23 | Persist error @ManyToMany how to define correct entities relationships private long id; @ManyToMany(cascade=CascadeType.PERSIST) private List<Category> categories ... private long id; public Category(int id) { this.id = id ... private long id; @ManyToMany(cascade=CascadeType.PERSIST) private List |
20 | General Performance Issues Illustrated with a Specific Method<ClientBasicData> listPatientsByIDsWithBasicData(String ids) { Long st = new Date().getTime ... size = " + cs.size()); Long ed = new Date().getTime(); System.out.println ... ) private Long id; private static final long serialVersionUID = 1L; @Index @OneToOne |
18 | Join performance in Objectdb(); System.out.println("Database population completed."); long ms, result, elapsedTime ... (); TypedQuery<Long> q1 = em.createQuery( "SELECT COUNT(a) FROM A a, B b, C c " + "WHERE a.bId = b.id AND a.cId = c.id", Long.class); result = q1.getSingleResult |
3 | sumAsLong(x)Method javax.persistence.criteria.CriteriaBuilder Expression<Long> sumAsLong( Expression<Integer> x ) Create an aggregate expression applying the sum operation to an Integer-valued expression, returning a Long result. Parameters: x - expression representing input value to sum operation Returns: sum expression Since: JPA 2.0 |
3 | javax.persistence.GeneratedValue") @Column(name="CUST_ID") public Long getId() { return id; } Example 2: @Id @GeneratedValue(strategy=TABLE, generator="CUST_GEN") @Column(name="CUST_ID") Long id |
3 | toLong(number)Method javax.persistence.criteria.CriteriaBuilder Expression<Long> toLong( Expression<?> number ) Typecast. Returns same expression object. Parameters: number - numeric expression Returns: Expression<Long> Since: JPA 2.0 |
3 | javax.persistence.Version, Integer, short, Short, long, Long, java.sql.Timestamp. Example: @Version @Column(name |
0 | setRange(fromInclToExcl) can be either String representations of long values, or can be parameters identified with a leading ... is done at the data store. Parameters: fromInclToExcl - comma-separated fromIncl and toExcl values Since: JDO 2.0 See Also: setRange(long, long) |
0 | setRange(fromIncl, toExcl)Method javax.jdo.Query void setRange( long fromIncl, long toExcl ) Set the range of results to return. The execution of the query is modified to return only a subset of results. If the filter ... exclusive end index, or Long.MAX_VALUE for no limit. Since: JDO 2.0 |
0 | javax.jdo.spi.PersistenceCapable.ObjectIdFieldManager 1.0 long fetchLongField(int fieldNumber) Fetch one field from the field manager. Fetch one field ... fieldNumber, long value) Store one field into the field manager. Store one field into the field |
