RexLiteral Class Reference

#include <RelAlgDag.h>

Inheritance diagram for RexLiteral:

Collaboration diagram for RexLiteral:

Public Member Functions
	RexLiteral ()
	RexLiteral (const int64_t val, const SQLTypes type, const SQLTypes target_type, const unsigned scale, const unsigned precision, const unsigned target_scale, const unsigned target_precision)
	RexLiteral (const double val, const SQLTypes type, const SQLTypes target_type, const unsigned scale, const unsigned precision, const unsigned target_scale, const unsigned target_precision)
	RexLiteral (const std::string &val, const SQLTypes type, const SQLTypes target_type, const unsigned scale, const unsigned precision, const unsigned target_scale, const unsigned target_precision)
	RexLiteral (const bool val, const SQLTypes type, const SQLTypes target_type, const unsigned scale, const unsigned precision, const unsigned target_scale, const unsigned target_precision)
	RexLiteral (const SQLTypes target_type)
virtual void	acceptChildren (Visitor &v) const override
virtual void	accept (Visitor &v, std::string name) const override
template<class T >
T	getVal () const
SQLTypes	getType () const
SQLTypes	getTargetType () const
unsigned	getScale () const
unsigned	getPrecision () const
unsigned	getTargetScale () const
unsigned	getTargetPrecision () const
std::string	toString (RelRexToStringConfig config=RelRexToStringConfig::defaults()) const override
std::unique_ptr< RexLiteral >	deepCopy () const
virtual size_t	toHash () const override
Public Member Functions inherited from Rex
virtual	~Rex ()
virtual size_t	getStepNumber () const
Public Member Functions inherited from RelAlgDagNode
	RelAlgDagNode ()
virtual void	setStepNumber (size_t step) const
std::optional< size_t >	getIdInPlanTree () const
void	setIdInPlanTree (size_t id) const

Private Attributes
boost::variant< boost::blank, int64_t, double, std::string, bool >	literal_
SQLTypes	type_
SQLTypes	target_type_
unsigned	scale_
unsigned	precision_
unsigned	target_scale_
unsigned	target_precision_

Friends
struct	RelAlgDagSerializer
std::size_t	hash_value (RexLiteral const &)

Additional Inherited Members
Protected Attributes inherited from Rex
std::optional< size_t >	hash_
Protected Attributes inherited from RelAlgDagNode
size_t	step_ {0}
std::optional< size_t >	id_in_plan_tree_

Detailed Description

Definition at line 193 of file RelAlgDag.h.

Constructor & Destructor Documentation

RexLiteral::RexLiteral ( )

inline

Definition at line 196 of file RelAlgDag.h.

      : literal_(), scale_{0}, precision_{0}, target_scale_{0}, target_precision_{0} {}

RexLiteral::RexLiteral ( const int64_t  val, const SQLTypes  type, const SQLTypes  target_type, const unsigned  scale, const unsigned  precision, const unsigned  target_scale, const unsigned  target_precision  )

inline

Definition at line 199 of file RelAlgDag.h.

References CHECK, is_datetime(), kBIGINT, kDECIMAL, kINT, kINTERVAL_DAY_TIME, and kINTERVAL_YEAR_MONTH.

      : literal_(val)
      , type_(type)
      , target_type_(target_type)
      , scale_(scale)
      , precision_(precision)
      , target_scale_(target_scale)
      , target_precision_(target_precision) {
    CHECK(type == kDECIMAL || type == kINTERVAL_DAY_TIME ||
          type == kINTERVAL_YEAR_MONTH || is_datetime(type) || type == kBIGINT ||
          type == kINT);
  }

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RexLiteral::RexLiteral ( const double  val, const SQLTypes  type, const SQLTypes  target_type, const unsigned  scale, const unsigned  precision, const unsigned  target_scale, const unsigned  target_precision  )

inline

Definition at line 218 of file RelAlgDag.h.

References CHECK_EQ, and kDOUBLE.

      : literal_(val)
      , type_(type)
      , target_type_(target_type)
      , scale_(scale)
      , precision_(precision)
      , target_scale_(target_scale)
      , target_precision_(target_precision) {
    CHECK_EQ(kDOUBLE, type);
  }

RexLiteral::RexLiteral ( const std::string &  val, const SQLTypes  type, const SQLTypes  target_type, const unsigned  scale, const unsigned  precision, const unsigned  target_scale, const unsigned  target_precision  )

inline

Definition at line 235 of file RelAlgDag.h.

References CHECK_EQ, and kTEXT.

      : literal_(val)
      , type_(type)
      , target_type_(target_type)
      , scale_(scale)
      , precision_(precision)
      , target_scale_(target_scale)
      , target_precision_(target_precision) {
    CHECK_EQ(kTEXT, type);
  }

RexLiteral::RexLiteral ( const bool  val, const SQLTypes  type, const SQLTypes  target_type, const unsigned  scale, const unsigned  precision, const unsigned  target_scale, const unsigned  target_precision  )

inline

Definition at line 252 of file RelAlgDag.h.

References CHECK_EQ, and kBOOLEAN.

      : literal_(val)
      , type_(type)
      , target_type_(target_type)
      , scale_(scale)
      , precision_(precision)
      , target_scale_(target_scale)
      , target_precision_(target_precision) {
    CHECK_EQ(kBOOLEAN, type);
  }

RexLiteral::RexLiteral ( const SQLTypes  target_type )

inline

Definition at line 269 of file RelAlgDag.h.

