DDS_LocatorFilter_t Struct Reference
[LOCATORFILTER]

Specifies the configuration of an individual channel within a MultiChannel DataWriter. More...

List of all members.

Public Attributes

struct DDS_LocatorSeq locators
 Sequence containing from one to four DDS_Locator_t, used to specify the multicast address locators of an individual channel within a MultiChannel DataWriter.
char * filter_expression
 A logical expression used to determine the data that will be published in the channel.


Detailed Description

Specifies the configuration of an individual channel within a MultiChannel DataWriter.

QoS:
DDS_LocatorFilterQosPolicy

Member Data Documentation

Sequence containing from one to four DDS_Locator_t, used to specify the multicast address locators of an individual channel within a MultiChannel DataWriter.

[default] Empty sequence.

A logical expression used to determine the data that will be published in the channel.

If the expression evaluates to TRUE, a sample will be published on the channel.

An empty string always evaluates the expression to TRUE.

A NULL value is not allowed.

The syntax of the expression will depend on the value of DDS_LocatorFilterQosPolicy::filter_name

Important: This value must be an allocated string with DDS_String_alloc or DDS_String_dup. It should not be assigned to a string constant.

See also:
Queries and Filters Syntax
[default] NULL (invalid value)


RTI Data Distribution Service C++ API Version 4.5e Copyright © 23 Oct 2011 Real-Time Innovations, Inc