我的所有实体都使用此类@Id
@Id
@GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "MYENTITY_SEQ")
@SequenceGenerator(name = "MYENTITY_SEQ", sequenceName = "MYENTITY_SEQ")
@Column(name = "MYENTITY", nullable = false)
private Long id;
或
@Id
@Column(name = "MYENTITY")
我发现始终创建名为hibernate_sequence
的Oracle序列。为什么会这样?我怎么能避免这个?
我正在使用JPA1和Hibernate 3以及Oracle 10g方言。
答案 0 :(得分:10)
HIBERNATE_SEQUENCE与REVINFO实体一起用于创建修订号。如果要使用不同的顺序,则应创建自定义修订实体。
帮助: http://docs.jboss.org/hibernate/envers/3.5/reference/en-US/html/revisionlog.html
答案 1 :(得分:4)
我在org.hibernate.id.SequenceGenerator
中看到以下代码:
public void configure(Type type, Properties params, Dialect dialect) throws MappingException {
ObjectNameNormalizer normalizer = ( ObjectNameNormalizer ) params.get( IDENTIFIER_NORMALIZER );
sequenceName = normalizer.normalizeIdentifierQuoting(
PropertiesHelper.getString( SEQUENCE, params, "hibernate_sequence" )
);
parameters = params.getProperty( PARAMETERS );
if ( sequenceName.indexOf( '.' ) < 0 ) {
final String schemaName = normalizer.normalizeIdentifierQuoting( params.getProperty( SCHEMA ) );
final String catalogName = normalizer.normalizeIdentifierQuoting( params.getProperty( CATALOG ) );
sequenceName = Table.qualify(
dialect.quote( catalogName ),
dialect.quote( schemaName ),
dialect.quote( sequenceName )
);
}
else {
// if already qualified there is not much we can do in a portable manner so we pass it
// through and assume the user has set up the name correctly.
}
this.identifierType = type;
sql = dialect.getSequenceNextValString( sequenceName );
}
PropertiesHelper.getString(String, Properties, String)
的第三个参数是默认属性值。
所以我很想说,在某个地方,你有Id
没有“正确”注释。也许你应该进行一些调试会议。
答案 2 :(得分:-3)
我怀疑是因为我正在使用Hibernate Envers,因为我已经对我的实体进行了双重检查,所有这些实体都有正确的@Id映射。