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Analyzer::StringOper Class Reference

Expression class for string functions The "arg" constructor parameter must be an expression that resolves to a string datatype (e.g. TEXT). More...

#include <Analyzer.h>

+ Inheritance diagram for Analyzer::StringOper:
+ Collaboration diagram for Analyzer::StringOper:

Public Types

enum  OperandTypeFamily { OperandTypeFamily::STRING_FAMILY, OperandTypeFamily::INT_FAMILY }
 
using LiteralArgMap = std::map< size_t, std::pair< SQLTypes, Datum >>
 

Public Member Functions

 StringOper (const SqlStringOpKind kind, const std::vector< std::shared_ptr< Analyzer::Expr >> &args)
 
 StringOper (const SqlStringOpKind kind, const SQLTypeInfo &return_ti, const std::vector< std::shared_ptr< Analyzer::Expr >> &args)
 
 StringOper (const SqlStringOpKind kind, const std::vector< std::shared_ptr< Analyzer::Expr >> &args, const size_t min_args, const std::vector< OperandTypeFamily > &expected_type_families, const std::vector< std::string > &arg_names)
 
 StringOper (const SqlStringOpKind kind, const SQLTypeInfo &return_ti, const std::vector< std::shared_ptr< Analyzer::Expr >> &args, const size_t min_args, const std::vector< OperandTypeFamily > &expected_type_families, const std::vector< std::string > &arg_names)
 
 StringOper (const SqlStringOpKind kind, const SQLTypeInfo &return_ti, const std::vector< std::shared_ptr< Analyzer::Expr >> &args, const std::vector< std::shared_ptr< Analyzer::Expr >> &chained_string_op_exprs)
 
 StringOper (const StringOper &other_string_oper)
 
 StringOper (const std::shared_ptr< StringOper > &other_string_oper)
 
SqlStringOpKind get_kind () const
 
size_t getArity () const
 
size_t getLiteralsArity () const
 
size_t getNonLiteralsArity () const
 
const ExprgetArg (const size_t i) const
 
std::shared_ptr< Analyzer::ExprgetOwnArg (const size_t i) const
 
std::vector< std::shared_ptr
< Analyzer::Expr > > 
getOwnArgs () const
 
std::vector< std::shared_ptr
< Analyzer::Expr > > 
getChainedStringOpExprs () const
 
bool requiresPerRowTranslation () const
 
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
 
bool hasNoneEncodedTextArg () const
 
bool hasSingleDictEncodedColInput () const
 returns whether we have one and only one column involved in this StringOper and all its descendents, and that that column is a dictionary-encoded text type More...
 
std::vector< size_t > getLiteralArgIndexes () const
 
LiteralArgMap getLiteralArgs () const
 
std::shared_ptr< Analyzer::Exprrewrite_with_targetlist (const std::vector< std::shared_ptr< TargetEntry >> &tlist) const override
 
std::shared_ptr< Analyzer::Exprrewrite_with_child_targetlist (const std::vector< std::shared_ptr< TargetEntry >> &tlist) const override
 
std::shared_ptr< Analyzer::Exprrewrite_agg_to_var (const std::vector< std::shared_ptr< TargetEntry >> &tlist) const override
 
std::shared_ptr< Analyzer::Exprdeep_copy () 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
 
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
 
virtual size_t getMinArgs () const
 
virtual std::vector
< OperandTypeFamily
getExpectedTypeFamilies () const
 
virtual std::vector< std::string > getArgNames () const
 
- 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::Exprget_shared_ptr ()
 
const SQLTypeInfoget_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
add_cast (const SQLTypeInfo &new_type_info)
 
virtual void check_group_by (const std::list< std::shared_ptr< Analyzer::Expr >> &groupby) const
 
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::Exprdecompress ()
 
virtual void get_domain (DomainSet &domain_set) const
 

Private Member Functions

void check_operand_types (const size_t min_args, const std::vector< OperandTypeFamily > &expected_type_families, const std::vector< std::string > &arg_names, const bool dict_encoded_cols_only=false, const bool cols_first_arg_only=true) const
 

Static Private Member Functions

static SQLTypeInfo get_return_type (const SqlStringOpKind kind, const std::vector< std::shared_ptr< Analyzer::Expr >> &args)
 

Private Attributes

SqlStringOpKind kind_
 
std::vector< std::shared_ptr
< Analyzer::Expr > > 
args_
 
std::vector< std::shared_ptr
< Analyzer::Expr > > 
chained_string_op_exprs_
 

Additional Inherited Members

- Protected Attributes inherited from Analyzer::Expr
SQLTypeInfo type_info
 
bool contains_agg
 

Detailed Description

Expression class for string functions The "arg" constructor parameter must be an expression that resolves to a string datatype (e.g. TEXT).

Definition at line 1601 of file Analyzer.h.

Member Typedef Documentation

using Analyzer::StringOper::LiteralArgMap = std::map<size_t, std::pair<SQLTypes, Datum>>

Definition at line 1765 of file Analyzer.h.

Member Enumeration Documentation

Enumerator
STRING_FAMILY 
INT_FAMILY 

Definition at line 1605 of file Analyzer.h.

