| /* |
| * 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. |
| */ |
| |
| package org.apache.iotdb.db.queryengine.plan.analyze.schema; |
| |
| import org.apache.iotdb.commons.path.PartialPath; |
| import org.apache.iotdb.commons.path.PathPatternTree; |
| import org.apache.iotdb.db.queryengine.common.MPPQueryContext; |
| import org.apache.iotdb.db.queryengine.common.schematree.ISchemaTree; |
| import org.apache.iotdb.db.schemaengine.template.Template; |
| |
| import org.apache.tsfile.enums.TSDataType; |
| import org.apache.tsfile.file.metadata.enums.CompressionType; |
| import org.apache.tsfile.file.metadata.enums.TSEncoding; |
| import org.apache.tsfile.utils.Pair; |
| |
| import java.util.List; |
| import java.util.Map; |
| |
| /** |
| * This interface is used to fetch the metadata information required in execution plan generating. |
| */ |
| public interface ISchemaFetcher { |
| |
| /** |
| * Fetch all the schema of existing timeseries matched by the given patternTree |
| * |
| * @param patternTree used for matching the timeseries |
| * @return the matched timeseries schema organized as tree structure logically |
| */ |
| ISchemaTree fetchSchema( |
| PathPatternTree patternTree, boolean withTemplate, MPPQueryContext context); |
| |
| /** |
| * Fetch all the schema with tags of existing timeseries matched by the given patternTree |
| * |
| * @param patternTree used for matching the timeseries |
| * @return the matched timeseries schema organized as tree structure logically |
| */ |
| ISchemaTree fetchSchemaWithTags( |
| PathPatternTree patternTree, boolean withTemplate, MPPQueryContext context); |
| |
| /** |
| * Fetch and compute the schema of target timeseries, with device and measurement defined in given |
| * schemaComputationWithAutoCreation. The computation defined in given |
| * schemaComputationWithAutoCreation will be executed during scanning the fetched schema. If some |
| * target timeseries doesn't exist, they will be auto created. |
| * |
| * @param schemaComputationWithAutoCreation define the target device, measurements and computation |
| */ |
| void fetchAndComputeSchemaWithAutoCreate( |
| ISchemaComputationWithAutoCreation schemaComputationWithAutoCreation, |
| MPPQueryContext context); |
| |
| /** |
| * Fetch and compute the schema of target timeseries, with device and measurement defined in given |
| * schemaComputationWithAutoCreation. The computation defined in given |
| * schemaComputationWithAutoCreation will be executed during scanning the fetched schema. If some |
| * target timeseries doesn't exist, they will be auto created. |
| * |
| * @param schemaComputationWithAutoCreationList define the target devices, measurements and |
| * computation |
| */ |
| void fetchAndComputeSchemaWithAutoCreate( |
| List<? extends ISchemaComputationWithAutoCreation> schemaComputationWithAutoCreationList, |
| MPPQueryContext context); |
| |
| ISchemaTree fetchSchemaListWithAutoCreate( |
| List<PartialPath> devicePath, |
| List<String[]> measurements, |
| List<TSDataType[]> tsDataTypes, |
| List<TSEncoding[]> encodings, |
| List<CompressionType[]> compressionTypes, |
| List<Boolean> aligned, |
| MPPQueryContext context); |
| |
| Pair<Template, PartialPath> checkTemplateSetInfo(PartialPath devicePath); |
| |
| Pair<Template, PartialPath> checkTemplateSetAndPreSetInfo( |
| PartialPath timeSeriesPath, String alias); |
| |
| Map<Integer, Template> checkAllRelatedTemplate(PartialPath pathPattern); |
| |
| Pair<Template, List<PartialPath>> getAllPathsSetTemplate(String templateName); |
| } |