Question

I’m trying the following JPQL and it fails misserably:

Query query = em.createQuery("SELECT u FROM User u WHERE 'admin' MEMBER OF u.roles");
List users = query.query.getResultList();

I get the following exception:

ERROR [main] PARSER.error(454) | <AST>:0:0: unexpected end of subtree
java.lang.IllegalArgumentException: org.hibernate.hql.ast.QuerySyntaxException: unexpected end of subtree [SELECT u FROM com.online.data.User u WHERE 'admin' MEMBER OF u.roles] ERROR [main] PARSER.error(454) | <AST>:0:0: expecting "from", found '<ASTNULL>'
...
...
Caused by: org.hibernate.hql.ast.QuerySyntaxException: unexpected end of subtree [SELECT u FROM com.online.data.User u WHERE 'admin' MEMBER OF u.roles]

I have Spring 3.0.1.RELEASE, Hibernate 3.5.1-Final and maven to glue dependencies.

User class:

@Entity
public class User {
  @Id
  @Column(name = "USER_ID")
  @GeneratedValue(strategy = GenerationType.IDENTITY)
  private long id;
  @Column(unique = true, nullable = false)
  private String username;

  private boolean enabled;

  @ElementCollection
  private Set<String> roles = new HashSet<String>();

...
}

Spring configuration:

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context"
 xmlns:tx="http://www.springframework.org/schema/tx" xmlns:p="http://www.springframework.org/schema/p" xmlns:aop="http://www.springframework.org/schema/aop"
 xsi:schemaLocation="
       http://www.springframework.org/schema/beans 
       http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
       http://www.springframework.org/schema/context 
       http://www.springframework.org/schema/tx/spring-context-3.0.xsd
       http://www.springframework.org/schema/tx 
       http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
       http://www.springframework.org/schema/aop 
       http://www.springframework.org/schema/aop/spring-aop-3.0.xsd">

 <!-- Reading annotation driven configuration -->
 <tx:annotation-driven transaction-manager="transactionManager" />

 <bean class="org.springframework.dao.annotation.PersistenceExceptionTranslationPostProcessor" />
 <bean class="org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor" />

 <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
  <property name="driverClassName" value="${jdbc.driverClassName}" />
  <property name="url" value="${jdbc.url}" />
  <property name="username" value="${jdbc.username}" />
  <property name="password" value="${jdbc.password}" />
  <property name="maxActive" value="100" />
  <property name="maxWait" value="1000" />
  <property name="poolPreparedStatements" value="true" />
  <property name="defaultAutoCommit" value="true" />
 </bean>

 <bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
  <property name="entityManagerFactory" ref="entityManagerFactory" />
  <property name="dataSource" ref="dataSource" />
 </bean>

 <bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
  <property name="dataSource" ref="dataSource" />
  <property name="jpaVendorAdapter">
   <bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
    <property name="showSql" value="true" />
    <property name="databasePlatform" value="${hibernate.dialect}" />
   </bean>
  </property>
  <property name="loadTimeWeaver">
   <bean class="org.springframework.instrument.classloading.InstrumentationLoadTimeWeaver" />
  </property>
  <property name="jpaProperties">
   <props>
    <prop key="hibernate.hbm2ddl.auto">update</prop>
    <prop key="hibernate.current_session_context_class">thread</prop>
    <prop key="hibernate.cache.provider_class">org.hibernate.cache.NoCacheProvider</prop>
    <prop key="hibernate.show_sql">true</prop>
    <prop key="hibernate.format_sql">false</prop>
    <prop key="hibernate.show_comments">true</prop>
   </props>
  </property>
  <property name="persistenceUnitName" value="punit" />
 </bean>

 <bean id="JpaTemplate" class="org.springframework.orm.jpa.JpaTemplate">
  <property name="entityManagerFactory" ref="entityManagerFactory" />
 </bean>



</beans>

Persistence.xml

<?xml version="1.0" encoding="UTF-8"?>
<persistence xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xsi:schemaLocation="http://java.sun.com/xml/ns/persistence">

 <persistence-unit name="punit" transaction-type="RESOURCE_LOCAL" />

</persistence>

pom.xml maven dependencies.

  <dependency>
   <groupId>org.hibernate</groupId>
   <artifactId>hibernate</artifactId>
   <version>${hibernate.version}</version>
   <type>pom</type>
  </dependency>
  <dependency>
   <groupId>org.hibernate</groupId>
   <artifactId>hibernate-core</artifactId>
   <version>${hibernate.version}</version>
  </dependency>
  <dependency>
   <groupId>org.hibernate</groupId>
   <artifactId>hibernate-annotations</artifactId>
   <version>${hibernate.version}</version>
  </dependency>
  <dependency>
   <groupId>org.hibernate</groupId>
   <artifactId>hibernate-entitymanager</artifactId>
   <version>${hibernate.version}</version>
  </dependency>
  <dependency>
   <groupId>commons-dbcp</groupId>
   <artifactId>commons-dbcp</artifactId>
   <version>1.2.2</version>
   <type>jar</type>
  </dependency>
  <dependency>
   <groupId>org.springframework.security</groupId>
   <artifactId>spring-security-web</artifactId>
   <version>${spring.version}</version>
  </dependency>
  <dependency>
   <groupId>org.springframework.security</groupId>
   <artifactId>spring-security-config</artifactId>
   <version>${spring.version}</version>
  </dependency>
  <dependency>
   <groupId>org.springframework.security</groupId>
   <artifactId>spring-security-taglibs</artifactId>
   <version>${spring.version}</version>
  </dependency>
  <dependency>
   <groupId>org.springframework.security</groupId>
   <artifactId>spring-security-acl</artifactId>
   <version>${spring.version}</version>
  </dependency>
  <dependency>
   <groupId>javax.annotation</groupId>
   <artifactId>jsr250-api</artifactId>
   <version>1.0</version>
  </dependency>
 <properties>
  <!-- Application settings -->
  <spring.version>3.0.1.RELEASE</spring.version>
  <hibernate.version>3.5.1-Final</hibernate.version>

