org.emmalanguage.api.flink.package.scala Maven / Gradle / Ivy
/*
* Copyright © 2014 TU Berlin ([email protected])
*
* 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 org.emmalanguage
package api
import org.apache.flink.api.scala.DataSet
import org.apache.flink.api.scala.{ExecutionEnvironment => FlinkEnv}
package object flink {
import FlinkDataSet.typeInfoForType
import Meta.Projections.ctagFor
implicit def fromDataSet[A](
implicit flink: FlinkEnv, m: Meta[A]
): DataSet[A] => DataBag[A] = new FlinkDataSet(_)
implicit def toDataSet[A](
implicit flink: FlinkEnv, m: Meta[A]
): DataBag[A] => DataSet[A] = {
case bag: FlinkDataSet[A] =>
bag.rep
case bag: ScalaSeq[A] =>
flink.fromCollection(bag.rep)
case bag =>
throw new RuntimeException(s"Cannot convert a DataBag of type ${bag.getClass.getSimpleName} to a Flink DataSet")
}
}