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CQL implementation for Achilles using Datastax Java driver

There is a newer version: 6.1.0

/*
 * Copyright (C) 2012-2014 DuyHai DOAN
 *
 *  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 info.archinnov.achilles.internal.utils;

import java.util.LinkedHashMap;
import java.util.Map;
import com.google.common.base.Supplier;
import info.archinnov.achilles.configuration.ConfigurationParameters;

public class ConfigMap extends LinkedHashMap {

    private static final long serialVersionUID = 1L;

    public static ConfigMap fromMap(Map source) {
        ConfigMap configMap = new ConfigMap();
        configMap.addAll(source);
        return configMap;
    }

    @SuppressWarnings("unchecked")
    public  T getTyped(ConfigurationParameters key) {
        T value = null;
        if (super.containsKey(key) && super.get(key) != null) {
            value = (T) super.get(key);
            return value;
        }
        return value;
    }

    public  T getTypedOr(ConfigurationParameters key, T defaultValue) {
        if (super.containsKey(key)) {
            return getTyped(key);
        } else {
            return defaultValue;
        }
    }

    public  T getTypedOr(ConfigurationParameters key, Supplier defaultValue) {
        if (super.containsKey(key)) {
            return getTyped(key);
        } else {
            return defaultValue.get();
        }
    }

    private void addAll(Map source) {
        for (Map.Entry entry : source.entrySet()) {
            super.put(entry.getKey(), entry.getValue());
        }
    }
}