1605 { STRING_FAMILY, INT_FAMILY };

Constructor & Destructor Documentation

Analyzer::StringOper::StringOper ( const SqlStringOpKind  kind,
const std::vector< std::shared_ptr< Analyzer::Expr >> &  args 
)
inline

Definition at line 1607 of file Analyzer.h.

1609  : Expr(StringOper::get_return_type(kind, args)), kind_(kind), args_(args) {}
Expr(SQLTypes t, bool notnull)
Definition: Analyzer.h:70
static SQLTypeInfo get_return_type(const SqlStringOpKind kind, const std::vector< std::shared_ptr< Analyzer::Expr >> &args)
Definition: Analyzer.cpp:4286
std::vector< std::shared_ptr< Analyzer::Expr > > args_
Definition: Analyzer.h:1816
SqlStringOpKind kind_
Definition: Analyzer.h:1815
Analyzer::StringOper::StringOper ( const SqlStringOpKind  kind,
const SQLTypeInfo return_ti,
const std::vector< std::shared_ptr< Analyzer::Expr >> &  args 
)
inline

Definition at line 1611 of file Analyzer.h.

1614  : Expr(return_ti), kind_(kind), args_(args) {}
Expr(SQLTypes t, bool notnull)
Definition: Analyzer.h:70
std::vector< std::shared_ptr< Analyzer::Expr > > args_
Definition: Analyzer.h:1816
SqlStringOpKind kind_
Definition: Analyzer.h:1815
Analyzer::StringOper::StringOper ( const SqlStringOpKind  kind,
const std::vector< std::shared_ptr< Analyzer::Expr >> &  args,
const size_t  min_args,
const std::vector< OperandTypeFamily > &  expected_type_families,
const std::vector< std::string > &  arg_names 
)
inline

Definition at line 1616 of file Analyzer.h.

References check_operand_types(), CONCAT, and RCONCAT.

1621  : Expr(StringOper::get_return_type(kind, args)), kind_(kind), args_(args) {
1622  check_operand_types(min_args,
1623  expected_type_families,
1624  arg_names,
1625  false /* dict_encoded_cols_only */,
1626  !(kind == SqlStringOpKind::CONCAT ||
1627  kind == SqlStringOpKind::RCONCAT) /* cols_first_arg_only */);
1628  }
Expr(SQLTypes t, bool notnull)
Definition: Analyzer.h:70
void check_operand_types(const size_t min_args, const std::vector< OperandTypeFamily > &expected_type_families, const std::vector< std::string > &arg_names, const bool dict_encoded_cols_only=false, const bool cols_first_arg_only=true) const
Definition: Analyzer.cpp:4322
static SQLTypeInfo get_return_type(const SqlStringOpKind kind, const std::vector< std::shared_ptr< Analyzer::Expr >> &args)
Definition: Analyzer.cpp:4286
std::vector< std::shared_ptr< Analyzer::Expr > > args_
Definition: Analyzer.h:1816
SqlStringOpKind kind_
Definition: Analyzer.h:1815

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Analyzer::StringOper::StringOper ( const SqlStringOpKind  kind,
const SQLTypeInfo return_ti,
const std::vector< std::shared_ptr< Analyzer::Expr >> &  args,
const size_t  min_args,
const std::vector< OperandTypeFamily > &  expected_type_families,
const std::vector< std::string > &  arg_names 
)
inline

Definition at line 1630 of file Analyzer.h.

References check_operand_types(), CONCAT, and RCONCAT.

1636  : Expr(return_ti), kind_(kind), args_(args) {
1637  check_operand_types(min_args,
1638  expected_type_families,
1639  arg_names,
1640  false /* dict_encoded_cols_only */,
1641  !(kind == SqlStringOpKind::CONCAT ||
1642  kind == SqlStringOpKind::RCONCAT) /* cols_first_arg_only */);
1643  }
Expr(SQLTypes t, bool notnull)
Definition: Analyzer.h:70
void check_operand_types(const size_t min_args, const std::vector< OperandTypeFamily > &expected_type_families, const std::vector< std::string > &arg_names, const bool dict_encoded_cols_only=false, const bool cols_first_arg_only=true) const
Definition: Analyzer.cpp:4322
std::vector< std::shared_ptr< Analyzer::Expr > > args_
Definition: Analyzer.h:1816
SqlStringOpKind kind_
Definition: Analyzer.h:1815

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Analyzer::StringOper::StringOper ( const SqlStringOpKind  kind,
const SQLTypeInfo return_ti,
const std::vector< std::shared_ptr< Analyzer::Expr >> &  args,
const std::vector< std::shared_ptr< Analyzer::Expr >> &  chained_string_op_exprs 
)
inline

Definition at line 1645 of file Analyzer.h.

1649  : Expr(return_ti)
1650  , kind_(kind)
1651  , args_(args)
1652  , chained_string_op_exprs_(chained_string_op_exprs) {}
Expr(SQLTypes t, bool notnull)
Definition: Analyzer.h:70
std::vector< std::shared_ptr< Analyzer::Expr > > chained_string_op_exprs_
Definition: Analyzer.h:1817
std::vector< std::shared_ptr< Analyzer::Expr > > args_
Definition: Analyzer.h:1816
SqlStringOpKind kind_
Definition: Analyzer.h:1815
Analyzer::StringOper::StringOper ( const StringOper other_string_oper)
inline

Definition at line 1654 of file Analyzer.h.

