Parser::AlterTableStmt Class Reference

#include <ParserNode.h>

Inheritance diagram for Parser::AlterTableStmt:

Collaboration diagram for Parser::AlterTableStmt:

Public Member Functions
const std::string *	get_table () const
void	execute (const Catalog_Namespace::SessionInfo &session, bool read_only_mode) override
Public Member Functions inherited from Parser::DDLStmt
void	setColumnDescriptor (ColumnDescriptor &cd, const ColumnDef *coldef)
Public Member Functions inherited from Parser::Node
virtual	~Node ()

Static Public Member Functions
static std::unique_ptr < Parser::DDLStmt >	delegate (const rapidjson::Value &payload)

Private Attributes
std::unique_ptr< std::string >	table_
const rapidjson::Value	payload_

Detailed Description

Definition at line 1204 of file ParserNode.h.

Member Function Documentation

std::unique_ptr< DDLStmt > Parser::AlterTableStmt::delegate ( const rapidjson::Value &  payload )

static

Definition at line 4417 of file ParserNode.cpp.

References CHECK, Parser::anonymous_namespace{ParserNode.cpp}::column_from_json(), logger::FATAL, json_i64(), json_str(), LOG, split(), and run_benchmark_import::type.

Referenced by Parser::create_stmt_for_json(), and DdlCommandExecutor::execute().

                                                                             {
  CHECK(payload.HasMember("tableName"));
  auto tableName = json_str(payload["tableName"]);

  CHECK(payload.HasMember("alterType"));
  auto type = json_str(payload["alterType"]);

  if (type == "RENAME_TABLE") {
    CHECK(payload.HasMember("newTableName"));
    auto newTableName = json_str(payload["newTableName"]);
    return std::unique_ptr<DDLStmt>(new Parser::RenameTableStmt(
        new std::string(tableName), new std::string(newTableName)));

  } else if (type == "RENAME_COLUMN") {
    CHECK(payload.HasMember("columnName"));
    auto columnName = json_str(payload["columnName"]);
    CHECK(payload.HasMember("newColumnName"));
    auto newColumnName = json_str(payload["newColumnName"]);
    return std::unique_ptr<DDLStmt>(
        new Parser::RenameColumnStmt(new std::string(tableName),
                                     new std::string(columnName),
                                     new std::string(newColumnName)));

  } else if (type == "ADD_COLUMN") {
    CHECK(payload.HasMember("columnData"));
    CHECK(payload["columnData"].IsArray());

    // New Columns go into this list
    std::list<ColumnDef*>* table_element_list_ = new std::list<ColumnDef*>;

    const auto elements = payload["columnData"].GetArray();
    for (const auto& element : elements) {
      CHECK(element.IsObject());
      CHECK(element.HasMember("type"));
      if (json_str(element["type"]) == "SQL_COLUMN_DECLARATION") {
        auto col_def = column_from_json(element);
        table_element_list_->emplace_back(col_def.release());
      } else {
        LOG(FATAL) << "Unsupported element type for ALTER TABLE: "
                   << element["type"].GetString();
      }
    }

    return std::unique_ptr<DDLStmt>(
        new Parser::AddColumnStmt(new std::string(tableName), table_element_list_));

  } else if (type == "DROP_COLUMN") {
    CHECK(payload.HasMember("columnData"));
    auto columnData = json_str(payload["columnData"]);
    // Convert columnData to std::list<std::string*>*
    //    allocate std::list<> as DropColumnStmt will delete it;
    std::list<std::string*>* cols = new std::list<std::string*>;
    std::vector<std::string> cols1;
    boost::split(cols1, columnData, boost::is_any_of(","));
    for (auto s : cols1) {
      // strip leading/trailing spaces/quotes/single quotes
      boost::algorithm::trim_if(s, boost::is_any_of(" \"'`"));
      std::string* str = new std::string(s);
      cols->emplace_back(str);
    }

    return std::unique_ptr<DDLStmt>(
        new Parser::DropColumnStmt(new std::string(tableName), cols));

  } else if (type == "ALTER_OPTIONS") {
    CHECK(payload.HasMember("options"));

    if (payload["options"].IsObject()) {
      for (const auto& option : payload["options"].GetObject()) {
        std::string* option_name = new std::string(json_str(option.name));
        Literal* literal_value;
        if (option.value.IsString()) {
          std::string literal_string = json_str(option.value);

          // iff this string can be converted to INT
          //   ... do so because it is necessary for AlterTableParamStmt
          std::size_t sz;
          int iVal = std::stoi(literal_string, &sz);
          if (sz == literal_string.size()) {
            literal_value = new IntLiteral(iVal);
          } else {
            literal_value = new StringLiteral(&literal_string);
          }
        } else if (option.value.IsInt() || option.value.IsInt64()) {
          literal_value = new IntLiteral(json_i64(option.value));
        } else if (option.value.IsNull()) {
          literal_value = new NullLiteral();
        } else {
          throw std::runtime_error("Unable to handle literal for " + *option_name);
        }
        CHECK(literal_value);

        NameValueAssign* nv = new NameValueAssign(option_name, literal_value);
        return std::unique_ptr<DDLStmt>(
            new Parser::AlterTableParamStmt(new std::string(tableName), nv));
      }

    } else {
      CHECK(payload["options"].IsNull());
    }
  }
  return nullptr;
}

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void Parser::AlterTableStmt::execute ( const Catalog_Namespace::SessionInfo &  session, bool  read_only_mode  )

overridevirtual

Implements Parser::DDLStmt.

Definition at line 4414 of file ParserNode.cpp.

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

                                                  {}

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const std::string* Parser::AlterTableStmt::get_table ( ) const

inline

Definition at line 1208 of file ParserNode.h.

References table_.

{ return table_.get(); }

Member Data Documentation

const rapidjson::Value Parser::AlterTableStmt::payload_

private

Definition at line 1215 of file ParserNode.h.

std::unique_ptr<std::string> Parser::AlterTableStmt::table_

private

Definition at line 1214 of file ParserNode.h.

Referenced by get_table().

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

• /home/jenkins-slave/workspace/core-os-doxygen/Parser/ParserNode.h
• /home/jenkins-slave/workspace/core-os-doxygen/Parser/ParserNode.cpp