#include <Analyzer.h>

Inheritance diagram for Analyzer::CaseExpr:

Collaboration diagram for Analyzer::CaseExpr:

Public Member Functions
	CaseExpr (const SQLTypeInfo &ti, bool has_agg, const std::list< std::pair< std::shared_ptr< Analyzer::Expr >, std::shared_ptr< Analyzer::Expr >>> &w, std::shared_ptr< Analyzer::Expr > e)

const std::list< std::pair < std::shared_ptr < Analyzer::Expr > , std::shared_ptr < Analyzer::Expr > > > &	get_expr_pair_list () const

const Expr *	get_else_expr () const

std::shared_ptr< Analyzer::Expr >	deep_copy () const override

void	check_group_by (const std::list< std::shared_ptr< Analyzer::Expr >> &groupby) const override

void	group_predicates (std::list< const Expr * > &scan_predicates, std::list< const Expr * > &join_predicates, std::list< const Expr * > &const_predicates) const override

void	collect_rte_idx (std::set< int > &rte_idx_set) const override

void	collect_column_var (std::set< const ColumnVar , bool()(const ColumnVar , const ColumnVar )> &colvar_set, bool include_agg) const override

std::shared_ptr< Analyzer::Expr >	rewrite_with_targetlist (const std::vector< std::shared_ptr< TargetEntry >> &tlist) const override

std::shared_ptr< Analyzer::Expr >	rewrite_with_child_targetlist (const std::vector< std::shared_ptr< TargetEntry >> &tlist) const override

std::shared_ptr< Analyzer::Expr >	rewrite_agg_to_var (const std::vector< std::shared_ptr< TargetEntry >> &tlist) const override

bool	operator== (const Expr &rhs) const override

std::string	toString () const override

void	find_expr (std::function< bool(const Expr )> f, std::list< const Expr > &expr_list) const override

std::shared_ptr< Analyzer::Expr >	add_cast (const SQLTypeInfo &new_type_info) override

void	get_domain (DomainSet &domain_set) const override

Public Member Functions inherited from Analyzer::Expr
	Expr (SQLTypes t, bool notnull)

	Expr (SQLTypes t, int d, bool notnull)

	Expr (SQLTypes t, int d, int s, bool notnull)

	Expr (const SQLTypeInfo &ti, bool has_agg=false)

virtual	~Expr ()

std::shared_ptr< Analyzer::Expr >	get_shared_ptr ()

const SQLTypeInfo &	get_type_info () const

void	set_type_info (const SQLTypeInfo &ti)

bool	get_contains_agg () const

void	set_contains_agg (bool a)

virtual std::shared_ptr < Analyzer::Expr >	normalize_simple_predicate (int &rte_idx) const

virtual size_t	get_num_column_vars (const bool include_agg) const

virtual void	print () const

virtual void	add_unique (std::list< const Expr * > &expr_list) const

std::shared_ptr< Analyzer::Expr >	decompress ()

Private Attributes
std::list< std::pair < std::shared_ptr < Analyzer::Expr > , std::shared_ptr < Analyzer::Expr > > >	expr_pair_list

std::shared_ptr< Analyzer::Expr >	else_expr

Additional Inherited Members
Protected Attributes inherited from Analyzer::Expr
SQLTypeInfo	type_info

bool	contains_agg

Detailed Description

Definition at line 1252 of file Analyzer.h.

Constructor & Destructor Documentation

Analyzer::CaseExpr::CaseExpr	(	const SQLTypeInfo &	ti,
		bool	has_agg,
		const std::list< std::pair< std::shared_ptr< Analyzer::Expr >, std::shared_ptr< Analyzer::Expr >>> &	w,
		std::shared_ptr< Analyzer::Expr >	e
	)

inline

Definition at line 1254 of file Analyzer.h.

