[Hibernate-JIRA] Created: (HHH-2666) subselect fetching ignores max results
by James Roper (JIRA)
subselect fetching ignores max results
--------------------------------------
Key: HHH-2666
URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-2666
Project: Hibernate3
Issue Type: Improvement
Components: query-hql, query-sql
Affects Versions: 3.2.1
Environment: Hibernate 3.2.1
HSQLDB 8.0
Reporter: James Roper
Priority: Minor
When maxResults is set for a query, the hibernate subselect fetching strategy ignores it. For example, I have a class entry, that has a list of comments, which are configured to use the subselect fetching strategy. You can see that in the original query, only the top ? results are fetched:
select
top ? entry0_.id as id0_,
entry0_.title as title0_,
entry0_.entry as entry0_,
entry0_.time as time0_,
entry0_.category_id as category5_0_
from
Entry entry0_
order by
entry0_.time desc
But then when it does the sub select query to lazily load the comments, this is the query it runs:
select
comments0_.entry_id as entry5_1_,
comments0_.id as id1_,
comments0_.id as id1_0_,
comments0_.time as time1_0_,
comments0_.comment as comment1_0_,
comments0_.author as author1_0_
from
Comment comments0_
where
comments0_.entry_id in (
select
entry0_.id
from
Entry entry0_
)
order by
comments0_.time desc
So, it loads every single comment in the database, even though only the comments for the top ? entries are needed. Of course, if there was no order by clause on the first query, the sub select may not return the same results, so it should probably only do this when there is an order by clause in the first query, and it should make sure it includes the order by clause in the sub select.
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12 years, 6 months
[Hibernate-JIRA] Created: (ANN-609) Need a way to specify "unsaved-value" strategy using annotations
by Suji Suresh (JIRA)
Need a way to specify "unsaved-value" strategy using annotations
----------------------------------------------------------------
Key: ANN-609
URL: http://opensource.atlassian.com/projects/hibernate/browse/ANN-609
Project: Hibernate Annotations
Issue Type: Bug
Environment: Hibernate 3.2.2, Hibernate-annotations 3.2.1
Reporter: Suji Suresh
Hibernate has two ways of specifying a value for primary key:
1. Assign a value before handing it over to Hibernate
2. Have Hibernate generate the value before persisting
In my project I have objects of both of the above specified types. In other words I assign value for the primary key for some the objects (lets call these objects "assigned") and for others I have Hibernate generate the value before persisting (lets call these objects "generated"). Since Hibernate annotations does not support "unsaved-value", I do not have a way of specifying "unsaved-value" strategy. While my "generated" objects work perfectly with Hibernate's default "unsaved-value" strategy, I see wrong (but expected) behaviour when I try to persist an "assigned" object that is already present in the database in that, I get StaleStateException instead of DataIntegrityViolationException
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12 years, 6 months
[Hibernate-JIRA] Created: (HHH-2085) org.hibernate.event.def.DefaultLoadEventListener logs exception at info level
by Don Smith (JIRA)
org.hibernate.event.def.DefaultLoadEventListener logs exception at info level
-----------------------------------------------------------------------------
Key: HHH-2085
URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-2085
Project: Hibernate3
Type: Bug
Components: core
Versions: 3.2.0.cr2
Environment: Hibernate 3.2.0.cr2, MySQL 4.0.18
Reporter: Don Smith
Priority: Minor
Prior to schema generation, accessing a persistent object throws an exception, as expected. The org.hibernate.event.def.DefaultLoadEventListener logs the exception at the info level, which just adds noise to the application console, and prevents application exception handling (in my case it's valid if the table doesn't exist, so I just want to catch the exception and continue). This log statement should be removed, or moved to a debug or trace level, so it won't show up in normal execution.
Code, from line 94 of org.hibernate.event.def.DefaultLoadEventListener:
catch(HibernateException e) {
log.info("Error performing load command", e);
throw e;
}
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12 years, 8 months
[Hibernate-JIRA] Created: (HHH-2548) when "order by" a composit object, which may be null, the result list returns only when the composit objcts not null
by Yu Deng (JIRA)
when "order by" a composit object, which may be null, the result list returns only when the composit objcts not null
--------------------------------------------------------------------------------------------------------------------
Key: HHH-2548
URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-2548
Project: Hibernate3
Issue Type: Bug
Affects Versions: 3.2.3
Environment: tomcat 5.5, eclipse3.2, jre1.5, postgreSQL8.1, hibernate3 and hibernate3.2
Reporter: Yu Deng
Priority: Critical
<hibernate-mapping package="com.grapevinecs.ams.domain.perbranch.inv">
<class name="InvItem">
<id name="id" column="id">
<generator class="hilo"/>
</id>
...
<many-to-one name="transferredDetails"/> <!-- FK: Points to corresponding entry for transferred inventory items -->
....
</class>
(another mapping file)
</hibernate-mapping>>
<hibernate-mapping package="com.grapevinecs.ams.domain.perbranch.inv">
<class name="InvTransferDetails" >
<id name="id" column="id">
<generator class="hilo"/>
</id>
<property name="returnedToICBC" type="com.grapevinecs.ams.dao.BooleanInteger" not-null="true"/>
...
