Base class for all the DBMS providers. More...
Public Member Functions | |
virtual | ~ServerProvider () |
GdaServerProvider* | gobj () |
Provides access to the underlying C GObject. | |
const GdaServerProvider* | gobj () const |
Provides access to the underlying C GObject. | |
GdaServerProvider* | gobj_copy () |
Provides access to the underlying C instance. The caller is responsible for unrefing it. Use when directly setting fields in structs. | |
Glib::ustring | get_version () const |
Get the version of the provider. | |
Glib::ustring | get_server_version (const Glib::RefPtr< Connection >& cnc) const |
Get the version of the database to which the connection is opened. | |
bool | supports_operation (const Glib::RefPtr< Connection >& cnc, ServerOperationType type, const Glib::RefPtr< Set >& options) const |
Tells if provider supports the type of operation on the cnc connection, using the (optional) options parameters. | |
Glib::RefPtr< ServerOperation > | create_operation (const Glib::RefPtr< Connection >& cnc, ServerOperationType type, const Glib::RefPtr< Set >& options) |
Creates a new Gda::ServerOperation object which can be modified in order to perform the type type of action. | |
Glib::RefPtr< ServerOperation > | create_operation (const Glib::RefPtr< Connection >& cnc, ServerOperationType type) |
Creates a new Gda::ServerOperation object which can be modified in order to perform the type type of action. | |
Glib::ustring | render_operation (const Glib::RefPtr< Connection >& cnc, const Glib::RefPtr< ServerOperation >& op) |
Creates an SQL statement (possibly using some specific extensions of the DBMS) corresponding to the op operation. | |
bool | perform_operation (const Glib::RefPtr< Connection >& cnc, const Glib::RefPtr< ServerOperation >& op) |
Performs the operation described by op. | |
bool | supports_feature (const Glib::RefPtr< Connection >& cnc, ConnectionFeature feature) const |
Tests if a feature is supported. | |
Glib::ustring | value_to_sql_string (const Glib::RefPtr< Connection >& cnc, const Value& from) const |
Produces a fully quoted and escaped string from a GValue. | |
Glib::ustring | escape_string (const Glib::RefPtr< Connection >& cnc, const Glib::ustring& str) const |
Escapes str for use within an SQL command (to avoid SQL injection attacks). | |
Glib::ustring | unescape_string (const Glib::RefPtr< Connection >& cnc, const Glib::ustring& str) const |
Unescapes str for use within an SQL command. | |
Glib::RefPtr< DataHandler > | get_data_handler_dbms (const Glib::RefPtr< Connection >& cnc, const Glib::ustring& for_type) |
Find a Gda::DataHandler object to manipulate data of type for_type. | |
Glib::RefPtr< const DataHandler > | get_data_handler_dbms (const Glib::RefPtr< Connection >& cnc, const Glib::ustring& for_type) const |
Find a Gda::DataHandler object to manipulate data of type for_type. | |
Glib::RefPtr< DataHandler > | get_data_handler_g_type (const Glib::RefPtr< Connection >& cnc, GType for_type) |
Find a Gda::DataHandler object to manipulate data of type for_type. | |
Glib::RefPtr< const DataHandler > | get_data_handler_g_type (const Glib::RefPtr< Connection >& cnc, GType for_type) const |
Find a Gda::DataHandler object to manipulate data of type for_type. | |
Glib::ustring | get_default_dbms_type (const Glib::RefPtr< Connection >& cnc, GType type) const |
Get the name of the most common data type which has type type. | |
Glib::ustring | get_name () const |
Get the name (identifier) of the provider. | |
Glib::RefPtr< SqlParser > | create_parser (const Glib::RefPtr< Connection >& cnc) |
Creates a new Gda::SqlParser object which is adapted to provider (and possibly depending on cnc for the actual database version). | |
Value | string_to_value (const Glib::RefPtr< Connection >& cnc, const Glib::ustring&string, GType prefered_type, Glib::ustring& dbms_type) const |
Use provider to create a new Value from a single string representation. | |
Glib::RefPtr< DataHandler > | get_data_handler_default (const Glib::RefPtr< Connection >& cnc, GType type, const Glib::ustring& dbms_type) |
Provides the implementation when the default Libgda's data handlers must be used. | |
std::string | find_file (const std::string& inst_dir, const std::string& filename) |
Finds the location of a filename. | |
bool | perform_operation_default (const Glib::RefPtr< Connection >& cnc, const Glib::RefPtr< ServerOperation >& op) |
Performs the operation described by op, using the SQL from the rendering of the operation. | |
Related Functions | |
(Note that these are not member functions.) | |
Glib::RefPtr < Gnome::Gda::ServerProvider > | wrap (GdaServerProvider* object, bool take_copy=false) |
A Glib::wrap() method for this object. |
Base class for all the DBMS providers.