1259 : Expr(ti, has_agg), expr_pair_list(w), else_expr(e) {}

Analyzer::Expr::Expr

Expr(SQLTypes t, bool notnull)

Definition: Analyzer.h:70

Analyzer::CaseExpr::expr_pair_list

std::list< std::pair< std::shared_ptr< Analyzer::Expr >, std::shared_ptr< Analyzer::Expr > > > expr_pair_list

Definition: Analyzer.h:1292

Analyzer::CaseExpr::else_expr

std::shared_ptr< Analyzer::Expr > else_expr

Definition: Analyzer.h:1295

Member Function Documentation

std::shared_ptr< Analyzer::Expr > Analyzer::CaseExpr::add_cast ( const SQLTypeInfo & new_type_info )

overridevirtual

Reimplemented from Analyzer::Expr.

Definition at line 1436 of file Analyzer.cpp.

References shared::StringDictKey::dict_id, else_expr, expr_pair_list, SQLTypeInfo::get_comp_param(), SQLTypeInfo::get_compression(), SQLTypeInfo::getStringDictKey(), SQLTypeInfo::is_string(), shared::StringDictKey::isTransientDict(), kENCODING_DICT, kENCODING_NONE, SQLTypeInfo::set_comp_param(), TRANSIENT_DICT, TRANSIENT_DICT_ID, and Analyzer::Expr::type_info.

                                                                                {
   SQLTypeInfo ti = new_type_info;
   if (new_type_info.is_string() && new_type_info.get_compression() == kENCODING_DICT &&
       new_type_info.getStringDictKey().isTransientDict() && type_info.is_string() &&
       type_info.get_compression() == kENCODING_NONE &&
       type_info.getStringDictKey().dict_id > TRANSIENT_DICT_ID) {
     ti.set_comp_param(TRANSIENT_DICT(type_info.get_comp_param()));
   }
 
   std::list<std::pair<std::shared_ptr<Analyzer::Expr>, std::shared_ptr<Analyzer::Expr>>>
       new_expr_pair_list;
   for (auto& p : expr_pair_list) {
     new_expr_pair_list.emplace_back(
         std::make_pair(p.first, p.second->deep_copy()->add_cast(ti)));
   }
 
   if (else_expr != nullptr) {
     else_expr = else_expr->add_cast(ti);
   }
   // Replace the current WHEN THEN pair list once we are sure all casts have succeeded
   expr_pair_list = new_expr_pair_list;
 
   type_info = ti;
   return shared_from_this();
 }

Here is the call graph for this function:

void Analyzer::CaseExpr::check_group_by ( const std::list< std::shared_ptr< Analyzer::Expr >> & groupby ) const

overridevirtual

Reimplemented from Analyzer::Expr.

Definition at line 3438 of file Analyzer.cpp.

References else_expr, and expr_pair_list.

                                                                {
   for (auto p : expr_pair_list) {
     p.first->check_group_by(groupby);
     p.second->check_group_by(groupby);
   }
   if (else_expr != nullptr) {
     else_expr->check_group_by(groupby);
   }
 }

void Analyzer::CaseExpr::collect_column_var	(	std::set< const ColumnVar , bool()(const ColumnVar , const ColumnVar )> &	colvar_set,
		bool	include_agg
	)		const

overridevirtual

Reimplemented from Analyzer::Expr.

Definition at line 3374 of file Analyzer.cpp.

References else_expr, and expr_pair_list.

                             {
   for (auto p : expr_pair_list) {
     p.first->collect_column_var(colvar_set, include_agg);
     p.second->collect_column_var(colvar_set, include_agg);
   }
   if (else_expr != nullptr) {
     else_expr->collect_column_var(colvar_set, include_agg);
   }
 }

void Analyzer::CaseExpr::collect_rte_idx ( std::set< int > & rte_idx_set ) const

overridevirtual

Reimplemented from Analyzer::Expr.

Definition at line 3326 of file Analyzer.cpp.

References else_expr, and expr_pair_list.

                                                              {
   for (auto p : expr_pair_list) {
     p.first->collect_rte_idx(rte_idx_set);
     p.second->collect_rte_idx(rte_idx_set);
   }
   if (else_expr != nullptr) {
     else_expr->collect_rte_idx(rte_idx_set);
   }
 }

std::shared_ptr< Analyzer::Expr > Analyzer::CaseExpr::deep_copy ( ) const

overridevirtual

Implements Analyzer::Expr.