</class>
</hibernate-mapping>
Probelm:
1) The result returns 3000 records ---- select count(*) from InvItem c where upper(c.invType) LIKE '%D%' and c.invSeries.closed = '0' and c.branch =60551 order by c.transferredDetails.returnedToICBC asc, c.stamp asc,c.invNmbr asc
2) result List return size 0 by this query --- from InvItem c where upper(c.invType) LIKE '%D%' and c.invSeries.closed = '0' and c.branch =60551 order by c.transferredDetails.returnedToICBC asc, c.stamp asc,c.invNmbr asc
1) is correct but 2) is not correct. only when transferredDetails in InvItem not null be returned. in case 2), I have no transferredDetails not null.
after I excuted the query 2), even I remove "c.transferredDetails.returnedToICBC asc", the result is still return nothing.
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12 years, 9 months
[Hibernate-JIRA] Created: (HHH-2052) org.hibernate.pretty.MessageHelper.collectionInfoString tries to cast wrong object to String, causes ClassCastException
by Tree 'Huggy Bear' Hugger (JIRA)
org.hibernate.pretty.MessageHelper.collectionInfoString tries to cast wrong object to String, causes ClassCastException
-----------------------------------------------------------------------------------------------------------------------
Key: HHH-2052
URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-2052
Project: Hibernate3
Type: Bug
Reporter: Tree 'Huggy Bear' Hugger
Attachments: bugtest.zip
Debug level logging attempted by MessageHelper falls over when constructing a loggable string for a mapped collection on the main entity.
Following the code in the stacktrace, I can see that MessageHelper expects the parent key for the collection relationship to be the primary key, but it is mapped to another field of a different type via a property-ref. Hence the ClassCastException below.
The work around is to set logging to INFO or higher.
I have also attached a pared-down zip with the maven 2 project containing the mappings and the unit test which fails.
The following JIRA issue may be the same thing:
http://opensource.atlassian.com/projects/hibernate/browse/ANN-298
The following messages on the Hib forum demonstrate other interest in this issue:
http://forum.hibernate.org/viewtopic.php?t=949913
http://forum.hibernate.org/viewtopic.php?t=956778
http://forum.hibernate.org/viewtopic.php?t=962471
java.lang.ClassCastException: com.nomadsoft.cortex.domain.country.basic.BasicCountry
at org.hibernate.type.StringType.toString(StringType.java:44)
at org.hibernate.type.NullableType.toLoggableString(NullableType.java:168)
at org.hibernate.pretty.MessageHelper.collectionInfoString(MessageHelper.java:284)
at org.hibernate.loader.Loader.readCollectionElement(Loader.java:972)
at org.hibernate.loader.Loader.readCollectionElements(Loader.java:635)
at org.hibernate.loader.Loader.getRowFromResultSet(Loader.java:580)
at org.hibernate.loader.Loader.doQuery(Loader.java:689)
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:224)
at org.hibernate.loader.Loader.loadEntity(Loader.java:1785)
at org.hibernate.loader.entity.AbstractEntityLoader.load(AbstractEntityLoader.java:47)
at org.hibernate.loader.entity.AbstractEntityLoader.load(AbstractEntityLoader.java:41)
at org.hibernate.persister.entity.AbstractEntityPersister.load(AbstractEntityPersister.java:2730)
at org.hibernate.event.def.DefaultLoadEventListener.loadFromDatasource(DefaultLoadEventListener.java:365)
at org.hibernate.event.def.DefaultLoadEventListener.doLoad(DefaultLoadEventListener.java:346)
at org.hibernate.event.def.DefaultLoadEventListener.load(DefaultLoadEventListener.java:123)
at org.hibernate.event.def.DefaultLoadEventListener.proxyOrLoad(DefaultLoadEventListener.java:177)
at org.hibernate.event.def.DefaultLoadEventListener.onLoad(DefaultLoadEventListener.java:87)
at org.hibernate.impl.SessionImpl.fireLoad(SessionImpl.java:862)
at org.hibernate.impl.SessionImpl.get(SessionImpl.java:799)
at org.hibernate.impl.SessionImpl.get(SessionImpl.java:792)
at org.springframework.orm.hibernate3.HibernateTemplate$1.doInHibernate(HibernateTemplate.java:452)
at org.springframework.orm.hibernate3.HibernateTemplate.execute(HibernateTemplate.java:366)
at org.springframework.orm.hibernate3.HibernateTemplate.get(HibernateTemplate.java:446)
at org.springframework.orm.hibernate3.HibernateTemplate.get(HibernateTemplate.java:440)
at com.nomadsoft.cortex.infrastructure.hibernate.HibernateCountryRepository.getById(HibernateCountryRepository.java:26)
at com.nomadsoft.cortex.domain.country.basic.BasicCountryService.getCountry(BasicCountryService.java:34)
etc etc
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12 years, 11 months