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OPENJPA-1425: Lieralize value if they appear in selection clause for databases that do not support parameters in selection terms. 

git-svn-id: https://svn.apache.org/repos/asf/openjpa/trunk@889490 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Pinaki Poddar 2009-12-11 02:26:13 +00:00
parent 77c3242465
commit b1ee063aa4
3 changed files with 30 additions and 0 deletions
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3
openjpa-jdbc/src/main/java/org/apache/openjpa/jdbc/kernel/exps/SelectConstructor.java
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@ -228,6 +228,9 @@ public class SelectConstructor
Val resultVal;
for (int i = 0; i < exps.projections.length; i++) {
resultVal = (Val) exps.projections[i];
if (!ctx.store.getDBDictionary().supportsParameterInSelect && resultVal instanceof Lit) {
((Lit)resultVal).setRaw(true);
}
// have to join through to related type for pc object
// projections; this ensures that we have all our joins cached
state.projections[i] = resultVal.initialize(sel, ctx,

1
openjpa-jdbc/src/main/java/org/apache/openjpa/jdbc/sql/DBDictionary.java
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@ -181,6 +181,7 @@ public class DBDictionary
public int maxIndexNameLength = 128;
public int maxIndexesPerTable = Integer.MAX_VALUE;
public boolean supportsForeignKeys = true;
public boolean supportsParameterInSelect = true;
public boolean supportsForeignKeysComposite = true;
public boolean supportsUniqueConstraints = true;
public boolean supportsDeferredConstraints = true;

26
openjpa-persistence-jdbc/src/test/java/org/apache/openjpa/persistence/criteria/TestTypesafeCriteria.java
View File

@ -25,12 +25,14 @@ import java.util.HashMap;
import java.util.List;
import java.util.Map;
import javax.persistence.EntityManager;
import javax.persistence.Parameter;
import javax.persistence.Query;
import javax.persistence.Tuple;
import javax.persistence.TypedQuery;
import javax.persistence.criteria.CriteriaQuery;
import javax.persistence.criteria.Expression;
import javax.persistence.criteria.Fetch;
import javax.persistence.criteria.Join;
import javax.persistence.criteria.JoinType;
import javax.persistence.criteria.ListJoin;
@ -1477,4 +1479,28 @@ public class TestTypesafeCriteria extends CriteriaTest {
assertTrue(result.getClass() + " not instance of Time", result instanceof Time);
}
// public void testInMemoryAccessPath() {
// em.getTransaction().begin();
// // must have new/dirty managed instances to exercise the code path
// em.persist(new Customer());
// CriteriaQuery<Customer> cquery = cb.createQuery(Customer.class);
// Root<Customer> customer = cquery.from(Customer.class);
// Fetch<Customer, Account> c = customer.fetch("accounts", JoinType.LEFT);
// cquery.where(cb.like(customer.<String>get("firstName"), "a%")).select(customer).distinct(true);
// TypedQuery<Customer> tquery = em.createQuery(cquery);
// tquery.setMaxResults(3);
// List<Customer> result = tquery.getResultList();
//
// }
public void testLiteralInProjection() {
String jpql = "select 'a' from Customer c where c.id=10";
CriteriaQuery<String> cq = cb.createQuery(String.class);
Root<Customer> c = cq.from(Customer.class);
cq.select(cb.toString(cb.literal('a')));
cq.where(cb.equal(c.get(Customer_.id), 10));
assertEquivalence(cq, jpql);
}
}