1. How do you enable hibernate query cache on a session level only? stackoverflow.comGood day, What if I have a query that gets called multiple times in a single thread, and I just want to cache that query (and its result) for that thread (or ... |
2. Hibernate query cache - for objects not in the 2nd level cache - risky? usefull? bad practice? stackoverflow.comRelated to this question Premise: These are my assumptions, based on my reading, experience and understanding, they may be wrong, if they are, please comment and I'll edit the question.
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3. What is side effects of not closing org.hibernate.classic.Session after querying? stackoverflow.comI wonder what can happen and what is not guaranteed. |
4. Some queries regarding Hibernate Session Behaviour? stackoverflow.comi have below main programme |
5. Some queries regarding Hibernate Session Behaviour? coderanch.comi have below main programme Person p1 = new Person(); p1.setName("mohit"); Address add1= new Address(); add1.setAddressLine1("jawahar"); p1.setAddress(add1); session.save(p1);//LineB // Create another Person object and save it. Person p2 = new Person(); p2.setName("sachin"); session.save(p2);//LineC Person p3 = new Person(); p3.setName("ajay"); session.save(p3);//LineD // Retrieve the person objects person = (Person)session. get(Person.class,1);//LineE person = (Person)session.get(Person.class, 2);//LineF person = (Person)session.get(Person.class, 4);//LineG tx.commit();//LineH tx = null; ... |
6. Session cache have very nasty impact on some select forum.hibernate.org |
7. current or open session selection forum.hibernate.orgHi all, I am developing a web application and I wanna learn which is more effective way,if someone help, I ll be very thank. What is the best way? 1.open a hibernate session when client connected and getcurrentsession when needed. 2.open a hibernate session, make the job, close the session whenever needed.(ofcourse I need to close session after page rendered). I ... |
8. Query over session cache forum.hibernate.orgI have a situation where in a transaction scope I don't know if some objects has been persisted (and cached in session) or not, so if object doesn't exits I create it at this time. I forced session not to flush until tx commits. If I know the identity of the object, no problem, I perform a find by id with ... |
9. session.find() limiting the results coming forum.hibernate.org |
10. oakward behaivour with session.find() forum.hibernate.orgHi guys I'm new to Hibernate and I will appreciate some help with some awkward behavior I just can't fix I am using Oracle 9i and working with a table named users with a pk char(16) the thing is that when I request a List with one user with the next statements: String id="Administrator"; List objects=session.find("from User as user where user.userId=?",id,Hibernate.STRING); ... |
11. Sign "diffent" in session.find() ? forum.hibernate.org |
12. session.find() can't see newly added objects forum.hibernate.orgHi all Suppose I have a table TEMP with column A being the PK and b and c are attributes, so: TEMP(A, b, c) and I have a corresponding object Temp.java mapped to this table. PK column A has an Oracle sequence and Hibernate is mapped to know this. It all works in Hibernate. If I do: Temp t = new ... |
13. IN clause in session.find() forum.hibernate.orghello, I want to run this kind of query: from X x where x.y in (?) I found examples of this using session.createQuery() but none using session.find() directly. Is it possible at all? If it is, what should I specify as the type of the parameter? I am using Hibernate 2.0.3. best regards, erik |
14. Session Find One to Many to Many forum.hibernate.orgHi All I am looking for help with the following scenario. I have 3 tables Consumer --> Brand -- > Campaign I would like to return Consumer, for firstName, lastName and DateOfBirth, and Brands, for brandName and Campaigns for campaignCode. The Result from my query must be Consumer, i.e From Consumer con where con.firstName = ? and con.lastName = ? and ... |
15. analogue session.find(query) ??? forum.hibernate.org |
16. Error on session.find forum.hibernate.orgNewbie Joined: Fri Dec 12, 2003 7:38 am Posts: 5 Hi, I am new in hybernate. I use hiberbate 2.0 with Jboss 3.2.1 When I run the following querry: Code: List lst = session.find( ... |
