streaming.udf.RuntimeCompileUDAF.scala Maven / Gradle / Ivy
The newest version!
/*
* 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 streaming.udf
import org.apache.spark.sql.catalyst.expressions.Expression
import org.apache.spark.sql.execution.aggregate.ScalaUDAF
import org.apache.spark.sql.expressions.UserDefinedAggregateFunction
import streaming.dsl.mmlib.algs.ScriptUDFCacheKey
/**
* Created by fchen on 2018/11/15.
*/
trait RuntimeCompileUDAF extends RuntimeCompileScriptInterface[UserDefinedAggregateFunction] {
def udaf(e: Seq[Expression], scriptCacheKey: ScriptUDFCacheKey): ScalaUDAF = {
ScalaUDAF(e, generateFunction(scriptCacheKey))
}
}