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anonymous_namespace{RelAlgDagBuilder.cpp}::anonymous_namespace{RelAlgDagBuilder.cpp}::CoalesceSecondaryProjectVisitor Class Reference
+ Inheritance diagram for anonymous_namespace{RelAlgDagBuilder.cpp}::anonymous_namespace{RelAlgDagBuilder.cpp}::CoalesceSecondaryProjectVisitor:
+ Collaboration diagram for anonymous_namespace{RelAlgDagBuilder.cpp}::anonymous_namespace{RelAlgDagBuilder.cpp}::CoalesceSecondaryProjectVisitor:

Public Member Functions

bool visitInput (const RexInput *input) const final
 
bool visitLiteral (const RexLiteral *) const final
 
bool visitSubQuery (const RexSubQuery *) const final
 
bool visitRef (const RexRef *) const final
 
- Public Member Functions inherited from RexVisitor< bool >
bool visitInput (const RexInput *) const override
 
bool visitLiteral (const RexLiteral *) const override
 
bool visitSubQuery (const RexSubQuery *) const override
 
bool visitRef (const RexRef *) const override
 
bool visitOperator (const RexOperator *rex_operator) const override
 
bool visitCase (const RexCase *rex_case) const override
 
- Public Member Functions inherited from RexVisitorBase< bool >
virtual bool visit (const RexScalar *rex_scalar) const
 

Protected Member Functions

bool aggregateResult (const bool &aggregate, const bool &next_result) const final
 
bool defaultResult () const final
 
- Protected Member Functions inherited from RexVisitor< bool >
bool defaultResult () const override
 

Detailed Description

CoalesceSecondaryProjectVisitor visits each relational algebra expression node in a given input and determines whether or not the input is a candidate for coalescing into the parent RA node. Intended for use only on the inputs of a RelProject node.

Definition at line 1532 of file RelAlgDagBuilder.cpp.

Member Function Documentation

bool anonymous_namespace{RelAlgDagBuilder.cpp}::anonymous_namespace{RelAlgDagBuilder.cpp}::CoalesceSecondaryProjectVisitor::aggregateResult ( const bool &  aggregate,
const bool &  next_result 
) const
inlinefinalprotectedvirtual

Reimplemented from RexVisitor< bool >.

Definition at line 1548 of file RelAlgDagBuilder.cpp.

1548  {
1549  return aggregate && next_result;
1550  }
bool anonymous_namespace{RelAlgDagBuilder.cpp}::anonymous_namespace{RelAlgDagBuilder.cpp}::CoalesceSecondaryProjectVisitor::defaultResult ( ) const
inlinefinalprotectedvirtual

Implements RexVisitorBase< bool >.

Definition at line 1552 of file RelAlgDagBuilder.cpp.

1552 { return true; }
bool anonymous_namespace{RelAlgDagBuilder.cpp}::anonymous_namespace{RelAlgDagBuilder.cpp}::CoalesceSecondaryProjectVisitor::visitInput ( const RexInput *  input) const
inlinefinalvirtual

Implements RexVisitorBase< bool >.

Definition at line 1534 of file RelAlgDagBuilder.cpp.

References anonymous_namespace{RelAlgDagBuilder.cpp}::anonymous_namespace{RelAlgDagBuilder.cpp}::input_can_be_coalesced().

1534  {
1535  // The top level expression node is checked before we apply the visitor. If we get
1536  // here, this input rex is a child of another rex node, and we handle the can be
1537  // coalesced check slightly differently
1538  return input_can_be_coalesced(input->getSourceNode(), input->getIndex(), false);
1539  }
RexAbstractInput::getIndex
unsigned getIndex() const
Definition: RelAlgDagBuilder.h:57
RexInput::getSourceNode
const RelAlgNode * getSourceNode() const
Definition: RelAlgDagBuilder.h:329
anonymous_namespace{RelAlgDagBuilder.cpp}::anonymous_namespace{RelAlgDagBuilder.cpp}::input_can_be_coalesced
bool input_can_be_coalesced(const RelAlgNode *parent_node, const size_t index, const bool first_rex_is_input)
Definition: RelAlgDagBuilder.cpp:1511

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bool anonymous_namespace{RelAlgDagBuilder.cpp}::anonymous_namespace{RelAlgDagBuilder.cpp}::CoalesceSecondaryProjectVisitor::visitLiteral ( const RexLiteral *  ) const
inlinefinalvirtual

Implements RexVisitorBase< bool >.

Definition at line 1541 of file RelAlgDagBuilder.cpp.

1541 { return false; }
bool anonymous_namespace{RelAlgDagBuilder.cpp}::anonymous_namespace{RelAlgDagBuilder.cpp}::CoalesceSecondaryProjectVisitor::visitRef ( const RexRef *  ) const
inlinefinalvirtual

Implements RexVisitorBase< bool >.

Definition at line 1545 of file RelAlgDagBuilder.cpp.

1545 { return false; }
bool anonymous_namespace{RelAlgDagBuilder.cpp}::anonymous_namespace{RelAlgDagBuilder.cpp}::CoalesceSecondaryProjectVisitor::visitSubQuery ( const RexSubQuery *  ) const
inlinefinalvirtual

Implements RexVisitorBase< bool >.

Definition at line 1543 of file RelAlgDagBuilder.cpp.

1543 { return false; }
The documentation for this class was generated from the following file: