| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| <@pp.dropOutputFile /> |
| |
| <#list allDataTypes.types as type> |
| |
| <#assign className = "AbstractVariation${type.dataType?cap_first}Window"> |
| <@pp.changeOutputFile name="/org/apache/iotdb/db/queryengine/execution/operator/window/${className}.java" /> |
| package org.apache.iotdb.db.queryengine.execution.operator.window; |
| |
| import org.apache.tsfile.block.column.Column; |
| <#if type.dataType == "Binary"> |
| import org.apache.tsfile.utils.Binary; |
| </#if> |
| |
| /* |
| * This class is generated using freemarker and the ${.template_name} template. |
| */ |
| public abstract class ${className} extends AbstractVariationWindow { |
| |
| protected ${type.dataType} headValue; |
| |
| private ${type.dataType} previousValue; |
| |
| public ${className}(VariationWindowParameter variationWindowParameter) { |
| super(variationWindowParameter); |
| } |
| |
| @Override |
| public void updatePreviousValue() { |
| previousValue = headValue; |
| } |
| |
| @Override |
| public void mergeOnePoint(Column[] controlTimeAndValueColumn, int index) { |
| long currentTime = controlTimeAndValueColumn[1].getLong(index); |
| // judge whether we need update startTime |
| if (startTime > currentTime) { |
| startTime = currentTime; |
| } |
| // judge whether we need update endTime |
| if (endTime < currentTime) { |
| endTime = currentTime; |
| } |
| // judge whether we need initialize eventValue |
| if (!initializedHeadValue) { |
| startTime = currentTime; |
| endTime = currentTime; |
| if(controlTimeAndValueColumn[0].isNull(index)){ |
| valueIsNull = true; |
| }else{ |
| valueIsNull = false; |
| headValue = controlTimeAndValueColumn[0].get${type.dataType?cap_first}(index); |
| } |
| initializedHeadValue = true; |
| } |
| } |
| |
| public ${type.dataType} getHeadValue() { |
| return headValue; |
| } |
| |
| public ${type.dataType} getPreviousHeadValue() { |
| return previousValue; |
| } |
| } |
| |
| </#list> |