a_init_pre_filter structure

typedef struct a_init_pre_filter {
   a_text_source          *in_text_source;   /* IN */
   a_text_source          *out_text_source;  /* OUT */
   const char             *desired_charset;  /* IN */
   char                   *actual_charset;   /* OUT */
   short                  is_binary;         /* IN */
} a_init_pre_filter;

Name	Type	Description
in_text_source	`a_text_source *`	The pointer to the producer of the external prefilter (a_text_source object) to be created. Specified by the caller of the prefilter entry point function.
out_text_source	`a_text_source *`	The pointer to the external prefilter (a_text_source object) specified by the prefilter entry point function.
desired_charset	`const char *`	The character set the caller of the entry point function expects the output of the prefilter to be in. If is_binary flag is 0, this is also the character set the input to the prefilter will be in, unless negotiated otherwise.
actual_charset	`char *`	The character set (specified by the external library as part of negotiation) the external prefilter library will produce its output in. If is_binary is 0, this is also the actual character set of the input to the prefilter. Note that it is preferable that the library accept and produce the data in desired_charset, if possible.
is_binary	`short`	Whether the input data is in binary (1) or in desired_charset (0). If the data is in binary, the database server does not introduce character set conversion before the prefilter on the pipeline.

The a_init_pre_filter structure is defined by a header file named extpfapiv1.h, in the SDK\Include subdirectory of your SQL Anywhere installation directory.

a_init_pre_filter structure

Syntax

Members

Remarks

See also