Find a tuple in a relation such that a given condition holds. More...

#include <Choice.h>

Inheritance diagram for souffle::ram::Choice:

Collaboration diagram for souffle::ram::Choice:

Public Member Functions
void	apply (const NodeMapper &map) override
	Apply the mapper to all child nodes. More...

	Choice (std::string rel, size_t ident, Own< Condition > cond, Own< Operation > nested, std::string profileText="")

Choice *	clone () const override
	Create a clone (i.e. More...

std::vector< const Node * >	getChildNodes () const override
	Obtain list of all embedded child nodes. More...

Public Member Functions inherited from souffle::ram::RelationOperation
const std::string &	getRelation () const
	Get search relation. More...

	RelationOperation (std::string rel, int ident, Own< Operation > nested, std::string profileText="")

Public Member Functions inherited from souffle::ram::TupleOperation
std::vector< const Node * >	getChildNodes () const override
	Obtain list of all embedded child nodes. More...

int	getTupleId () const
	Get identifier. More...

void	setTupleId (int id)
	Set identifier. More...

	TupleOperation (int ident, Own< Operation > nested, std::string profileText="")

Public Member Functions inherited from souffle::ram::NestedOperation
void	apply (const NodeMapper &map) override
	Apply the mapper to all child nodes. More...

Operation &	getOperation () const
	Get nested operation. More...

const std::string &	getProfileText () const
	Get profile text. More...

	NestedOperation (Own< Operation > nested, std::string profileText="")

Public Member Functions inherited from souffle::ram::Node
bool	operator!= (const Node &other) const
	Inequality check for two RAM nodes. More...

bool	operator== (const Node &other) const
	Equivalence check for two RAM nodes. More...

virtual void	rewrite (const Node *oldNode, Own< Node > newNode)
	Rewrite a child node. More...

virtual	~Node ()=default

Public Member Functions inherited from souffle::ram::AbstractChoice
	AbstractChoice (Own< Condition > cond)

void	apply (const NodeMapper &map)

std::vector< const Node * >	getChildNodes () const

const Condition &	getCondition () const
	Getter for the condition. More...

Protected Member Functions
bool	equal (const Node &node) const override
	Equality check for two RAM nodes. More...

void	print (std::ostream &os, int tabpos) const override
	Pretty print with indentation. More...

Protected Member Functions inherited from souffle::ram::RelationOperation
bool	equal (const Node &node) const override
	Equality check for two RAM nodes. More...

Protected Member Functions inherited from souffle::ram::TupleOperation
bool	equal (const Node &node) const override
	Equality check for two RAM nodes. More...

Protected Member Functions inherited from souffle::ram::NestedOperation
void	print (std::ostream &os, int tabpos) const override
	Pretty print with indentation. More...

Protected Member Functions inherited from souffle::ram::Operation
void	print (std::ostream &os) const override
	Print RAM node. More...

Protected Member Functions inherited from souffle::ram::AbstractChoice
bool	equal (const Node &node) const

Additional Inherited Members
Static Protected Member Functions inherited from souffle::ram::Operation
static void	print (const Operation *operation, std::ostream &os, int tabpos)
	Pretty print jump-bed. More...

Protected Attributes inherited from souffle::ram::RelationOperation
const std::string	relation
	Search relation. More...

Protected Attributes inherited from souffle::ram::TupleOperation
int	identifier
	Identifier for the tuple, corresponding to its position in the loop nest. More...

Protected Attributes inherited from souffle::ram::NestedOperation
Own< Operation >	nestedOperation
	Nested operation. More...

const std::string	profileText
	Text used by the profiler. More...

Protected Attributes inherited from souffle::ram::AbstractChoice
Own< Condition >	condition
	Condition for which a tuple in the relation may hold. More...

Detailed Description

Find a tuple in a relation such that a given condition holds.

Only one tuple is returned (if one exists), even if multiple tuples satisfying the condition exist.

For example:

QUERY
 ...
  CHOICE t1 IN A WHERE (t1.x, t1.y) NOT IN A
    ...

Definition at line 59 of file Choice.h.

Constructor & Destructor Documentation

◆ Choice()

souffle::ram::Choice::Choice	(	std::string	rel,
		size_t	ident,
		Own< Condition >	cond,
		Own< Operation >	nested,
		std::string	profileText = `""`
	)

inline

Definition at line 61 of file Choice.h.

65 {

Member Function Documentation

◆ apply()

void souffle::ram::Choice::apply ( const NodeMapper & )

inlineoverridevirtual

Apply the mapper to all child nodes.

Reimplemented from souffle::ram::Node.

Definition at line 66 of file Choice.h.

◆ clone()

Choice* souffle::ram::Choice::clone ( ) const

inlineoverridevirtual

Create a clone (i.e.

deep copy) of this node

Implements souffle::ram::RelationOperation.

Reimplemented in souffle::ram::ParallelChoice.

Definition at line 71 of file Choice.h.

                {nestedOperation.get(), AbstractChoice::getChildNodes().at(0)};
     }
  
 protected:

References souffle::ram::AbstractChoice::getChildNodes(), and souffle::ram::NestedOperation::nestedOperation.

Here is the call graph for this function:

◆ equal()

bool souffle::ram::Choice::equal ( const Node & ) const

inlineoverrideprotectedvirtual

Equality check for two RAM nodes.

Default action is that nothing needs to be checked.

Reimplemented from souffle::ram::Node.

Definition at line 90 of file Choice.h.

◆ getChildNodes()

std::vector<const Node*> souffle::ram::Choice::getChildNodes ( ) const

inlineoverridevirtual

Obtain list of all embedded child nodes.

Reimplemented from souffle::ram::Node.

Definition at line 76 of file Choice.h.

◆ print()

void souffle::ram::Choice::print	(	std::ostream &	os,
		int	tabpos
	)		const

inlineoverrideprotectedvirtual

Pretty print with indentation.

Implements souffle::ram::Operation.

Reimplemented in souffle::ram::ParallelChoice.

Definition at line 81 of file Choice.h.

                                                 {
         const auto& other = static_cast<const Choice&>(node);
         return RelationOperation::equal(other) && AbstractChoice::equal(other);
     }
 };

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

ram/Choice.h

Public Member Functions

Protected Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ Choice()

Member Function Documentation

◆ apply()

◆ clone()

◆ equal()

◆ getChildNodes()

◆ print()