rti::routing::processor::Query Class Reference

Encapsulates a content query to select data from a rti::routing::adapter::StreamReader. More...

#include <Query.hpp>

Inherits Reference< rti::routing::processor::QueryHolder >.

Public Member Functions
	Query (rti::routing::adapter::StreamReader *stream_reader, const dds::topic::Filter &filter)
	Creates a Query described by a filter on a stream_reader.
void	filter (const dds::topic::Filter &filter)
	Updates the current Query content filter.

Detailed Description

Encapsulates a content query to select data from a rti::routing::adapter::StreamReader.

Note that syntax for the query filter is StreamReader implementation dependent. For the DDS Adapter case, the syntax corresponds to that of the SQL filter.

A Query object holds a custom query obtained by calling rti::routing::adapter::StreamReader::create_content_query. Likewise, the deletion of a Query object will call rti::routing::adapter::StreamReader::delete_content_query.

Constructor & Destructor Documentation

rti::routing::processor::Query::Query ( rti::routing::adapter::StreamReader *  stream_reader, const dds::topic::Filter &  filter  )

inline

Creates a Query described by a filter on a stream_reader.

Parameters

[in]	stream_reader	The StreamReader to query the data from.
[in]	filter	Description of the content query based on an expression and parameters.

See Also

dds::topic::Filter

Member Function Documentation

void rti::routing::processor::Query::filter ( const dds::topic::Filter &  filter )

inline

Updates the current Query content filter.

This operation will call rti::routing::adapter::StreamReader::create_content_query providing the current query content data this Query holds.