JoinTargetRebaser Class Reference

Inheritance diagram for JoinTargetRebaser:

Collaboration diagram for JoinTargetRebaser:

Public Member Functions
	JoinTargetRebaser (const RelJoin *join, const unsigned old_base)
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 RelJoin *	join_
const unsigned	old_base_
const size_t	src1_base_
const size_t	target_count_

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 1592 of file RelAlgOptimizer.cpp.

Constructor & Destructor Documentation

JoinTargetRebaser::JoinTargetRebaser ( const RelJoin *  join, const unsigned  old_base  )

inline

Definition at line 1594 of file RelAlgOptimizer.cpp.

      : join_(join)
      , old_base_(old_base)
      , src1_base_(join->getInput(0)->size())
      , target_count_(join->size()) {}

Member Function Documentation

RetType JoinTargetRebaser::visitInput ( const RexInput *  input ) const

inlineoverridevirtual

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

Definition at line 1599 of file RelAlgOptimizer.cpp.

References CHECK_GE, CHECK_LT, RexAbstractInput::getIndex(), RelAlgNode::getInput(), join_, old_base_, src1_base_, and target_count_.

                                                           {
    auto curr_idx = input->getIndex();
    CHECK_GE(curr_idx, old_base_);
    CHECK_LT(static_cast<size_t>(curr_idx), target_count_);
    curr_idx -= old_base_;
    if (curr_idx >= src1_base_) {
      return boost::make_unique<RexInput>(join_->getInput(1), curr_idx - src1_base_);
    } else {
      return boost::make_unique<RexInput>(join_->getInput(0), curr_idx);
    }
  }

Here is the call graph for this function:

Member Data Documentation

const RelJoin* JoinTargetRebaser::join_

private

Definition at line 1612 of file RelAlgOptimizer.cpp.

Referenced by visitInput().

const unsigned JoinTargetRebaser::old_base_

private

Definition at line 1613 of file RelAlgOptimizer.cpp.

Referenced by visitInput().

const size_t JoinTargetRebaser::src1_base_

private

Definition at line 1614 of file RelAlgOptimizer.cpp.

Referenced by visitInput().

const size_t JoinTargetRebaser::target_count_

private

Definition at line 1615 of file RelAlgOptimizer.cpp.

Referenced by visitInput().

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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