souffle::ram::Project Class Reference

Project a result into the target relation. More...

#include <Project.h>

Inheritance diagram for souffle::ram::Project:

Collaboration diagram for souffle::ram::Project:

Public Member Functions
void	apply (const NodeMapper &map) override
	Apply the mapper to all child nodes. More...
Project *	clone () const override
	Create a clone (i.e. More...
std::vector< const Node * >	getChildNodes () const override
	Obtain list of all embedded child nodes. More...
const std::string &	getRelation () const
	Get relation. More...
std::vector< Expression * >	getValues () const
	Get expressions. More...
	Project (std::string rel, VecOwn< Expression > expressions)
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

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::Operation
void	print (std::ostream &os) const override
	Print RAM node. More...

Protected Attributes
VecOwn< Expression >	expressions
std::string	relation
	Relation name. More...

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...

Detailed Description

Project a result into the target relation.

For example:

FOR t0 IN A
  ...
    PROJECT (t0.a, t0.b, t0.c) INTO @new_X

Definition at line 50 of file Project.h.

Constructor & Destructor Documentation

Project()

souffle::ram::Project::Project ( std::string  rel, VecOwn< Expression >  expressions  )

inline

Definition at line 52 of file Project.h.

                                         {
        return relation;

Member Function Documentation

apply()

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

inlineoverridevirtual

Apply the mapper to all child nodes.

Reimplemented from souffle::ram::Node.

Definition at line 85 of file Project.h.

         :
    void print(std::ostream& os, int tabpos) const override {
        os << times(" ", tabpos);

clone()

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

inlineoverridevirtual

Create a clone (i.e.

deep copy) of this node

Implements souffle::ram::Operation.

Definition at line 77 of file Project.h.

                                               {
        for (auto& expr : expressions) {
            expr = map(std::move(expr));

equal()

bool souffle::ram::Project::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 98 of file Project.h.

getChildNodes()

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

inlineoverridevirtual

Obtain list of all embedded child nodes.

Reimplemented from souffle::ram::Node.

Definition at line 69 of file Project.h.

                                    {
        VecOwn<Expression> newValues;
        for (auto& expr : expressions) {

getRelation()

const std::string& souffle::ram::Project::getRelation ( ) const

inline

Get relation.

Definition at line 60 of file Project.h.

                                             {
        return toPtrVector(expressions);

References expressions, and souffle::toPtrVector().

Here is the call graph for this function:

getValues()

std::vector<Expression*> souffle::ram::Project::getValues ( ) const

inline

Get expressions.

Definition at line 65 of file Project.h.

                                                          {
        std::vector<const Node*> res;
        for (const auto& expr : expressions) {

References expressions.

print()

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

inlineoverrideprotectedvirtual

Pretty print with indentation.

Implements souffle::ram::Operation.

Definition at line 92 of file Project.h.

                                                {
        const auto& other = static_cast<const Project&>(node);
        return relation == other.relation && equal_targets(expressions, other.expressions);

Field Documentation

expressions

VecOwn<Expression> souffle::ram::Project::expressions

protected

Definition at line 107 of file Project.h.

Referenced by getRelation(), and getValues().

relation

std::string souffle::ram::Project::relation

protected

Relation name.

Definition at line 104 of file Project.h.

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

• ram/Project.h