17. Caching query results per session forum.hibernate.orgI want to cache query results per session. Within one session, I do not want to execute the same query twice with the same parameters. Once the session is finished, I don't want to cache anymore. It's not read-only data, but if the same method that calls a query gets executed twice in the same session, I don't want it to ... |
18. [Beginner] Use the result of session.find() forum.hibernate.org |
19. Hibernate.initialize or session.find? forum.hibernate.orgAuthor Message nerotnt Post subject: Hibernate.initialize or session.find? Posted: Wed Feb 18, 2004 7:25 am Pro Joined: Wed Oct 08, 2003 10:31 am Posts: 247 ----------- Model ----------- Code: mp_req_item (PK: mp_requisicao_fk, mp_fk) | | |----------> mp (PK: id) | |----------> mp_requisicao_sq044 (PK: id) -------------------------------------------------------- Mapping files (generated with Middlegen R3): -------------------------------------------------------- MpRequisicaoSq044 Code: |
20. Stale object with session.find() after session.close() forum.hibernate.orgNewbie Joined: Wed Feb 11, 2004 9:58 pm Posts: 3 Hello,I am using hibernate-2.1.2 with a web application,Tomcat 5 with JSP2.0 and Servlet 2.4. My problem is that when I update a object(a User instance here) and close the session,Then find() will get the stale object. For example.I first list the Users.there is a User with name "UserA".then I update the ... |
21. the query for selecting a specific item using session.find forum.hibernate.orgI have this query to select a department name of a specific user. The argument is name of the user, it would return the department object User.JAVA public class User { private Integer id; private String userName; //many other properties private Department fkDept; public Integer getId() { return id; } public void setId(Integer theId) { id = theId; } public String ... |
22. session.find what happens? forum.hibernate.orgI want to find the optimal tradeoff between network roundtrips and response time. I want to find out how many data should be send to the client at once. Retunning an array of data transfer objects should reduce network roundtrips. I assume that fetching objects from the cache should be as fast as the database access. The C++ client I made ... |
23. Strange behavior: the same query twice in the same session forum.hibernate.orgI have two named queries that run iteratively within the same session, query a runs then b then a again, etc. The first time through both run fine, but when query a tries to run again (with new where clause variables), it throws a "Can't write to a readonly object" exception. If I clear the session, it runs fine. Why would ... |
24. Handling large datasets with session.find(...) forum.hibernate.orgHi We are using Session.find( ... ) to query a table with 18000 objects in it. When we have an object containing a set (one-to-many) of other objects, Hibernate is clever enough to lazy initialise the set - only retreiving a subset of the total resultset. this works well and is fast. When we use the find method directly which returns ... |
25. How to update a query in other session ? forum.hibernate.org |
26. How can I avoid unnecessary DB query before session.update() forum.hibernate.orgread hibernate in action (and think about it again when taking into consideration LifeCycle, Interceptor, session scoped identity and where attributes and other stuff you can map in the mapping files!) We simply cannot deduce the equal sql deletes and magic java code you might want executed on an objects deletion.... but as i said - you will get the possiblity ... |
27. Session.find() versus Query forum.hibernate.org |
28. the session.find() method suports only 89999 registers? forum.hibernate.org |
29. "in expected" error when executing session.find forum.hibernate.orgI'm getting the following error: Code: net.sf.hibernate.QueryException: in expected: i [from item i where ? in i.description] at net.sf.hibernate.hql.FromParser.token(FromParser.java:102) at net.sf.hibernate.hql.ClauseParser.token(ClauseParser.java:87) at net.sf.hibernate.hql.PreprocessingParser.token(PreprocessingParser.java:123) at net.sf.hibernate.hql.ParserHelper.parse(ParserHelper.java:29) at net.sf.hibernate.hql.QueryTranslator.compile(QueryTranslator.java:149) at net.sf.hibernate.hql.QueryTranslator.compile(QueryTranslator.java:138) at net.sf.hibernate.impl.SessionFactoryImpl.getQuery(SessionFactoryImpl.java:295) at net.sf.hibernate.impl.SessionImpl.getQueries(SessionImpl.java:1572) at ... |