Definition at line 182 of file Analyzer.cpp.

References Analyzer::Expr::contains_agg, else_expr, expr_pair_list, and Analyzer::Expr::type_info.

                                                       {
   std::list<std::pair<std::shared_ptr<Analyzer::Expr>, std::shared_ptr<Analyzer::Expr>>>
       new_list;
   for (auto p : expr_pair_list) {
     new_list.emplace_back(p.first->deep_copy(), p.second->deep_copy());
   }
   return makeExpr<CaseExpr>(type_info,
                             contains_agg,
                             new_list,
                             else_expr == nullptr ? nullptr : else_expr->deep_copy());
 }

void Analyzer::CaseExpr::find_expr	(	std::function< bool(const Expr *)>	f,
		std::list< const Expr * > &	expr_list
	)		const

overridevirtual

Reimplemented from Analyzer::Expr.

Definition at line 3262 of file Analyzer.cpp.

References Analyzer::Expr::add_unique(), else_expr, expr_pair_list, and anonymous_namespace{Utm.h}::f.

                                                                 {
   if (f(this)) {
     add_unique(expr_list);
     return;
   }
   for (auto p : expr_pair_list) {
     p.first->find_expr(f, expr_list);
     p.second->find_expr(f, expr_list);
   }
   if (else_expr != nullptr) {
     else_expr->find_expr(f, expr_list);
   }
 }

Here is the call graph for this function:

void Analyzer::CaseExpr::get_domain ( DomainSet & domain_set ) const

overridevirtual

Reimplemented from Analyzer::Expr.

Definition at line 3471 of file Analyzer.cpp.

References Analyzer::Expr::add_unique(), else_expr, expr_pair_list, and kCAST.

                                                      {
   for (const auto& p : expr_pair_list) {
     const auto c = std::dynamic_pointer_cast<const Constant>(p.second);
     if (c != nullptr) {
       c->add_unique(domain_set);
     } else {
       const auto v = std::dynamic_pointer_cast<const ColumnVar>(p.second);
       if (v != nullptr) {
         v->add_unique(domain_set);
       } else {
         const auto cast = std::dynamic_pointer_cast<const UOper>(p.second);
         if (cast != nullptr && cast->get_optype() == kCAST) {
           const Constant* c = dynamic_cast<const Constant*>(cast->get_operand());
           if (c != nullptr) {
             cast->add_unique(domain_set);
             continue;
           } else {
             const auto v = std::dynamic_pointer_cast<const ColumnVar>(p.second);
             if (v != nullptr) {
               v->add_unique(domain_set);
               continue;
             }
           }
         }
         p.second->get_domain(domain_set);
         if (domain_set.empty()) {
           return;
         }
       }
     }
   }
   if (else_expr != nullptr) {
     const auto c = std::dynamic_pointer_cast<const Constant>(else_expr);
     if (c != nullptr) {
       c->add_unique(domain_set);
     } else {
       const auto v = std::dynamic_pointer_cast<const ColumnVar>(else_expr);
       if (v != nullptr) {
         v->add_unique(domain_set);
       } else {
         const auto cast = std::dynamic_pointer_cast<const UOper>(else_expr);
         if (cast != nullptr && cast->get_optype() == kCAST) {
           const Constant* c = dynamic_cast<const Constant*>(cast->get_operand());
           if (c != nullptr) {
             c->add_unique(domain_set);
           } else {
             const auto v = std::dynamic_pointer_cast<const ColumnVar>(else_expr);
             if (v != nullptr) {
               v->add_unique(domain_set);
             }
           }
         } else {
           else_expr->get_domain(domain_set);
         }
       }
     }
   }
 }

Here is the call graph for this function:

const Expr* Analyzer::CaseExpr::get_else_expr ( ) const

inline

Definition at line 1265 of file Analyzer.h.

References else_expr.

