[JBoss-user] [Persistence, JBoss/CMP, Hibernate, Database] - Re: Accessing the dicriminator column
Yes, I actually figured out this rather simple (and obvious!) workaround just after I posted - thanks for the info. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3950305#3950305 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=3950305 ___ JBoss-user mailing list JBoss-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/jboss-user
[JBoss-user] [Persistence, JBoss/CMP, Hibernate, Database] - Re: Accessing the dicriminator column
I'm also looking for this functionality - anyone??? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3950194#3950194 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=3950194 ___ JBoss-user mailing list JBoss-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/jboss-user
[JBoss-user] [EJB 3.0] - Re: Trouble persisting enum in SQL Server
Never mind - I found that I have to change the SelectMode on the JDBC driver to "cursor". For those who care, I found the answer here: http://support.microsoft.com/default.aspx?scid=kb%3Ben-us%3B313181 It's funny how you search all over the web for hours trying to figure it out, finally decide to post a question, and then find the answer 10 minutes later! View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3919184#3919184 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=3919184 --- This SF.net email is sponsored by: Splunk Inc. Do you grep through log files for problems? Stop! Download the new AJAX search engine that makes searching your log files as easy as surfing the web. DOWNLOAD SPLUNK! http://sel.as-us.falkag.net/sel?cmd=lnk&kid=103432&bid=230486&dat=121642 ___ JBoss-user mailing list JBoss-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/jboss-user
[JBoss-user] [EJB 3.0] - Trouble persisting enum in SQL Server
Hello: I'm getting a strange message when I try to persist an enum value in an entity - it seems my JDBC connection cannot determine the type of the column where the enum will be saved. This is the message I get in the debug log: DEBUG [org.hibernate.type.EnumType] Unable to guess the column type for enum through conn.getMetadata(): [Microsoft][SQLServer 2000 Driver for JDBC]Can't start a cloned connection while in manual transaction mode. I'm not sure how to resolve this - Anyone else have this problem? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3919167#3919167 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=3919167 --- This SF.net email is sponsored by: Splunk Inc. Do you grep through log files for problems? Stop! Download the new AJAX search engine that makes searching your log files as easy as surfing the web. DOWNLOAD SPLUNK! http://sel.as-us.falkag.net/sel?cmd=lnk&kid=103432&bid=230486&dat=121642 ___ JBoss-user mailing list JBoss-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/jboss-user
[JBoss-user] [EJB 3.0] - Re: Newly created identity not propagated to dependent colum
Thanks for the reply. I left out (access=AccessType.FIELD) in the @Entity annotation - I do use that. I'll try and explain further - it seems that JBoss/Hibernate are generating the correct INSERT statements for the Entities, but it is not propagating the newly created Identity value for the WidgetHolder row to the Widget rows. Using the trace, I see it is properly formatting the inserts, and even adding a "select scope_identity()" to the end of the insert statement to have SQL Server return the newly created ID - however, Hibernate is not using that value in the subsequent INSERT statement for the Widgets. Very frustrating. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3918925#3918925 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=3918925 --- This SF.net email is sponsored by: Splunk Inc. Do you grep through log files for problems? Stop! Download the new AJAX search engine that makes searching your log files as easy as surfing the web. DOWNLOAD SPLUNK! http://sel.as-us.falkag.net/sel?cmd=lnk&kid=103432&bid=230486&dat=121642 ___ JBoss-user mailing list JBoss-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/jboss-user
[JBoss-user] [EJB 3.0] - Newly created identity not propagated to dependent columns i
Hello:
It seems like a simple problem, but I can't get it to work. I have two
entites, related by a OneToMany relationship:
| @Entity
| public class WidgetHolder {
|
|@Id (generate=GeneratorType.IDENTITY)
|private long id;
|
|
|@OneToMany(mappedBy="myWidgetHolder", cascade=CascadeType.ALL)
|private List myWidgets = new ArrayList();
|
|
|public void addWidget(Widget aWidget) {
| myWidgets.add(aWidget);
|}
| }
|
|
| @Entity
| public class Widget {
|
|...
|
|@ManyToOne(optional=false)
|@JoinColumn(name="WIDGET_HOLDER_ID", nullable=false, updatable=false)
|private WidgetHolder myWidgetHolder;
|
|
|public Widget(WidgetHolder aHolder) {
| myWidgetHolder = aHolder;
|}
|
|
|...
|
| }
|
When I do the following in a SLSB:
| public class StatelessBean {
|
|@PersistenceContext (unitName="widgetContext")
|protected EntityManager em;
|
|public void createWidgetHolder() {
|
| WidgetHolder widgetHolder = new WidgetHolder();
|
| List widgets = new ArrayList();
| widgetHolder.addWidget(new Widget(widgetHolder))
| widgetHolder.addWidget(new Widget(widgetHolder));
|
| ...
|
| em.persist(widgetHolder);
|}
| }
|
I get the following error:
java.lang.RuntimeException: org.jboss.tm.JBossRollbackException: Unable to
commit, tx=TransactionImpl:XidImpl[FormatId=257, GlobalId=VELOCITY1/39,
BranchQual=, localId=39] status=STATUS_NO_TRANSACTION; - nested throwable:
(org.hibernate.PropertyValueException: not-null property references a null or
transient value: Widget.myWidgetHolder)
When I take out the "optional=false" and "nullable=false" on the ManyToOne
relationship, the INSERT statement for Widget tries to insert a NULL in the
WIDGET_HOLDER_ID column. (I use MSSQL 2000 as the datastore).