      : literal_()
      , type_(kNULLT)
      , target_type_(target_type)
      , scale_(0)
      , precision_(0)
      , target_scale_(0)
      , target_precision_(0) {}

Member Function Documentation

virtual void RexLiteral::accept ( Visitor &  v, std::string  name  ) const

inlineoverridevirtual

Implements RelAlgDagNode.

Definition at line 279 of file RelAlgDag.h.

References RelAlgDagNode::acceptChildren(), and RelAlgDagNode::Visitor::visit().

Referenced by TableFunctionsFactory_node.PrintNode::__str__().

                                                                 {
    if (v.visit(this, std::move(name))) {
      acceptChildren(v);
    }
  }

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virtual void RexLiteral::acceptChildren ( Visitor &  v ) const

inlineoverridevirtual

Implements RelAlgDagNode.

Definition at line 278 of file RelAlgDag.h.

{}

std::unique_ptr<RexLiteral> RexLiteral::deepCopy ( ) const

inline

Definition at line 313 of file RelAlgDag.h.

                                             {
    return std::make_unique<RexLiteral>(*this);
  }

unsigned RexLiteral::getPrecision ( ) const

inline

Definition at line 298 of file RelAlgDag.h.

References precision_.

{ return precision_; }

unsigned RexLiteral::getScale ( ) const

inline

Definition at line 296 of file RelAlgDag.h.

References scale_.

{ return scale_; }

unsigned RexLiteral::getTargetPrecision ( ) const

inline

Definition at line 302 of file RelAlgDag.h.

References target_precision_.

{ return target_precision_; }

unsigned RexLiteral::getTargetScale ( ) const

inline

Definition at line 300 of file RelAlgDag.h.

References target_scale_.

{ return target_scale_; }

SQLTypes RexLiteral::getTargetType ( ) const

inline

Definition at line 294 of file RelAlgDag.h.

References target_type_.

{ return target_type_; }

SQLTypes RexLiteral::getType ( ) const

inline

Definition at line 292 of file RelAlgDag.h.

References type_.

{ return type_; }

template<class T >

T RexLiteral::getVal ( ) const

inline

Definition at line 286 of file RelAlgDag.h.

References CHECK, and literal_.

                   {
    const auto ptr = boost::get<T>(&literal_);
    CHECK(ptr);
    return *ptr;
  }

virtual size_t RexLiteral::toHash ( ) const

inlineoverridevirtual

Implements Rex.

Definition at line 317 of file RelAlgDag.h.

References hash_value().

{ return hash_value(*this); }

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std::string RexLiteral::toString ( RelRexToStringConfig  config = RelRexToStringConfig::defaults() ) const

inlineoverridevirtual

Implements RelAlgDagNode.

Definition at line 304 of file RelAlgDag.h.

References literal_, precision_, scale_, target_precision_, target_scale_, target_type_, and type_.

                                                                                   {
    std::ostringstream oss;
    oss << "RexLiteral(" << literal_ << " type=" << type_ << '(' << precision_ << ','
        << scale_ << ") target_type=" << target_type_ << '(' << target_precision_ << ','
        << target_scale_ << "))";
    return oss.str();
  }

Friends And Related Function Documentation

std::size_t hash_value ( RexLiteral const &  rex_literal )

friend

Definition at line 3534 of file RelAlgDag.cpp.

                                                    {
  if (rex_literal.hash_) {
    return *rex_literal.hash_;
  }
  rex_literal.hash_ = typeid(RexLiteral).hash_code();
  boost::apply_visitor(
      [&rex_literal](auto&& current_val) {
        using T = std::decay_t<decltype(current_val)>;
        if constexpr (!std::is_same_v<boost::blank, T>) {
          static_assert(std::is_same_v<int64_t, T> || std::is_same_v<double, T> ||
                        std::is_same_v<std::string, T> || std::is_same_v<bool, T>);
          boost::hash_combine(*rex_literal.hash_, current_val);
        }
      },
      rex_literal.literal_);
  boost::hash_combine(*rex_literal.hash_, rex_literal.type_);
  boost::hash_combine(*rex_literal.hash_, rex_literal.target_type_);
  boost::hash_combine(*rex_literal.hash_, rex_literal.scale_);
  boost::hash_combine(*rex_literal.hash_, rex_literal.precision_);
  boost::hash_combine(*rex_literal.hash_, rex_literal.target_scale_);
  boost::hash_combine(*rex_literal.hash_, rex_literal.target_precision_);
  return *rex_literal.hash_;
}

friend struct RelAlgDagSerializer

friend

Definition at line 330 of file RelAlgDag.h.

Member Data Documentation

boost::variant<boost::blank, int64_t, double, std::string, bool> RexLiteral::literal_

private

Definition at line 322 of file RelAlgDag.h.

Referenced by getVal(), and toString().

unsigned RexLiteral::precision_

private

Definition at line 326 of file RelAlgDag.h.

Referenced by getPrecision(), and toString().

unsigned RexLiteral::scale_

private

Definition at line 325 of file RelAlgDag.h.

Referenced by getScale(), and toString().

unsigned RexLiteral::target_precision_

private

Definition at line 328 of file RelAlgDag.h.

Referenced by getTargetPrecision(), and toString().

unsigned RexLiteral::target_scale_

private

Definition at line 327 of file RelAlgDag.h.

Referenced by getTargetScale(), and toString().

SQLTypes RexLiteral::target_type_

private

Definition at line 324 of file RelAlgDag.h.

Referenced by getTargetType(), and toString().

SQLTypes RexLiteral::type_

private

Definition at line 323 of file RelAlgDag.h.

Referenced by getType(), and toString().

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

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