References args_, chained_string_op_exprs_, and kind_.

1655  : Expr(other_string_oper.get_type_info()) {
1656  kind_ = other_string_oper.kind_;
1657  args_ = other_string_oper.args_;
1658  chained_string_op_exprs_ = other_string_oper.chained_string_op_exprs_;
1659  }
Expr(SQLTypes t, bool notnull)
Definition: Analyzer.h:70
std::vector< std::shared_ptr< Analyzer::Expr > > chained_string_op_exprs_
Definition: Analyzer.h:1817
std::vector< std::shared_ptr< Analyzer::Expr > > args_
Definition: Analyzer.h:1816
SqlStringOpKind kind_
Definition: Analyzer.h:1815
Analyzer::StringOper::StringOper ( const std::shared_ptr< StringOper > &  other_string_oper)
inline

Definition at line 1661 of file Analyzer.h.

References args_, chained_string_op_exprs_, and kind_.

1662  : Expr(other_string_oper->get_type_info()) {
1663  kind_ = other_string_oper->kind_;
1664  args_ = other_string_oper->args_;
1665  chained_string_op_exprs_ = other_string_oper->chained_string_op_exprs_;
1666  }
Expr(SQLTypes t, bool notnull)
Definition: Analyzer.h:70
std::vector< std::shared_ptr< Analyzer::Expr > > chained_string_op_exprs_
Definition: Analyzer.h:1817
std::vector< std::shared_ptr< Analyzer::Expr > > args_
Definition: Analyzer.h:1816
SqlStringOpKind kind_
Definition: Analyzer.h:1815

Member Function Documentation

void Analyzer::StringOper::check_operand_types ( const size_t  min_args,
const std::vector< OperandTypeFamily > &  expected_type_families,
const std::vector< std::string > &  arg_names,
const bool  dict_encoded_cols_only = false,
const bool  cols_first_arg_only = true 
) const
private

Definition at line 4322 of file Analyzer.cpp.

References args_, CHECK_EQ, g_enable_string_functions, get_kind(), Analyzer::Expr::get_type_info(), INT_FAMILY, IS_INTEGER, remove_cast(), STRING_FAMILY, and toString().

Referenced by StringOper().

4327  {
4328  std::ostringstream oss;
4330  oss << "Function " << ::toString(get_kind()) << " not supported.";
4331  throw std::runtime_error(oss.str());
4332  }
4333  const size_t num_args = args_.size();
4334  CHECK_EQ(expected_type_families.size(), arg_names.size());
4335  if (num_args < min_args || num_args > expected_type_families.size()) {
4336  oss << "Error instantiating " << ::toString(get_kind()) << " operator. ";
4337  oss << "Expected " << expected_type_families.size() << " arguments, but received "
4338  << num_args << ".";
4339  }
4340  for (size_t arg_idx = 0; arg_idx < num_args; ++arg_idx) {
4341  const auto& expected_type_family = expected_type_families[arg_idx];
4342  // We need to remove any casts that Calcite may add to try the right operand type,
4343  // even if we don't support them. Need to check how this works with casts we do
4344  // support.
4345  auto arg_ti = args_[arg_idx]->get_type_info();
4346  const auto decasted_arg = remove_cast(args_[arg_idx]);
4347  const bool is_arg_case =
4348  dynamic_cast<const Analyzer::CaseExpr*>(decasted_arg.get()) != nullptr;
4349  if (is_arg_case) {
4350  oss << "Error instantiating " << ::toString(get_kind()) << " operator. "
4351  << "Currently string operations cannot be run on output of a case "
4352  << "statement.";
4353  throw std::runtime_error(oss.str());
4354  }
4355  const bool is_arg_constant =
4356  dynamic_cast<const Analyzer::Constant*>(decasted_arg.get()) != nullptr;
4357  auto decasted_arg_ti = decasted_arg->get_type_info();
4358  // We need to prevent any non-string type from being casted to a string, but can
4359  // permit non-integer types being casted to integers Todo: Find a cleaner way to
4360  // handle this (we haven't validated any of the casts that calcite has given us at
4361  // the point of RelAlgTranslation)
4362  if (arg_ti != decasted_arg_ti &&
4363  (arg_ti.is_integer() && decasted_arg_ti.is_string())) {
4364  arg_ti = decasted_arg_ti;
4365  }
4366 
4367  if (cols_first_arg_only && !is_arg_constant && arg_idx >= 1UL) {
4368  oss << "Error instantiating " << ::toString(get_kind()) << " operator. "
4369  << "Currently only column inputs are allowed for argument '" << arg_names[0]
4370  << "', but a column input was received for argument '" << arg_names[arg_idx]
4371  << "'.";
4372  throw std::runtime_error(oss.str());
4373  }
4374  switch (expected_type_family) {
4376  if (!arg_ti.is_string()) {
4377  oss << "Error instantiating " << ::toString(get_kind()) << " operator. "
4378  << "Expected text type for argument '" << arg_names[arg_idx] << "'";
4379  throw std::runtime_error(oss.str());
4380  break;
4381  }
4382  if (dict_encoded_cols_only &&
4383  (!is_arg_constant && !arg_ti.is_dict_encoded_string())) {
4384  oss << "Error instantiating " << ::toString(get_kind()) << " operator. "
4385  << "Currently only text-encoded dictionary-encoded column inputs are "
4386  << "allowed, but a none-encoded text column argument was received.";
4387  throw std::runtime_error(oss.str());
4388  break;
4389  }
4390  break;
4391  }
4393  if (!IS_INTEGER(arg_ti.get_type())) {
4394  oss << "Error instantiating " << ::toString(get_kind()) << " operator. "
4395  << "Expected integer type for argument " << arg_idx + 1 << " ('"
4396  << arg_names[arg_idx] << "').";
4397  throw std::runtime_error(oss.str());
4398  break;
4399  }
4400  if (!is_arg_constant) {
4401  oss << "Error instantiating " << ::toString(get_kind()) << " operator. "
4402  << "Currently only text-encoded dictionary column inputs are "
4403  << "allowed, but an integer-type column was provided.";
4404  throw std::runtime_error(oss.str());
4405  break;
4406  }
4407  break;
4408  }
4409  }
4410  }
4411 }
#define CHECK_EQ(x, y)
Definition: Logger.h:301
std::shared_ptr< Analyzer::Expr > remove_cast(const std::shared_ptr< Analyzer::Expr > &expr)
Definition: Analyzer.cpp:4533
bool g_enable_string_functions
const SQLTypeInfo & get_type_info() const
Definition: Analyzer.h:79
std::vector< std::shared_ptr< Analyzer::Expr > > args_
Definition: Analyzer.h:1816
SqlStringOpKind get_kind() const
Definition: Analyzer.h:1668
#define IS_INTEGER(T)
Definition: sqltypes.h:304
std::string toString() const override
Definition: Analyzer.cpp:3853

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void Analyzer::StringOper::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 3572 of file Analyzer.cpp.

References args_.

Referenced by hasSingleDictEncodedColInput().

3574  {
3575  for (const auto& arg : args_) {
3576  arg->collect_column_var(colvar_set, include_agg);
3577  }
3578 }
std::vector< std::shared_ptr< Analyzer::Expr > > args_
Definition: Analyzer.h:1816

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

Reimplemented from Analyzer::Expr.

Definition at line 3512 of file Analyzer.cpp.

References args_.

3512  {
3513  for (const auto& arg : args_) {
3514  arg->collect_rte_idx(rte_idx_set);
3515  }
3516 }
std::vector< std::shared_ptr< Analyzer::Expr > > args_
Definition: Analyzer.h:1816
std::shared_ptr< Analyzer::Expr > Analyzer::StringOper::deep_copy ( ) const
overridevirtual

Implements Analyzer::Expr.

Reimplemented in Analyzer::PositionStringOper, Analyzer::TryStringCastOper, Analyzer::Base64DecodeStringOper, Analyzer::Base64EncodeStringOper, Analyzer::JsonValueStringOper, Analyzer::RegexpSubstrStringOper, Analyzer::RegexpReplaceStringOper, Analyzer::SplitPartStringOper, Analyzer::ReplaceStringOper, Analyzer::OverlayStringOper, Analyzer::SubstringStringOper, Analyzer::TrimStringOper, Analyzer::PadStringOper, Analyzer::ConcatStringOper, Analyzer::RepeatStringOper, Analyzer::ReverseStringOper, Analyzer::InitCapStringOper, Analyzer::UpperStringOper, and Analyzer::LowerStringOper.

Definition at line 3681 of file Analyzer.cpp.

References args_, chained_string_op_exprs_, Analyzer::Expr::get_type_info(), and kind_.

Referenced by Analyzer::LowerStringOper::deep_copy(), Analyzer::UpperStringOper::deep_copy(), Analyzer::InitCapStringOper::deep_copy(), Analyzer::ReverseStringOper::deep_copy(), Analyzer::RepeatStringOper::deep_copy(), Analyzer::ConcatStringOper::deep_copy(), Analyzer::PadStringOper::deep_copy(), Analyzer::TrimStringOper::deep_copy(), Analyzer::SubstringStringOper::deep_copy(), Analyzer::OverlayStringOper::deep_copy(), Analyzer::ReplaceStringOper::deep_copy(), Analyzer::SplitPartStringOper::deep_copy(), Analyzer::RegexpReplaceStringOper::deep_copy(), Analyzer::RegexpSubstrStringOper::deep_copy(), Analyzer::JsonValueStringOper::deep_copy(), Analyzer::Base64EncodeStringOper::deep_copy(), Analyzer::Base64DecodeStringOper::deep_copy(), Analyzer::TryStringCastOper::deep_copy(), Analyzer::PositionStringOper::deep_copy(), and DeepCopyVisitor::visitStringOper().

