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#include <Parsers/ASTLiteral.h>
#include <Parsers/Kusto/ParserKQLQuery.h>
#include <Parsers/Kusto/ParserKQLOperators.h>
#include <Parsers/Kusto/ParserKQLStatement.h>
#include <Parsers/CommonParsers.h>
namespace DB
{
namespace ErrorCodes
{
extern const int SYNTAX_ERROR;
}
String KQLOperators::genHasAnyAllOpExpr(std::vector<String> &tokens, IParser::Pos &token_pos,String kql_op, String ch_op)
{
String new_expr;
Expected expected;
ParserToken s_lparen(TokenType::OpeningRoundBracket);
++token_pos;
if (!s_lparen.ignore(token_pos, expected))
throw Exception(ErrorCodes::SYNTAX_ERROR, "Syntax error near {}", kql_op);
auto haystack = tokens.back();
String logic_op = (kql_op == "has_all") ? " and " : " or ";
while (!token_pos->isEnd() && token_pos->type != TokenType::PipeMark && token_pos->type != TokenType::Semicolon)
{
auto tmp_arg = String(token_pos->begin, token_pos->end);
if (token_pos->type == TokenType::Comma)
new_expr = new_expr + logic_op;
else
new_expr = new_expr + ch_op + "(" + haystack + "," + tmp_arg + ")";
++token_pos;
if (token_pos->type == TokenType::ClosingRoundBracket)
break;
}
tokens.pop_back();
return new_expr;
}
String KQLOperators::genInOpExpr(IParser::Pos &token_pos, String kql_op, String ch_op)
{
String new_expr;
ParserToken s_lparen(TokenType::OpeningRoundBracket);
ASTPtr select;
Expected expected;
++token_pos;
if (!s_lparen.ignore(token_pos, expected))
throw Exception(ErrorCodes::SYNTAX_ERROR, "Syntax error near {}", kql_op);
--token_pos;
--token_pos;
return ch_op;
}
String KQLOperators::genHaystackOpExpr(std::vector<String> &tokens,IParser::Pos &token_pos,String kql_op, String ch_op, WildcardsPos wildcards_pos, WildcardsPos space_pos)
{
String new_expr, left_wildcards, right_wildcards, left_space, right_space;
switch (wildcards_pos)
{
case WildcardsPos::none:
break;
case WildcardsPos::left:
left_wildcards ="%";
break;
case WildcardsPos::right:
right_wildcards = "%";
break;
case WildcardsPos::both:
left_wildcards ="%";
right_wildcards = "%";
break;
}
switch (space_pos)
{
case WildcardsPos::none:
break;
case WildcardsPos::left:
left_space =" ";
break;
case WildcardsPos::right:
right_space = " ";
break;
case WildcardsPos::both:
left_space =" ";
right_space = " ";
break;
}
++token_pos;
if (!tokens.empty() && ((token_pos)->type == TokenType::StringLiteral || token_pos->type == TokenType::QuotedIdentifier))
new_expr = ch_op +"(" + tokens.back() +", '"+left_wildcards + left_space + String(token_pos->begin + 1,token_pos->end - 1) + right_space + right_wildcards + "')";
else if (!tokens.empty() && ((token_pos)->type == TokenType::BareWord))
{
auto tmp_arg = String(token_pos->begin, token_pos->end);
new_expr = ch_op +"(" + tokens.back() +", concat('" + left_wildcards + left_space + "', " + tmp_arg +", '"+ right_space + right_wildcards + "'))";
}
else
throw Exception(ErrorCodes::SYNTAX_ERROR, "Syntax error near {}", kql_op);
tokens.pop_back();
return new_expr;
}
bool KQLOperators::convert(std::vector<String> &tokens,IParser::Pos &pos)
{
auto begin = pos;
if (!pos->isEnd() && pos->type != TokenType::PipeMark && pos->type != TokenType::Semicolon)
{
KQLOperatorValue op_value = KQLOperatorValue::none;
auto token = String(pos->begin,pos->end);
String op = token;
if (token == "!")
