| 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.projector.attibute.aggregator.sum; |
| 19 | |
| 20 | import org.wso2.siddhi.core.projector.attibute.aggregator.Aggregator; |
| 21 | import org.wso2.siddhi.query.api.definition.Attribute; |
| 22 | |
| 23 | public class SumAggregatorInt implements Aggregator { |
| 24 | |
| 25 | private long value = 0L; |
| 26 | private Attribute.Type type = Attribute.Type.LONG; |
| 27 | |
| 28 | public Object getValue() { |
| 29 | return value; |
| 30 | } |
| 31 | |
| 32 | public Attribute.Type getType() { |
| 33 | return this.type; |
| 34 | } |
| 35 | |
| 36 | @Override |
| 37 | public Object add(Object obj) { |
| 38 | value += ((Integer) obj).longValue(); |
| 39 | return value; |
| 40 | } |
| 41 | |
| 42 | @Override |
| 43 | public Object remove(Object obj) { |
| 44 | value -= ((Integer) obj).longValue(); |
| 45 | return value; |
| 46 | } |
| 47 | |
| 48 | @Override |
| 49 | public Aggregator createNewInstance() { |
| 50 | return new SumAggregatorInt(); |
| 51 | } |
| 52 | } |