Method: PG::Connection#set_notice_processor

Defined in:

ext/pg_connection.c

#set_notice_processor {|message| ... } ⇒ Proc

See #set_notice_receiver for the description of what this and the notice_processor methods do.

This function takes a new block to act as the notice processor and returns the Proc object previously set, or nil if it was previously the default. The block should accept a single String object.

If you pass no arguments, it will reset the handler to the default.

Yields:

• (message)

Returns:

• (Proc)

# File 'ext/pg_connection.c', line 3037

static VALUE
pgconn_set_notice_processor(VALUE self)
{
	VALUE proc, old_proc;
	t_pg_connection *this = pg_get_connection_safe( self );

	rb_check_frozen(self);
	/* If default_notice_processor is unset, assume that the current
	 * notice processor is the default, and save it to a global variable.
	 * This should not be a problem because the default processor is
	 * always the same, so won't vary among connections.
	 */
	if(this->default_notice_processor == NULL)
		this->default_notice_processor = PQsetNoticeProcessor(this->pgconn, NULL, NULL);

	old_proc = this->notice_processor;
	if( rb_block_given_p() ) {
		proc = rb_block_proc();
		PQsetNoticeProcessor(this->pgconn, gvl_notice_processor_proxy, (void *)self);
	} else {
		/* if no block is given, set back to default */
		proc = Qnil;
		PQsetNoticeProcessor(this->pgconn, this->default_notice_processor, NULL);
	}

	RB_OBJ_WRITE(self, &this->notice_processor, proc);
	return old_proc;
}