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[英]How to query JPA LocalDateTime field with a LocalDate value?
[英]How to specify a field, so that when we query, using Joda LocalDate or LocalDateTime value for the field, it is mapped to same column?
我有一個postgres數據庫,其中有一個表"draft"
其中包含一列set_up_time,另存為時間戳:
@Column(nullable = false)
@Type(type = "org.jadira.usertype.dateandtime.joda.PersistentLocalDateTime")
LocalDateTime setUpTime;
由於某些原因,我需要保持這種結構不變。 但是我期望數據庫查詢searching for records, for setUpTime as LocalDateTime and setUpTime as LocalDate
。 我該如何以某種方式映射它,使休眠狀態同時使用這兩種類型的數據庫查詢setUpTime,並相應地返回結果?
我正在使用的架構是:
"create table draft (dtype varchar(31) not null, id int8 not null, creation_time timestamp not null, cust_ord varchar(1), description varchar(255), amount decimal(12, 2), user varchar(6), txn_time timestamp, text1from varchar(36), text2from varchar(36), text3from varchar(36), primary key (id))"
您可以做的是這樣編寫查詢:
public void findDrafts(LocalDate targetDate) {
final Query query = entityManager.createQuery(
"from Draft where setUpTime => :beginOfDay and setUpTime < :beginOfNextDay");
query.setParameter("beginOfDay", targetDate.toDateTimeAtStartOfDay().toLocalDateTime());
query.setParameter("beginOfNextDay", targetDate.plusDays(1).toDateTimeAtStartOfDay().toLocalDateTime());
return query.getResultList();
}
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