ShowTableFunctionsCommand Class Reference

#include <DdlCommandExecutor.h>

Inheritance diagram for ShowTableFunctionsCommand:

Collaboration diagram for ShowTableFunctionsCommand:

Public Member Functions
	ShowTableFunctionsCommand (const DdlCommandData &ddl_data, std::shared_ptr< Catalog_Namespace::SessionInfo const > session_ptr)
ExecutionResult	execute (bool read_only_mode) override
Public Member Functions inherited from DdlCommand
	DdlCommand (const DdlCommandData &ddl_data, std::shared_ptr< Catalog_Namespace::SessionInfo const > session_ptr)

Additional Inherited Members
Protected Attributes inherited from DdlCommand
const DdlCommandData &	ddl_data_
std::shared_ptr < Catalog_Namespace::SessionInfo const >	session_ptr_

Detailed Description

Definition at line 254 of file DdlCommandExecutor.h.

Constructor & Destructor Documentation

ShowTableFunctionsCommand::ShowTableFunctionsCommand	(	const DdlCommandData &	ddl_data,
		std::shared_ptr< Catalog_Namespace::SessionInfo const >	session_ptr
	)

Definition at line 1922 of file DdlCommandExecutor.cpp.

    : DdlCommand(ddl_data, session_ptr) {}

Member Function Documentation

ExecutionResult ShowTableFunctionsCommand::execute ( bool  read_only_mode )

overridevirtual

Executes the DDL command corresponding to provided JSON payload.

Parameters

_return

result of DDL command execution (if applicable)

Implements DdlCommand.

Definition at line 1927 of file DdlCommandExecutor.cpp.

References ResultSetLogicalValuesBuilder::create(), DdlCommand::ddl_data_, anonymous_namespace{DdlCommandExecutor.cpp}::extractPayload(), anonymous_namespace{DdlCommandExecutor.cpp}::genLiteralBoolean(), genLiteralStr(), table_functions::TableFunctionsFactory::get_table_funcs(), legacylockmgr::getExecuteReadLock(), kBOOLEAN, kTEXT, run_benchmark_import::label, and setup::name.

Referenced by heavydb.cursor.Cursor::executemany().

                                                                      {
  auto execute_read_lock = legacylockmgr::getExecuteReadLock();

  // valid in read_only_mode

  // Get all table functions
  auto& ddl_payload = extractPayload(ddl_data_);
  std::vector<TargetMetaInfo> label_infos;
  std::vector<RelLogicalValues::RowValues> logical_values;

  if (ddl_payload.HasMember("tfNames")) {
    // label_infos -> column labels
    label_infos.emplace_back("name", SQLTypeInfo(kTEXT, true));
    label_infos.emplace_back("signature", SQLTypeInfo(kTEXT, true));
    label_infos.emplace_back("input_names", SQLTypeInfo(kTEXT, true));
    label_infos.emplace_back("input_types", SQLTypeInfo(kTEXT, true));
    label_infos.emplace_back("input_arg_defaults", SQLTypeInfo(kTEXT, true));
    label_infos.emplace_back("output_names", SQLTypeInfo(kTEXT, true));
    label_infos.emplace_back("output_types", SQLTypeInfo(kTEXT, true));
    label_infos.emplace_back("CPU", SQLTypeInfo(kBOOLEAN, true));
    label_infos.emplace_back("GPU", SQLTypeInfo(kBOOLEAN, true));
    label_infos.emplace_back("Runtime", SQLTypeInfo(kBOOLEAN, true));
    label_infos.emplace_back("filter_table_transpose", SQLTypeInfo(kBOOLEAN, true));
    // logical_values -> table data
    for (const auto& tf_name_json : ddl_payload["tfNames"].GetArray()) {
      std::string tf_name = tf_name_json.GetString();
      auto tfs = table_functions::TableFunctionsFactory::get_table_funcs(tf_name);
      for (table_functions::TableFunction& tf : tfs) {
        logical_values.emplace_back(RelLogicalValues::RowValues{});
        // Name
        logical_values.back().emplace_back(genLiteralStr(tf.getName(true, false)));
        // Signature
        logical_values.back().emplace_back(genLiteralStr(
            tf.getSignature(/*include_name*/ false, /*include_output*/ true)));
        // Input argument names
        logical_values.back().emplace_back(
            genLiteralStr(tf.getArgNames(/* use_input_args */ true)));
        // Input argument types
        logical_values.back().emplace_back(
            genLiteralStr(tf.getArgTypes(/* use_input_args */ true)));
        // Input argument default values
        logical_values.back().emplace_back(genLiteralStr(tf.getInputArgsDefaultValues()));
        // Output argument names
        logical_values.back().emplace_back(
            genLiteralStr(tf.getArgNames(/* use_input_args */ false)));
        // Output argument types
        logical_values.back().emplace_back(
            genLiteralStr(tf.getArgTypes(/* use_input_args */ false)));
        // CPU?
        logical_values.back().emplace_back(genLiteralBoolean(tf.isCPU()));
        // GPU?
        logical_values.back().emplace_back(genLiteralBoolean(tf.isGPU()));
        // Runtime?
        logical_values.back().emplace_back(genLiteralBoolean(tf.isRuntime()));
        // Implements filter_table_transpose?
        logical_values.back().emplace_back(genLiteralBoolean(
            !tf.getFunctionAnnotation("filter_table_function_transpose", "").empty()));
      }
    }
  } else {
    // label_infos -> column labels
    for (const auto& label : {"Table UDF"}) {
      label_infos.emplace_back(label, SQLTypeInfo(kTEXT, true));
    }

    // logical_values -> table data
    std::unordered_set<std::string> unique_names;
    for (auto tf : table_functions::TableFunctionsFactory::get_table_funcs(
             /* is_runtime */ false)) {
      std::string name = tf.getName(true, true);
      if (unique_names.find(name) == unique_names.end()) {
        unique_names.emplace(name);
        logical_values.emplace_back(RelLogicalValues::RowValues{});
        logical_values.back().emplace_back(genLiteralStr(name));
      }
    }
  }

  // Create ResultSet
  std::shared_ptr<ResultSet> rSet = std::shared_ptr<ResultSet>(
      ResultSetLogicalValuesBuilder::create(label_infos, logical_values));

  return ExecutionResult(rSet, label_infos);
}

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

• /home/jenkins-slave/workspace/core-os-doxygen/Catalog/DdlCommandExecutor.h
• /home/jenkins-slave/workspace/core-os-doxygen/Catalog/DdlCommandExecutor.cpp