Referenced by CodeGenerator::codegen(), getExpressionRange(), anonymous_namespace{WindowExpressionRewrite.cpp}::matches_else_null(), operator==(), ScalarExprToSql::visitCaseExpr(), DeepCopyVisitor::visitCaseExpr(), and ScalarExprVisitor< std::set< shared::TableKey > >::visitCaseExpr().

1265 { return else_expr.get(); }

Analyzer::CaseExpr::else_expr

std::shared_ptr< Analyzer::Expr > else_expr

Definition: Analyzer.h:1295

Here is the caller graph for this function:

const std::list< std::pair<std::shared_ptr<Analyzer::Expr>, std::shared_ptr<Analyzer::Expr> > >& Analyzer::CaseExpr::get_expr_pair_list ( ) const

inline

Definition at line 1262 of file Analyzer.h.

References expr_pair_list.

Referenced by CodeGenerator::codegenCase(), getExpressionRange(), operator==(), rewrite_sum_window(), ScalarExprToSql::visitCaseExpr(), DeepCopyVisitor::visitCaseExpr(), and ScalarExprVisitor< std::set< shared::TableKey > >::visitCaseExpr().

                              {
     return expr_pair_list;
   }

Here is the caller graph for this function:

void Analyzer::CaseExpr::group_predicates	(	std::list< const Expr * > &	scan_predicates,
		std::list< const Expr * > &	join_predicates,
		std::list< const Expr * > &	const_predicates
	)		const

overridevirtual

Reimplemented from Analyzer::Expr.

Definition at line 1826 of file Analyzer.cpp.

References else_expr, and expr_pair_list.

                                                                               {
   std::set<int> rte_idx_set;
   for (auto p : expr_pair_list) {
     p.first->collect_rte_idx(rte_idx_set);
     p.second->collect_rte_idx(rte_idx_set);
   }
   if (else_expr != nullptr) {
     else_expr->collect_rte_idx(rte_idx_set);
   }
   if (rte_idx_set.size() > 1) {
     join_predicates.push_back(this);
   } else if (rte_idx_set.size() == 1) {
     scan_predicates.push_back(this);
   } else {
     const_predicates.push_back(this);
   }
 }

bool Analyzer::CaseExpr::operator== ( const Expr & rhs ) const

overridevirtual

Implements Analyzer::Expr.

Definition at line 2474 of file Analyzer.cpp.

References else_expr, expr_pair_list, get_else_expr(), and get_expr_pair_list().

                                                {
   if (typeid(rhs) != typeid(CaseExpr)) {
     return false;
   }
   const CaseExpr& rhs_ce = dynamic_cast<const CaseExpr&>(rhs);
   if (expr_pair_list.size() != rhs_ce.get_expr_pair_list().size()) {
     return false;
   }
   if ((else_expr == nullptr && rhs_ce.get_else_expr() != nullptr) ||
       (else_expr != nullptr && rhs_ce.get_else_expr() == nullptr)) {
     return false;
   }
   auto it = rhs_ce.get_expr_pair_list().cbegin();
   for (auto p : expr_pair_list) {
     if (!(*p.first == *it->first) || !(*p.second == *it->second)) {
       return false;
     }
     ++it;
   }
   return else_expr == nullptr ||
          (else_expr != nullptr && *else_expr == *rhs_ce.get_else_expr());
 }

Here is the call graph for this function:

std::shared_ptr< Analyzer::Expr > Analyzer::CaseExpr::rewrite_agg_to_var ( const std::vector< std::shared_ptr< TargetEntry >> & tlist ) const

overridevirtual

Reimplemented from Analyzer::Expr.

Definition at line 2161 of file Analyzer.cpp.

References Analyzer::Expr::contains_agg, else_expr, expr_pair_list, and Analyzer::Expr::type_info.