Im running a unit test to check the configuration and I am able to run other JPQL queries the only ones that I am unable to run are the IS EMPTY, MEMBER OF conditions.

The complete unit test is as follows:

TestIntegration

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations =  { "/spring/dataLayer.xml"})
@Transactional
@TransactionConfiguration
public class TestUserDaoImplIntegration {
  @PersistenceContext
  private EntityManager em;

  @Test
  public void shouldTest() throws Exception {
    try {
//WORKS
Query query = em.createQuery("SELECT u FROM User u WHERE 'admin' in elements(u.roles)"); 
List users = query.query.getResultList();
    } catch (Exception e) {
      e.printStackTrace();
      throw e;
    }
    try {
//DOES NOT WORK
Query query = em.createQuery("SELECT u FROM User u WHERE 'admin' MEMBER OF u.roles"); 
List users = query.query.getResultList();
    } catch (Exception e) {
      e.printStackTrace();
      throw e;
    }
  }
}

Answer 1

Your query looks perfectly fine to me. For the record, this is what the JPA 2.0 specification writes about the MEMBER OF operator:

4.6.13 Collection Member Expressions

The syntax for the use of the
comparison operator MEMBER OF in an collection_member_expression is as follows:

   collection_member_expression ::=
            entity_or_value_expression [NOT] MEMBER [OF] collection_valued_path_expression
   entity_or_value_expression ::=
            single_valued_object_path_expression |
            state_field_path_expression |
            simple_entity_or_value_expression
   simple_entity_or_value_expression ::=
            identification_variable |
            input_parameter |
            literal

This expression tests whether the designated value is a member of
the collection specified by the
collection-valued path expression.

Expressions that evaluate to
embeddable types are not supported in
collection member expressions. Support
for use of embeddables in collection
member expressions may be added in a
future release of this specification.

If the collection valued path
expression designates an empty
collection, the value of the MEMBER
OF expression is FALSE and the value
of the NOT MEMBER OF expression is
TRUE. Otherwise, if the value of the
collection_valued_path_expression or entity_or_value_expression in the collection member expression is NULL
or unknown, the value of the
collection member expression is
unknown.

Example:

SELECT p
FROM Person p
WHERE 'Joe' MEMBER OF p.nicknames

So, because I can’t see anything wrong in your query, I’ve tested your code with EclipseLink¹ and the following snippet just works:

Query query = em.createQuery("SELECT u FROM User u WHERE 'admin' MEMBER OF u.roles");
List list = query.getResultList();

But fails indeed with Hibernate EntityManager 3.5.1-Final. This sounds like a bug, feel free to raise a Jira issue.

¹ Just in case, I used the following Maven profile (for the JPA provider):

  <profile>
    <id>eclipselink</id>
    <repositories>
      <repository>
        <id>eclipselink</id>
        <url>http://www.eclipse.org/downloads/download.php?r=1&amp;nf=1&amp;file=/rt/eclipselink/maven.repo/</url>
      </repository>
    </repositories>
    <dependencies>
      <!-- See http://wiki.eclipse.org/EclipseLink/Maven -->
      <dependency>
        <groupId>org.eclipse.persistence</groupId>
        <artifactId>eclipselink</artifactId>
        <version>2.0.0</version>
      </dependency>
      <!-- optional - only needed if you are using JPA outside of a Java EE container-->
      <dependency>
        <groupId>org.eclipse.persistence</groupId>
        <artifactId>javax.persistence</artifactId>
        <version>2.0.0</version>
        <scope>provided</scope>
      </dependency>              
    </dependencies>
  </profile>

And this is my persistence.xml:

<?xml version="1.0" encoding="UTF-8"?>
<persistence
    xmlns="http://java.sun.com/xml/ns/persistence"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd"
    version="2.0">

  <persistence-unit name="TestPu" transaction-type="RESOURCE_LOCAL">    
    <class>com.stackoverflow.q2688144.User</class>    
    <properties>
      <property name="javax.persistence.jdbc.driver" value="org.apache.derby.jdbc.EmbeddedDriver"/>
      <property name="javax.persistence.jdbc.url" value="jdbc:derby:testdb;create=true"/>    
      <property name="eclipselink.target-database" value="DERBY"/>
      <property name="eclipselink.ddl-generation" value="drop-and-create-tables"/>
    </properties>
  </persistence-unit>
</persistence>

Update: reported in HHH-5209