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authorvitalyisaev <[email protected]>2023-11-14 09:58:56 +0300
committervitalyisaev <[email protected]>2023-11-14 10:20:20 +0300
commitc2b2dfd9827a400a8495e172a56343462e3ceb82 (patch)
treecd4e4f597d01bede4c82dffeb2d780d0a9046bd0 /contrib/clickhouse/src/TableFunctions/ITableFunctionFileLike.h
parentd4ae8f119e67808cb0cf776ba6e0cf95296f2df7 (diff)
YQ Connector: move tests from yql to ydb (OSS)
Перенос папки с тестами на Коннектор из папки yql в папку ydb (синхронизируется с github).
Diffstat (limited to 'contrib/clickhouse/src/TableFunctions/ITableFunctionFileLike.h')
-rw-r--r--contrib/clickhouse/src/TableFunctions/ITableFunctionFileLike.h61
1 files changed, 61 insertions, 0 deletions
diff --git a/contrib/clickhouse/src/TableFunctions/ITableFunctionFileLike.h b/contrib/clickhouse/src/TableFunctions/ITableFunctionFileLike.h
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+++ b/contrib/clickhouse/src/TableFunctions/ITableFunctionFileLike.h
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+#pragma once
+
+#include <TableFunctions/ITableFunction.h>
+#include "Parsers/IAST_fwd.h"
+
+namespace DB
+{
+class ColumnsDescription;
+class Context;
+
+/*
+ * function(source, [format, structure, compression_method]) - creates a temporary storage from formatted source
+ */
+class ITableFunctionFileLike : public ITableFunction
+{
+public:
+ static constexpr auto signature = " - filename\n"
+ " - filename, format\n"
+ " - filename, format, structure\n"
+ " - filename, format, structure, compression_method\n";
+ virtual String getSignature() const
+ {
+ return signature;
+ }
+
+ bool needStructureHint() const override { return structure == "auto"; }
+
+ void setStructureHint(const ColumnsDescription & structure_hint_) override { structure_hint = structure_hint_; }
+
+ bool supportsReadingSubsetOfColumns(const ContextPtr & context) override;
+
+ static size_t getMaxNumberOfArguments() { return 4; }
+
+ static void addColumnsStructureToArguments(ASTs & args, const String & structure, const ContextPtr &);
+
+protected:
+
+ void parseArguments(const ASTPtr & ast_function, ContextPtr context) override;
+ virtual void parseArgumentsImpl(ASTs & args, const ContextPtr & context);
+
+ virtual void parseFirstArguments(const ASTPtr & arg, const ContextPtr & context);
+ virtual String getFormatFromFirstArgument();
+
+ String filename;
+ String path_to_archive;
+ String format = "auto";
+ String structure = "auto";
+ String compression_method = "auto";
+ ColumnsDescription structure_hint;
+
+private:
+ StoragePtr executeImpl(const ASTPtr & ast_function, ContextPtr context, const std::string & table_name, ColumnsDescription cached_columns, bool is_insert_query) const override;
+
+ virtual StoragePtr getStorage(
+ const String & source, const String & format, const ColumnsDescription & columns, ContextPtr global_context,
+ const std::string & table_name, const String & compression_method) const = 0;
+
+ bool hasStaticStructure() const override { return structure != "auto"; }
+};
+
+}