The ServerProvider class is an abstract class which all the DBMS providers must inherit, and implement its virtual methods.
virtual Gnome::Gda::ServerProvider::~ServerProvider | ( | ) | [virtual] |
Glib::RefPtr<ServerOperation> Gnome::Gda::ServerProvider::create_operation | ( | const Glib::RefPtr< Connection >& | cnc, |
ServerOperationType | type, | ||
const Glib::RefPtr< Set >& | options | ||
) |
Creates a new Gda::ServerOperation object which can be modified in order to perform the type type of action.
The options can contain: <itemizedlist> <listitem>named values which ID is a path in the resulting GdaServerOperation object, to initialize some value</listitem> <listitem>named values which may change the contents of the GdaServerOperation, see <link linkend="gda-server-op-information-std">this section</link> for more information</listitem> </itemizedlist>
cnc | A Gda::Connection object which will be used to perform an action, or 0 . |
type | The type of operation requested. |
options | An optional list of parameters. |
0
in the provider does not support the type type of operation or if an error occurred. Glib::RefPtr<ServerOperation> Gnome::Gda::ServerProvider::create_operation | ( | const Glib::RefPtr< Connection >& | cnc, |
ServerOperationType | type | ||
) |
Creates a new Gda::ServerOperation object which can be modified in order to perform the type type of action.
The options can contain: <itemizedlist> <listitem>named values which ID is a path in the resulting GdaServerOperation object, to initialize some value</listitem> <listitem>named values which may change the contents of the GdaServerOperation, see this section for more information</listitem> </itemizedlist>
cnc | A Gda::Connection object which will be used to perform an action, or 0 . |
type | The type of operation requested. |
0
in the provider does not support the type type of operation or if an error occurred. Glib::RefPtr<SqlParser> Gnome::Gda::ServerProvider::create_parser | ( | const Glib::RefPtr< Connection >& | cnc ) |
Creates a new Gda::SqlParser object which is adapted to provider (and possibly depending on cnc for the actual database version).
If prov does not have its own parser, then 0
is returned, and a general SQL parser can be obtained using Gda::SqlParser::new().
cnc | A Gda::Connection, or 0 . |
0
. Glib::ustring Gnome::Gda::ServerProvider::escape_string | ( | const Glib::RefPtr< Connection >& | cnc, |
const Glib::ustring & | str | ||
) | const |
Escapes str for use within an SQL command (to avoid SQL injection attacks).
Note that the returned value still needs to be enclosed in single quotes before being used in an SQL statement.
cnc | A Gda::Connection object, or 0 . |
str | A string to escape. |
std::string Gnome::Gda::ServerProvider::find_file | ( | const std::string & | inst_dir, |
const std::string & | filename | ||
) |
Finds the location of a filename.
