| 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.query.api.stream; |
| 19 | |
| 20 | import org.wso2.siddhi.query.api.query.QueryEventStream; |
| 21 | import org.wso2.siddhi.query.api.condition.Condition; |
| 22 | import org.wso2.siddhi.query.api.definition.StreamDefinition; |
| 23 | import org.wso2.siddhi.query.api.stream.handler.Handler; |
| 24 | import org.wso2.siddhi.query.api.stream.pattern.element.PatternElement; |
| 25 | import org.wso2.siddhi.query.api.stream.sequence.element.SequenceElement; |
| 26 | |
| 27 | import java.util.ArrayList; |
| 28 | import java.util.List; |
| 29 | import java.util.Map; |
| 30 | |
| 31 | public class SingleStream implements Stream, SequenceElement, PatternElement { |
| 32 | |
| 33 | protected String streamId; |
| 34 | protected StreamDefinition streamDefinition; |
| 35 | protected String streamReferenceId; |
| 36 | protected List<Handler> handlerList = new ArrayList<Handler>(); |
| 37 | protected boolean isCounterStream = false; |
| 38 | |
| 39 | protected SingleStream(String streamId) { |
| 40 | this(streamId, streamId); |
| 41 | } |
| 42 | |
| 43 | public SingleStream(String streamReferenceId, String streamId) { |
| 44 | this.streamId = streamId; |
| 45 | this.streamReferenceId = streamReferenceId; |
| 46 | } |
| 47 | |
| 48 | public SingleStream handler(Handler.Type type, String name, Object... parameters) { |
| 49 | handlerList.add(new Handler(name, type, parameters)); |
| 50 | return this; |
| 51 | } |
| 52 | |
| 53 | public SingleStream addHandler(Handler handler) { |
| 54 | handlerList.add(handler); |
| 55 | return this; |
| 56 | } |
| 57 | |
| 58 | public String getStreamId() { |
| 59 | return streamId; |
| 60 | } |
| 61 | |
| 62 | public String getStreamReferenceId() { |
| 63 | return streamReferenceId; |
| 64 | } |
| 65 | |
| 66 | public SingleStream setStreamReferenceId(String streamReferenceId) { |
| 67 | this.streamReferenceId = streamReferenceId; |
| 68 | return this; |
| 69 | } |
| 70 | |
| 71 | public List<Handler> getHandlerList() { |
| 72 | return handlerList; |
| 73 | } |
| 74 | |
| 75 | public SingleStream handler(Condition filterCondition) { |
| 76 | handlerList.add(new Handler(null, Handler.Type.FILTER, new Object[]{filterCondition})); |
| 77 | return this; |
| 78 | } |
| 79 | |
| 80 | @Override |
| 81 | public List<String> getStreamIds() { |
| 82 | List<String> list = new ArrayList<String>(); |
| 83 | list.add(streamId); |
| 84 | return list; |
| 85 | } |
| 86 | |
| 87 | public void setCounterStream(boolean counterStream) { |
| 88 | isCounterStream = counterStream; |
| 89 | } |
| 90 | |
| 91 | @Override |
| 92 | public List<QueryEventStream> constructQueryEventStreamList( |
| 93 | Map<String, StreamDefinition> streamDefinitionMap, |
| 94 | List<QueryEventStream> queryEventStreams) { |
| 95 | streamDefinition = streamDefinitionMap.get(streamId); |
| 96 | QueryEventStream queryEventStream = new QueryEventStream(streamId, streamReferenceId, streamDefinition); |
| 97 | queryEventStream.setCounterStream(isCounterStream); |
| 98 | queryEventStreams.add(queryEventStream); |
| 99 | return queryEventStreams; |
| 100 | } |
| 101 | |
| 102 | |
| 103 | } |