{
++pos;
if (pos->isEnd() || pos->type == TokenType::PipeMark || pos->type == TokenType::Semicolon)
throw Exception(ErrorCodes::SYNTAX_ERROR, "Invalid negative operator");
op ="!"+String(pos->begin,pos->end);
}
else if (token == "matches")
{
++pos;
if (!pos->isEnd() && pos->type != TokenType::PipeMark && pos->type != TokenType::Semicolon)
{
if (String(pos->begin,pos->end) == "regex")
op +=" regex";
else
--pos;
}
}
else
{
op = token;
}
++pos;
if (!pos->isEnd() && pos->type != TokenType::PipeMark && pos->type != TokenType::Semicolon)
{
if (String(pos->begin,pos->end) == "~")
op +="~";
else
--pos;
}
else
--pos;
if (KQLOperator.find(op) == KQLOperator.end())
{
pos = begin;
return false;
}
op_value = KQLOperator[op];
String new_expr;
if (op_value == KQLOperatorValue::none)
tokens.push_back(op);
else
{
auto last_op = tokens.back();
auto last_pos = pos;
switch (op_value)
{
case KQLOperatorValue::contains:
new_expr = genHaystackOpExpr(tokens, pos, op, "ilike", WildcardsPos::both);
break;
case KQLOperatorValue::not_contains:
new_expr = genHaystackOpExpr(tokens, pos, op, "not ilike", WildcardsPos::both);
break;
case KQLOperatorValue::contains_cs:
new_expr = genHaystackOpExpr(tokens, pos, op, "like", WildcardsPos::both);
break;
case KQLOperatorValue::not_contains_cs:
new_expr = genHaystackOpExpr(tokens, pos, op, "not like", WildcardsPos::both);
break;
case KQLOperatorValue::endswith:
new_expr = genHaystackOpExpr(tokens, pos, op, "ilike", WildcardsPos::left);
break;
case KQLOperatorValue::not_endswith:
new_expr = genHaystackOpExpr(tokens, pos, op, "not ilike", WildcardsPos::left);
break;
case KQLOperatorValue::endswith_cs:
new_expr = genHaystackOpExpr(tokens, pos, op, "endsWith", WildcardsPos::none);
break;
case KQLOperatorValue::not_endswith_cs:
new_expr = genHaystackOpExpr(tokens, pos, op, "not endsWith", WildcardsPos::none);
break;
case KQLOperatorValue::equal:
break;
case KQLOperatorValue::not_equal:
break;
case KQLOperatorValue::equal_cs:
new_expr = "==";
break;
case KQLOperatorValue::not_equal_cs:
new_expr = "!=";
break;
case KQLOperatorValue::has:
new_expr = genHaystackOpExpr(tokens, pos, op, "hasTokenCaseInsensitive", WildcardsPos::none);
break;
case KQLOperatorValue::not_has:
new_expr = genHaystackOpExpr(tokens, pos, op, "not hasTokenCaseInsensitive", WildcardsPos::none);
break;
case KQLOperatorValue::has_all:
new_expr = genHasAnyAllOpExpr(tokens, pos, "has_all", "hasTokenCaseInsensitive");
break;
case KQLOperatorValue::has_any:
new_expr = genHasAnyAllOpExpr(tokens, pos, "has_any", "hasTokenCaseInsensitive");
break;
case KQLOperatorValue::has_cs:
new_expr = genHaystackOpExpr(tokens, pos, op, "hasToken", WildcardsPos::none);
break;
case KQLOperatorValue::not_has_cs:
new_expr = genHaystackOpExpr(tokens, pos, op, "not hasToken", WildcardsPos::none);
break;
case KQLOperatorValue::hasprefix:
new_expr = genHaystackOpExpr(tokens, pos, op, "ilike", WildcardsPos::right);
new_expr += " or ";
tokens.push_back(last_op);
