/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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 org.apache.kylin.query.implicits

import org.apache.spark.sql.{KylinDataFrameManager, SparkSession}
import org.apache.spark.sql.execution.datasource.KylinSourceStrategy

class QueryContext(session: SparkSession) {
  def kylin: KylinDataFrameManager = {
    // check that index strategy is included
    val strategies = session.experimental.extraStrategies
    if (!strategies.contains(KylinSourceStrategy)) {
      session.experimental.extraStrategies = strategies :+ KylinSourceStrategy
    }

    new KylinDataFrameManager(session)
  }
}

/** Implicit methods */
package object implicits {
  implicit def sessionToQueryContext(session: SparkSession): QueryContext = {
    new QueryContext(session)
  }
}