Java 日食jpql“;where子句;比较时间戳未按预期工作
使用时间戳列进行选择的我的jpql“where子句”没有按预期进行“筛选” 它似乎对时间戳的“日期”部分敏感,但忽略了“时间”部分 table1.tmstmp列定义为:“tmstmp时间戳非空” table1实体包含以下命名查询Java 日食jpql“;where子句;比较时间戳未按预期工作,java,db2,eclipselink,jpql,weblogic12c,Java,Db2,Eclipselink,Jpql,Weblogic12c,使用时间戳列进行选择的我的jpql“where子句”没有按预期进行“筛选” 它似乎对时间戳的“日期”部分敏感,但忽略了“时间”部分 table1.tmstmp列定义为:“tmstmp时间戳非空” table1实体包含以下命名查询 @NamedQuery(name = "table1.getUpdTime", query = "SELECT e FROM table1 e WHERE e.tmstmp >= :tmstmp order by e.tmstmp asc") tmst
@NamedQuery(name = "table1.getUpdTime", query = "SELECT e FROM table1 e
WHERE e.tmstmp >= :tmstmp order by e.tmstmp asc")
tmstmp属性的定义如下
@Column(name = "TMSTMP", nullable = false)
private Timestamp tmstmp;
TypedQuery<EsEvnt> query = em.createNamedQuery("table1.getUpdTime",
table1.class).setParameter("tmstmp", tmstmp);
它是这样使用的
@Column(name = "TMSTMP", nullable = false)
private Timestamp tmstmp;
TypedQuery<EsEvnt> query = em.createNamedQuery("table1.getUpdTime",
table1.class).setParameter("tmstmp", tmstmp);
TypedQuery query=em.createNamedQuery(“table1.getUpdTime”,
表1.class).setParameter(“tmstmp”,tmstmp);
例如,当上面的时间戳变量(“tmstmp”)等于“2016-06-30T09:28:33.247-04:00”时,它返回日期部分为:2016-06-30的所有记录
有什么想法吗
我想依靠“where子句”使用整个时间戳显式地进行选择
谢谢
更新
我使用“CAST”函数修改了我的查询(似乎需要一个本机查询),如下所示,它似乎一直工作
//...note, date is in ISO format...
LocalDateTime ldt = LocalDateTime.parse(tmstmpString, DateTimeFormatter.ISO_DATE_TIME);
Timestamp tmstmp = Timestamp.valueOf(ldt);
-
-
-
// (see "native query", coded below)...
Query query = em.createNativeQuery("SELECT * FROM table1 e WHERE e.tmstmp >= CAST(?1 as TIMESTAMP)", Table1.class)
.setParameter(1, tmstmp);
List<Table1> resultList = query.getResultList();
/…注意,日期是ISO格式的。。。
LocalDateTime ldt=LocalDateTime.parse(tmstmpString,DateTimeFormatter.ISO_DATE_TIME);
Timestamp tmstmp=Timestamp.valueOf(ldt);
-
-
-
//(请参阅下面编码的“本机查询”)。。。
Query Query=em.createNativeQuery(“从表1e中选择*,其中e.tmstmp>=CAST(?1作为时间戳)”,表1.class)
.设置参数(1,tmstmp);
List resultList=query.getResultList();
谢谢!:)
WebLogic 12.1.3 DB2 爪哇8
EclipseLink 2.1这对你有用吗
query.setParameter("tmstmp", tmstmp, TemporalType.DATE)
更新:
@Temporal(TemporalType.TIMESTAMP)
@Column(name = "TMSTMP", nullable = false)
private Date tmstmp;
下面是对我有用的东西 假设
//...note, date is in ISO format...
LocalDateTime ldt = LocalDateTime.parse(tmstmpString, DateTimeFormatter.ISO_DATE_TIME);
Timestamp tmstmp = Timestamp.valueOf(ldt);
这里有一个方法
Query query = entityManager.createNativeQuery("SELECT * FROM table1 e WHERE e.tmstmp >= CAST(?1 as TIMESTAMP)", Table1.class)
.setParameter(1, tmstmp);
List<Table1> resultList = query.getResultList();
Query Query=entityManager.createNativeQuery(“从表1 e中选择*,其中e.tmstmp>=CAST(?1作为时间戳)”,表1.class)
.设置参数(1,tmstmp);
List resultList=query.getResultList();
还有另一种方法
CriteriaBuilder criteriaBuilder = entityManager.getCriteriaBuilder();
CriteriaQuery<Table1> criteriaQuery = criteriaBuilder.createQuery(Table1.class);
Root<Table1> table1 = criteriaQuery.from(Table1.class);
Expression<Byte> expression = table1.get("tmstmp"); // ...NOTE: column name is "tmstmp"...
Expression<Timestamp> castFunction = criteriaBuilder.function("TIMESTAMP", Timestamp.class, expression);
Predicate predicate = criteriaBuilder.greaterThanOrEqualTo(castFunction, tmstmp);
//NOTE: should be able to add to predicate...
// e.g.,
// predicate = criteriaBuilder.and(predicate, otherPredicate);
criteriaQuery.where(predicate);
TypedQuery<Table1> query = entityManager.createQuery(criteriaQuery);
List<Table1> resultList = query.getResultList();
CriteriaBuilder-CriteriaBuilder=entityManager.getCriteriaBuilder();
CriteriaQuery CriteriaQuery=criteriaBuilder.createQuery(Table1.class);
根table1=criteriaQuery.from(table1.class);
表达式=表1.get(“tmstmp”);/。。。注:列名为“tmstmp”。。。
表达式castFunction=criteriaBuilder.function(“TIMESTAMP”,TIMESTAMP.class,Expression);
谓词谓词=criteriaBuilder.greaterThanOrEqualTo(castFunction,tmstmp);
//注意:应该能够添加到谓词。。。
//例如:。,
//谓词=criteriaBuilder.and(谓词,其他谓词);
criteriaQuery.where(谓词);
TypedQuery=entityManager.createQuery(criteriaQuery);
List resultList=query.getResultList();
而tmstmp
字段实际上是一个时间戳
?正如java.sql.Date
将小时、分钟和秒设置为0。是的,“tmstmp”的类型是:Timestamp。谢谢你的邀请!不,那不行-我也试过了,还有“TemporalType.TIMESTAMP”-但是,没有用。谢谢