#include <RelAlgDag.h>

Inheritance diagram for RelLogicalUnion:

Collaboration diagram for RelLogicalUnion:

Public Member Functions
	RelLogicalUnion ()

	RelLogicalUnion (RelAlgInputs, bool is_all)

virtual void	acceptChildren (Visitor &v) const override

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

std::shared_ptr< RelAlgNode >	deepCopy () const override

size_t	size () const override

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

std::string	getFieldName (const size_t i) const

bool	isAll () const

std::vector< TargetMetaInfo >	getCompatibleMetainfoTypes () const

RexScalar const *	copyAndRedirectSource (RexScalar const *, size_t input_idx) const

virtual size_t	toHash () const override

Public Member Functions inherited from RelAlgNode
	RelAlgNode (RelAlgInputs inputs={})

virtual	~RelAlgNode ()

void	resetQueryExecutionState ()

void	setContextData (const RaExecutionDesc *context_data) const

void	setOutputMetainfo (std::vector< TargetMetaInfo > targets_metainfo) const

void	setQueryPlanDag (const std::string &extracted_query_plan_dag) const

std::string	getQueryPlanDag () const

size_t	getQueryPlanDagHash () const

const std::vector < TargetMetaInfo > &	getOutputMetainfo () const

unsigned	getId () const

bool	hasContextData () const

const RaExecutionDesc *	getContextData () const

const size_t	inputCount () const

const RelAlgNode *	getInput (const size_t idx) const

const std::vector< RelAlgNode const * >	getInputs () const

std::shared_ptr< const RelAlgNode >	getAndOwnInput (const size_t idx) const

void	addManagedInput (std::shared_ptr< const RelAlgNode > input)

bool	hasInput (const RelAlgNode *needle) const

virtual void	replaceInput (std::shared_ptr< const RelAlgNode > old_input, std::shared_ptr< const RelAlgNode > input)

void	setRelNodeDagId (const size_t id) const

size_t	getRelNodeDagId () const

bool	isNop () const

void	markAsNop ()

void	clearContextData () const

Public Member Functions inherited from RelAlgDagNode
	RelAlgDagNode ()

virtual size_t	getStepNumber () const

virtual void	setStepNumber (size_t step) const

std::optional< size_t >	getIdInPlanTree () const

void	setIdInPlanTree (size_t id) const

Public Attributes
std::vector< std::shared_ptr < const RexScalar > >	scalar_exprs_

Private Member Functions
bool	allStringCastsAreToDictionaryEncodedStrings () const

Private Attributes
bool	is_all_

Friends
struct	RelAlgDagSerializer

std::size_t	hash_value (RelLogicalUnion const &)

Additional Inherited Members
Static Public Member Functions inherited from RelAlgNode
static void	resetRelAlgFirstId () noexcept

Protected Attributes inherited from RelAlgNode
RelAlgInputs	inputs_

unsigned	id_

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 2741 of file RelAlgDag.h.

Constructor & Destructor Documentation

RelLogicalUnion::RelLogicalUnion ( )

inline

Definition at line 2744 of file RelAlgDag.h.

2744 : is_all_{false} {}

RelLogicalUnion::is_all_

bool is_all_

Definition: RelAlgDag.h:2784

RelLogicalUnion::RelLogicalUnion	(	RelAlgInputs	inputs,
		bool	is_all
	)

Definition at line 834 of file RelAlgDag.cpp.

References allStringCastsAreToDictionaryEncodedStrings(), CHECK_LE, g_enable_union, RelAlgNode::inputs_, and is_all_.

     : RelAlgNode(std::move(inputs)), is_all_(is_all) {
   if (!g_enable_union) {
     throw QueryNotSupported(
         "The DEPRECATED enable-union option is set to off. Please remove this option as "
         "it may be disabled in the future.");
   }
   CHECK_LE(2u, inputs_.size());
   if (!is_all_) {
     throw QueryNotSupported("UNION without ALL is not supported yet.");
   }
   if (!allStringCastsAreToDictionaryEncodedStrings()) {
     throw QueryNotSupported(
         "Unsupported CAST in UNION: Currently, we only allow casting text type to "
         "dictionary-encoded strings.");
   }
 }

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Member Function Documentation

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

inlineoverridevirtual

Implements RelAlgDagNode.

