anonymous_namespace{RelAlgDag.cpp}::anonymous_namespace{RelAlgDag.cpp}::CoalesceSecondaryProjectVisitor Class Reference

Inheritance diagram for anonymous_namespace{RelAlgDag.cpp}::anonymous_namespace{RelAlgDag.cpp}::CoalesceSecondaryProjectVisitor:

Collaboration diagram for anonymous_namespace{RelAlgDag.cpp}::anonymous_namespace{RelAlgDag.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

Protected Member Functions
bool	aggregateResult (const bool &aggregate, const bool &next_result) const final
bool	defaultResult () const final

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 1912 of file RelAlgDag.cpp.

Member Function Documentation

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

inlinefinalprotected

Definition at line 1928 of file RelAlgDag.cpp.

                                                                                   {
    return aggregate && next_result;
  }

bool anonymous_namespace{RelAlgDag.cpp}::anonymous_namespace{RelAlgDag.cpp}::CoalesceSecondaryProjectVisitor::defaultResult ( ) const

inlinefinalprotected

Definition at line 1932 of file RelAlgDag.cpp.

{ return true; }

bool anonymous_namespace{RelAlgDag.cpp}::anonymous_namespace{RelAlgDag.cpp}::CoalesceSecondaryProjectVisitor::visitInput ( const RexInput *  input ) const

inlinefinal

Definition at line 1914 of file RelAlgDag.cpp.

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

                                                     {
    // The top level expression node is checked before we apply the visitor. If we get
    // here, this input rex is a child of another rex node, and we handle the can be
    // coalesced check slightly differently
    return input_can_be_coalesced(input->getSourceNode(), input->getIndex(), false);
  }

Here is the call graph for this function:

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

inlinefinal

Definition at line 1921 of file RelAlgDag.cpp.

{ return false; }

bool anonymous_namespace{RelAlgDag.cpp}::anonymous_namespace{RelAlgDag.cpp}::CoalesceSecondaryProjectVisitor::visitRef ( const RexRef *  ) const

inlinefinal

Definition at line 1925 of file RelAlgDag.cpp.

{ return false; }

bool anonymous_namespace{RelAlgDag.cpp}::anonymous_namespace{RelAlgDag.cpp}::CoalesceSecondaryProjectVisitor::visitSubQuery ( const RexSubQuery *  ) const

inlinefinal

Definition at line 1923 of file RelAlgDag.cpp.

{ return false; }

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

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