Re: delete relation in indirection-table
Hi Olivier, Hi Edson, using MangeableVector solved the problem! thanks a lot! Klaus - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: delete relation in indirection-table
Hi all, is this behaviour documented? regards, Armin Klaus Ripplinger wrote: Hi Olivier, Hi Edson, using MangeableVector solved the problem! thanks a lot! Klaus - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
un outil interessant pour la supervission des statment JDBC
suite à une discution dans OJB forum il y un autil tres interessant Open Source pour la suppervission au niveau du JDBC interessant de voir ça si en peut l'integer chez nous http://www.irongrid.com/catalog/product_info.php?products_id=32 Charles Anthony wrote: Hi, I'm not sure if you are aware, but there is already a tool to do this, based on the p6spy jdbc driver. It's available under the Apache license too. I believe the only thing it doesn't do is the analysis of the data to suggest indices. http://www.irongrid.com/catalog/product_info.php?products_id=32 I've only glanced at the tool, not used it. Even if that tool is not what you want, it's probably better to extend the p6spy driver to do what you want - as it would be applicable across all environments that use jdbc Cheers, Charles. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Sent: 03 March 2004 08:32 To: [EMAIL PROTECTED] Subject: Logging SQL for automatic index generation or performance Analysation ? Hi, I would like to know where the best place would be to hook into ojb a class which logs all sql statements sent to the DB. My idea is to analyze the from and where clause and log into a database table the actual statements used in a live system. I then would like to write a tool which analyzes this table and suggests the best indices to create on the database. To make sure I really catch all statements I would like to directly hook into ojb. Also, this could then easily be re-used. We thought about a trace but the amount of data just seems to big. Any ideas / suggestions ? Thanks, Stefan Schlösser -- --- I N T E R M E D I A T E GmbH Co. KG eSolutions Integration Durmersheimer Straße 55 t +49 (0)721.98644-50 76185 Karlsruhe f +49 (0)721.98644-99 http://www.intermediate.de P.S. Als Beratungs- und Systemhaus optimiert Intermediate die Geschäftsprozesse mittelständischer Unternehmen in Vertrieb, Marketing und Kundenservice. Tätigkeitsschwerpunkte sind Angebots- und Produkt-Konfiguration sowie Enterprise Content-Management-Systeme. Unsere besondere Stärke liegt in der Integration bestehender Systeme, insbesondere von ERP-Systemen wie SAP R/3, BRAIN AS, MAS90 etc. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] ___ HPD Software Ltd. - Helping Business Finance Business Email terms and conditions: www.hpdsoftware.com/disclaimer - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] -- *Reda BENZAIR** *Software Analyst *** *Phone: +33 (0)1 4996 6324 Fax: +33 (0)1 4996 6405 Mobile: +33 (0)6 6240 6192 [EMAIL PROTECTED] mailto:[EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Sorry error to forward message !
Reda Benzair wrote: suite à une discution dans OJB forum il y un autil tres interessant Open Source pour la suppervission au niveau du JDBC interessant de voir ça si en peut l'integer chez nous http://www.irongrid.com/catalog/product_info.php?products_id=32 Charles Anthony wrote: Hi, I'm not sure if you are aware, but there is already a tool to do this, based on the p6spy jdbc driver. It's available under the Apache license too. I believe the only thing it doesn't do is the analysis of the data to suggest indices. http://www.irongrid.com/catalog/product_info.php?products_id=32 I've only glanced at the tool, not used it. Even if that tool is not what you want, it's probably better to extend the p6spy driver to do what you want - as it would be applicable across all environments that use jdbc Cheers, Charles. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Sent: 03 March 2004 08:32 To: [EMAIL PROTECTED] Subject: Logging SQL for automatic index generation or performance Analysation ? Hi, I would like to know where the best place would be to hook into ojb a class which logs all sql statements sent to the DB. My idea is to analyze the from and where clause and log into a database table the actual statements used in a live system. I then would like to write a tool which analyzes this table and suggests the best indices to create on the database. To make sure I really catch all statements I would like to directly hook into ojb. Also, this could then easily be re-used. We thought about a trace but the amount of data just seems to big. Any ideas / suggestions ? Thanks, Stefan Schlösser -- --- I N T E R M E D I A T E GmbH Co. KG eSolutions Integration Durmersheimer Straße 55 t +49 (0)721.98644-50 76185 Karlsruhe f +49 (0)721.98644-99 http://www.intermediate.de P.S. Als Beratungs- und Systemhaus optimiert Intermediate die Geschäftsprozesse mittelständischer Unternehmen in Vertrieb, Marketing und Kundenservice. Tätigkeitsschwerpunkte sind Angebots- und Produkt-Konfiguration sowie Enterprise Content-Management-Systeme. Unsere besondere Stärke liegt in der Integration bestehender Systeme, insbesondere von ERP-Systemen wie SAP R/3, BRAIN AS, MAS90 etc. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] ___ HPD Software Ltd. - Helping Business Finance Business Email terms and conditions: www.hpdsoftware.com/disclaimer - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] -- *Reda BENZAIR** *Software Analyst *** *Phone: +33 (0)1 4996 6324 Fax: +33 (0)1 4996 6405 Mobile: +33 (0)6 6240 6192 [EMAIL PROTECTED] mailto:[EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: [OTM] bi-directional 1:n not working (still not working)
I am now using tandem test cases to simulate the shutdown of the system and a restart, i.e. no cached items. I run the identical fetching tests in the second test case as I do in the first (only the first case creates the test data). Everything works in the first case but after restart the second test fails AND errors. The failure is caused by the WebApp not being materialized into its parent, the error is caused in the teardown() were I try and clean up the test data (see sys.out.txt for more details). I wrote the test cases using straight OTM, using OTMExamples as a guide; triple check that it wasn't something my abstraction layer was doing incorrectly. Regards, ** | Scott T Weaver | | [EMAIL PROTECTED]| | Apache Jetspeed Portal Project | | Apache Pluto Portlet Container | ** -Original Message- From: Coup, Robert Muir [mailto:[EMAIL PROTECTED] Sent: Wednesday, March 03, 2004 6:02 PM To: OJB Users List Subject: RE: [OTM] bi-directional 1:n not working Any chance you could post a summary of what you learnt? Thanks, Rob :) -Original Message- From: Weaver, Scott [mailto:[EMAIL PROTECTED] Sent: Thursday, 4 March 2004 11:48 a.m. To: 'OJB Users List' Subject: RE: [OTM] bi-directional 1:n not working Hi Oleg, I had a long IM conversation with Matt Baird today and he set me straight on how to use OTM and otm-dependent. However, I am still getting the NullPointerExceptions when invalidating or using the empty cache impl (see my other posts). Regards, ** | Scott T Weaver | | [EMAIL PROTECTED]| | Apache Jetspeed Portal Project | | Apache Pluto Portlet Container | ** -Original Message- From: Oleg Nitz [mailto:[EMAIL PROTECTED] Sent: Wednesday, March 03, 2004 6:58 PM To: OJB Users List Subject: Re: [OTM] bi-directional 1:n not working On Wednesday 03 March 2004 16:50, Weaver, Scott wrote: Removing these appears to have fixed this: auto-delete=true auto-update=true auto-retrieve=true I thought OTM could co-exists with these settings? I guess I was wrong. auto-retrieve=true is okay AFAIK auto-update=true and auto-delete=true are okay, unless you set otm-dependent=true. When you add otm-dependent=true don't forget to remove auto-update=true and auto-delete=true. Anyway I don't understand how auto-update=true can affect setting object references to parents. Regards, Oleg - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] java.lang.NullPointerException at org.apache.ojb.broker.accesslayer.CollectionPrefetcher.associateBatch ed(CollectionPrefetcher.java:190) at org.apache.ojb.broker.accesslayer.BasePrefetcher.prefetchRelationship (BasePrefetcher.java:150) at org.apache.ojb.broker.core.QueryReferenceBroker.performRetrievalTasks (QueryReferenceBroker.java:316) at org.apache.ojb.broker.core.QueryReferenceBroker.getCollectionByQuery( QueryReferenceBroker.java:185) at org.apache.ojb.broker.core.QueryReferenceBroker.getCollectionByQuery( QueryReferenceBroker.java:242) at org.apache.ojb.broker.core.QueryReferenceBroker.getCollectionByQuery( QueryReferenceBroker.java:262) at org.apache.ojb.broker.core.PersistenceBrokerImpl.getCollectionByQuery (PersistenceBrokerImpl.java:1093) at org.apache.ojb.broker.core.DelegatingPersistenceBroker.getCollectionB yQuery(DelegatingPersistenceBroker.java:322) at org.apache.ojb.broker.core.DelegatingPersistenceBroker.getCollectionB yQuery(DelegatingPersistenceBroker.java:322) at org.apache.ojb.otm.core.BaseConnection.getCollectionByQuery(BaseConne ction.java:277) at org.apache.ojb.otm.core.BaseConnection.getCollectionByQuery(BaseConne ction.java:292) at org.apache.jetspeed.components.portletregistry.TestRegistryDirectOTMP art2.tearDown(TestRegistryDirectOTMPart2.java:146) at junit.framework.TestCase.runBare(TestCase.java:130) at junit.framework.TestResult$1.protect(TestResult.java:106) at junit.framework.TestResult.runProtected(TestResult.java:124) at junit.framework.TestResult.run(TestResult.java:109) at junit.framework.TestCase.run(TestCase.java:118) at junit.framework.TestSuite.runTest(TestSuite.java:208) at
RE: [OTM] bi-directional 1:n not working (still not working)
Bad day for attachments. This is correct second test case, ignore TestRegistryDirectPart2. Regards, ** | Scott T Weaver | | [EMAIL PROTECTED]| | Apache Jetspeed Portal Project | | Apache Pluto Portlet Container | ** -Original Message- From: Weaver, Scott [mailto:[EMAIL PROTECTED] Sent: Thursday, March 04, 2004 10:55 AM To: 'OJB Users List' Subject: RE: [OTM] bi-directional 1:n not working (still not working) Rest of the test stuff, had to append .txt to everything because the list server filters are so anal ;) Hopefully they get through. Regrads, ** | Scott T Weaver | | [EMAIL PROTECTED]| | Apache Jetspeed Portal Project | | Apache Pluto Portlet Container | ** -Original Message- From: Weaver, Scott [mailto:[EMAIL PROTECTED] Sent: Thursday, March 04, 2004 10:52 AM To: 'OJB Users List' Subject: RE: [OTM] bi-directional 1:n not working (still not working) I am now using tandem test cases to simulate the shutdown of the system and a restart, i.e. no cached items. I run the identical fetching tests in the second test case as I do in the first (only the first case creates the test data). Everything works in the first case but after restart the second test fails AND errors. The failure is caused by the WebApp not being materialized into its parent, the error is caused in the teardown() were I try and clean up the test data (see sys.out.txt for more details). I wrote the test cases using straight OTM, using OTMExamples as a guide; triple check that it wasn't something my abstraction layer was doing incorrectly. Regards, ** | Scott T Weaver | | [EMAIL PROTECTED]| | Apache Jetspeed Portal Project | | Apache Pluto Portlet Container | ** -Original Message- From: Coup, Robert Muir [mailto:[EMAIL PROTECTED] Sent: Wednesday, March 03, 2004 6:02 PM To: OJB Users List Subject: RE: [OTM] bi-directional 1:n not working Any chance you could post a summary of what you learnt? Thanks, Rob :) -Original Message- From: Weaver, Scott [mailto:[EMAIL PROTECTED] Sent: Thursday, 4 March 2004 11:48 a.m. To: 'OJB Users List' Subject: RE: [OTM] bi-directional 1:n not working Hi Oleg, I had a long IM conversation with Matt Baird today and he set me straight on how to use OTM and otm-dependent. However, I am still getting the NullPointerExceptions when invalidating or using the empty cache impl (see my other posts). Regards, ** | Scott T Weaver | | [EMAIL PROTECTED]| | Apache Jetspeed Portal Project | | Apache Pluto Portlet Container | ** -Original Message- From: Oleg Nitz [mailto:[EMAIL PROTECTED] Sent: Wednesday, March 03, 2004 6:58 PM To: OJB Users List Subject: Re: [OTM] bi-directional 1:n not working On Wednesday 03 March 2004 16:50, Weaver, Scott wrote: Removing these appears to have fixed this: auto-delete=true auto-update=true auto-retrieve=true I thought OTM could co-exists with these settings? I guess I was wrong. auto-retrieve=true is okay AFAIK auto-update=true and auto-delete=true are okay, unless you set otm-dependent=true. When you add otm-dependent=true don't forget to remove auto-update=true and auto-delete=true. Anyway I don't understand how auto-update=true can affect setting object references to parents. Regards, Oleg - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] /* * The Apache Software License, Version 1.1 * * Copyright (c) 2000-2003 The Apache Software Foundation. All rights * reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright *notice, this list of conditions and the following disclaimer. * *
