Inherits From:
EOAdaptorContext : NSObject
Declared in: OracleEOAdaptor/OracleContext.h
The features the OracleContext class adds to EOAdaptorContext are methods for returning Oracle-specific data structures that describe characteristics of the context: hostDataArea
and logonDataArea
. hostDataArea
returns the hda_def
data structure, and logonDataArea
returns the lda_def
data structure. If you intend to extend the OracleContext by making calls to the Oracle API, you'll need these data structures.
connect
Opens a connection to the database server. OracleChannel sends this message to OracleContext when it (OracleChannel) is about to open a channel to the server.
See also: - disconnect
disconnect
- (void)disconnect
Closes a connection to the database server. OracleChannel sends this message to OracleContext when it (OracleChannel) has just closed a channel to the server.
See also: - connect
fetchesInProgress
- (unsigned)fetchesInProgress
Returns the number of fetches the receiver has in progress.
hostDataArea
- (unsigned char *)hostDataArea
If the channel is connected, returns an Oracle-specific data structure describing characteristics of the context. Otherwise, returns NULL. This method is commonly used with the OracleChannel method raiseOracleError
to determine why an error occurred.
See also: - logonDataArea
isConnected
- (BOOL)isConnected
Returns YES if the receiver has an open connection to the database, NO otherwise.
See also: - connect , - disconnect
logonDataArea
- (void *)logonDataArea
If the channel is connected, returns an Oracle-specific data structure describing characteristics of the context. Otherwise, returns NULL. This method is commonly used with the OracleChannel method raiseOracleError
to determine why an error occurred.
See also: - hostDataArea
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