[#SES-511] SameTermFilterOptimizer should remove processed SameTerm/Filter nodes if possible

Issue Details [XML]

Key:	SES-511
Type:	Improvement
Status:	Closed
Resolution:	Fixed
Priority:	Minor
Assignee:	Arjohn Kampman
Reporter:	Arjohn Kampman
Votes:	0
Watchers:	0

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SameTermFilterOptimizer should remove processed SameTerm/Filter nodes if possible

Created: 09/Jan/08 11:34 AM Updated: 20/Mar/08 08:11 PM

Component/s:

Query Engine

Affects Version/s:

None

Fix Version/s:

2.0.1

Description

SameTerm/Filter combinations of the form SameTerm(var, constant) that have been processed by assigning the constant value to the variable should be removed from the query model tree if possible. This will make it easier to translate the query to SQL in the rdbms sail that is being worked on.

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Comment by Arjohn Kampman [10/Jan/08 02:10 PM]

The SameTerm constraints are now replaced with Bound constraints. Removing the constraints completely is not always possible as the variable might be unbound, for example in the case of left joins and unions.