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73 lines
2.3 KiB
C++
73 lines
2.3 KiB
C++
#include "config_core.h"
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#if USE_MYSQL
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#include <Storages/StorageMaterializedMySQL.h>
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#include <Interpreters/ExpressionAnalyzer.h>
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#include <Interpreters/TreeRewriter.h>
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#include <Parsers/ASTTablesInSelectQuery.h>
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#include <QueryPipeline/Pipe.h>
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#include <Processors/Transforms/FilterTransform.h>
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#include <Databases/MySQL/DatabaseMaterializedMySQL.h>
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#include <Storages/ReadFinalForExternalReplicaStorage.h>
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#include <Storages/SelectQueryInfo.h>
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namespace DB
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{
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StorageMaterializedMySQL::StorageMaterializedMySQL(const StoragePtr & nested_storage_, const IDatabase * database_)
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: StorageProxy(nested_storage_->getStorageID()), nested_storage(nested_storage_), database(database_)
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{
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StorageInMemoryMetadata in_memory_metadata;
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in_memory_metadata = nested_storage->getInMemoryMetadata();
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setInMemoryMetadata(in_memory_metadata);
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}
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bool StorageMaterializedMySQL::needRewriteQueryWithFinal(const Names & column_names) const
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{
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return needRewriteQueryWithFinalForStorage(column_names, nested_storage);
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}
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Pipe StorageMaterializedMySQL::read(
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const Names & column_names,
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const StorageMetadataPtr & metadata_snapshot,
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SelectQueryInfo & query_info,
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ContextPtr context,
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QueryProcessingStage::Enum processed_stage,
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size_t max_block_size,
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unsigned int num_streams)
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{
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if (const auto * db = typeid_cast<const DatabaseMaterializedMySQL *>(database))
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db->rethrowExceptionIfNeeded();
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return readFinalFromNestedStorage(nested_storage, column_names, metadata_snapshot,
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query_info, context, processed_stage, max_block_size, num_streams);
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}
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NamesAndTypesList StorageMaterializedMySQL::getVirtuals() const
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{
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if (const auto * db = typeid_cast<const DatabaseMaterializedMySQL *>(database))
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db->rethrowExceptionIfNeeded();
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return nested_storage->getVirtuals();
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}
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IStorage::ColumnSizeByName StorageMaterializedMySQL::getColumnSizes() const
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{
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auto sizes = nested_storage->getColumnSizes();
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auto nested_header = nested_storage->getInMemoryMetadataPtr()->getSampleBlock();
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String sign_column_name = nested_header.getByPosition(nested_header.columns() - 2).name;
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String version_column_name = nested_header.getByPosition(nested_header.columns() - 1).name;
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sizes.erase(sign_column_name);
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sizes.erase(version_column_name);
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return sizes;
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}
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}
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#endif
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