ClickHouse/dbms/include/DB/Parsers/ASTQueryWithTableAndOutput.h
2016-06-09 07:37:21 +03:00

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#pragma once
#include <DB/Parsers/IAST.h>
#include <DB/Parsers/ASTQueryWithOutput.h>
namespace DB
{
/** Запрос с указанием названия таблицы и, возможно, БД и секцией FORMAT.
*/
class ASTQueryWithTableAndOutput : public ASTQueryWithOutput
{
public:
String database;
String table;
ASTQueryWithTableAndOutput() = default;
ASTQueryWithTableAndOutput(const StringRange range_) : ASTQueryWithOutput(range_) {}
protected:
void formatHelper(const FormatSettings & settings, FormatState & state, FormatStateStacked frame, const char * name) const
{
settings.ostr << (settings.hilite ? hilite_keyword : "") << name << " " << (settings.hilite ? hilite_none : "")
<< (!database.empty() ? backQuoteIfNeed(database) + "." : "") << backQuoteIfNeed(table);
if (format)
{
std::string indent_str = settings.one_line ? "" : std::string(4 * frame.indent, ' ');
settings.ostr << (settings.hilite ? hilite_keyword : "") << settings.nl_or_ws << indent_str << "FORMAT " << (settings.hilite ? hilite_none : "");
format->formatImpl(settings, state, frame);
}
}
};
/// Объявляет класс-наследник ASTQueryWithTableAndOutput с реализованными методами getID и clone.
#define DEFINE_AST_QUERY_WITH_TABLE_AND_OUTPUT(Name, ID, Query) \
class Name : public ASTQueryWithTableAndOutput \
{ \
public: \
Name() = default; \
Name(const StringRange range_) : ASTQueryWithTableAndOutput(range_) {} \
String getID() const override { return ID"_" + database + "_" + table; }; \
\
ASTPtr clone() const override \
{ \
std::shared_ptr<Name> res = std::make_shared<Name>(*this); \
res->children.clear(); \
if (format) \
{ \
res->format = format->clone(); \
res->children.push_back(res->format); \
} \
return res; \
} \
\
protected: \
void formatImpl(const FormatSettings & settings, FormatState & state, FormatStateStacked frame) const override \
{ \
formatHelper(settings, state, frame, Query); \
} \
};
}