3681  {
3682  std::vector<std::shared_ptr<Analyzer::Expr>> args_copy;
3683  for (const auto& arg : args_) {
3684  args_copy.emplace_back(arg->deep_copy());
3685  }
3686  std::vector<std::shared_ptr<Analyzer::Expr>> chained_string_op_exprs_copy;
3687  for (const auto& chained_string_op_expr : chained_string_op_exprs_) {
3688  chained_string_op_exprs_copy.emplace_back(chained_string_op_expr->deep_copy());
3689  }
3690  return makeExpr<Analyzer::StringOper>(kind_,
3691  get_type_info(),
3692  std::move(args_copy),
3693  std::move(chained_string_op_exprs_copy));
3694 }
std::vector< std::shared_ptr< Analyzer::Expr > > chained_string_op_exprs_
Definition: Analyzer.h:1817
const SQLTypeInfo & get_type_info() const
Definition: Analyzer.h:79
std::vector< std::shared_ptr< Analyzer::Expr > > args_
Definition: Analyzer.h:1816
SqlStringOpKind kind_
Definition: Analyzer.h:1815

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

Reimplemented from Analyzer::Expr.

Definition at line 3335 of file Analyzer.cpp.

References Analyzer::Expr::add_unique(), args_, and f().

3336  {
3337  if (f(this)) {
3338  add_unique(expr_list);
3339  return;
3340  }
3341  for (const auto& arg : args_) {
3342  arg->find_expr(f, expr_list);
3343  }
3344 }
virtual void add_unique(std::list< const Expr * > &expr_list) const
Definition: Analyzer.cpp:3245
std::vector< std::shared_ptr< Analyzer::Expr > > args_
Definition: Analyzer.h:1816
torch::Tensor f(torch::Tensor x, torch::Tensor W_target, torch::Tensor b_target)

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SqlStringOpKind Analyzer::StringOper::get_kind ( ) const
inline

Definition at line 1668 of file Analyzer.h.

References kind_.

Referenced by check_operand_types(), CodeGenerator::codegenPerRowStringOper(), operator==(), TransientStringLiteralsVisitor::visitStringOper(), TextEncodingCastCountVisitor::visitStringOper(), and anonymous_namespace{ExpressionRewrite.cpp}::ConstantFoldingVisitor::visitStringOper().

1668 { return kind_; }
SqlStringOpKind kind_
Definition: Analyzer.h:1815

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SQLTypeInfo Analyzer::StringOper::get_return_type ( const SqlStringOpKind  kind,
const std::vector< std::shared_ptr< Analyzer::Expr >> &  args 
)
staticprivate

Definition at line 4286 of file Analyzer.cpp.

References run_benchmark_import::args, CHECK_NE, kENCODING_DICT, kNULLT, kTEXT, remove_cast(), and TRY_STRING_CAST.

4288  {
4290  << "get_return_type for TRY_STRING_CAST disallowed.";
4291  SQLTypeInfo return_ti(kNULLT);
4292  size_t num_var_string_inputs{0};
4293  for (const auto& arg : args) {
4294  const auto raw_arg = arg.get();
4295  const auto& arg_ti = arg->get_type_info();
4296  if (dynamic_cast<const Analyzer::CaseExpr*>(remove_cast(raw_arg))) {
4297  // Currently we disallow case statement inputs to string functions
4298  // pending a full resolution to QE-359, but the error is thrown
4299  // downstream in StringOper::check_operand_types
4300  return SQLTypeInfo(kTEXT, kENCODING_DICT, 0, kNULLT);
4301  } else if (arg_ti.is_string() && dynamic_cast<const Analyzer::Constant*>(raw_arg)) {
4302  if (return_ti == SQLTypeInfo(kNULLT)) {
4303  return_ti = arg_ti;
4304  }
4305  } else if (arg_ti.is_none_encoded_string()) {
4306  return SQLTypeInfo(kTEXT, kENCODING_DICT, 0, kNULLT);
4307  } else if (arg_ti.is_dict_encoded_string()) {
4308  if (arg_ti.getStringDictKey().isTransientDict()) {
4309  return SQLTypeInfo(kTEXT, kENCODING_DICT, 0, kNULLT);
4310  } else {
4311  num_var_string_inputs++;
4312  return_ti = arg_ti;
4313  }
4314  }
4315  }
4316  if (num_var_string_inputs > 1UL) {
4317  return SQLTypeInfo(kTEXT, kENCODING_DICT, 0, kNULLT);
4318  }
4319  return return_ti;
4320 }
std::shared_ptr< Analyzer::Expr > remove_cast(const std::shared_ptr< Analyzer::Expr > &expr)
Definition: Analyzer.cpp:4533
#define CHECK_NE(x, y)
Definition: Logger.h:302
Definition: sqltypes.h:79

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const Expr* Analyzer::StringOper::getArg ( const size_t  i) const
inline

Definition at line 1684 of file Analyzer.h.

References args_, and CHECK_LT.

Referenced by CodeGenerator::codegen(), CodeGenerator::codegenStringFetchAndEncode(), getLiteralArgs(), operator==(), pre_translate_string_ops(), translate_dict_strings(), TransientStringLiteralsVisitor::visitStringOper(), and TextEncodingCastCountVisitor::visitStringOper().

