spark JavaPairInputDStream 源码
spark JavaPairInputDStream 代码
文件路径：/streaming/src/main/scala/org/apache/spark/streaming/api/java/JavaPairInputDStream.scala
/*
* 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.spark.streaming.api.java
import scala.language.implicitConversions
import scala.reflect.ClassTag
import org.apache.spark.streaming.dstream.InputDStream
/**
* A Java-friendly interface to [[org.apache.spark.streaming.dstream.InputDStream]] of
* key-value pairs.
*/
class JavaPairInputDStream[K, V](val inputDStream: InputDStream[(K, V)])(
implicit val kClassTag: ClassTag[K], implicit val vClassTag: ClassTag[V]
) extends JavaPairDStream[K, V](inputDStream) {
}
object JavaPairInputDStream {
/**
* Convert a scala [[org.apache.spark.streaming.dstream.InputDStream]] of pairs to a
* Java-friendly [[org.apache.spark.streaming.api.java.JavaPairInputDStream]].
*/
implicit def fromInputDStream[K: ClassTag, V: ClassTag](
inputDStream: InputDStream[(K, V)]): JavaPairInputDStream[K, V] = {
new JavaPairInputDStream[K, V](inputDStream)
}
}
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