Re: Re: delete relation in indirection-table
Hi all, Nope I didn't found any thing on the subject, I found this behaviour while debugging ojb ( thank to eclipse ). And then reading comment in example bundled with ojb. Same behaviour with all ( I played with ) layer ( odmg, PB ). It's should be documented AND specified that default collection class is RemovalAwareCollection ... Really happy to give ( this insignifiant ... ) help AND many many many thank for ojb, document in general is very well done. Message du 04/03/04 10:24 De : Armin Waibel [EMAIL PROTECTED] A : OJB Users List [EMAIL PROTECTED] Copie à : Objet : Re: delete relation in indirection-table Hi all, is this behaviour documented? regards, Armin Klaus Ripplinger wrote: Hi Olivier, Hi Edson, using MangeableVector solved the problem! thanks a lot! You're very welcome ! Klaus - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Re: delete relation in indirection-table
As far as I remember, this behaviour was changed since 0.96 or 0.97 - I'm not sure. Of course, a DTD comment alerting that RemovalAwareCollection is default is very welcome. And changes in DOCs, specially relative to M:N mapping, recommending to not use default value for collection-class IMHO is mandatory. Edson Richter Hi all, Nope I didn't found any thing on the subject, I found this behaviour while debugging ojb ( thank to eclipse ). And then reading comment in example bundled with ojb. Same behaviour with all ( I played with ) layer ( odmg, PB ). It's should be documented AND specified that default collection class is RemovalAwareCollection ... Really happy to give ( this insignifiant ... ) help AND many many many thank for ojb, document in general is very well done. Message du 04/03/04 10:24 De : Armin Waibel [EMAIL PROTECTED] A : OJB Users List [EMAIL PROTECTED] Copie à : Objet : Re: delete relation in indirection-table Hi all, is this behaviour documented? regards, Armin Klaus Ripplinger wrote: Hi Olivier, Hi Edson, using MangeableVector solved the problem! thanks a lot! You're very welcome ! Klaus - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: JOIN and aliases...is this a bug?
hi alessandro, according to your repository db.DBAttribute contains a field called 'nname' field-descriptor name=nname column=NAME primarykey=true jdbc-type=VARCHAR / there's no field called 'name'. so you can either change your repository or adapt your query: Criteria c = new Criteria(); c.addEqualsTo(attributes.nname, Ale); Query q = QueryFactory.newQuery(DBObject.class, c); jakob Alessandro Villamaina wrote: Hi Jackob, this is the class descriptor I currently use. Thanks for help! Alessandro class-descriptor class=db.DBObject table=DBOBJECT field-descriptor name=name column=NAME jdbc-type=VARCHAR primarykey=true / collection-descriptor name=attributes auto-delete=true auto-update=true element-class-ref = db.DBAttribute inverse-foreignkey field-ref = owner / /collection-descriptor /class-descriptor class-descriptor class=db.DBAttribute table=DBATTRIBUTE field-descriptor name=nname column=NAME primarykey=true jdbc-type=VARCHAR / field-descriptor name=vvalue column=VALUE jdbc-type=VARCHAR / field-descriptor name=owner column=OWNER jdbc-type=VARCHAR primarykey=true access=anonymous / /class-descriptor Da: Jakob Braeuchi [EMAIL PROTECTED] Data: Fri, 20 Feb 2004 21:57:23 +0100 A: OJB Users List [EMAIL PROTECTED] Oggetto: Re: JOIN and aliases...is this a bug? hi alessandro, could you please post the class-descriptors ? jakob Alessandro Villamaina wrote: Hi all, I have the following class declaration (pseudo code): class DBObject private String name private Collection attributes class DBAttribute private String name private String value when I execute a query like the following (with PB API): Criteria c = new Criteria(); c.addEqualsTo(attributes.name, Ale); Query q = QueryFactory.newQuery(DBObject.class, c); the generated SQL statement is SELECT A0.NAME FROM DBOBJECT A0 JOIN DBATTRIBUTE A1 ON A0.NAME=A1.OWNER WHERE name = 'Ale'; where OWNER is the column used by OJB to maintain references between an object and its attributes as specified in the repository_user.xml. It seems OJB forgets to use the alias A1 to qualify the attribute name in the WHERE clause; since both tables have such attribute, the query fails (using name instead of A1.name is ambiguous). Is this a bug in OJB or am I doing something wrong? Thanks, Alessandro - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Extent problem with ODMG