30. session.find forum.hibernate.org |
31. net.sf.hibernate.Session.find(...) absoleted in 3 ? forum.hibernate.org |
32. sql-query with simple join is leaving a dirty session. forum.hibernate.orgI'm using an sql-query because I want to join on a table which hasn't yet been mapped in hibernate. My simple test, which loads a single mapped object, works but leaves session.isDirty() = true. Peeking inside the session reveals that there are no actions in actionQueue: in fact, the only field in session which has data is persistenceContext.entitiesByKey, which has the ... |
33. Where Can I find " net.sf.hibernate.Session" libra forum.hibernate.org |
34. How to get native SQL from Session or Query? forum.hibernate.orgHi, im not sure bout this, but i think your need is to execute native sql in hibernate, is that correct ? If so, please refer to the reference ...hibernate-3.0/doc/reference/en/html/querysql.html Some excerps : ************************************************ Chapter 17. Native SQL You may also express queries in the native SQL dialect of your database. This is useful if you want to utilize database specific ... |
35. AutoNumber+session.find forum.hibernate.orghi all, I'm using MS Access XP as a DB with struts and using Hibernate and I have an id feild (pk) "AutoNumber". what is the compatible type with "AutoNumber". I used Long or long but the error in session.find is: Caused by: java.sql.SQLException: [Microsoft][ODBC Microsoft Access Driver]Optional feature not implemented at sun.jdbc.odbc.JdbcOdbc.createSQLException(JdbcOdbc.java:6879) at sun.jdbc.odbc.JdbcOdbc.standardError(JdbcOdbc.java:7036) at sun.jdbc.odbc.JdbcOdbc.SQLBindInParameterBigint(JdbcOdbc.java:1179) at sun.jdbc.odbc.JdbcOdbcPreparedStatement.setLong(JdbcOdbcPreparedStatement.java:592) at net.sf.hibernate.type.LongType.set(LongType.java:35) ... |
36. How migratation of the method session.find forum.hibernate.org |
37. Query cache - session ? forum.hibernate.orgHello, I turn on the second level cache and the query cache. I have a question about query cache : Here is the test I run : - I make a query => the result is placed in cache - I close my hibernate session - I get a new session - I execute the same query, Hibernate asks again the ... |
38. Replacement for Session.find() in Hib 3.1 forum.hibernate.orgSession interface Certain redundant methods were deprecated and removed from the org.hibernate.Session interface. However, to make migration easier, these methods are still available, via the org.hibernate.classic.Session subinterface. These deprecated methods are: * query execution methods: find(), iterate(), filter(), delete() * saveOrUpdateCopy() Hibernate3 applications should use createQuery() for all query execution, DELETE queries for bulk delete and merge() instead of saveOrUpdateCopy(). Existing ... |
39. Finding Session from an Object forum.hibernate.org |
40. Lost session on second HQL query. forum.hibernate.orgGreetings all my first post. I have successfully executed a simple HQL query returning a cartline given a cartlineid. My issue is that when doing a refresh or executing a query with a different cartlineid during the session I receive a null pointer exception. First successfull query: From the Log: Hibernate: select cartlinedo0_.cartid as col_0_0_ from cartline cartlinedo0_ where cartlinedo0_.cartlineid=? Unsuccessfull ... |
41. Session or database level query forum.hibernate.orgMy application has certain access priviliges and certain users can only see certain datasets. For instance 'salespeople' can only see Territory data for territories they are assigned. Is there a way to apply criteria at the db or session level as opposed to having to do it for all of our queries? thanks, Tom |
42. can't use Session.find.. need help forum.hibernate.orgI used the query thing you just send me like this to get all of the messages from the data base.. public static void main( String args[] ) { try { SessionFactory sessionFactory = new Configuration().configure(). buildSessionFactory(); Session session = sessionFactory.openSession(); Query query = session.createQuery("from Message as m order by m.text asc"); List messages = query.list(); for(Iterator i = messages.iterator(); i.hasNext();) ... |
43. Current session cache making query lookups slower forum.hibernate.orgHi, I used Hibernate for my object model to persist. I needed to import raw data from legacy database to my object model database. I had to deal with a huge number of rows (1 - 15 million rows) In this process, to import an object, I had to check for the existence of the object and do either insert/update (save ... |
44. Finding dirty objects present in a hibernate session forum.hibernate.orgUnfortunately there isn't a method like: session.getDirtyObjects(). It appears to me that Hibernate figures out which objects are dirty at the identitymap level during a flush. What I've done before is fixed up all the setters of my classes, for example: private boolean changed = false; private String firstName; public void setFirstName(String firstName) { setChanged(this.firstName != firstName); this.firstName = firstName; } ... |
45. Hibernate session closing/best approach to run query forum.hibernate.orgHere is a general desc of my app: I am running through the database of an LMS with hibernate and deleting records such as test and activity history, saved tests, users, and etc. At the present time I am just deleting the records the show a users progress on an activity. I have zipped up the app portion of my our ... |
46. Find amount of queries executed per Session forum.hibernate.org |
47. 'ALTER SESSION SET NLS_SORT=SCHINESE_PINYIN_M' doesn't work forum.hibernate.orgI want to get a list sort by some Chinese column with SCHINESE_PINYIN_M, so I write code as following: session.createSQLQuery("ALTER SESSION SET NLS_SORT=SCHINESE_PINYIN_M"); List accounts = session.createCriteria(Account.class).addOrder(Order.asc("chineseName")).list(); But it doesn't work, so I rewrite the query as following: accounts = session.createQuery("from Account order by NLSSORT(chineseLegalName,'NLS_SORT=SCHINESE_PINYIN_M')").list(); It works, the problem is I need to alter the session parameter as there are too ... |
48. Move Query to another session forum.hibernate.org |
49. Querying the session for (as yet) uncommitted changes forum.hibernate.org |
50. Select query using session.get forum.hibernate.orgHi All, i am new to hibernate.. 1.i want to write a select query using session.get(Myclass.class, id) option in hibernate.. The 'id' used in session.get(Myclass.class, id) is not a primary key... i came to know that get option works if the parameter id is a primary key ,is it true? 2.i have a nested query where i can fetch data using ... |
51. query cache in first level (session) forum.hibernate.org |
52. Session cache sometimes breaks query contract forum.hibernate.orgHi All, I stumped with this issue recently and googled around, but can not find any answer till now. Below is description of the problem: I have an entity named "operation". It has a timestamp field keeping track of creation timestamp, and a status field with possible values of "successful", "failed", "running". A simplified version of the OperationDAOHibernateImpl is defined as ... |
53. Does HQL ,Criteria Query checks Session Cache forum.hibernate.orgCriteria and HQL query also use session cache, but they DO a query on the database. Before hydrating the resultset to the fetched data it is checked, whether these objects have already be loaded. This is important to achieve "==" equality within a session: Code: Customer customer = session.get(Customer.class, 1L); ... |
54. Session.find in Hibernate internally calls update and fail forum.hibernate.orgAuthor Message rmamila Post subject: Session.find in Hibernate internally calls update and fail Posted: Wed Jul 08, 2009 11:55 pm Newbie Joined: Fri Jun 05, 2009 3:01 am Posts: 4 Hello All, Hello All, I am gettign this viered problem in selecting record from database. It internally tries to do an update to the record at the end of ... |
55. how to count all queries per session forum.hibernate.orgHi, I would like to count all queries per session. Do You know any solutions how to achieve that. I have just tried Interceptor with overridding the method onPrepareStatement, however this approach isn' t perfect, just because hibernate has a pool with Prepared Statement, and doesn't call that method twice for the same sql statement. If You know possibility to disable ... |