new_expr += genHaystackOpExpr(tokens, last_pos, op, "ilike", WildcardsPos::both, WildcardsPos::left);
break;
case KQLOperatorValue::not_hasprefix:
new_expr = genHaystackOpExpr(tokens, pos, op, "not ilike", WildcardsPos::right);
new_expr += " and ";
tokens.push_back(last_op);
new_expr += genHaystackOpExpr(tokens, last_pos, op, "not ilike", WildcardsPos::both, WildcardsPos::left);
break;
case KQLOperatorValue::hasprefix_cs:
new_expr = genHaystackOpExpr(tokens, pos, op, "startsWith", WildcardsPos::none);
new_expr += " or ";
tokens.push_back(last_op);
new_expr += genHaystackOpExpr(tokens, last_pos, op, "like", WildcardsPos::both, WildcardsPos::left);
break;
case KQLOperatorValue::not_hasprefix_cs:
new_expr = genHaystackOpExpr(tokens, pos, op, "not startsWith", WildcardsPos::none);
new_expr += " and ";
tokens.push_back(last_op);
new_expr += genHaystackOpExpr(tokens, last_pos, op, "not like", WildcardsPos::both, WildcardsPos::left);
break;
case KQLOperatorValue::hassuffix:
new_expr = genHaystackOpExpr(tokens, pos, op, "ilike", WildcardsPos::left);
new_expr += " or ";
tokens.push_back(last_op);
new_expr += genHaystackOpExpr(tokens, last_pos, op, "ilike", WildcardsPos::both, WildcardsPos::right);
break;
case KQLOperatorValue::not_hassuffix:
new_expr = genHaystackOpExpr(tokens, pos, op, "not ilike", WildcardsPos::left);
new_expr += " and ";
tokens.push_back(last_op);
new_expr += genHaystackOpExpr(tokens, last_pos, op, "not ilike", WildcardsPos::both, WildcardsPos::right);
break;
case KQLOperatorValue::hassuffix_cs:
new_expr = genHaystackOpExpr(tokens, pos, op, "endsWith", WildcardsPos::none);
new_expr += " or ";
tokens.push_back(last_op);
new_expr += genHaystackOpExpr(tokens, last_pos, op, "like", WildcardsPos::both, WildcardsPos::right);
break;
case KQLOperatorValue::not_hassuffix_cs:
new_expr = genHaystackOpExpr(tokens, pos, op, "not endsWith", WildcardsPos::none);
new_expr += " and ";
tokens.push_back(last_op);
new_expr += genHaystackOpExpr(tokens, last_pos, op, "not like", WildcardsPos::both, WildcardsPos::right);
break;
case KQLOperatorValue::in_cs:
new_expr = genInOpExpr(pos,op,"in");
break;
case KQLOperatorValue::not_in_cs:
new_expr = genInOpExpr(pos,op,"not in");
break;
case KQLOperatorValue::in:
break;
case KQLOperatorValue::not_in:
break;
case KQLOperatorValue::matches_regex:
new_expr = genHaystackOpExpr(tokens, pos, op, "match", WildcardsPos::none);
break;
case KQLOperatorValue::startswith:
new_expr = genHaystackOpExpr(tokens, pos, op, "ilike", WildcardsPos::right);
break;
case KQLOperatorValue::not_startswith:
new_expr = genHaystackOpExpr(tokens, pos, op, "not ilike", WildcardsPos::right);
break;
case KQLOperatorValue::startswith_cs:
new_expr = genHaystackOpExpr(tokens, pos, op, "startsWith", WildcardsPos::none);
break;
case KQLOperatorValue::not_startswith_cs:
new_expr = genHaystackOpExpr(tokens, pos, op, "not startsWith", WildcardsPos::none);
break;
default:
break;
}
tokens.push_back(new_expr);
}
return true;
}
pos = begin;
return false;
}
}
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