anonymous_namespace{RelAlgOptimizer.cpp}::RexProjectInputRedirector Class Reference

Inheritance diagram for anonymous_namespace{RelAlgOptimizer.cpp}::RexProjectInputRedirector:

Collaboration diagram for anonymous_namespace{RelAlgOptimizer.cpp}::RexProjectInputRedirector:

Public Member Functions
	RexProjectInputRedirector (const std::unordered_set< const RelProject * > &crt_inputs)
RetType	visitInput (const RexInput *input) const override
Public Member Functions inherited from RexVisitorBase< std::unique_ptr< const RexScalar > >
virtual std::unique_ptr< const RexScalar >	visit (const RexScalar *rex_scalar) const

Private Attributes
const std::unordered_set < const RelProject * > &	crt_projects_

Additional Inherited Members
Public Types inherited from RexDeepCopyVisitor
using	RowValues = std::vector< std::unique_ptr< const RexScalar >>
Static Public Member Functions inherited from RexDeepCopyVisitor
static std::vector< RowValues >	copy (std::vector< RowValues > const &rhs)
Protected Types inherited from RexDeepCopyVisitor
using	RetType = std::unique_ptr< const RexScalar >
Protected Member Functions inherited from RexDeepCopyVisitor
RetType	visitInput (const RexInput *input) const override
RetType	visitLiteral (const RexLiteral *literal) const override
RetType	visitSubQuery (const RexSubQuery *subquery) const override
RetType	visitRef (const RexRef *ref) const override
RetType	visitOperator (const RexOperator *rex_operator) const override
RetType	visitWindowFunctionOperator (const RexWindowFunctionOperator *rex_window_function_operator) const
RetType	visitCase (const RexCase *rex_case) const override

Detailed Description

Definition at line 28 of file RelAlgOptimizer.cpp.

Constructor & Destructor Documentation

anonymous_namespace{RelAlgOptimizer.cpp}::RexProjectInputRedirector::RexProjectInputRedirector ( const std::unordered_set< const RelProject * > &  crt_inputs )

inline

Definition at line 30 of file RelAlgOptimizer.cpp.

      : crt_projects_(crt_inputs) {}

Member Function Documentation

RetType anonymous_namespace{RelAlgOptimizer.cpp}::RexProjectInputRedirector::visitInput ( const RexInput *  input ) const

inlineoverridevirtual

Implements RexVisitorBase< std::unique_ptr< const RexScalar > >.

Definition at line 33 of file RelAlgOptimizer.cpp.

References CHECK, CHECK_EQ, RexInput::deepCopy(), RexAbstractInput::getIndex(), RexInput::getSourceNode(), and join().

                                                           {
    auto source = dynamic_cast<const RelProject*>(input->getSourceNode());
    if (!source || !crt_projects_.count(source)) {
      return input->deepCopy();
    }
    auto new_source = source->getInput(0);
    auto new_input =
        dynamic_cast<const RexInput*>(source->getProjectAt(input->getIndex()));
    if (!new_input) {
      return input->deepCopy();
    }
    if (auto join = dynamic_cast<const RelJoin*>(new_source)) {
      CHECK(new_input->getSourceNode() == join->getInput(0) ||
            new_input->getSourceNode() == join->getInput(1));
    } else {
      CHECK_EQ(new_input->getSourceNode(), new_source);
    }
    return new_input->deepCopy();
  }

Here is the call graph for this function:

Member Data Documentation

const std::unordered_set<const RelProject*>& anonymous_namespace{RelAlgOptimizer.cpp}::RexProjectInputRedirector::crt_projects_

private

Definition at line 54 of file RelAlgOptimizer.cpp.

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

• /home/jenkins-slave/workspace/core-os-doxygen/QueryEngine/RelAlgOptimizer.cpp