This function should only be used by database provider's implementations
inst_dir | Directory where prov is installed. |
filename | Name of the file to find. |
0
if not found. Glib::RefPtr<const DataHandler> Gnome::Gda::ServerProvider::get_data_handler_dbms | ( | const Glib::RefPtr< Connection >& | cnc, |
const Glib::ustring & | for_type | ||
) | const |
Find a Gda::DataHandler object to manipulate data of type for_type.
cnc | A Gda::Connection object, or 0 . |
for_type | A DBMS type definition. |
0
if the provider does not know about the for_type type. Glib::RefPtr<DataHandler> Gnome::Gda::ServerProvider::get_data_handler_dbms | ( | const Glib::RefPtr< Connection >& | cnc, |
const Glib::ustring & | for_type | ||
) |
Find a Gda::DataHandler object to manipulate data of type for_type.
cnc | A Gda::Connection object, or 0 . |
for_type | A DBMS type definition. |
0
if the provider does not know about the for_type type. Glib::RefPtr<DataHandler> Gnome::Gda::ServerProvider::get_data_handler_default | ( | const Glib::RefPtr< Connection >& | cnc, |
GType | type, | ||
const Glib::ustring & | dbms_type | ||
) |
Provides the implementation when the default Libgda's data handlers must be used.
cnc | A Gda::Connection object, or 0 . |
type | A Type. |
dbms_type | A DBMS type definition. |
0
. Glib::RefPtr<DataHandler> Gnome::Gda::ServerProvider::get_data_handler_g_type | ( | const Glib::RefPtr< Connection >& | cnc, |
GType | for_type | ||
) |
Find a Gda::DataHandler object to manipulate data of type for_type.
The returned object must not be modified.
cnc | A Gda::Connection object, or 0 . |
for_type | A Type. |
0
if the provider does not support the requested for_type data type. Glib::RefPtr<const DataHandler> Gnome::Gda::ServerProvider::get_data_handler_g_type | ( | const Glib::RefPtr< Connection >& | cnc, |
GType | for_type | ||
) | const |
Find a Gda::DataHandler object to manipulate data of type for_type.
The returned object must not be modified.
cnc | A Gda::Connection object, or 0 . |
for_type | A Type. |
0
if the provider does not support the requested for_type data type. Glib::ustring Gnome::Gda::ServerProvider::get_default_dbms_type | ( | const Glib::RefPtr< Connection >& | cnc, |
GType | type | ||
) | const |
Get the name of the most common data type which has type type.
The returned value may be 0
either if the provider does not implement that method, or if there is no DBMS data type which could contain data of the g_type type (for example 0
may be returned if a DBMS has integers only up to 4 bytes and a G_TYPE_INT64 is requested).
cnc | A Gda::Connection object or 0 . |
type | A Type value type. |
0
. Glib::ustring Gnome::Gda::ServerProvider::get_name | ( | ) | const |
Get the name (identifier) of the provider.
Glib::ustring Gnome::Gda::ServerProvider::get_server_version | ( | const Glib::RefPtr< Connection >& | cnc ) | const |
Get the version of the database to which the connection is opened.
cnc | A Gda::Connection object. |
0
if an error occurred. Glib::ustring Gnome::Gda::ServerProvider::get_version | ( | ) | const |
Get the version of the provider.
const GdaServerProvider* Gnome::Gda::ServerProvider::gobj | ( | ) | const [inline] |
Provides access to the underlying C GObject.
Reimplemented from Glib::ObjectBase.
GdaServerProvider* Gnome::Gda::ServerProvider::gobj | ( | ) | [inline] |
Provides access to the underlying C GObject.
Reimplemented from Glib::ObjectBase.
GdaServerProvider* Gnome::Gda::ServerProvider::gobj_copy | ( | ) |
Provides access to the underlying C instance. The caller is responsible for unrefing it. Use when directly setting fields in structs.
bool Gnome::Gda::ServerProvider::perform_operation | ( | const Glib::RefPtr< Connection >& | cnc, |
const Glib::RefPtr< ServerOperation >& | op | ||
) |
Performs the operation described by op.
