Issue 17364: Allow for more optimized list returned by get_datareaders() (data-distribution-rtf)
Source: Real-Time Innovations (Mr. Fernando Sanchez, )
Nature: Revision
Severity: Significant
Summary: Found by: Fernando Crespo
Severity: 


Problem: 
OMG DDS spec (section  7.1.2.5.2.10) states that the sequence returned by 
get_datareaders() will contain list containing each DataReader one or more times. 
For example, if multiple consecutive samples in a group belong to the same DataReader
the DataReader is repeated in the list returned by get_datareaders(). 
Having to process each element, even when they belong to the same DataReader is
less performant. 


Proposed Resolution: 
Modify the specification to return one DataReader element, instead of a list where
a DataReader is repeated multiple times, when multiple subsequent samples belong to 
the same DataReader. This allows for more optimized processing where the user calls
read/take until the return code is NO_DATA.  



Resolution: 
Revised Text: 
Actions taken:
May 8, 2012: received issue
Discussion: 

End of Annotations:=====
s is issue # 17364	From: Fernando Sanchez <fernando@rti.com>

Issue: Allow for more optimized list returned by get_datareaders()

Found by: Fernando Crespo
Severity: 

Problem: 
OMG DDS spec (section  7.1.2.5.2.10) states that the sequence returned by 
get_datareaders() will contain list containing each DataReader one or more times. 
For example, if multiple consecutive samples in a group belong to the same DataReader
the DataReader is repeated in the list returned by get_datareaders(). 
Having to process each element, even when they belong to the same DataReader is
less performant. 

Proposed Resolution: 
Modify the specification to return one DataReader element, instead of a list where
a DataReader is repeated multiple times, when multiple subsequent samples belong to 
the same DataReader. This allows for more optimized processing where the user calls
read/take until the return code is NO_DATA.