duckdb::ExpressionMatcher Class Reference

The ExpressionMatcher class contains a set of matchers that can be used to pattern match Expressions. More...

Inheritance diagram for duckdb::ExpressionMatcher:

Collaboration diagram for duckdb::ExpressionMatcher:

Public Member Functions
	ExpressionMatcher (ExpressionClass type=ExpressionClass::INVALID)
virtual bool	Match (Expression &expr, vector< reference< Expression > > &bindings)

Public Attributes
ExpressionClass	expr_class
	The ExpressionClass of the to-be-matched expression. ExpressionClass::INVALID for ANY.
unique_ptr< ExpressionTypeMatcher >	expr_type
	Matcher for the ExpressionType of the operator (nullptr for ANY)
unique_ptr< TypeMatcher >	type
	Matcher for the return_type of the expression (nullptr for ANY)

Detailed Description

The ExpressionMatcher class contains a set of matchers that can be used to pattern match Expressions.

Constructor & Destructor Documentation

ExpressionMatcher()

duckdb::ExpressionMatcher::ExpressionMatcher ( ExpressionClass  type = ExpressionClass::INVALID )

inlineexplicit

                                                                              : expr_class(type) {
    }

~ExpressionMatcher()

virtual duckdb::ExpressionMatcher::~ExpressionMatcher ( )

inlinevirtual

                                 {
    }

Member Function Documentation

Match()

virtual bool duckdb::ExpressionMatcher::Match ( Expression &  expr, vector< reference< Expression > > &  bindings  )

virtual

Checks if the given expression matches this ExpressionMatcher. If it does, the expression is appended to the bindings list and true is returned. Otherwise, false is returned.

Reimplemented in duckdb::ExpressionEqualityMatcher, duckdb::CaseExpressionMatcher, duckdb::ComparisonExpressionMatcher, duckdb::CastExpressionMatcher, duckdb::InClauseExpressionMatcher, duckdb::ConjunctionExpressionMatcher, duckdb::FunctionExpressionMatcher, duckdb::AggregateExpressionMatcher, duckdb::FoldableConstantMatcher, and duckdb::StableExpressionMatcher.

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The documentation for this class was generated from the following file:

• external/duckdb/duckdb.cpp