| /* |
| * 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.samza.operators.spec; |
| |
| import org.apache.samza.operators.functions.FlatMapFunction; |
| |
| /** |
| * The common spec for a simple stream operator that outputs 0 or more messages for each input message. |
| * |
| * @param <M> the type of input message |
| * @param <OM> the type of output message |
| */ |
| public abstract class StreamOperatorSpec<M, OM> extends OperatorSpec<M, OM> { |
| |
| protected final FlatMapFunction<M, OM> transformFn; |
| |
| /** |
| * Constructor for a {@link StreamOperatorSpec}. |
| * |
| * @param transformFn the transformation function |
| * @param opCode the {@link OpCode} for this {@link StreamOperatorSpec} |
| * @param opId the unique ID for this {@link StreamOperatorSpec} |
| */ |
| protected StreamOperatorSpec(FlatMapFunction<M, OM> transformFn, OperatorSpec.OpCode opCode, String opId) { |
| super(opCode, opId); |
| this.transformFn = transformFn; |
| } |
| |
| public FlatMapFunction<M, OM> getTransformFn() { |
| return this.transformFn; |
| } |
| |
| } |