                                                               {
   std::list<std::pair<std::shared_ptr<Analyzer::Expr>, std::shared_ptr<Analyzer::Expr>>>
       epair_list;
   for (auto p : expr_pair_list) {
     epair_list.emplace_back(p.first->rewrite_agg_to_var(tlist),
                             p.second->rewrite_agg_to_var(tlist));
   }
   return makeExpr<CaseExpr>(type_info,
                             contains_agg,
                             epair_list,
                             else_expr ? else_expr->rewrite_agg_to_var(tlist) : nullptr);
 }

std::shared_ptr< Analyzer::Expr > Analyzer::CaseExpr::rewrite_with_child_targetlist ( const std::vector< std::shared_ptr< TargetEntry >> & tlist ) const

overridevirtual

Reimplemented from Analyzer::Expr.

Definition at line 2118 of file Analyzer.cpp.

References Analyzer::Expr::contains_agg, else_expr, expr_pair_list, and Analyzer::Expr::type_info.

                                                               {
   std::list<std::pair<std::shared_ptr<Analyzer::Expr>, std::shared_ptr<Analyzer::Expr>>>
       epair_list;
   for (auto p : expr_pair_list) {
     epair_list.emplace_back(p.first->rewrite_with_child_targetlist(tlist),
                             p.second->rewrite_with_child_targetlist(tlist));
   }
   return makeExpr<CaseExpr>(
       type_info,
       contains_agg,
       epair_list,
       else_expr ? else_expr->rewrite_with_child_targetlist(tlist) : nullptr);
 }

std::shared_ptr< Analyzer::Expr > Analyzer::CaseExpr::rewrite_with_targetlist ( const std::vector< std::shared_ptr< TargetEntry >> & tlist ) const

overridevirtual

Reimplemented from Analyzer::Expr.

Definition at line 2075 of file Analyzer.cpp.

References Analyzer::Expr::contains_agg, else_expr, expr_pair_list, and Analyzer::Expr::type_info.

                                                               {
   std::list<std::pair<std::shared_ptr<Analyzer::Expr>, std::shared_ptr<Analyzer::Expr>>>
       epair_list;
   for (auto p : expr_pair_list) {
     epair_list.emplace_back(p.first->rewrite_with_targetlist(tlist),
                             p.second->rewrite_with_targetlist(tlist));
   }
   return makeExpr<CaseExpr>(
       type_info,
       contains_agg,
       epair_list,
       else_expr ? else_expr->rewrite_with_targetlist(tlist) : nullptr);
 }

std::string Analyzer::CaseExpr::toString ( ) const

overridevirtual

Implements Analyzer::Expr.

Definition at line 2941 of file Analyzer.cpp.

References else_expr, and expr_pair_list.

                                    {
   std::string str{"CASE "};
   for (auto p : expr_pair_list) {
     str += "(";
     str += p.first->toString();
     str += ", ";
     str += p.second->toString();
     str += ") ";
   }
   if (else_expr) {
     str += "ELSE ";
     str += else_expr->toString();
   }
   str += " END ";
   return str;
 }

Member Data Documentation

std::shared_ptr<Analyzer::Expr> Analyzer::CaseExpr::else_expr

private

Definition at line 1295 of file Analyzer.h.

Referenced by add_cast(), check_group_by(), collect_column_var(), collect_rte_idx(), deep_copy(), find_expr(), get_domain(), get_else_expr(), group_predicates(), operator==(), rewrite_agg_to_var(), rewrite_with_child_targetlist(), rewrite_with_targetlist(), and toString().

std::list<std::pair<std::shared_ptr<Analyzer::Expr>, std::shared_ptr<Analyzer::Expr> > > Analyzer::CaseExpr::expr_pair_list

private

Definition at line 1292 of file Analyzer.h.

Referenced by add_cast(), check_group_by(), collect_column_var(), collect_rte_idx(), deep_copy(), find_expr(), get_domain(), get_expr_pair_list(), group_predicates(), operator==(), rewrite_agg_to_var(), rewrite_with_child_targetlist(), rewrite_with_targetlist(), and toString().

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

/home/jenkins-slave/workspace/core-os-doxygen/Analyzer/Analyzer.h
/home/jenkins-slave/workspace/core-os-doxygen/Analyzer/Analyzer.cpp

Public Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation