hibernate-criteria

问题 Intro I have a weird task - to write on Hibernate Criteria API (i.e. in database independent style) SQL query similar to select * from branch b where '2/5/3/' like b.hier_path + '%' where + is concatenation operator. Concatenation operator is database dependent '+' in MS SQL, '||' in Oracle etc. I must use Criteria API (and no way to switch to HQL). Problem #1 - like operator Unfortunately, Hibernate allows to write only Criteria based on Java object property: pCriteria.createCriteria(Branch

问题 public List<Staffing> upcoming(){ List<Staffing> staffing = new ArrayList<Staffing>(); Criteria criteria = getCriteria(); criteria.add(Restrictions.isNotNull("startDate")).add(Restrictions.le("startDate", new Date())); criteria.add(Restrictions.isNotNull("endDate")).add(Restrictions.ge("endDate", new Date())); criteria.add(Restrictions.eq("softDelete", false)); criteria.setProjection(Projections.projectionList().add(Projections.groupProperty("user"))); DetachedCriteria maxDateQuery =

问题 public List<Staffing> upcoming(){ List<Staffing> staffing = new ArrayList<Staffing>(); Criteria criteria = getCriteria(); criteria.add(Restrictions.isNotNull("startDate")).add(Restrictions.le("startDate", new Date())); criteria.add(Restrictions.isNotNull("endDate")).add(Restrictions.ge("endDate", new Date())); criteria.add(Restrictions.eq("softDelete", false)); criteria.setProjection(Projections.projectionList().add(Projections.groupProperty("user"))); DetachedCriteria maxDateQuery =

问题 I face above issue when try to sort based on an embedded field; eg: I try to sort with the property tObservation.raw.waterLevel.metre . But getting following exception. Caused by: org.hibernate.QueryException: Criteria objects cannot be created directly on components. Create a criteria on owning entity and use a dotted property to access component property: tObservation.raw at org.hibernate.loader.criteria.CriteriaQueryTranslator.getPathInfo(CriteriaQueryTranslator.java:251) I create aliases

问题 SELECT * FROM test.pchi new INNER JOIN rlhi old ON new_id = old.menu_id where new.name='?' Similar to: Select * from db.employee emp INNER JOIN db.table on emp_tableID = table.id where emp.name = '?' If you could tell me how to do a projection, that would be awesome... as in: Select emp.name, emp.sex, table.brand from .... I tried using fetch, but I'm very new to this and keep getting some weird errors. Could someone please demonstrate how to do this? How about this? sess.createCriteria(pchi

问题 I have two entities Issue and Issue_Tracker . I have joined both table in an one to many mapping. In Issue_Tracker , We can have multiple entries like issue_id tracker_status tracked_time 123 Assigned 1/8/2013 11:44 123 Assigned 1/8/2013 11:45 123 Completed 1/8/2013 11:52 32 Assigned 1/9/2013 16:46 33 Assigned 1/9/2013 16:47 33 Cancel 1/9/2013 16:49 I want to Order the Issue_tracker entity by tracked_time so I can get only last update tracker_status .I am using criteria to get data,However I

问题 I have two entities Issue and Issue_Tracker . I have joined both table in an one to many mapping. In Issue_Tracker , We can have multiple entries like issue_id tracker_status tracked_time 123 Assigned 1/8/2013 11:44 123 Assigned 1/8/2013 11:45 123 Completed 1/8/2013 11:52 32 Assigned 1/9/2013 16:46 33 Assigned 1/9/2013 16:47 33 Cancel 1/9/2013 16:49 I want to Order the Issue_tracker entity by tracked_time so I can get only last update tracker_status .I am using criteria to get data,However I

问题 The model is that a user can have many LoginSessions (LogginSession can be related to only one user). What I am trying to achieve is bring the user with related LoginSession (which's token provided in the query). All of that I am trying to do with only one query, and to do so I want to use eager loading, here is my code: I have this code: LoginSession loginSession = new LoginSession(); loginSession.setToken(sessionToken); //Example loginSessionExample = Example.create(loginSession); Criteria

问题 There is a one to many relationship between College & student entities. College @Entity public class College { private int collegeId; private String collegeName; private List<Student> students; @Id @GeneratedValue public int getCollegeId() { return collegeId; } public void setCollegeId(int collegeId) { this.collegeId = collegeId; } public String getCollegeName() { return collegeName; } public void setCollegeName(String collegeName) { this.collegeName = collegeName; } @OneToMany(targetEntity

问题 I have a pretty complex criteria, which I use to retrieve, sort and page server-side data. I stripped down the following excerpt: // create criteria over a bunch of tables... Criteria testCriteria = getSession().createCriteria(PriceRequest.class) .setResultTransformer(CriteriaSpecification.DISTINCT_ROOT_ENTITY) .setFetchMode("pricedBy", FetchMode.JOIN) .setFetchMode("canceledBy", FetchMode.JOIN) .setFetchMode("product", FetchMode.JOIN) .setFetchMode("product.underlyings", FetchMode.JOIN)