ExpressionProperty Class Reference

Provides additional information about the filter expression passed to com.rti.dds.topic.WriterContentFilter.writer_compile. More...

Inherits Struct.

Public Attributes
boolean	key_only_filter = false
	Indicates if the filter expression is based only on key fields. In this case, RTI Connext itself can cache the filtering results. More...
boolean	writer_side_filter_optimization = false
	Indicates if the filter implementation can cache the filtering result for the provided expression. More...

Detailed Description

Provides additional information about the filter expression passed to com.rti.dds.topic.WriterContentFilter.writer_compile.

It is used by the filter implementation to indicate to the middleware whether or not the com.rti.dds.topic.WriterContentFilter will cache the result of filter evaluation.

Member Data Documentation

key_only_filter

boolean key_only_filter = false

Indicates if the filter expression is based only on key fields. In this case, RTI Connext itself can cache the filtering results.

When this field is set to com.rti.dds.infrastructure.true, it indicates to RTI Connext that the filter expression is based only on key fields.

writer_side_filter_optimization

boolean writer_side_filter_optimization = false

Indicates if the filter implementation can cache the filtering result for the provided expression.

When this field is set to com.rti.dds.infrastructure.true, RTI Connext will do no caching or explicit filter evaluation for the associated com.rti.dds.subscription.DataReader. Instead, it will rely on the filter implementation to provide appropriate results.