Dv::Sql::value_exp Class Reference
An abstract base class for value expressions. More...
#include <select_exp.h>
Public Member Functions | |
| virtual std::ostream & | print (std::ostream &os, const Dv::Sql::Db &db) const =0 |
| Print this expression on a stream, using escapes for column values. | |
| virtual | ~value_exp () |
| Destructor. | |
| const Dv::Sql::Table::Set & | tables () const |
| The set of tables involved in this expression. | |
Protected Member Functions | |
| template<typename T > | |
| void | add_table (const T &t) |
| Add the table(s) mentioned in a (component) of an expression to the list of involved tables. | |
| void | add_table (const Dv::Sql::Table::Column &c) |
| Add the table of this column to the list of involved tables. | |
| void | add_table (const Dv::Sql::value_exp &e) |
| Add the tables involved in an expression to the list of involved tables. | |
Protected Attributes | |
| Dv::Sql::Table::Set | tables_ |
| Set of tables mentioned in this expression. | |
Detailed Description
An abstract base class for value expressions.
Definition at line 207 of file select_exp.h.
Constructor & Destructor Documentation
| virtual Dv::Sql::value_exp::~value_exp | ( | ) | [inline, virtual] |
Destructor.
Definition at line 217 of file select_exp.h.
Member Function Documentation
| virtual std::ostream& Dv::Sql::value_exp::print | ( | std::ostream & | os, | |
| const Dv::Sql::Db & | db | |||
| ) | const [pure virtual] |
Print this expression on a stream, using escapes for column values.
- Parameters:
-
os stream to print to db whose associated escape function will be used
- Returns:
- os
Implemented in Dv::Sql::unary_value_exp< L >, and Dv::Sql::binary_value_exp< L1, L2 >.
| const Dv::Sql::Table::Set& Dv::Sql::value_exp::tables | ( | ) | const [inline] |
The set of tables involved in this expression.
- Returns:
- the set of tables involved in this expression
Definition at line 221 of file select_exp.h.
References tables_.
| void Dv::Sql::value_exp::add_table | ( | const T & | t | ) | [inline, protected] |
Add the table(s) mentioned in a (component) of an expression to the list of involved tables.
- Parameters:
-
t expression component
- See also:
- Dv::Sql::boolexp::tables
Definition at line 232 of file select_exp.h.
| void Dv::Sql::value_exp::add_table | ( | const Dv::Sql::Table::Column & | c | ) | [protected] |
Add the table of this column to the list of involved tables.
| void Dv::Sql::value_exp::add_table | ( | const Dv::Sql::value_exp & | e | ) | [protected] |
Add the tables involved in an expression to the list of involved tables.
Member Data Documentation
Dv::Sql::Table::Set Dv::Sql::value_exp::tables_ [protected] |
Set of tables mentioned in this expression.
Definition at line 225 of file select_exp.h.
Referenced by tables().
The documentation for this class was generated from the following file: