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#include <Parsers/MySQL/ASTDeclarePartition.h>
#include <Parsers/ASTIdentifier.h>
#include <Parsers/ExpressionElementParsers.h>
#include <Parsers/ExpressionListParsers.h>
#include <Parsers/MySQL/ASTDeclareOption.h>
#include <Parsers/MySQL/ASTDeclareSubPartition.h>
namespace DB
{
namespace MySQLParser
{
ASTPtr ASTDeclarePartition::clone() const
{
auto res = std::make_shared<ASTDeclarePartition>(*this);
res->children.clear();
if (options)
{
res->options = options->clone();
res->children.emplace_back(res->options);
}
if (less_than)
{
res->less_than = less_than->clone();
res->children.emplace_back(res->less_than);
}
if (in_expression)
{
res->in_expression = in_expression->clone();
res->children.emplace_back(res->in_expression);
}
if (subpartitions)
{
res->subpartitions = subpartitions->clone();
res->children.emplace_back(res->subpartitions);
}
return res;
}
bool ParserDeclarePartition::parseImpl(IParser::Pos & pos, ASTPtr & node, Expected & expected)
{
if (!ParserKeyword{"PARTITION"}.ignore(pos, expected))
return false;
ASTPtr options;
ASTPtr less_than;
ASTPtr in_expression;
ASTPtr partition_name;
ParserExpression p_expression;
ParserIdentifier p_identifier;
if (!p_identifier.parse(pos, partition_name, expected))
return false;
ParserKeyword p_values("VALUES");
if (p_values.ignore(pos, expected))
{
if (ParserKeyword{"IN"}.ignore(pos, expected))
{
if (!p_expression.parse(pos, in_expression, expected))
return false;
}
else if (ParserKeyword{"LESS THAN"}.ignore(pos, expected))
{
if (!p_expression.parse(pos, less_than, expected))
return false;
}
}
ParserDeclareOptions options_p{
{
OptionDescribe("ENGINE", "engine", std::make_shared<ParserIdentifier>()),
OptionDescribe("STORAGE ENGINE", "engine", std::make_shared<ParserIdentifier>()),
OptionDescribe("COMMENT", "comment", std::make_shared<ParserStringLiteral>()),
OptionDescribe("DATA DIRECTORY", "data_directory", std::make_shared<ParserStringLiteral>()),
OptionDescribe("INDEX DIRECTORY", "index_directory", std::make_shared<ParserStringLiteral>()),
OptionDescribe("MAX_ROWS", "max_rows", std::make_shared<ParserLiteral>()),
OptionDescribe("MIN_ROWS", "min_rows", std::make_shared<ParserLiteral>()),
OptionDescribe("TABLESPACE", "tablespace", std::make_shared<ParserIdentifier>()),
}
};
/// Optional options
options_p.parse(pos, options, expected);
ASTPtr subpartitions;
if (ParserToken(TokenType::OpeningRoundBracket).ignore(pos, expected))
{
if (!DB::ParserList(std::make_unique<ParserDeclareSubPartition>(), std::make_unique<ParserToken>(TokenType::Comma))
.parse(pos, subpartitions, expected))
return false;
if (!ParserToken(TokenType::ClosingRoundBracket).ignore(pos, expected))
return false;
}
auto partition_declare = std::make_shared<ASTDeclarePartition>();
partition_declare->options = options;
partition_declare->less_than = less_than;
partition_declare->in_expression = in_expression;
partition_declare->subpartitions = subpartitions;
partition_declare->partition_name = partition_name->as<ASTIdentifier>()->name();
if (options)
{
partition_declare->options = options;
partition_declare->children.emplace_back(partition_declare->options);
}
if (partition_declare->less_than)
partition_declare->children.emplace_back(partition_declare->less_than);
if (partition_declare->in_expression)
partition_declare->children.emplace_back(partition_declare->in_expression);
if (partition_declare->subpartitions)
partition_declare->children.emplace_back(partition_declare->subpartitions);
node = partition_declare;
return true;
}
}
}
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