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Steven Hawkins updated TEIID-1326:
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Fix Version/s: 7.3
Complexity: Low
Affects: [Documentation (Ref Guide, User Guide, etc.), Release Notes]
API request: rewrite query/command before it reaches the teiid
planner
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Key: TEIID-1326
URL:
https://jira.jboss.org/browse/TEIID-1326
Project: Teiid
Issue Type: Feature Request
Components: Query Engine
Affects Versions: 7.1
Reporter: Mark Addleman
Assignee: Steven Hawkins
Fix For: 7.3
I'd like an API to inspect and rewrite a user query/command before it reaches the
Teiid planner. The use case is to rewrite the query/command to implement view-like
capabilities. For example:
SELECT a,b,c FROM table1 AS t WHERE t.a='xyz' would be rewritten as:
SELECT a,b,c FROM (SELECT a,b,c FROM table2 UNION SELECT a,b,c FROM table3) AS t
I imagine this API would be similar to the translator API: it would receive a data
structure representing the query/command and use a visitor to rewrite the query. As a
convenience, it would be nice to have something similar to the SQLConversionVisitor.
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