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fix MySQL test case problem. 

git-svn-id: https://svn.apache.org/repos/asf/openjpa/trunk@811557 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Fay Wang 2009-09-04 21:23:43 +00:00
parent 7bcdee7a60
commit 35ef9efaec
1 changed files with 15 additions and 0 deletions
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15
openjpa-persistence-jdbc/src/test/java/org/apache/openjpa/persistence/query/TestSubquery.java
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@ -24,6 +24,10 @@ import java.util.List;
import javax.persistence.EntityManager; import javax.persistence.EntityManager;
import javax.persistence.Query; import javax.persistence.Query;
import org.apache.openjpa.jdbc.conf.JDBCConfiguration;
import org.apache.openjpa.jdbc.sql.DBDictionary;
import org.apache.openjpa.jdbc.sql.DerbyDictionary;
import org.apache.openjpa.jdbc.sql.MySQLDictionary;
import org.apache.openjpa.persistence.query.Customer.CreditRating; import org.apache.openjpa.persistence.query.Customer.CreditRating;
import org.apache.openjpa.persistence.test.SingleEMFTestCase; import org.apache.openjpa.persistence.test.SingleEMFTestCase;
@ -230,6 +234,9 @@ public class TestSubquery
public void testSubquery() { public void testSubquery() {
JDBCConfiguration conf = (JDBCConfiguration) emf.getConfiguration();
DBDictionary dict = conf.getDBDictionaryInstance();
EntityManager em = emf.createEntityManager(); EntityManager em = emf.createEntityManager();
for (int i = 0; i < querys_jpa20.length; i++) { for (int i = 0; i < querys_jpa20.length; i++) {
String q = querys_jpa20[i]; String q = querys_jpa20[i];
@ -244,6 +251,14 @@ public class TestSubquery
assertEquals(0, rs.size()); assertEquals(0, rs.size());
} }
// MySQL throws exception for the jpql in the updates:
// "You can't specify target table 'xxx' for update in FROM clause". The MySQL manual mentions
// this at the bottom of the UPDATE documentation(http://dev.mysql.com/doc/refman/5.0/en/update.html):
// “Currently, you cannot update a table and select from the same table in a subquery.”
if (dict instanceof MySQLDictionary)
return;
em.getTransaction().begin(); em.getTransaction().begin();
for (int i = 0; i < updates.length; i++) { for (int i = 0; i < updates.length; i++) {
int updateCount = em.createQuery(updates[i]).executeUpdate(); int updateCount = em.createQuery(updates[i]).executeUpdate();