hi charles, steve, i do not think that my fix is related to this problem. i propose to move the definition of the relationship to the concrete classes. jakob Charles Anthony wrote: Hi, I have a hunch - quite possibly misplaced - that this may have something to do the bug I reported in the thhread entitled. Criteria.setClassPath - the saga continues Although you are using an ODMG query, when the query is parsed, it does generate a standard QueryByCriteria. QueryByCriteria was getting the wrong class descriptor when paths of 1 sement were used. This would lead to the attribute name being passed to the query, as opposed to the column name. Jakob fixed this in CVS last night. This May Be A Red Herring. Cheers, Charles. -Original Message- From: Steve Clark [mailto:[EMAIL PROTECTED] Sent: 03 March 2004 19:56 To: OJB Users List Subject: Re: Extent problem with ODMG I'm still having this problem, so I'm going to try again. Using ODMG, RC5, Oracle 9i. Summary: - Class A has a 1-to-1 relationship 'abs' to an abstract superclass S - Class S has concrete subclasses B and C - Classes B and C share a common relationship 'com' to another class D; this relationship is defined in the superclass S - Class D has a property 'p' - A, B, C, and D map to distinct tables I am trying to retrieve all A's which have a given value for 'p' in the D associated with the related B or C (whichever one it is). So: select x from A where A.abs.com.p = ? A.abs has type S, the abstract superclass; A.abs.com has type D. This means that the query needs to generate some sort of interesting join to check for both possible paths to D (via B or C), knowing that either B or C will have exactly one row satisfying the join condition(s). In pseudocode: select x from A where if A.abs instanceof B then ((B) A.abs).com.p = ? else if A.abs instanceof C then ((C) A.abs).com.p = ? Should I expect this to work? The SQL query which is being generated is not only incorrect but invalid: OJB does not rewrite 'p', and in fact does not even mention D at all. I assume this has to do with the fact that the repository doesn't record the presence of the relationship 'com' in the abstract superclass, but only in the subclasses. Queries starting from B or C and following the 'com' relationship work fine. Am I out of luck, or is there some way I can get a working query out of this? thanks for any insights, Steve Clark Technology Applications Team Natural Resources Research Center/USGS [EMAIL PROTECTED] (970)226-9291 PS: Original message below. Name mappings: A = PartnerImpl B = SubSiteImpl C = TechAssistImpl D = SiteImpl S = AccomplishmentImpl abs = accomp com = site p = habTypeCode sc I'm having a problem with extents in ODMG. OJB is generating sc incorrect (and, in fact, invalid) SQL for my OQL query. I'm sc using RC5. sc My data model consists of Sites, which have collections of sc each of two kinds of Accomplishments (SubSites and sc TechAssists). An Accomplishment has a collection of Partners. sc In the reverse direction, each Partner is associated with sc exactly one Accomplishment (either a SubSite or a TechAssist), sc and an Accomplishment knows about its parent Site. My sc repository looks like this: sc !-- - - - - - - Site - - - - - - -- sc class-descriptor sc class=gov.doi.habits.dataobjects.SiteImpl sc table=SITE_DETAIL proxy=dynamic sc field-descriptor sc name=siteKey column=SITE_KEY jdbc-type=INTEGER sc primarykey=true autoincrement=true/ sc field-descriptor sc name=habTypeCode column=HAB_TYPE_CODE sc jdbc-type=INTEGER / sc collection-descriptor sc name=subSites sc element-class-ref=gov.doi.habits.dataobjects.SubSiteImpl sc collection-class=org.apache.ojb.broker.util.collections.Manag eableArrayList sc inverse-foreignkey field-ref=siteKey / sc /collection-descriptor sc collection-descriptor sc name=techAssists sc element-class-ref=gov.doi.habits.dataobjects.TechAssistImpl sc collection-class=org.apache.ojb.broker.util.collections.Manag eableArrayList sc inverse-foreignkey field-ref=siteKey / sc /collection-descriptor sc /class-descriptor sc !-- - - - - - - Accomplishment - - - - - - -- sc class-descriptor sc class=gov.doi.habits.dataobjects.AccomplishmentImpl sc extent-class sc class-ref=gov.doi.habits.dataobjects.SubSiteImpl / sc extent-class sc class-ref=gov.doi.habits.dataobjects.AssistImpl / sc /class-descriptor sc !-- - - - - - - SubSite - - - - - - -- sc class-descriptor sc class=gov.doi.habits.dataobjects.SubSiteImpl sc table=SUB_SITE_DETAIL proxy=dynamic sc field-descriptor sc name=accompKey column=ACCOMP_KEY jdbc-type=INTEGER sc primarykey=true autoincrement=true sc sequence-name=SEQ_ACCOMP_DETAIL
