| 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.sequence; |
| 19 | |
| 20 | import org.wso2.siddhi.query.api.stream.SingleStream; |
| 21 | import org.wso2.siddhi.query.api.stream.sequence.element.NextElement; |
| 22 | import org.wso2.siddhi.query.api.stream.sequence.element.OrElement; |
| 23 | import org.wso2.siddhi.query.api.stream.sequence.element.RegexElement; |
| 24 | import org.wso2.siddhi.query.api.stream.sequence.element.SequenceElement; |
| 25 | import org.wso2.siddhi.query.api.utils.SiddhiConstants; |
| 26 | |
| 27 | public class Sequence { |
| 28 | |
| 29 | |
| 30 | public static SequenceElement or(SingleStream singleStream1, |
| 31 | SingleStream singleStream2) { |
| 32 | return new OrElement(singleStream1, singleStream2); |
| 33 | } |
| 34 | |
| 35 | // public static SequenceElement count(SingleStream singleStream, int min, int max) { |
| 36 | // singleStream.setCounterStream(true); |
| 37 | // return new RegexElement(singleStream, min, max); |
| 38 | // } |
| 39 | |
| 40 | public static SequenceElement next(SequenceElement sequenceElement, |
| 41 | SequenceElement nextSequenceElement) { |
| 42 | return new NextElement(sequenceElement, nextSequenceElement); |
| 43 | } |
| 44 | |
| 45 | public static SequenceElement zeroOrMany(SingleStream singleStream) { |
| 46 | return new RegexElement(singleStream, 0, SiddhiConstants.UNLIMITED); |
| 47 | } |
| 48 | |
| 49 | public static SequenceElement zeroOrOne(SingleStream singleStream) { |
| 50 | return new RegexElement(singleStream, 0, 1); |
| 51 | |
| 52 | } |
| 53 | |
| 54 | public static SequenceElement oneOrMany(SingleStream singleStream) { |
| 55 | return new RegexElement(singleStream, 1, SiddhiConstants.UNLIMITED); |
| 56 | |
| 57 | } |
| 58 | } |