PATH  WebObjects 4.0 Documentation > InformixEOAdaptor Reference



InformixContext

Inherits From:
EOAdaptorContext : NSObject

Declared in: InformixEOAdaptor/InformixContext.h


Class Description

An InformixContext represents a single transaction scope on the database server to which its adaptor object is connected. If the server supports multiple concurrent transaction sessions, the adaptor may have several adaptor contexts. An InformixContext may in turn have several InformixChannels, which handle actual access to the data on the server.

The features the InformixContext class adds to EOAdaptorContext are methods for setting Informix-specific characteristics for the context.


Method Types

Managing a connection to the server
- connect
- connection
- disconnect
- isConnected
Returning information about an InformixContext
- fetchesInProgress
- hasTransactions
- isOnLine

Instance Methods


connect

- (void)connect

Opens a connection to the database server. InformixChannel sends this message to InformixContext when it (InformixChannel) is about to open a channel to the server.

See also: - disconnect


connection

- (long)connection

Returns an identifier for the receiver's connection to the server.


disconnect

- (void)disconnect

Closes a connection to the database server. InformixChannel sends this message to InformixContext when it (InformixChannel) has just closed a channel to the server.

See also: - connect


fetchesInProgress

- (unsigned)fetchesInProgress

Returns the number of fetches the receiver has in progress.


hasTransactions

- (BOOL)hasTransactions

Returns YES to indicate that the receiver has transactions in process, NO otherwise.


isConnected

- (BOOL)isConnected

Returns YES if the receiver has an open connection to the database, NO otherwise.

See also: - connect, - disconnect, - isConnected


isOnLine

- (BOOL)isOnLine

Returns YES if Is the server an Informix on-line server, NO otherwise.





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