August 2008 - hibernate-issues - Jboss List Archives

[Hibernate-JIRA] Created: (HHH-2220) session.createSQLQuery(sql) translates database type CHAR(n) to Java type char instead of String

by Regis Pires Magalhaes (JIRA)

session.createSQLQuery(sql) translates database type CHAR(n) to Java type char instead of String ------------------------------------------------------------------------------------------------ Key: HHH-2220 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-2220 Project: Hibernate3 Type: Bug Components: query-sql Versions: 3.2.0.ga Reporter: Regis Pires Magalhaes createSQLQuery() method translates database type CHAR(n) to Java type char instead of String when using setResultTransformer(Criteria.ALIAS_TO_ENTITY_MAP). That happens when I do not use addScalar(). And that is the only problem that I have found when not filling return types in advance. A workaround I have made is to concatenate the projected field with an empty string (''). See example below: ... query.setResultTransformer(Criteria.ALIAS_TO_ENTITY_MAP); String sqlQuery = "select s.name state from state s where s.name='PI' "; query = session.createSQLQuery(sqlQuery); ... result: [{STATE=P}] name field is CHAR(2) in database definition (PostgreSQL, HSQLDB and Oracle were tested). Note that it works when I concatenate the field used in projection with an empty string: ... String sqlQuery = "select s.name || '' state from state s where s.name='PI' "; ... result: [{STATE=PI}] -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://opensource.atlassian.com/projects/hibernate/secure/Administrators.... - For more information on JIRA, see: http://www.atlassian.com/software/jira

12 years, 11 months

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[Hibernate-JIRA] Created: (HHH-2429) SQL Character Types Incorrectly mapped to Java objects

by Tyler Van Gorder (JIRA)

SQL Character Types Incorrectly mapped to Java objects ------------------------------------------------------ Key: HHH-2429 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-2429 Project: Hibernate3 Type: Bug Components: core Versions: 3.2.1 Environment: Hibernate 3.2.1, Oracle10g Reporter: Tyler Van Gorder We have a work flow that allows the user to enter an arbitrary SQL statement to be executed by our application. We pass those queries through session.createSQLQuery(). We ran into a problem with String literals, which are reported by Oracle (ResultSetMetaData) to be CHAR. Reading the JDBC API, CHAR is a fixed length string. Hibernate is incorrectly mapping this to a Character field. We ended up overriding the Oracle dialect with our own as follows: In our constructor, for a dialect that extends Oracle9iDialect: super() registerColumnType(Types.CHAR, "char($l)" ); registerHibernateType( Types.CHAR, Hibernate.STRING.getName() ); The HibernateType is the crucial one and we are overriding the behavior in the base "Dialect" class, so this appears that it would be a problem for all database variants that don't explicitly change this. Thanks. -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://opensource.atlassian.com/projects/hibernate/secure/Administrators.... - For more information on JIRA, see: http://www.atlassian.com/software/jira

12 years, 11 months

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[Hibernate-JIRA] Created: (HHH-3239) MarkerObject should be serializable when using with swf

by Goran Blankendal (JIRA)

MarkerObject should be serializable when using with swf ------------------------------------------------------- Key: HHH-3239 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-3239 Project: Hibernate3 Issue Type: Bug Components: core Affects Versions: 3.2.6 Environment: Hibernate 3.2.6 and Spring Webflow 2.0 Reporter: Goran Blankendal You get a java.io.NotSerializableException: org.hibernate.util.MarkerObject when using hibernate in a persistence context in SWF 2 See http://forum.springframework.org/showthread.php?t=51738 and http://forum.hibernate.org/viewtopic.php?t=985226 The MarkerObject should be serializable. -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://opensource.atlassian.com/projects/hibernate/secure/Administrators.... - For more information on JIRA, see: http://www.atlassian.com/software/jira

12 years, 11 months

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[Hibernate-JIRA] Created: (HHH-2774) Call ResultTransformer.transformList() even if the list argument is an empty list

by Christian Bauer (JIRA)

Call ResultTransformer.transformList() even if the list argument is an empty list --------------------------------------------------------------------------------- Key: HHH-2774 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-2774 Project: Hibernate3 Issue Type: Improvement Components: core Reporter: Christian Bauer Priority: Trivial I have a case where a ResultTransformer is doing all the work in transformTuple() and always returns null from that method. The transformed target state is held internally in the ResultTransformer instance (I basically turn many tuples into one). Now I can't get this state out of the ResultTransformer because transformList() is not called after transformTuple(). It would be better if transformList() is called even if the list of tuples returned by transformTuple() is empty. -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://opensource.atlassian.com/projects/hibernate/secure/Administrators.... - For more information on JIRA, see: http://www.atlassian.com/software/jira