Definition at line 2755 of file RelAlgDag.h.

References 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 RelLogicalUnion::acceptChildren ( Visitor & v ) const

inlineoverridevirtual

Implements RelAlgDagNode.

Definition at line 2748 of file RelAlgDag.h.

References RelAlgNode::getInputs(), and anonymous_namespace{Utm.h}::n.

Referenced by accept().

                                                          {
     for (auto& n : getInputs()) {
       if (n) {
         n->accept(v, "input");
       }
     }
   }

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bool RelLogicalUnion::allStringCastsAreToDictionaryEncodedStrings ( ) const

private

Definition at line 955 of file RelAlgDag.cpp.

References RelAlgNode::inputs_, and kCAST.

Referenced by RelLogicalUnion().

                                                                         {
   for (auto const& input : inputs_) {
     if (auto* proj_node = dynamic_cast<RelProject const*>(input.get())) {
       for (size_t i = 0; i < proj_node->size(); i++) {
         if (auto* oper = dynamic_cast<RexOperator const*>(proj_node->getProjectAt(i))) {
           if (oper->getOperator() == SQLOps::kCAST && oper->getType().is_string() &&
               !oper->getType().is_dict_encoded_string()) {
             return false;
           }
         }
       }
     }
   }
   return true;
 }

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RexScalar const * RelLogicalUnion::copyAndRedirectSource	(	RexScalar const *	rex_scalar,
		size_t	input_idx
	)		const

Definition at line 944 of file RelAlgDag.cpp.

References RelAlgNode::getInput(), scalar_exprs_, and RexInput::setSourceNode().

                                                                                 {
   if (auto const* rex_input_ptr = dynamic_cast<RexInput const*>(rex_scalar)) {
     RexInput rex_input(*rex_input_ptr);
     rex_input.setSourceNode(getInput(input_idx));
     scalar_exprs_.emplace_back(std::make_shared<RexInput const>(std::move(rex_input)));
     return scalar_exprs_.back().get();
   }
   return rex_scalar;
 }

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std::shared_ptr<RelAlgNode> RelLogicalUnion::deepCopy ( ) const

inlineoverridevirtual

Implements RelAlgNode.

Definition at line 2761 of file RelAlgDag.h.

                                                       {
     return std::make_shared<RelLogicalUnion>(*this);
   }

std::vector< TargetMetaInfo > RelLogicalUnion::getCompatibleMetainfoTypes ( ) const

Definition at line 911 of file RelAlgDag.cpp.

References SQLTypeInfo::get_notnull(), anonymous_namespace{RelAlgDag.cpp}::get_notnulls(), logger::INFO, RelAlgNode::inputs_, SQLTypeInfo::is_dict_encoded_string(), LOG, anonymous_namespace{RelAlgDag.cpp}::same_ignoring_notnull(), anonymous_namespace{RelAlgDag.cpp}::set_notnulls(), and SQLTypeInfo::to_string().

Referenced by RelAlgExecutor::executeUnion().

                                                                             {
   std::vector<TargetMetaInfo> tmis0 = inputs_[0]->getOutputMetainfo();
   std::vector<bool> notnulls = get_notnulls(tmis0);
   for (size_t i = 1; i < inputs_.size(); ++i) {
     std::vector<TargetMetaInfo> const& tmisi = inputs_[i]->getOutputMetainfo();
     if (tmis0.size() != tmisi.size()) {
       LOG(INFO) << "tmis0.size()=" << tmis0.size() << " != " << tmisi.size()
                 << "=tmisi.size() for i=" << i;
       throw std::runtime_error("Subqueries of a UNION must have matching data types.");
     }
     for (size_t j = 0; j < tmis0.size(); ++j) {
       SQLTypeInfo const& ti0 = tmis0[j].get_type_info();
       SQLTypeInfo const& ti1 = tmisi[j].get_type_info();
       // Allow types of different nullability to be UNIONed.
       if (!same_ignoring_notnull(ti0, ti1)) {
         LOG(INFO) << "Types do not match for UNION:\n  tmis0[" << j
                   << "].get_type_info().to_string() = " << ti0.to_string() << "\n  tmis"
                   << i << '[' << j
                   << "].get_type_info().to_string() = " << ti1.to_string();
         // The only permitted difference is when both columns are dictionary-encoded.
         if (!(ti0.is_dict_encoded_string() && ti1.is_dict_encoded_string())) {
           throw std::runtime_error(
               "Subqueries of a UNION must have the exact same data types.");
         }
       }
       notnulls[j] = notnulls[j] && ti1.get_notnull();
     }
   }
   set_notnulls(&tmis0, notnulls);  // Set each SQLTypeInfo::notnull to compatible values.
   return tmis0;
 }

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std::string RelLogicalUnion::getFieldName ( const size_t i ) const

Definition at line 860 of file RelAlgDag.cpp.

