Criteria query IN predicate generates incorrect SQL
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Key: OPENJPA-1494
URL: https://issues.apache.org/jira/browse/OPENJPA-1494
Project: OpenJPA
Issue Type: Bug
Components: query
Affects Versions: 2.0.0
Reporter: Catalina Wei
Junit regression uncovered following problems:
1.a testcase error in TestTypesafeCriteria.testValues5() : this test is
currently annotated @AllowFailure.
the expected sql string is incorrect.
String sql = "SELECT t0.name, t2.id, t2.label FROM CR_ITEM t0 "
+ "INNER JOIN CR_ITEM_photos t1 ON t0.id = t1.ITEM_ID "
+ "INNER JOIN CR_PHT t2 ON t1.VALUE_ID = t2.id WHERE "
+ "(0 = (SELECT COUNT(*) FROM CR_ITEM_photos t3 WHERE "
+ "(t3.VALUE_ID = ? OR t3.VALUE_ID = ? OR t3.VALUE_ID = ? OR
t3.VALUE_ID = ? OR t3.VALUE_ID = ?) "
+ "AND (t0.id = t3.ITEM_ID) AND t0.id = t3.ITEM_ID) "
+ "AND 0 < (SELECT COUNT(*) FROM CR_ITEM_photos WHERE
CR_ITEM_photos.ITEM_ID = t0.id))";
in the last SELECT COUNT(*), the FROM table does not have table alias
assigned.
2. NOT IN expression is transformed into a QueryExpression which resulting SQL
subselects with SELECT COUNT(*) -- there could be a problem in how query
expression tree is built in Criteria Query for IN-Expression.
3: ((CriteriaQueryImpl)q).toCQL() produces the following JPQL string which has
syntax error.
JPQL=SELECT i.name, i.photos FROM Item i INNER JOIN i.photos ? WHERE
i.photos IN ([org.apache.openjpa.persistence.criteria.ph...@22de22de,
org.apache.openjpa.persistence.criteria.ph...@23122312,
org.apache.openjpa.persistence.criteria.ph...@23462346,
org.apache.openjpa.persistence.criteria.ph...@226e226e,
org.apache.openjpa.persistence.criteria.ph...@22aa22aa])
if toCQL() produced the following JPQL, then semantically they would be
equavilence:
SELECT i.name, p FROM Item i INNER JOIN i.photos p where p NOT IN ?1
but JPQL BNF does not allow Object-value 'p' in [NOT] IN conditional
expression.
4. There is no JPQL equivalence query for the criteria query in testValues5().
a closer JPQL string could be:
SELECT i.name, p FROM Item i INNER JOIN i.photos p where p.id NOT IN ?1
where ?1 is a collection-valued-parameter that contains a list of Photo
IDs.
The above JPQL generates following SQL:
8500 test TRACE [main] openjpa.Query - Executing query: [SELECT
i.name, p FROM Item i INNER JOIN i.photos p WHERE p.id not IN ?1] with
parameters: {1=[0, 0, 0, 0, 0]}
8750 test TRACE [main] openjpa.jdbc.SQL - <t 108529272, conn 1628201228>
executing prepstmnt 1532713819 SELECT t0.name, t2.id, t2.label FROM CR_ITEM t0
INNER JOIN CR_ITEM_photos t1 ON t0.id = t1.ITEM_ID INNER JOIN CR_PHT t2 ON
t1.VALUE_ID = t2.id WHERE (NOT (t1.VALUE_ID IN (?, ?, ?, ?, ?))) [params=(int)
0, (int) 0, (int) 0, (int) 0, (int) 0]
as shown in the above, a NOT IN JPQL generated a NOT IN SQL.
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