1684  {
1685  CHECK_LT(i, args_.size());
1686  return args_[i].get();
1687  }
std::vector< std::shared_ptr< Analyzer::Expr > > args_
Definition: Analyzer.h:1816
#define CHECK_LT(x, y)
Definition: Logger.h:303

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size_t Analyzer::StringOper::getArity ( ) const
inline

Definition at line 1670 of file Analyzer.h.

References args_.

Referenced by CodeGenerator::codegen(), CodeGenerator::codegenPerRowStringOper(), CodeGenerator::codegenStringFetchAndEncode(), getLiteralArgs(), getNonLiteralsArity(), operator==(), pre_translate_string_ops(), TransientStringLiteralsVisitor::visitStringOper(), TextEncodingCastCountVisitor::visitStringOper(), and anonymous_namespace{ExpressionRewrite.cpp}::ConstantFoldingVisitor::visitStringOper().

1670 { return args_.size(); }
std::vector< std::shared_ptr< Analyzer::Expr > > args_
Definition: Analyzer.h:1816

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std::vector<std::shared_ptr<Analyzer::Expr> > Analyzer::StringOper::getChainedStringOpExprs ( ) const
inline

Definition at line 1696 of file Analyzer.h.

References chained_string_op_exprs_.

Referenced by getExpressionRange(), getStringOpInfos(), and TransientStringLiteralsVisitor::visitStringOper().

1696  {
1697  return chained_string_op_exprs_;
1698  }
std::vector< std::shared_ptr< Analyzer::Expr > > chained_string_op_exprs_
Definition: Analyzer.h:1817

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std::vector< size_t > Analyzer::StringOper::getLiteralArgIndexes ( ) const

Definition at line 4258 of file Analyzer.cpp.

References args_.

4258  {
4259  std::vector<size_t> literal_arg_indexes;
4260  const auto num_args = args_.size();
4261  for (size_t idx = 0; idx < num_args; ++idx) {
4262  if (dynamic_cast<const Constant*>(args_[idx].get())) {
4263  literal_arg_indexes.emplace_back(idx);
4264  }
4265  }
4266  return literal_arg_indexes;
4267 }
std::vector< std::shared_ptr< Analyzer::Expr > > args_
Definition: Analyzer.h:1816
LiteralArgMap Analyzer::StringOper::getLiteralArgs ( ) const

Definition at line 4271 of file Analyzer.cpp.

References getArg(), and getArity().

Referenced by TransientStringLiteralsVisitor::visitStringOper(), and anonymous_namespace{ExpressionRewrite.cpp}::ConstantFoldingVisitor::visitStringOper().

4271  {
4272  LiteralArgMap literal_arg_map;
4273  const auto num_args = getArity();
4274  for (size_t idx = 0; idx < num_args; ++idx) {
4275  const auto constant_arg_expr = dynamic_cast<const Analyzer::Constant*>(getArg(idx));
4276  if (constant_arg_expr) {
4277  literal_arg_map.emplace(
4278  std::make_pair(idx,
4279  std::make_pair(constant_arg_expr->get_type_info().get_type(),
4280  constant_arg_expr->get_constval())));
4281  }
4282  }
4283  return literal_arg_map;
4284 }
std::map< size_t, std::pair< SQLTypes, Datum >> LiteralArgMap
Definition: Analyzer.h:1765
size_t getArity() const
Definition: Analyzer.h:1670
const Expr * getArg(const size_t i) const
Definition: Analyzer.h:1684

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size_t Analyzer::StringOper::getLiteralsArity ( ) const
inline

Definition at line 1672 of file Analyzer.h.

References args_.

Referenced by getNonLiteralsArity(), and TransientStringLiteralsVisitor::visitStringOper().

1672  {
1673  size_t num_literals{0UL};
1674  for (const auto& arg : args_) {
1675  if (dynamic_cast<const Constant*>(arg.get())) {
1676  num_literals++;
1677  }
1678  }
1679  return num_literals;
1680  }
std::vector< std::shared_ptr< Analyzer::Expr > > args_
Definition: Analyzer.h:1816

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size_t Analyzer::StringOper::getNonLiteralsArity ( ) const
inline

Definition at line 1682 of file Analyzer.h.

References getArity(), and getLiteralsArity().

Referenced by CodeGenerator::codegenPerRowStringOper(), TransientStringLiteralsVisitor::visitStringOper(), and anonymous_namespace{ExpressionRewrite.cpp}::ConstantFoldingVisitor::visitStringOper().

1682 { return getArity() - getLiteralsArity(); }
size_t getArity() const
Definition: Analyzer.h:1670
size_t getLiteralsArity() const
Definition: Analyzer.h:1672

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std::shared_ptr<Analyzer::Expr> Analyzer::StringOper::getOwnArg ( const size_t  i) const
inline

Definition at line 1689 of file Analyzer.h.

References args_, and CHECK_LT.

1689  {
1690  CHECK_LT(i, args_.size());
1691  return args_[i];
1692  }
std::vector< std::shared_ptr< Analyzer::Expr > > args_
Definition: Analyzer.h:1816
#define CHECK_LT(x, y)
Definition: Logger.h:303
std::vector<std::shared_ptr<Analyzer::Expr> > Analyzer::StringOper::getOwnArgs ( ) const
inline

Definition at line 1694 of file Analyzer.h.