Referencing tables not in return object
I am not sure how to do something and have tried a couple of approaches without success. I could use some help. My problem comes down to the idea that I want to return a mapped object but based on a complex query that gets messed up due to the way OJB uses foreign keys. Is there a way to do a query on tables not referenced in the object you seek to return? I want to return rstep1 objects (A0), but I need to create a complex query in other tables to get rstep1 objects. What I would to have happened is something like: SELECT A0.rTitle, A0.brief FROM rstep1 A0, si A1 WHERE ((A1.targetmsid = 20001025 ) AND A1.targetmid = 20001 ) AND interestmsid = A0.msid What I do get through OJB's use of the foreign key is: SELECT A0.rTitle, A0.brief FROM rstep1 A0 INNER JOIN si A1 ON A0.msid=A1.targetmsid WHERE ((A1.targetmsid = 20001025 ) AND A1.targetmid = 20001 ) AND A1.interestmsid = A0.msid Is there a way to create a query that returns a mapped object where tables referened are not held within the object? I only want to return values rstep1, but have to reference another table only within the query. The query gets messed up because of the foreign key used to generate the query. I have tried below without using a reference to the si table, but si becomes ambigous. crit.addSql(si.targetmsid = + jMsid); crit.addSql(si.targetmid = + jMid); crit.addSql(si.interestmsid = rstep1.msid); I have tried below with references to the si table and it creates the 2nd query above with the incorrect INNER JOIN. crit.addEqualTo(si.targetmsid, jMsid); crit.addEqualTo(si.targetmid, jMid); crit.addEqualToField(si.interestmsid, memberServiceId); In this second case, if a reference is required, is there a way that I can not have an INNER JOIN on the foreign key be created. Thank you for any help. JohnE - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: ODMG UPDATE TOO FAST: DB not updated from jboss(daemon) and tomcat
Dear Thomas,
Thanks for your response.
The DB does get updated by the JBOSS daemon.
However, when the OJB implementation is accessed directly by tomcat
running in the same JBOSS instance, it does not update the database.
You are right that the corresponding sql update does not happen(no
corresponding sql statement).
Interestingly, if i update a second object in the same fashion, the
previous object gets updated and but the new one is not updated.
Enclosed is the code.
query.create(subQuery + where id = + tvi.getId());
Transaction tx = odmg.newTransaction();
tx.begin();
DList result = (DList) query.execute();
if (!result.isEmpty()) {
ObjectName ti = (ObjectName) result.get(0);
tx.lock(ti, Transaction.WRITE);
ti.setState(tvi.getStatus());
}
tx.commit();
Would really appreciate any help...
thx,
Sukesh
btn. I have tried marking the object dirty, removing it from the cache
and using tx.checkpoint() but no help.
On Wed, 2004-03-03 at 22:57, Thomas Mahler wrote:
Hi Sukesh,
If you can see by debugging (or easier by using the P6Spy jdbc tracer)
that ojb executes the correct insert or update, then the problem can not
be cause dby cache / gc interaction.
The only explanation i have for such a behaviour is that a database
commit is not done after executing your statement.
Why could this happen? JBOSS is a fullfledged J2EE container with JTA
transaction manager and Tomcat isn't.
SO under commit you must use explicit commits.
Please check your OJB.properties settings that define the transactional
behaviour.
cheeers,
Thomas
Sukesh Garg wrote:
My application accesses OJB via the JBOSS startup daemons and TOMCAT.
The database gets updated correctly when the operation is performed via
the JBOSS daemon.
However, if the operation is performed via tomcat, the db does not get
updated. There are no errors reported.
If I enable the debugger and put a breakpoint, then the db gets updated
properly. It seems as if the application is too fast for the cache to
update the database and garbage collection kicks in and cleans the
update object.
I am using ObjectCacheDefaultImpl. I tried explicitly marking the
object dirty but no success.
Would really appreciate any help.
