raminqaf commented on code in PR #27222: URL: https://github.com/apache/flink/pull/27222#discussion_r2514987356
########## flink-table/flink-table-planner/src/main/java/org/apache/flink/table/planner/operations/converters/AbstractCreateMaterializedTableConverter.java: ########## @@ -0,0 +1,216 @@ +/* + * 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.flink.table.planner.operations.converters; + +import org.apache.flink.sql.parser.ddl.SqlCreateMaterializedTable; +import org.apache.flink.table.api.Schema; +import org.apache.flink.table.api.ValidationException; +import org.apache.flink.table.catalog.CatalogMaterializedTable; +import org.apache.flink.table.catalog.CatalogMaterializedTable.LogicalRefreshMode; +import org.apache.flink.table.catalog.CatalogMaterializedTable.RefreshMode; +import org.apache.flink.table.catalog.IntervalFreshness; +import org.apache.flink.table.catalog.ObjectIdentifier; +import org.apache.flink.table.catalog.ResolvedCatalogMaterializedTable; +import org.apache.flink.table.catalog.ResolvedSchema; +import org.apache.flink.table.catalog.TableDistribution; +import org.apache.flink.table.catalog.UnresolvedIdentifier; +import org.apache.flink.table.planner.operations.PlannerQueryOperation; +import org.apache.flink.table.planner.utils.MaterializedTableUtils; +import org.apache.flink.table.planner.utils.OperationConverterUtils; +import org.apache.flink.table.types.logical.LogicalType; +import org.apache.flink.table.types.logical.LogicalTypeFamily; + +import org.apache.calcite.sql.SqlNode; + +import java.util.List; +import java.util.Map; +import java.util.Optional; +import java.util.Set; +import java.util.stream.Collectors; + +import static org.apache.flink.table.api.config.MaterializedTableConfigOptions.DATE_FORMATTER; +import static org.apache.flink.table.api.config.MaterializedTableConfigOptions.PARTITION_FIELDS; + +/** + * Abstract class for converting {@link SqlCreateMaterializedTable} and it's children to create + * materialized table operations. + */ +public abstract class AbstractCreateMaterializedTableConverter<T extends SqlCreateMaterializedTable> + implements SqlNodeConverter<T> { + /** Context of create table converters while mering source and derived items. */ + protected interface MergeContext { + Schema getMergedSchema(); + + Map<String, String> getMergedTableOptions(); + + List<String> getMergedPartitionKeys(); + + Optional<TableDistribution> getMergedTableDistribution(); + + String getMergedDefinitionQuery(); + + ResolvedSchema getMergedQuerySchema(); + } + + protected abstract MergeContext getMergeContext( + T sqlCreateMaterializedTable, ConvertContext context); + + protected final Optional<TableDistribution> getDerivedTableDistribution( + T sqlCreateMaterializedTable) { + return Optional.ofNullable(sqlCreateMaterializedTable.getDistribution()) + .map(OperationConverterUtils::getDistributionFromSqlDistribution); + } + + protected final List<String> getDerivedPartitionKeys(T sqlCreateMaterializedTable) { + return OperationConverterUtils.getColumnNames( + sqlCreateMaterializedTable.getPartitionKeyList()); + } + + protected final Map<String, String> getDerivedTableOptions(T sqlCreateMaterializedTable) { + return OperationConverterUtils.getProperties(sqlCreateMaterializedTable.getPropertyList()); + } + + protected final IntervalFreshness getDerivedFreshness(T sqlCreateMaterializedTable) { + return Optional.ofNullable(sqlCreateMaterializedTable.getFreshness()) + .map(MaterializedTableUtils::getMaterializedTableFreshness) + .orElse(null); + } + + protected final ResolvedSchema getQueryResolvedSchema( + T sqlCreateMaterializedTable, ConvertContext context) { + SqlNode selectQuery = sqlCreateMaterializedTable.getAsQuery(); + SqlNode validateQuery = context.getSqlValidator().validate(selectQuery); + + PlannerQueryOperation queryOperation = + new PlannerQueryOperation( + context.toRelRoot(validateQuery).project(), + () -> context.toQuotedSqlString(validateQuery)); + return queryOperation.getResolvedSchema(); + } + + protected final LogicalRefreshMode getDerivedLogicalRefreshMode(T sqlCreateMaterializedTable) { + return MaterializedTableUtils.deriveLogicalRefreshMode( + sqlCreateMaterializedTable.getRefreshMode()); + } + + protected final RefreshMode getDerivedRefreshMode(LogicalRefreshMode logicalRefreshMode) { + return MaterializedTableUtils.fromLogicalRefreshModeToRefreshMode(logicalRefreshMode); + } + + protected final String getDerivedDefinitionQuery( + T sqlCreateMaterializedTable, ConvertContext context) { + SqlNode selectQuery = sqlCreateMaterializedTable.getAsQuery(); + SqlNode validatedQuery = context.getSqlValidator().validate(selectQuery); + return context.toQuotedSqlString(validatedQuery); + } + + protected final String getComment(T sqlCreateMaterializedTable) { + return OperationConverterUtils.getComment(sqlCreateMaterializedTable.getComment()); + } + + protected final ResolvedCatalogMaterializedTable getResolvedCatalogMaterializedTable( + T sqlCreateMaterializedTable, ConvertContext context) { + final MergeContext mergeContext = getMergeContext(sqlCreateMaterializedTable, context); + final List<String> partitionKeys = mergeContext.getMergedPartitionKeys(); + final Schema schema = mergeContext.getMergedSchema(); + final ResolvedSchema querySchema = mergeContext.getMergedQuerySchema(); + final Map<String, String> tableOptions = mergeContext.getMergedTableOptions(); + verifyPartitioningColumnsExist(querySchema, partitionKeys, tableOptions); + + final TableDistribution distribution = + mergeContext.getMergedTableDistribution().orElse(null); + final String comment = getComment(sqlCreateMaterializedTable); + final String definitionQuery = mergeContext.getMergedDefinitionQuery(); Review Comment: should we rename `getMergedDefinitionQuery` to `getExpandedQuery`? -- This is an automated message from the Apache Git Service. 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