References args_.

Referenced by ScalarExprVisitor< std::set< shared::TableKey > >::visitStringOper(), and anonymous_namespace{ExpressionRewrite.cpp}::ConstantFoldingVisitor::visitStringOper().

1694 { return args_; }
std::vector< std::shared_ptr< Analyzer::Expr > > args_
Definition: Analyzer.h:1816

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void Analyzer::StringOper::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 1785 of file Analyzer.cpp.

References args_.

1787  {
1788  std::set<int> rte_idx_set;
1789  for (const auto& arg : args_) {
1790  arg->collect_rte_idx(rte_idx_set);
1791  }
1792  if (rte_idx_set.size() > 1) {
1793  join_predicates.push_back(this);
1794  } else if (rte_idx_set.size() == 1) {
1795  scan_predicates.push_back(this);
1796  } else {
1797  const_predicates.push_back(this);
1798  }
1799 }
std::vector< std::shared_ptr< Analyzer::Expr > > args_
Definition: Analyzer.h:1816
bool Analyzer::StringOper::hasNoneEncodedTextArg ( ) const
inline

Definition at line 1739 of file Analyzer.h.

References args_, and CHECK.

Referenced by TextEncodingCastCountVisitor::visitStringOper().

1739  {
1740  if (args_.empty()) {
1741  return false;
1742  }
1743  const auto& arg0_ti = args_[0]->get_type_info();
1744  if (!arg0_ti.is_string()) {
1745  return false;
1746  }
1747  if (arg0_ti.is_none_encoded_string()) {
1748  return true;
1749  }
1750  CHECK(arg0_ti.is_dict_encoded_string());
1751  return arg0_ti.getStringDictKey().isTransientDict();
1752  }
std::vector< std::shared_ptr< Analyzer::Expr > > args_
Definition: Analyzer.h:1816
#define CHECK(condition)
Definition: Logger.h:291

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bool Analyzer::StringOper::hasSingleDictEncodedColInput ( ) const

returns whether we have one and only one column involved in this StringOper and all its descendents, and that that column is a dictionary-encoded text type

Returns
std::vector<SqlTypeInfo>

Definition at line 4244 of file Analyzer.cpp.

References CHECK, collect_column_var(), and Analyzer::ColumnVar::colvar_comp().

4244  {
4245  auto comparator = Analyzer::ColumnVar::colvar_comp;
4246  std::set<const Analyzer::ColumnVar*,
4247  bool (*)(const Analyzer::ColumnVar*, const Analyzer::ColumnVar*)>
4248  colvar_set(comparator);
4249  collect_column_var(colvar_set, true);
4250  if (colvar_set.size() != 1UL) {
4251  return false;
4252  }
4253  auto col_expr_ptr = *colvar_set.begin();
4254  CHECK(col_expr_ptr);
4255  return col_expr_ptr->get_type_info().is_dict_encoded_string();
4256 }
static bool colvar_comp(const ColumnVar *l, const ColumnVar *r)
Definition: Analyzer.h:215
void collect_column_var(std::set< const ColumnVar *, bool(*)(const ColumnVar *, const ColumnVar *)> &colvar_set, bool include_agg) const override
Definition: Analyzer.cpp:3572
#define CHECK(condition)
Definition: Logger.h:291

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bool Analyzer::StringOper::operator== ( const Expr rhs) const
overridevirtual

Implements Analyzer::Expr.

Definition at line 3799 of file Analyzer.cpp.

References chained_string_op_exprs_, get_kind(), getArg(), and getArity().

3799  {
3800  const auto rhs_string_oper = dynamic_cast<const StringOper*>(&rhs);
3801 
3802  if (!rhs_string_oper) {
3803  return false;
3804  }
3805 
3806  if (get_kind() != rhs_string_oper->get_kind()) {
3807  return false;
3808  }
3809  if (getArity() != rhs_string_oper->getArity()) {
3810  return false;
3811  }
3812 
3813  for (size_t i = 0; i < getArity(); ++i) {
3814  if (!(*getArg(i) == *(rhs_string_oper->getArg(i)))) {
3815  return false;
3816  }
3817  }
3818  if (chained_string_op_exprs_.size() !=
3819  rhs_string_oper->chained_string_op_exprs_.size()) {
3820  return false;
3821  }
3822  for (size_t i = 0; i < chained_string_op_exprs_.size(); ++i) {
3823  if (!(*(chained_string_op_exprs_[i]) ==
3824  *(rhs_string_oper->chained_string_op_exprs_[i]))) {
3825  return false;
3826  }
3827  }
3828  return true;
3829 }
size_t getArity() const
Definition: Analyzer.h:1670
std::vector< std::shared_ptr< Analyzer::Expr > > chained_string_op_exprs_
Definition: Analyzer.h:1817
StringOper(const SqlStringOpKind kind, const std::vector< std::shared_ptr< Analyzer::Expr >> &args)
Definition: Analyzer.h:1607
SqlStringOpKind get_kind() const
Definition: Analyzer.h:1668
const Expr * getArg(const size_t i) const
Definition: Analyzer.h:1684

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bool Analyzer::StringOper::requiresPerRowTranslation ( ) const
inline

Definition at line 1700 of file Analyzer.h.