thx,
Sukesh
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Re: Extent problem with ODMG
hi, you'll have to define the relationship to D in the abstract S as well as in the concrete B and C. it has to be defined in S because when navigation from A the descriptor of class S is used to resolve the relationship. i tried this meaningless query : Criteria crit = new Criteria(); crit.addLike(allArticlesInGroup.productGroup.groupName, B%); QueryByCriteria q = ueryFactory.newQuery(ProductGroupWithAbstractArticles.class, crit, true); if i do not define a relationship in class InterfaceArticle to class ProductGroup the SQL fails. after adding reference-descriptor name=productGroup it worked. ... class-descriptor class=org.apache.ojb.broker.InterfaceArticle extent-class class-ref=org.apache.ojb.broker.Article / extent-class class-ref=org.apache.ojb.broker.BookArticle / extent-class class-ref=org.apache.ojb.broker.CdArticle / reference-descriptor name=productGroup class-ref=org.apache.ojb.broker.ProductGroup documentationthis is the reference to an articles productgroup/documentation foreignkey field-ref=productGroupId/ attribute attribute-name=color attribute-value=red / attribute attribute-name=size attribute-value=tiny / /reference-descriptor /class-descriptor ... hth jakob Jakob Braeuchi wrote: hi charles, steve, i do not think that my fix is related to this problem. i propose to move the definition of the relationship to the concrete classes. jakob Charles Anthony wrote: Hi, I have a hunch - quite possibly misplaced - that this may have something to do the bug I reported in the thhread entitled. Criteria.setClassPath - the saga continues Although you are using an ODMG query, when the query is parsed, it does generate a standard QueryByCriteria. QueryByCriteria was getting the wrong class descriptor when paths of 1 sement were used. This would lead to the attribute name being passed to the query, as opposed to the column name. Jakob fixed this in CVS last night. This May Be A Red Herring. Cheers, Charles. -Original Message- From: Steve Clark [mailto:[EMAIL PROTECTED] Sent: 03 March 2004 19:56 To: OJB Users List Subject: Re: Extent problem with ODMG I'm still having this problem, so I'm going to try again. Using ODMG, RC5, Oracle 9i. Summary: - Class A has a 1-to-1 relationship 'abs' to an abstract superclass S - Class S has concrete subclasses B and C - Classes B and C share a common relationship 'com' to another class D; this relationship is defined in the superclass S - Class D has a property 'p' - A, B, C, and D map to distinct tables I am trying to retrieve all A's which have a given value for 'p' in the D associated with the related B or C (whichever one it is). So: select x from A where A.abs.com.p = ? A.abs has type S, the abstract superclass; A.abs.com has type D. This means that the query needs to generate some sort of interesting join to check for both possible paths to D (via B or C), knowing that either B or C will have exactly one row satisfying the join condition(s). In pseudocode: select x from A where if A.abs instanceof B then ((B) A.abs).com.p = ? else if A.abs instanceof C then ((C) A.abs).com.p = ? Should I expect this to work? The SQL query which is being generated is not only incorrect but invalid: OJB does not rewrite 'p', and in fact does not even mention D at all. I assume this has to do with the fact that the repository doesn't record the presence of the relationship 'com' in the abstract superclass, but only in the subclasses. Queries starting from B or C and following the 'com' relationship work fine. Am I out of luck, or is there some way I can get a working query out of this? thanks for any insights, Steve Clark Technology Applications Team Natural Resources Research Center/USGS [EMAIL PROTECTED] (970)226-9291 PS: Original message below. Name mappings: A = PartnerImpl B = SubSiteImpl C = TechAssistImpl D = SiteImpl S = AccomplishmentImpl abs = accomp com = site p = habTypeCode sc I'm having a problem with extents in ODMG. OJB is generating sc incorrect (and, in fact, invalid) SQL for my OQL query. I'm sc using RC5. sc My data model consists of Sites, which have collections of sc each of two kinds of Accomplishments (SubSites and sc TechAssists). An Accomplishment has a collection of Partners. sc In the reverse direction, each Partner is associated with sc exactly one Accomplishment (either a SubSite or a TechAssist), sc and an Accomplishment knows about its parent Site. My sc repository looks like this: sc !-- - - - - - - Site - - - - - - -- sc class-descriptor sc class=gov.doi.habits.dataobjects.SiteImpl sc table=SITE_DETAIL proxy=dynamic sc field-descriptor sc name=siteKey column=SITE_KEY jdbc-type=INTEGER sc primarykey=true autoincrement=true/ sc field-descriptor sc name=habTypeCode
Re: Extent problem with ODMG
