Thomas Darimont created OPENJPA-2484:
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Summary: JPA-QL query with byte[] projection fails.
Key: OPENJPA-2484
URL: https://issues.apache.org/jira/browse/OPENJPA-2484
Project: OpenJPA
Issue Type: Bug
Components: jpa
Affects Versions: 2.2.2
Reporter: Thomas Darimont
Given a User entity with a persistent byte[] field declared as:
@Lob private byte[] binaryData;
When executing the following JPA query:
select u.binaryData from User u where u.id = :id
{code:java}
User user = new User();
user.setBinaryData("TEST".getBytes());
em.persist(user);
Object result = em.createQuery("select u.binaryData from User u
where u.id = :id").setParameter("id", user.getId())
.getSingleResult();
assertThat(result,is(notNullValue()));
{code}
The following exception is thrown:
{code}
<openjpa-2.3.0-r422266:1540826 nonfatal user error>
org.apache.openjpa.persistence.ArgumentException: Query projections cannot
include array, collection, or map fields. Invalid query: "select u.binaryData
from User u where u.id = :id"
at
org.apache.openjpa.kernel.ExpressionStoreQuery$AbstractExpressionExecutor.assertNotContainer(ExpressionStoreQuery.java:328)
at
org.apache.openjpa.kernel.ExpressionStoreQuery$DataStoreExecutor.<init>(ExpressionStoreQuery.java:770)
at
org.apache.openjpa.kernel.ExpressionStoreQuery.newDataStoreExecutor(ExpressionStoreQuery.java:179)
at
org.apache.openjpa.kernel.QueryImpl.createExecutor(QueryImpl.java:749)
at
org.apache.openjpa.kernel.QueryImpl.compileForDataStore(QueryImpl.java:707)
at
org.apache.openjpa.kernel.QueryImpl.compileForExecutor(QueryImpl.java:689)
at org.apache.openjpa.kernel.QueryImpl.compile(QueryImpl.java:589)
at
org.apache.openjpa.persistence.EntityManagerImpl.createQuery(EntityManagerImpl.java:997)
at
org.apache.openjpa.persistence.EntityManagerImpl.createQuery(EntityManagerImpl.java:979)
at
org.apache.openjpa.persistence.EntityManagerImpl.createQuery(EntityManagerImpl.java:102)
at
org.example.domain.OpenJpaPlainJpaTests.foo(OpenJpaPlainJpaTests.java:301)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at
org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)
at
org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at
org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
at
org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at
org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
at
org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271)
at
org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70)
at
org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229)
at
org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
at
org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
at
org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
{code}
Other JPA implementations like Hibernate or EclipseLink support this.
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