/**
 * Copyright (C) 2014-2016 LinkedIn Corp. (pinot-core@linkedin.com)
 *
 * 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.linkedin.pinot.core.query.config;

import org.apache.commons.configuration.Configuration;
import org.apache.commons.configuration.ConfigurationException;


/**
 * Config for QueryPlanner.
 *
 *
 */
public class QueryPlannerConfig {

  private Configuration _queryPlannerConfig;
  private static String[] REQUIRED_KEYS = {};

  public QueryPlannerConfig(Configuration queryPlannerConfig) throws ConfigurationException {
    _queryPlannerConfig = queryPlannerConfig;
    checkRequiredKeys();
  }

  private void checkRequiredKeys() throws ConfigurationException {
    for (String keyString : REQUIRED_KEYS) {
      if (!_queryPlannerConfig.containsKey(keyString)) {
        throw new ConfigurationException("Cannot find required key : " + keyString);
      }
    }
  }

  public String getQueryPlannerType() {
    return _queryPlannerConfig.getString("type");
  }
}