Struct rmw_subscription_content_filter_options_s
Defined in File subscription_content_filter_options.h
Struct Documentation
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struct rmw_subscription_content_filter_options_s
Public Members
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char *filter_expression
Specify the criteria to select the data samples of interest.
It is similar to the WHERE part of an SQL clause.
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rcutils_string_array_t expression_parameters
Give values to the tokens placeholder ‘parameters’ (i.e., “%n” tokens begin from 0) in the filter_expression. The number of supplied parameters must fit with the requested values.
It can be NULL if there is no “%n” tokens placeholder in filter_expression. The maximum index number must be smaller than 100.
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char *filter_expression