12 years, 11 months

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[Hibernate-JIRA] Created: (EJB-276) Support for CLOB not working for DB2 when table per concrete class is being used

by breako (JIRA)

Support for CLOB not working for DB2 when table per concrete class is being used -------------------------------------------------------------------------------- Key: EJB-276 URL: http://opensource.atlassian.com/projects/hibernate/browse/EJB-276 Project: Hibernate Entity Manager Type: Bug Versions: 3.2.1 Reporter: breako Hi, This came up in the forums: http://forum.hibernate.org/viewtopic.php?p=2344008#2344008 Sample code: Two Pojos @Entity public class Person { private int i; @Identity public int getI() { return i; } public void setI(int i){ this.i = i; } } @Entity public class Employee extends Person{ @Basic(fetch=FetchType.LAZY) @Lob public String getClobAttr() { return clobAttr; } public void setClobAttr(String clobAttr) { this.clobAttr = clobAttr; } } Simple test: public static void main (String args[]) { Query queryImpl = em.createQuery(" from Person"); List list = queryImpl.getResultList(); } This will generate SQL select person0_.clobAttr as clobAttr1 from (select nullif(0,0) as clobAttr from TPerson union all select clobAttr from TEmployee) person0_ which chucks the exception: DB2 SQL error: SQLCODE: -415, SQLSTATE: 42825, SQLERRMC: null I think the SQL hibernate should generate should be: select person0_.clobAttr as clobAttr1 from (select cast(null as CLOB) as clobAttr from TPerson union all select clobAttr from TEmployee) person0_ -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://opensource.atlassian.com/projects/hibernate/secure/Administrators.... - For more information on JIRA, see: http://www.atlassian.com/software/jira

13 years

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[Hibernate-JIRA] Created: (HHH-3248) org.hibernate.cache.EhCache.toMap() throws NullPointerException

by Kenny MacLeod (JIRA)

org.hibernate.cache.EhCache.toMap() throws NullPointerException --------------------------------------------------------------- Key: HHH-3248 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-3248 Project: Hibernate3 Issue Type: Bug Components: caching (L2) Affects Versions: 3.2.6 Reporter: Kenny MacLeod The toMap() method of org.hibernate.cache.EhCache is not null-safe. The expression cache.get( key ).getObjectValue() Will throw a NPE, since get(key) may return a null in cases where the key exists in the cache, but the value does not, e.g. if it has expired. This should either check for the null, or the list of keys should be obtained using getKeysWithExpiredCheck(), rather than just getKeys(). -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://opensource.atlassian.com/projects/hibernate/secure/Administrators.... - For more information on JIRA, see: http://www.atlassian.com/software/jira

13 years

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[Hibernate-JIRA] Created: (HHH-3318) Allow omitting varchar limit by default in PostgreSQL

by Luke Maurer (JIRA)

Allow omitting varchar limit by default in PostgreSQL ----------------------------------------------------- Key: HHH-3318 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-3318 Project: Hibernate3 Issue Type: New Feature Components: core Environment: Hibernate 3.2.6, PostgreSQL 8.3.1 Reporter: Luke Maurer Priority: Minor Essentially, what I'd like is for a String without a given maximum length be mapped as a varchar or text rather than a varchar(255) as is now the case. The maximum doesn't do anything to improve performance or storage efficiency in PostgreSQL, so varchar(255) merely imposes an arbitrary constraint. It would be more idiomatic to use varchar where no limit is given, leaving varchar(n) for cases where the length is limited as a business rule rather than an implementation detail. (Naturally, one can always use @Lob where it's actually *important* that the column be a varchar or text. So this is definitely minor.) -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://opensource.atlassian.com/projects/hibernate/secure/Administrators.... - For more information on JIRA, see: http://www.atlassian.com/software/jira

13 years

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[Hibernate-JIRA] Created: (HHH-3244) Implement support NVARCHAR type

by Sergey Derugo (JIRA)

Implement support NVARCHAR type -------------------------------- Key: HHH-3244 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-3244 Project: Hibernate3 Issue Type: New Feature Components: core Environment: al Reporter: Sergey Derugo JDBC 4.0 allows supports NVARCHAR type, but Hibernate doesn't handle it. Please implement support for NVarchar -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://opensource.atlassian.com/projects/hibernate/secure/Administrators.... - For more information on JIRA, see: http://www.atlassian.com/software/jira

