我有实体
@Entity
@Table(
name = SomeEntity.TABLE_NAME,
uniqueConstraints = {@UniqueConstraint(columnNames = {"first", "second"})}
)
public class SomeEntity extends SomeSuperEntity {
public static final String TABLE_NAME = "SomeEntity";
public SomeEntity() {
}
public SomeEntity(String first, String second, Integer third) {
super(first, second, third);
}
}
此实体的超类
@MappedSuperclass
public abstract class SomeSuperEntity extends SomeSuperAbstractEntity {
@Column(nullable = false)
private String first;
@Column(nullable = false)
private String second;
protected SomeSuperEntity () {
}
protected SomeSuperEntity (String first, String second, Integer third) {
super(third);
this.first= first;
this.second= second;
}
}
第二超类
@MappedSuperclass
public abstract class SomeSuperAbstractEntity {
@Column(nullable = false)
private Integer third;
protected SomeSuperAbstractEntity () {
}
protected SomeSuperAbstractEntity (Integer third) {
this.third= third;
}
}
而且我有这2种方法,首先-用于查找实体
public <T extends SomeSuperEntity > Optional<T> findByFirstAndSecond(String first, String second, Class<T> tClass) {
String hql = String.format("FROM %s E WHERE E.first = :first AND E.second = :second", getTable(tClass));
return jpaApi.em().createQuery(hql, tClass)
.setParameter("first", first)
.setParameter("second", second)
.getResultList().stream().findAny();
}
第二个获取实体名称到hql
private String getTable(Class<? extends SomeSuperEntity > tClass) {
if (tClass.equals(SomeEntity .class)) {
return SomeEntity.TABLE_NAME;
}
return null;
}
当我尝试调用findByFirstAndSecond(“ 1”,“ 2”,SomeEntity.class)时,出现错误
[[错误] ciSomeMethod-错误:org.hibernate.hql.internal.ast.QuerySyntaxException:未映射SomeEntity [FROM SomeEntity E WHERE E.first =:first AND E.second =:second]]] >
我有实体@Entity @Table(name = SomeEntity.TABLE_NAME,uniqueConstraints = {@UniqueConstraint(columnNames = {“ first”,“ second”})}))公共类SomeEntity扩展了...