Topic Selector A topic selector identifies one or more topics and are created from a pattern expression. More...

Typedefs
typedef struct DIFFUSION_TOPIC_SELECTOR_T	DIFFUSION_TOPIC_SELECTOR_T
	Opaque Topic Selector struct.

Functions
DIFFUSION_TOPIC_SELECTOR_T *	diffusion_topic_selector_create (char expression, DIFFUSION_API_ERROR error)
	Return a DIFFUSION_TOPIC_SELECTOR_T struct for the given expression. More...

bool	diffusion_topic_selector_selects (DIFFUSION_TOPIC_SELECTOR_T topic_selector, char topic_path)
	Evaluate a topic selector against a topic path. More...

void	diffusion_topic_selector_free (DIFFUSION_TOPIC_SELECTOR_T *topic_selector)
	Free a topic selector. More...

Detailed Description

Topic Selector A topic selector identifies one or more topics and are created from a pattern expression.

Function Documentation

DIFFUSION_TOPIC_SELECTOR_T* diffusion_topic_selector_create	(	char *	expression,
		DIFFUSION_API_ERROR *	error
	)

Return a DIFFUSION_TOPIC_SELECTOR_T struct for the given expression.

Parameters

expression	The expression to be used for evaluating topic paths.
error	Populated on API error. Can be NULL.

Returns: The topic selector struct for the given expression if the operation was successful, NULL otherwise. In this case, if a non-NULL error pointer has been provided, this will be populated with the error information and should be freed with diffusion_api_error_free.

void diffusion_topic_selector_free ( DIFFUSION_TOPIC_SELECTOR_T * topic_selector )

Free a topic selector.

Parameters

topic_selector The topic selector.

bool diffusion_topic_selector_selects	(	DIFFUSION_TOPIC_SELECTOR_T *	topic_selector,
		char *	topic_path
	)

Evaluate a topic selector against a topic path.

Parameters

topic_selector	The topic selector.
topic_path	The topic path to evaluate against.

Returns: true is the topic selector selects the topic path, false otherwise.