13 years

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[Hibernate-JIRA] Created: (HHH-2955) Unnecessary version updates in two cases.

by Sławomir Wojtasiak (JIRA)

Unnecessary version updates in two cases. ----------------------------------------- Key: HHH-2955 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-2955 Project: Hibernate3 Issue Type: Bug Components: core Affects Versions: 3.2.5 Environment: JDK 5.0 Reporter: Sławomir Wojtasiak Attachments: HibernateTest.zip I found two situations where hibernate generates unnecessary version updates. Let's illustrate it with a simple example: Session session = SessionFactory.getSession(); Transaction transaction = session.getTransaction(); transaction.begin(); Article a = new Article(); a.setName( "atricle" ); ********************************************* *** Quantity is the owner of the relation *** ********************************************* Quantity q = new Quantity(); q.setName( "quantity" ); q.setArticle( a ); a.getQuantities().add( q ); session.persist( a ); session.flush(); ***** Hibernate generates following SQLs ***** Hibernate: select nextval ('hibernate_sequence') Hibernate: select nextval ('hibernate_sequence') Hibernate: insert into Article (name, version, id) values (?, ?, ?) Hibernate: insert into Quantity (article_id, name, version, id) values (?, ?, ?, ?) ********************************************** a.getQuantities().clear(); session.flush(); *** Hibernate generates following SQLs *** Hibernate: update Article set name=?, version=? where id=? and version=? This update of version field is performed because collection of quantities is marked as dirty, but Article entity is not relation owner so nothing change in database after this clear. Should it works like this? It looks like a bug because database remain unchanged so version changing is unnecessary in my opinion. ****************************************** session.clear(); **** SECOND PROBLEM *** Now I generate true copy of persisted objects. Notice that I use HashSet instead of PersistSet which was set during persist operation. This operation is similar to merging objects prepared by SOAP, during communication with remote client for example. *********************** Article a1 = new Article(); a1.setId( a.getId() ); a1.setName( a.getName() ); a1.setVersion( a.getVersion() ); Quantity q1 = new Quantity(); q1.setArticle( a1 ); q1.setName( q.getName() ); q1.setVersion( q.getVersion() ); q1.setId( q.getId() ); a1.getQuantities().add( q1 ); a1 = (Article)session.merge( a1 ); session.flush(); ***** This operation generates following SQLs ***** Hibernate: select article0_.id as id0_1_, article0_.name as name0_1_, article0_.version as version0_1_, quantities1_.article_id as article4_3_, quantities1_.id as id3_, quantities1_.id as id1_0_, quantities1_.article_id as article4_1_0_, quantities1_.name as name1_0_, quantities1_.version as version1_0_ from Article article0_ left outer join Quantity quantities1_ on article0_.id=quantities1_.article_id where article0_.id=? Hibernate: update Article set name=?, version=? where id=? and version=? It looks like problem is located in replaceElements() method of CollectgionType class (or somewhere near it). Maybe I'm wrong but this collection was checked for changes during merge operation (See this select above.) so why it remains dirty if it contains the same data as database?. I checked this issue on other JPA implementations (OpenJPA for example) and version is not incremented after similar merge operation. ***************************************************** transaction.rollback(); -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://opensource.atlassian.com/projects/hibernate/secure/Administrators.... - For more information on JIRA, see: http://www.atlassian.com/software/jira

13 years

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[Hibernate-JIRA] Created: (EJB-318) PostUpdate callback not called after update on a collection / association (@OneToMany for example)

by Aghnar von Salza (JIRA)

PostUpdate callback not called after update on a collection / association (@OneToMany for example) -------------------------------------------------------------------------------------------------- Key: EJB-318 URL: http://opensource.atlassian.com/projects/hibernate/browse/EJB-318 Project: Hibernate Entity Manager Issue Type: Bug Components: EntityManager Environment: Hibernate core3.2.5, entityManager 3.3.1, annotation 3.3.0, oracle 9i Reporter: Aghnar von Salza Environment is Weblogic 10 (J2EE 5), with Hibernate used as JPA provider There is no PostUpdate callback on an entity when one of its collections of other Entities (for example annoted with @OneToMany) is updated (i mean when one entity element is added or removed). JPA specification says that a postUpate must be called after the update of at least one data of an entity. I think we have to consider that a collection of other entities can be considered as data. -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://opensource.atlassian.com/projects/hibernate/secure/Administrators.... - For more information on JIRA, see: http://www.atlassian.com/software/jira

13 years

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hibernate-issues August 2008