| /* |
| * 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.gearpump.akkastream.module |
| |
| import akka.stream._ |
| import akka.stream.impl.StreamLayout.{AtomicModule, Module} |
| |
| |
| /** |
| * |
| * Group the T value groupBy function |
| * |
| * @param groupBy T => Group |
| * @param attributes Attributes |
| * @tparam T type |
| * @tparam Group type |
| */ |
| case class GroupByModule[T, Group](groupBy: T => Group, |
| attributes: Attributes = Attributes.name("groupByModule")) |
| extends AtomicModule { |
| val inPort = Inlet[T]("GroupByModule.in") |
| val outPort = Outlet[T]("GroupByModule.out") |
| override val shape = new FlowShape(inPort, outPort) |
| |
| override def replaceShape(s: Shape): Module = if (s != shape) { |
| throw new UnsupportedOperationException("cannot replace the shape of a FlowModule") |
| } else { |
| this |
| } |
| |
| override def carbonCopy: Module = newInstance |
| |
| protected def newInstance: GroupByModule[T, Group] = |
| new GroupByModule[T, Group](groupBy, attributes) |
| |
| override def withAttributes(attributes: Attributes): GroupByModule[T, Group] = { |
| new GroupByModule[T, Group](groupBy, attributes) |
| } |
| } |