Is there some sort of annotation I need to explicitly tell Hibernate to get the
newly-created ID from WidgetStore and use it in the INSERT of Widget? Any help
would be appreciated - thanks!!
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[JBoss-user] [EJB 3.0] - Re: Deleting an entity from another entity?
Okay - more searching led to a 'workaround' using Hibernate's native CascadeTyp.DELETE_ORPHAN setting. I'm not quite sure why a facility like this or like TopLink's 'Private Owned' flag is left out of the EJB spec - it seems like a fairly common mechanism. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3912444#3912444 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=3912444 --- This SF.net email is sponsored by: Splunk Inc. Do you grep through log files for problems? Stop! Download the new AJAX search engine that makes searching your log files as easy as surfing the web. DOWNLOAD SPLUNK! http://ads.osdn.com/?ad_id=7637&alloc_id=16865&op=click ___ JBoss-user mailing list JBoss-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/jboss-user
[JBoss-user] [EJB 3.0] - Re: Deleting an entity from another entity?
Thanks for the reply. Collection is already annotated with Cascade.REMOVE -
merge() doesn't work in this instance. I think I need a way to get to the
EntityManager inside my Entity Bean. For example:
| @Entity
| public class Container {
| private List items;
|
| @OneToMany(mappedBy="security", cascade=CascadeType.ALL)
| @MapKey (name="key")
| public MapgetProperties();
|
| ...
|
| public void removeProperty(String key) {
| if (getProperties().containsKey(key)) {
| Object obj = getMyProperties().remove(key);
| //
| // This is where I think I could use the EntityManager
| // to delete from database:
| //
| em.remove(obj);
| }
| }
| }
|
What is the best way to inject the EntityManager into an Entity Bean? Or is
there is another way to accomplish this without using the EntityManager?
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[JBoss-user] [EJB 3.0] - Deleting an entity from another entity?
This might be a stupid question, but I can't seem to find the answer to it. I'm fairly new to JBoss/Hibernate/EJB3.0, but I have a good deal of experience using TopLink. I have a collection of entity objects contained in another entity object. When I remove an entity from the collection (via a method on the owning entity) I would like to remove it from the datastore - how do I go about it? Do I need to get a handle to the EntityManager and call remove()? If so, what is the best way to get a handle to the EntityManager inside an Entity Bean? TopLink has a setting called 'Private Owned', which would automatically delete an object if you removed it from the owning entity's collection. I see that Hibernate does this for simple collections (Strings and the like), but not for Entity collections. Thanks for any help. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3912209#3912209 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=3912209 --- This SF.net email is sponsored by: Splunk Inc. Do you grep through log files for problems? Stop! Download the new AJAX search engine that makes searching your log files as easy as surfing the web. DOWNLOAD SPLUNK! http://ads.osdn.com/?ad_id=7637&alloc_id=16865&op=click ___ JBoss-user mailing list JBoss-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/jboss-user
[JBoss-user] [EJB 3.0] - Re: GeneratorType.IDENTITY still causes attempt to insert ex
Never mind - I set my hibernate dialect to SQLServerDialect, and it now works. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3912171#3912171 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=3912171 --- This SF.net email is sponsored by: Splunk Inc. Do you grep through log files for problems? Stop! Download the new AJAX search engine that makes searching your log files as easy as surfing the web. DOWNLOAD SPLUNK! http://ads.osdn.com/?ad_id=7637&alloc_id=16865&op=click ___ JBoss-user mailing list JBoss-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/jboss-user
[JBoss-user] [EJB 3.0] - GeneratorType.IDENTITY still causes attempt to insert explic
Hello: I'm using SQL Server 2000 with JBoss EJB 3.0. For my identity column on a particular entity, I'm using GeneratorType.IDENTITY, which "should" let the DB insert a value into the identity column. However The generated SQL is trying to insert an explicit value (null) in the identity column, which (understandably) causes a SQLServer error. Is this a bug, or am I not using it properly? Thanks for any help. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3912157#3912157 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=3912157 --- This SF.net email is sponsored by: Splunk Inc. Do you grep through log files for problems? Stop! Download the new AJAX search engine that makes searching your log files as easy as surfing the web. DOWNLOAD SPLUNK! http://ads.osdn.com/?ad_id=7637&alloc_id=16865&op=click ___ JBoss-user mailing list JBoss-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/jboss-user