References args_, and Analyzer::Expr::get_type_info().

Referenced by CodeGenerator::codegen(), and getExpressionRange().

1700  {
1701  const auto& return_ti = get_type_info();
1702  if (return_ti.is_none_encoded_string() ||
1703  (return_ti.is_dict_encoded_string() &&
1704  return_ti.getStringDictKey().isTransientDict())) {
1705  return true;
1706  }
1707 
1708  // Anything that returns the transient dictionary by definition
1709  // (see StringOper::get_return_type) requires per-row translation,
1710  // but there is also a path with string->numeric functions (the output is
1711  // not a string) where we need to see if any of the inputs are none-encoded
1712  // or transient dictionary encoded, in which case we also need to do per-row
1713  // translation. The handling of that condition follows below.
1714 
1715  size_t num_var_str_args{0};
1716  for (const auto& arg : args_) {
1717  const auto arg_is_const = dynamic_cast<const Analyzer::Constant*>(arg.get());
1718  if (arg_is_const) {
1719  continue;
1720  }
1721  const auto& arg_ti = arg->get_type_info();
1722  if (arg_ti.is_none_encoded_string() ||
1723  (arg_ti.is_dict_encoded_string() &&
1724  arg_ti.getStringDictKey().isTransientDict())) {
1725  return true;
1726  }
1727  num_var_str_args++;
1728  }
1729  return num_var_str_args > 1UL;
1730  }
const SQLTypeInfo & get_type_info() const
Definition: Analyzer.h:79
std::vector< std::shared_ptr< Analyzer::Expr > > args_
Definition: Analyzer.h:1816

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

Reimplemented from Analyzer::Expr.

Definition at line 2058 of file Analyzer.cpp.

References args_, and kind_.

2059  {
2060  std::vector<std::shared_ptr<Analyzer::Expr>> rewritten_args;
2061  for (const auto& arg : args_) {
2062  rewritten_args.emplace_back(arg->rewrite_agg_to_var(tlist));
2063  }
2064  return makeExpr<StringOper>(kind_, rewritten_args);
2065 }
std::vector< std::shared_ptr< Analyzer::Expr > > args_
Definition: Analyzer.h:1816
SqlStringOpKind kind_
Definition: Analyzer.h:1815
std::shared_ptr< Analyzer::Expr > Analyzer::StringOper::rewrite_with_child_targetlist ( const std::vector< std::shared_ptr< TargetEntry >> &  tlist) const
overridevirtual

Reimplemented from Analyzer::Expr.

Definition at line 2049 of file Analyzer.cpp.

References args_, and kind_.

2050  {
2051  std::vector<std::shared_ptr<Analyzer::Expr>> rewritten_args;
2052  for (const auto& arg : args_) {
2053  rewritten_args.emplace_back(arg->rewrite_with_child_targetlist(tlist));
2054  }
2055  return makeExpr<StringOper>(kind_, rewritten_args);
2056 }
std::vector< std::shared_ptr< Analyzer::Expr > > args_
Definition: Analyzer.h:1816
SqlStringOpKind kind_
Definition: Analyzer.h:1815
std::shared_ptr< Analyzer::Expr > Analyzer::StringOper::rewrite_with_targetlist ( const std::vector< std::shared_ptr< TargetEntry >> &  tlist) const
overridevirtual

Reimplemented from Analyzer::Expr.

Definition at line 2040 of file Analyzer.cpp.

References args_, and kind_.

2041  {
2042  std::vector<std::shared_ptr<Analyzer::Expr>> rewritten_args;
2043  for (const auto& arg : args_) {
2044  rewritten_args.emplace_back(arg->rewrite_with_targetlist(tlist));
2045  }
2046  return makeExpr<StringOper>(kind_, rewritten_args);
2047 }
std::vector< std::shared_ptr< Analyzer::Expr > > args_
Definition: Analyzer.h:1816
SqlStringOpKind kind_
Definition: Analyzer.h:1815
std::string Analyzer::StringOper::toString ( ) const
overridevirtual

Implements Analyzer::Expr.

Definition at line 3853 of file Analyzer.cpp.

References args_, and kind_.

Referenced by check_operand_types().

3853  {
3854  std::string str{"(" + ::toString(kind_) + " "};
3855  for (const auto& arg : args_) {
3856  str += arg->toString();
3857  }
3858  str += ")";
3859  return str;
3860 }
std::vector< std::shared_ptr< Analyzer::Expr > > args_
Definition: Analyzer.h:1816
SqlStringOpKind kind_
Definition: Analyzer.h:1815
std::string toString() const override
Definition: Analyzer.cpp:3853

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Member Data Documentation

std::vector<std::shared_ptr<Analyzer::Expr> > Analyzer::StringOper::chained_string_op_exprs_
private

Definition at line 1817 of file Analyzer.h.

Referenced by deep_copy(), getChainedStringOpExprs(), operator==(), and StringOper().

SqlStringOpKind Analyzer::StringOper::kind_
private

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