Richard Newman
bf38105fef
( #362 ) Part 4: handle unknown attributes by expanding type codes. r=nalexander
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Also, don't run any SQL at all if an algebrized query is known to return no results.
2017-03-08 17:44:27 -08:00
Richard Newman
b5867e9131
( #362 ) Part 3: implement querying against simple keywords. r=nalexander
2017-03-08 17:44:19 -08:00
Richard Newman
ce3a9bdf87
( #362 ) Part 2: use constrain_attribute. r=nalexander
2017-03-08 17:44:11 -08:00
Richard Newman
8935d6a8a5
( #362 ) Part 1: if a variable's type becomes known, don't extract it. r=nalexander
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This is necessary because we process patterns sequentially; a later
pattern might tell us the type of a variable (e.g., by having a
constant attribute), at which point we can do less work.
2017-03-08 17:44:00 -08:00
Richard Newman
e898df8842
Implement basic query limits. ( #361 ) r=nalexander
2017-03-08 17:41:42 -08:00
Richard Newman
70b112801c
Implement projection and querying. ( #353 ) r=nalexander
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* Add a failing test for EDN parsing '…'.
* Expose a SQLValueType trait to get value_type_tag values out of a ValueType.
* Add accessors to FindSpec.
* Implement querying.
* Implement rudimentary projection.
* Export mentat_db::new_connection.
* Export symbols from mentat.
* Add rudimentary end-to-end query tests.
2017-03-06 14:40:10 -08:00
Richard Newman
91c75f26c8
Expand query algebrizer. r=nalexander
2017-02-23 18:39:49 -08:00
Joe Walker
60b2e6f885
Improve Debug output for ConjoiningClauses; r=rnewman
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Fixes #317 , and also removes the '::' exploration of rust style
2017-02-23 14:05:56 +00:00
Richard Newman
a9cd9b1e87
Export symbols and string helpers from mentat_query_algebrizer.
2017-02-17 17:54:07 -08:00
Jordan Santell
a59f9583ac
Store Idents as NamespacedKeywords, rather than Strings. Fixes #291 . ( #300 )
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r=ncalexander
2017-02-17 13:55:36 -08:00
Richard Newman
5af7082165
Partly flesh out query algebrizer. ( #243 ) r=nalexander
2017-02-15 16:10:59 -08:00
Richard Newman
42f03f55a2
Stub out query algebrizer.
2017-02-15 16:01:22 -08:00