References RelAlgNode::inputs_, toString(), and UNREACHABLE.

                                                             {
   if (auto const* compound = dynamic_cast<RelCompound const*>(inputs_[0].get())) {
     return compound->getFieldName(i);
   } else if (auto const* project = dynamic_cast<RelProject const*>(inputs_[0].get())) {
     return project->getFieldName(i);
   } else if (auto const* logical_union =
                  dynamic_cast<RelLogicalUnion const*>(inputs_[0].get())) {
     return logical_union->getFieldName(i);
   } else if (auto const* aggregate =
                  dynamic_cast<RelAggregate const*>(inputs_[0].get())) {
     return aggregate->getFieldName(i);
   } else if (auto const* scan = dynamic_cast<RelScan const*>(inputs_[0].get())) {
     return scan->getFieldName(i);
   } else if (auto const* table_func =
                  dynamic_cast<RelTableFunction const*>(inputs_[0].get())) {
     return table_func->getFieldName(i);
   }
   UNREACHABLE() << "Unhandled input type: " << ::toString(inputs_.front());
   return {};
 }

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bool RelLogicalUnion::isAll ( ) const

inline

Definition at line 2770 of file RelAlgDag.h.

References is_all_.

Referenced by RelAlgExecutor::createUnionWorkUnit(), and RelAlgExecutor::executeUnion().

2770 { return is_all_; }

RelLogicalUnion::is_all_

bool is_all_

Definition: RelAlgDag.h:2784

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size_t RelLogicalUnion::size ( ) const

overridevirtual

Implements RelAlgNode.

Definition at line 852 of file RelAlgDag.cpp.

References RelAlgNode::inputs_.

                                    {
   return inputs_.front()->size();
 }

virtual size_t RelLogicalUnion::toHash ( ) const

inlineoverridevirtual

Implements RelAlgNode.

Definition at line 2778 of file RelAlgDag.h.

References hash_value.

2778 { return hash_value(*this); }

RelLogicalUnion::hash_value

friend std::size_t hash_value(RelLogicalUnion const &)

Definition: RelAlgDag.cpp:3844

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

overridevirtual

Implements RelAlgNode.

Definition at line 856 of file RelAlgDag.cpp.

References cat(), is_all_, and typeName().

Referenced by getFieldName().

                                                                      {
   return cat(::typeName(this), "(is_all(", is_all_, "))");
 }

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Friends And Related Function Documentation

std::size_t hash_value ( RelLogicalUnion const & rel_lv )

friend

Definition at line 3844 of file RelAlgDag.cpp.

Referenced by toHash().

                                                     {
   if (rel_lv.hash_) {
     return *rel_lv.hash_;
   }
   rel_lv.hash_ = typeid(RelLogicalUnion).hash_code();
   boost::hash_combine(*rel_lv.hash_, rel_lv.is_all_);
   boost::hash_combine(*rel_lv.hash_, rel_lv.inputs_);
   return *rel_lv.hash_;
 }

friend struct RelAlgDagSerializer

friend

Definition at line 2786 of file RelAlgDag.h.

Member Data Documentation

bool RelLogicalUnion::is_all_

private

Definition at line 2784 of file RelAlgDag.h.

Referenced by hash_value(), isAll(), RelLogicalUnion(), and toString().

std::vector<std::shared_ptr<const RexScalar> > RelLogicalUnion::scalar_exprs_

mutable

Definition at line 2776 of file RelAlgDag.h.

Referenced by copyAndRedirectSource().

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

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

Public Member Functions

Public Attributes

Private Member Functions

Private Attributes

Friends

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Friends And Related Function Documentation

Member Data Documentation