pluginJar != null && !pluginJar.isEmpty()) {
            loader = Utils.getClassLoader(pluginJar,
                    ClassLoader.getSystemClassLoader());
        }

        TupleSerializer serializer = (TupleSerializer) Utils.
                instantiateObject(serializerClass, loader);

        return serializer;
    }
}