| 1 | /* |
| 2 | * Copyright (c) 2005-2012, 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.util.parser; |
| 19 | |
| 20 | import org.wso2.siddhi.core.exception.OperationNotSupportedException; |
| 21 | import org.wso2.siddhi.core.projector.attibute.aggregator.Aggregator; |
| 22 | import org.wso2.siddhi.core.projector.attibute.aggregator.max.MaxAggregatorDouble; |
| 23 | import org.wso2.siddhi.core.projector.attibute.aggregator.max.MaxAggregatorFloat; |
| 24 | import org.wso2.siddhi.core.projector.attibute.aggregator.max.MaxAggregatorInt; |
| 25 | import org.wso2.siddhi.core.projector.attibute.aggregator.max.MaxAggregatorLong; |
| 26 | import org.wso2.siddhi.core.projector.attibute.aggregator.min.MinAggregatorDouble; |
| 27 | import org.wso2.siddhi.core.projector.attibute.aggregator.min.MinAggregatorFloat; |
| 28 | import org.wso2.siddhi.core.projector.attibute.aggregator.min.MinAggregatorInt; |
| 29 | import org.wso2.siddhi.core.projector.attibute.aggregator.min.MinAggregatorLong; |
| 30 | import org.wso2.siddhi.core.projector.attibute.aggregator.sum.SumAggregatorDouble; |
| 31 | import org.wso2.siddhi.core.projector.attibute.aggregator.sum.SumAggregatorFloat; |
| 32 | import org.wso2.siddhi.core.projector.attibute.aggregator.sum.SumAggregatorInt; |
| 33 | import org.wso2.siddhi.core.projector.attibute.aggregator.sum.SumAggregatorLong; |
| 34 | import org.wso2.siddhi.core.projector.attibute.generator.AbstractAggregateAttributeGenerator; |
| 35 | import org.wso2.siddhi.core.util.*; |
| 36 | import org.wso2.siddhi.query.api.definition.Attribute; |
| 37 | |
| 38 | public class AggregatorParser { |
| 39 | |
| 40 | |
| 41 | public static AbstractAggregateAttributeGenerator loadAggregatorClass(String aggregationName) { |
| 42 | return (AbstractAggregateAttributeGenerator) org.wso2.siddhi.core.util.ClassLoader.loadClass("org.wso2.siddhi.core.projector.attibute.generator." + aggregationName.substring(0, 1).toUpperCase() + aggregationName.substring(1) + "AggregateAttributeGenerator"); |
| 43 | } |
| 44 | |
| 45 | public static Aggregator createSumAggregator(Attribute.Type type) { |
| 46 | switch (type) { |
| 47 | case STRING: |
| 48 | throw new OperationNotSupportedException("Sum not supported for string"); |
| 49 | case INT: |
| 50 | return new SumAggregatorInt(); |
| 51 | case LONG: |
| 52 | return new SumAggregatorLong(); |
| 53 | case FLOAT: |
| 54 | return new SumAggregatorFloat(); |
| 55 | case DOUBLE: |
| 56 | return new SumAggregatorDouble(); |
| 57 | case BOOL: |
| 58 | throw new OperationNotSupportedException("Sum not supported for bool"); |
| 59 | } |
| 60 | throw new OperationNotSupportedException("Sum not supported for " + type); |
| 61 | } |
| 62 | |
| 63 | public static Aggregator createAvgAggregator(Attribute.Type type) { |
| 64 | switch (type) { |
| 65 | case STRING: |
| 66 | throw new OperationNotSupportedException("Avg not supported for string"); |
| 67 | case INT: |
| 68 | return new SumAggregatorInt(); |
| 69 | case LONG: |
| 70 | return new SumAggregatorLong(); |
| 71 | case FLOAT: |
| 72 | return new SumAggregatorFloat(); |
| 73 | case DOUBLE: |
| 74 | return new SumAggregatorDouble(); |
| 75 | case BOOL: |
| 76 | throw new OperationNotSupportedException("Avg not supported for bool"); |
| 77 | } |
| 78 | throw new OperationNotSupportedException("Avg not supported for " + type); |
| 79 | } |
| 80 | |
| 81 | public static Aggregator createMaxAggregator(Attribute.Type type) { |
| 82 | switch (type) { |
| 83 | case STRING: |
| 84 | throw new OperationNotSupportedException("Max not supported for string"); |
| 85 | case INT: |
| 86 | return new MaxAggregatorInt(); |
| 87 | case LONG: |
| 88 | return new MaxAggregatorLong(); |
| 89 | case FLOAT: |
| 90 | return new MaxAggregatorFloat(); |
| 91 | case DOUBLE: |
| 92 | return new MaxAggregatorDouble(); |
| 93 | case BOOL: |
| 94 | throw new OperationNotSupportedException("Max not supported for bool"); |
| 95 | } |
| 96 | throw new OperationNotSupportedException("Max not supported for " + type); |
| 97 | } |
| 98 | |
| 99 | |
| 100 | public static Aggregator createMinAggregator(Attribute.Type type) { |
| 101 | switch (type) { |
| 102 | case STRING: |
| 103 | throw new OperationNotSupportedException("Min not supported for string"); |
| 104 | case INT: |
| 105 | return new MinAggregatorInt(); |
| 106 | case LONG: |
| 107 | return new MinAggregatorLong(); |
| 108 | case FLOAT: |
| 109 | return new MinAggregatorFloat(); |
| 110 | case DOUBLE: |
| 111 | return new MinAggregatorDouble(); |
| 112 | case BOOL: |
| 113 | throw new OperationNotSupportedException("Min not supported for bool"); |
| 114 | } |
| 115 | throw new OperationNotSupportedException("Min not supported for " + type); |
| 116 | } |
| 117 | } |