WebSphere Application Server 8 で OpenJPA 2.1 を使用しています。次のような双方向の oneToMay リレーションがあります。
@Entity(name = "table1")
public class Table1 {
@Id
@Column(columnDefinition = "DATE")
private Date date;
@OneToMany(mappedBy = "date", targetEntity = Table2.class, fetch = FetchType.LAZY, cascade = CascadeType.PERSIST)
private List<Table2> table2List;
}
@Entity(name = "table2")
public class Tabl2{
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private long id;
@ManyToOne(cascade = CascadeType.ALL)
@JoinColumn(name = "fk_date", nullable = false)
private Table1 table1;
@Column(name = "value", nullable = false, columnDefinition = "INT")
private int value;
}
今、次のような table2 の条件で table1 エンティティ全体を選択したいと思います。
TypedQuery<WeekBean> q = em.createQuery(
"SELECT t1 from table1 t1 JOIN FETCH t1.table2List t2 WHERE t2.value = :value",
t1.class);
しかし、ArgumentException が発生するため、これは機能しません。
Exception in thread "main" <openjpa-2.1.1-SNAPSHOT-r422266:1141200 nonfatal user error> org.apache.openjpa.persistence.ArgumentException: " Encountered "f" at character 50, but expected [",", ".", "GROUP", "HAVING", "INNER", "JOIN", "LEFT", "ORDER", "WHERE", <EOF>]."
at org.apache.openjpa.kernel.jpql.JPQLParser.parse(JPQLParser.java:51)
at org.apache.openjpa.kernel.ExpressionStoreQuery.newCompilation(ExpressionStoreQuery.java:154)
at org.apache.openjpa.datacache.QueryCacheStoreQuery.newCompilation(QueryCacheStoreQuery.java:262)
at org.apache.openjpa.kernel.QueryImpl.newCompilation(QueryImpl.java:672)
at org.apache.openjpa.kernel.QueryImpl.compilationFromCache(QueryImpl.java:654)
at org.apache.openjpa.kernel.QueryImpl.compileForCompilation(QueryImpl.java:620)
at org.apache.openjpa.kernel.QueryImpl.compileForExecutor(QueryImpl.java:682)
at org.apache.openjpa.kernel.QueryImpl.compile(QueryImpl.java:589)
at org.apache.openjpa.persistence.EntityManagerImpl.createQuery(EntityManagerImpl.java:996)
at com.ibm.ws.persistence.EntityManagerImpl.createQuery(EntityManagerImpl.java:107)
at com.ibm.ws.persistence.EntityManagerImpl.createQuery(EntityManagerImpl.java:86)
at com.ibm.ws.persistence.EntityManagerImpl.createQuery(EntityManagerImpl.java:34)
at org.apache.openjpa.persistence.EntityManagerImpl.createQuery(EntityManagerImpl.java:974)
コレクションの条件で JOIN FETCH を使用するにはどうすればよいですか?
宜しくお願いします