This did indeed solve the problem. In summary, repository.xml has: - Foreign key field defined in subclasses only - Relationship defined in subclasses and in superclass And in Java the relationship accessors are defined in the superclass only. I didn't even know that one could put fields or relationships in the superclass in repository.xml. Thanks for pointing this out, Jakob! -- Steve Clark Technology Applications Team Natural Resources Research Center/USGS [EMAIL PROTECTED] (970)226-9291 Jakob Braeuchi writes: Jakob hi, Jakob you'll have to define the relationship to D in the abstract Jakob S as well as in the concrete B and C. it has to be defined Jakob in S because when navigation from A the descriptor of class Jakob S is used to resolve the relationship. Jakob i tried this meaningless query : Jakob Criteria crit = new Criteria(); Jakob crit.addLike(allArticlesInGroup.productGroup.groupName, Jakob B%); QueryByCriteria q = Jakob ueryFactory.newQuery(ProductGroupWithAbstractArticles.class, Jakob crit, true); Jakob if i do not define a relationship in class InterfaceArticle Jakob to class ProductGroup the SQL fails. after adding Jakob reference-descriptor name=productGroup it worked. Jakob ... Jakob class-descriptor Jakob class=org.apache.ojb.broker.InterfaceArticle Jakobextent-class Jakobclass-ref=org.apache.ojb.broker.Article / Jakobextent-class Jakobclass-ref=org.apache.ojb.broker.BookArticle / Jakobextent-class Jakobclass-ref=org.apache.ojb.broker.CdArticle / Jakobreference-descriptor Jakob name=productGroup Jakob class-ref=org.apache.ojb.broker.ProductGroup Jakob documentationthis is the reference to an Jakob articles Jakob productgroup/documentation Jakob foreignkey field-ref=productGroupId/ Jakob attribute attribute-name=color Jakob attribute-value=red / Jakob attribute attribute-name=size Jakob attribute-value=tiny / Jakob/reference-descriptor Jakob /class-descriptor Jakob ... Jakob hth jakob hi charles, steve, i do not think that my fix is related to this problem. i propose to move the definition of the relationship to the concrete classes. jakob Charles Anthony wrote: Hi, I have a hunch - quite possibly misplaced - that this may have something to do the bug I reported in the thhread entitled. Criteria.setClassPath - the saga continues Although you are using an ODMG query, when the query is parsed, it does generate a standard QueryByCriteria. QueryByCriteria was getting the wrong class descriptor when paths of 1 sement were used. This would lead to the attribute name being passed to the query, as opposed to the column name. Jakob fixed this in CVS last night. This May Be A Red Herring. Cheers, Charles. -Original Message- From: Steve Clark [mailto:[EMAIL PROTECTED] Sent: 03 March 2004 19:56 To: OJB Users List Subject: Re: Extent problem with ODMG I'm still having this problem, so I'm going to try again. Using ODMG, RC5, Oracle 9i. Summary: - Class A has a 1-to-1 relationship 'abs' to an abstract superclass S - Class S has concrete subclasses B and C - Classes B and C share a common relationship 'com' to another class D; this relationship is defined in the superclass S - Class D has a property 'p' - A, B, C, and D map to distinct tables I am trying to retrieve all A's which have a given value for 'p' in the D associated with the related B or C (whichever one it is). So: select x from A where A.abs.com.p = ? A.abs has type S, the abstract superclass; A.abs.com has type D. This means that the query needs to generate some sort of interesting join to check for both possible paths to D (via B or C), knowing that either B or C will have exactly one row satisfying the join condition(s). In pseudocode: select x from A where if A.abs instanceof B then ((B) A.abs).com.p = ? else if A.abs instanceof C then ((C) A.abs).com.p = ? Should I expect this to work? The SQL query which is being generated is not only incorrect but invalid: OJB does not rewrite 'p', and in fact does not even mention D at all. I assume this has to do with the fact that the repository doesn't record the presence of the relationship 'com' in the abstract superclass, but only in the subclasses. Queries starting from B or C and following the 'com' relationship work fine. Am I out of luck, or is there some way I can get a working query out of this? thanks for any insights, Steve Clark Technology Applications Team Natural Resources Research Center/USGS [EMAIL PROTECTED] (970)226-9291 PS: Original message below. Name mappings: A =
Re: [OTM] can not delete from dependent collection
Hi Joerg, I have fixed this issue too. You are extremely productive tester! :-) Oleg On Tuesday 02 March 2004 16:39, Joerg Heinicke wrote: My persons have a name, changing this one and making this change persistent does not update the database. After makePersistent(debitor) it contains again the original form, just like as it was not touched. The same happened for me for the addresses, changes on them are not saved (both removing and adding to an existing list and changing entries on a specific address). - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
column name is a reserved keyword
Hi, I am changing an existing application to use OJB. The problem that I ran into is that some of the column names are reserved keywords, e.g. 'print'. I need to configure OJB to put all column names in brackets, e.g. [print], when retrieving values from the database. Otherwise, SQL Server throws a Reserved keyword exception. How do I do this? Thanks. Oleg * This e-mail may contain privileged or confidential material intended for the named recipient only. If you are not the named recipient, delete this message and all attachments. Unauthorized reviewing, copying, printing, disclosing, or otherwise using information in this e-mail is prohibited. We reserve the right to monitor e-mail sent through our network. *
