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InformixChannel

Inherits from: EOAdaptorChannel : NSObject

Package: com.apple.yellow.informixeoadaptor

Class Description

An InformixChannel represents an independent communication channel to the database server its InformixAdaptor is connected to. All of an InformixChannel's operations take place within the context of transactions controlled or tracked by its InformixContext. An InformixContext can manage multiple InformixChannels, and a channel is associated with only one context.

The features InformixChannel adds to EOAdaptorChannel are as follows:

Informix-specific error handling (see InformixChannel.Delegate)
The ability to configure the fetch buffer
The ability to read a list of table names from the database

Method Types

Finding table names

setInformixTableNamesSQL

informixTableNamesSQL

Setting the fetch buffer length

setFetchBufferLength

fetchBufferLength

Instance Methods

fetchBufferLength

public int fetchBufferLength()

Returns the size, in bytes, of the fetch buffer. The larger the buffer, the more rows can be returned for each round trip to the server.

informixTableNamesSQL

public String informixTableNamesSQL()

Returns the SQL statement the receiver uses to find table names. The user default InformixTableNamesSQL overrides a statement set with setInformixTableNamesSQL.

setFetchBufferLength

public void setFetchBufferLength(int length)

Sets the size (in bytes) of the fetch buffer to length. The larger the buffer, the more rows can be returned for each round trip to the server.

setInformixTableNamesSQL

public void setInformixTableNamesSQL(String sql)

Set the SQL statement the receiver uses to find table names to sql.

WebObjects 4.5 Developer Documentation