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NAME

       OpenDBX::Stmt - Statement object.

SYNOPSIS

   Public Types
       enum Type Statement objects which can be created. "

   Public Member Functions
       Result execute ()  throw ( std::exception )
           Executes a statement and returns a Result instance.
       Stmt & operator= (const Stmt &ref)  throw ()
           Assigns a statement instance to another one.
       Stmt (const Stmt &ref)  throw ()
           Copy constructor.
       ~Stmt ()  throw ()
           Destroys the statement instance if no other references exist.

   Protected Member Functions
       Stmt ()  throw ()
           Default constructor.
       Stmt (Stmt_Iface *impl)  throw ( std::exception )
           Creates a statement instance.

Detailed Description

       Statement object.

       Author:
           Norbert Sendetzky norbert@linuxnetworks.de

       Version:
           1.0

Member Enumeration Documentation

   enum OpenDBX::Stmt::Type
       Statement objects which can be created. Currently, only simple processing of statements is
       supported which means that the statement sent to the database server consists of the
       statement and the parameters in text form. Later on, also prepared statements will be
       available which separates parsing and execution with different parameters.

Constructor & Destructor Documentation

   OpenDBX::Stmt::Stmt () [inline],  [protected]
       Default constructor. The default constructor isn't part of the public interface as the
       object must not be created manually. Instead, the Conn::create() method is a factory for
       instances of the Stmt class.

       Returns:
           Statement instance

   OpenDBX::Stmt::Stmt (Stmt_Iface * impl)std::exception [protected]
       Creates a statement instance. The constructor isn't part of the public interface as the
       object must not be created manually. Instead, the Conn::create() method is a factory for
       instances of the Stmt class.

       Parameters:
           impl Pointer to private implementation

       Exceptions:
           std::exception If an error occures

       Returns:
           Statement instance

   OpenDBX::Stmt::~Stmt ()
       Destroys the statement instance if no other references exist. Each statement object uses a
       reference counter to remember if the internal variables are shared with other objects. If
       this isn't the case or if this object is the last one referencing the variables, the
       object is cleaned up and the allocated memory freed.

   OpenDBX::Stmt::Stmt (const Stmt & ref)
       Copy constructor. Enables the transfer of the internal state of an object ref of the same
       type to this object. Both objects share the same variables and the reference counter
       afterwards. The reference counter is incremented each time an object is copied and will be
       decremented if it is destroyed.

       Parameters:
           ref Original statement object instance

Member Function Documentation

   Result OpenDBX::Stmt::execute ()std::exception
       Executes a statement and returns a Result instance. Sends the necessary data to the
       database server which will execute the statement and return one or more result sets
       afterwards. The result sets can be fetched via the returned Result object.

       Returns:
           Result instance

       Exceptions:
           OpenDBX::Exception If the underlying database library returns an error

       See also:
           Result

   Stmt& OpenDBX::Stmt::operator= (const Stmt & ref)
       Assigns a statement instance to another one. Assigns the internal state of an object ref
       of the same type to this object. Both objects share the same variables and the reference
       counter afterwards. The reference counter is incremented each time an object is copied and
       will be decremented if it is destroyed.

       Parameters:
           ref Stmt instance

       Returns:
           Statement reference of this instance

Author

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