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 of the input to the prefilter, unless negotiated otherwise.
actual_charset	`char *`	The character set (specified by the external library as part of negotiation) the external prefilter library produces its output in. If is_binary is 0, this is also the actual character set of the input to the prefilter. 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