Note that op is not destroyed by this method and can be reused.
cnc | A Gda::Connection object which will be used to perform the action, or 0 . |
op | A Gda::ServerOperation object. |
true
if no error occurred. bool Gnome::Gda::ServerProvider::perform_operation_default | ( | const Glib::RefPtr< Connection >& | cnc, |
const Glib::RefPtr< ServerOperation >& | op | ||
) |
Performs the operation described by op, using the SQL from the rendering of the operation.
cnc | A Gda::Connection object which will be used to perform an action, or 0 . |
op | A Gda::ServerOperation object. |
true
if no error occurred. Glib::ustring Gnome::Gda::ServerProvider::render_operation | ( | const Glib::RefPtr< Connection >& | cnc, |
const Glib::RefPtr< ServerOperation >& | op | ||
) |
Creates an SQL statement (possibly using some specific extensions of the DBMS) corresponding to the op operation.
Note that the returned string may actually contain more than one SQL statement.
This function's purpose is mainly informative to get the actual SQL code which would be executed to perform the operation; to actually perform the operation, use perform_operation().
cnc | A Gda::Connection object which will be used to render the action, or 0 . |
op | A Gda::ServerOperation object. |
0
if an error occurred or operation cannot be rendered as SQL. Value Gnome::Gda::ServerProvider::string_to_value | ( | const Glib::RefPtr< Connection >& | cnc, |
const Glib::ustring & | string, | ||
GType | prefered_type, | ||
Glib::ustring & | dbms_type | ||
) | const |
Use provider to create a new Value from a single string representation.
The preferred_type can optionally ask provider to return a Value of the requested type (but if such a value can't be created from string, then 0
is returned); pass G_TYPE_INVALID if any returned type is acceptable.
The returned value is either a new Value or 0
in the following cases:
If dbms_type is not 0
, then if will contain a constant string representing the database type used for the conversion if the conversion was successfull, or 0
otherwise.
cnc | A Gda::Connection object, or 0 . |
string | The SQL string to convert to a value. |
preferred_type | A Type, or G_TYPE_INVALID. |
dbms_type | Place to get the actual database type used if the conversion succeeded, or 0 . |
0
. bool Gnome::Gda::ServerProvider::supports_feature | ( | const Glib::RefPtr< Connection >& | cnc, |
ConnectionFeature | feature | ||
) | const |
Tests if a feature is supported.
cnc | A Gda::Connection object, or 0 . |
feature | Gda::ConnectionFeature feature to test. |
true
if feature is supported. bool Gnome::Gda::ServerProvider::supports_operation | ( | const Glib::RefPtr< Connection >& | cnc, |
ServerOperationType | type, | ||
const Glib::RefPtr< Set >& | options | ||
) | const |
Tells if provider supports the type of operation on the cnc connection, using the (optional) options parameters.
cnc | A Gda::Connection object which would be used to perform an action, or 0 . |
type | The type of operation requested. |
options | A list of named parameters, or 0 . |
true
if the operation is supported. Glib::ustring Gnome::Gda::ServerProvider::unescape_string | ( | const Glib::RefPtr< Connection >& | cnc, |
const Glib::ustring & | str | ||
) | const |
Unescapes str for use within an SQL command.
This is the exact opposite of escape_string().
cnc | A Gda::Connection object, or 0 . |
str | A string to escape. |
Glib::ustring Gnome::Gda::ServerProvider::value_to_sql_string | ( | const Glib::RefPtr< Connection >& | cnc, |
const Value& | from | ||
) | const |
Produces a fully quoted and escaped string from a GValue.
cnc | A Gda::Connection object, or 0 . |
from | Value to convert from. |
0
if not supported. Glib::RefPtr< Gnome::Gda::ServerProvider > wrap | ( | GdaServerProvider * | object, |
bool | take_copy = false |
||
) | [related] |
A Glib::wrap() method for this object.
object | The C instance. |
take_copy | False if the result should take ownership of the C instance. True if it should take a new copy or ref. |