If there's an integer key column with a NULL value, the Lucene query will return a fake key value (0) rather than NULL. The document id and score will be correct. Example:
ij> create table t1(x int, c clob);
0 rows inserted/updated/deleted
ij> insert into t1 values (null, 'abc'), (null, 'def');
2 rows inserted/updated/deleted
ij> call lucenesupport.createindex('app', 't1', 'c', null, 'x');
0 rows inserted/updated/deleted
ij> select * from table(t1__c('abc or def', null, 3, null)) tc;
X |DOCUMENTID |SCORE
---------------------------------------
0 |0 |0.35355338
0 |1 |0.35355338
2 rows selected
If the key column is a string type, the returned key is correct (NULL). The document id is sometimes correct and sometimes NULL, and the score seems to be NULL always. Example:
ij> create table t2(x varchar(10), c clob);
0 rows inserted/updated/deleted
ij> insert into t2 values (null, 'abc'), (null, 'def');
2 rows inserted/updated/deleted
ij> call lucenesupport.createindex('app', 't2', 'c', null, 'x');
0 rows inserted/updated/deleted
ij> select * from table(t2__c('abc or def', null, 3, null)) tc;
X |DOCUMENTID |SCORE
--------------------------------------
NULL |NULL |NULL
NULL |1 |NULL
2 rows selected
- relates to
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DERBY-590 How to integrate Derby with Lucene API?
-
- Open
-