| Wt
    3.3.0
    | 
Abstract base class for a prepared SQL statement. More...

| Public Member Functions | |
| virtual | ~SqlStatement () | 
| Destructor. | |
| bool | use () | 
| Uses the statement. | |
| void | done () | 
| Finish statement use. | |
| virtual void | reset ()=0 | 
| Resets the statement. | |
| virtual void | bind (int column, const std::string &value)=0 | 
| Binds a value to a column. | |
| virtual void | bind (int column, short value)=0 | 
| Binds a value to a column. | |
| virtual void | bind (int column, int value)=0 | 
| Binds a value to a column. | |
| virtual void | bind (int column, long long value)=0 | 
| Binds a value to a column. | |
| virtual void | bind (int column, float value)=0 | 
| Binds a value to a column. | |
| virtual void | bind (int column, double value)=0 | 
| Binds a value to a column. | |
| virtual void | bind (int column, const boost::posix_time::ptime &value, SqlDateTimeType type)=0 | 
| Binds a value to a column. | |
| virtual void | bind (int column, const boost::posix_time::time_duration &value)=0 | 
| Binds a value to a column. | |
| virtual void | bind (int column, const std::vector< unsigned char > &value)=0 | 
| Binds a value to a column. | |
| virtual void | bindNull (int column)=0 | 
| Binds nullto a column. | |
| virtual void | execute ()=0 | 
| Executes the statement. | |
| virtual long long | insertedId ()=0 | 
| Returns the id if the statement was an SQL insert. | |
| virtual int | affectedRowCount ()=0 | 
| Returns the affected number of rows. | |
| virtual bool | nextRow ()=0 | 
| Fetches the next result row. | |
| virtual bool | getResult (int column, std::string *value, int size)=0 | 
| Fetches a result value. | |
| virtual bool | getResult (int column, short *value)=0 | 
| Fetches a result value. | |
| virtual bool | getResult (int column, int *value)=0 | 
| Fetches a result value. | |
| virtual bool | getResult (int column, long long *value)=0 | 
| Fetches a result value. | |
| virtual bool | getResult (int column, float *value)=0 | 
| Fetches a result value. | |
| virtual bool | getResult (int column, double *value)=0 | 
| Fetches a result value. | |
| virtual bool | getResult (int column, boost::posix_time::ptime *value, SqlDateTimeType type)=0 | 
| Fetches a result value. | |
| virtual bool | getResult (int column, boost::posix_time::time_duration *value)=0 | 
| Fetches a result value. | |
| virtual bool | getResult (int column, std::vector< unsigned char > *value, int size)=0 | 
| Fetches a result value. | |
| virtual std::string | sql () const =0 | 
| Returns the prepared SQL string. | |
Abstract base class for a prepared SQL statement.
The statement may be used multiple times, but cannot be used concurrently. It also cannot be copied.
This class is part of Wt::Dbo's backend API, and should not be used directly. Its interface must be reimplemented for each backend corresponding to a supported database.
| virtual int Wt::Dbo::SqlStatement::affectedRowCount | ( | ) |  [pure virtual] | 
Returns the affected number of rows.
This is only useful for an SQL update or delete statement. 
Implemented in Wt::Dbo::backend::MySQLStatement.
| void Wt::Dbo::SqlStatement::done | ( | ) | 
Finish statement use.
Marks the statement as no longer used and resets the statement.
| virtual bool Wt::Dbo::SqlStatement::getResult | ( | int | column, | 
| std::string * | value, | ||
| int | size | ||
| ) |  [pure virtual] | 
Fetches a result value.
Returns true when the value was not null. 
Implemented in Wt::Dbo::backend::MySQLStatement.
| virtual bool Wt::Dbo::SqlStatement::getResult | ( | int | column, | 
| short * | value | ||
| ) |  [pure virtual] | 
Fetches a result value.
Returns true when the value was not null. 
Implemented in Wt::Dbo::backend::MySQLStatement.
| virtual bool Wt::Dbo::SqlStatement::getResult | ( | int | column, | 
| int * | value | ||
| ) |  [pure virtual] | 
Fetches a result value.
Returns true when the value was not null. 
Implemented in Wt::Dbo::backend::MySQLStatement.
| virtual bool Wt::Dbo::SqlStatement::getResult | ( | int | column, | 
| long long * | value | ||
| ) |  [pure virtual] | 
Fetches a result value.
Returns true when the value was not null. 
Implemented in Wt::Dbo::backend::MySQLStatement.
| virtual bool Wt::Dbo::SqlStatement::getResult | ( | int | column, | 
| float * | value | ||
| ) |  [pure virtual] | 
Fetches a result value.
Returns true when the value was not null. 
Implemented in Wt::Dbo::backend::MySQLStatement.
| virtual bool Wt::Dbo::SqlStatement::getResult | ( | int | column, | 
| double * | value | ||
| ) |  [pure virtual] | 
Fetches a result value.
Returns true when the value was not null. 
Implemented in Wt::Dbo::backend::MySQLStatement.
| virtual bool Wt::Dbo::SqlStatement::getResult | ( | int | column, | 
| boost::posix_time::ptime * | value, | ||
| SqlDateTimeType | type | ||
| ) |  [pure virtual] | 
Fetches a result value.
Returns true when the value was not null. 
Implemented in Wt::Dbo::backend::MySQLStatement.
| virtual bool Wt::Dbo::SqlStatement::getResult | ( | int | column, | 
| boost::posix_time::time_duration * | value | ||
| ) |  [pure virtual] | 
Fetches a result value.
Returns true when the value was not null. 
Implemented in Wt::Dbo::backend::MySQLStatement.
| virtual bool Wt::Dbo::SqlStatement::getResult | ( | int | column, | 
| std::vector< unsigned char > * | value, | ||
| int | size | ||
| ) |  [pure virtual] | 
Fetches a result value.
Returns true when the value was not null. 
Implemented in Wt::Dbo::backend::MySQLStatement.
| virtual bool Wt::Dbo::SqlStatement::nextRow | ( | ) |  [pure virtual] | 
Fetches the next result row.
Returns true if there was one more row to be fetched. 
Implemented in Wt::Dbo::backend::MySQLStatement.
| bool Wt::Dbo::SqlStatement::use | ( | ) | 
Uses the statement.
Marks the statement as in-use. If the statement is already in use, return false. In that case, we will later provision that a statement can be cloned and that a list of equivalent statement is kept in the statement cache of a connectin.
 1.7.5.1
 1.7.5.1