1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
|
#pragma once
#include "match_recognize.h"
#include "node.h"
#include "sql_translation.h"
namespace NSQLTranslationV1 {
class TSqlMatchRecognizeClause final : public TSqlTranslation {
public:
TSqlMatchRecognizeClause(TContext& ctx, NSQLTranslation::ESqlMode mode);
TMatchRecognizeBuilderPtr CreateBuilder(const TRule_row_pattern_recognition_clause& node);
static constexpr size_t MaxPatternNesting = 20;
static constexpr size_t MaxPermutedItems = 6;
private:
std::tuple<TNodePtr, TNodePtr> ParsePartitionBy(TPosition pos, const TRule_window_partition_clause* node);
TMaybe<TVector<TSortSpecificationPtr>> ParseOrderBy(const TRule_order_by_clause* node);
TNamedFunction ParseOneMeasure(const TRule_row_pattern_measure_definition& node);
TVector<TNamedFunction> ParseMeasures(const TRule_row_pattern_measure_list* node);
TNodePtr ParseRowsPerMatch(TPosition pos, const TRule_row_pattern_rows_per_match* node);
TNodePtr ParseAfterMatchSkipTo(TPosition pos, const TRule_row_pattern_skip_to* node);
TNodePtr BuildPatternFactor(TPosition pos, TNodePtr primary, std::tuple<ui64, ui64, bool, bool, bool> quantifier);
TNodePtr ParsePatternFactor(TPosition pos, const TRule_row_pattern_factor& node, size_t nestingLevel, bool output);
TNodePtr BuildPatternTerm(TPosition pos, std::vector<TNodePtr> term);
TNodePtr ParsePatternTerm(TPosition pos, const TRule_row_pattern_term& node, size_t nestingLevel, bool output);
TNodePtr BuildPattern(TPosition pos, std::vector<TNodePtr> pattern);
TNodePtr ParsePattern(TPosition pos, const TRule_row_pattern& node, size_t nestingLevel, bool output);
TMaybe<TNodePtr> ParseSubset(TPosition pos, const TRule_row_pattern_subset_clause* node);
TNamedFunction ParseOneDefinition(const TRule_row_pattern_definition& node);
TVector<TNamedFunction> ParseDefinitions(const TRule_row_pattern_definition_list& node);
private:
THashSet<TString> PatternVarNames;
TNodePtr PatternVars;
};
} // namespace NSQLTranslationV1
|
