| 1 | /* |
| 2 | * Copyright (c) 2005-2010, WSO2 Inc. (http://www.wso2.org) All Rights Reserved. |
| 3 | * |
| 4 | * WSO2 Inc. licenses this file to you under the Apache License, |
| 5 | * Version 2.0 (the "License"); you may not use this file except |
| 6 | * in compliance with the License. |
| 7 | * You may obtain a copy of the License at |
| 8 | * |
| 9 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 10 | * |
| 11 | * Unless required by applicable law or agreed to in writing, |
| 12 | * software distributed under the License is distributed on an |
| 13 | * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| 14 | * KIND, either express or implied. See the License for the |
| 15 | * specific language governing permissions and limitations |
| 16 | * under the License. |
| 17 | */ |
| 18 | package org.wso2.siddhi.core.stream; |
| 19 | |
| 20 | import org.wso2.siddhi.core.event.StreamEvent; |
| 21 | import org.wso2.siddhi.core.stream.recevier.StreamReceiver; |
| 22 | import org.wso2.siddhi.query.api.definition.StreamDefinition; |
| 23 | |
| 24 | import java.util.List; |
| 25 | import java.util.concurrent.CopyOnWriteArrayList; |
| 26 | |
| 27 | public class StreamJunction { |
| 28 | List<StreamReceiver> streamReceivers =new CopyOnWriteArrayList<StreamReceiver>(); |
| 29 | private StreamDefinition streamDefinition; |
| 30 | private int streamReceiversSize; |
| 31 | |
| 32 | public void send(StreamEvent streamEvent) throws InterruptedException { |
| 33 | //in reverse order to execute the later states first to overcome to dependencies of count states |
| 34 | for (int i = streamReceiversSize-1; i>=0; i--) { |
| 35 | StreamReceiver streamReceiver = streamReceivers.get(i); |
| 36 | streamReceiver.receive(streamEvent); |
| 37 | } |
| 38 | } |
| 39 | |
| 40 | public StreamJunction(StreamDefinition streamDefinition) { |
| 41 | this.streamDefinition = streamDefinition; |
| 42 | } |
| 43 | |
| 44 | public void addEventFlow(StreamReceiver streamReceiver) { |
| 45 | streamReceivers.add(streamReceiver); |
| 46 | streamReceiversSize = streamReceivers.size(); |
| 47 | } |
| 48 | } |