Actually you may want to upgrade to 2.0.2 - you may be affected by
this bug that was fixed in the last release:
https://issues.apache.org/cayenne/browse/CAY-712
Andrus
On Jan 21, 2007, at 11:10 PM, Alexander Lamb (dev) wrote:
> Well, it might be me... having trouble with a class hierarchy. So
> first I'll check that, then I'll be back with the
> validateForInsert :-)
>
> On Jan 21, 2007, at 6:49 PM, Alexander Lamb (dev) wrote:
>
>> Hello, me again!
>>
>> Are you certain it is possible to handle fetches and creations in
>> validateForInsert like this for example:
>>
>> public void validateForInsert(ValidationResult validationResult)
>> {
>> Scope scope = Scope.scopeWithShortNameInContext
>> (this.getShortName(),this.getDataContext());
>> if(scope == null)
>> {
>> RegistryScope registryScope = new RegistryScope();
>> this.getDataContext().registerNewObject(registryScope);
>> registryScope.setShortName(this.getShortName());
>> registryScope.setScopeClass("REGISTRY");
>> registryScope.setName(this.getLongName());
>> registryScope.setRegistry(this);
>> }
>> }
>>
>> I get a wonderfull index out of bounds deep in the cayenne classes:
>>
>> java.lang.IndexOutOfBoundsException: Index: 0, Size: 0
>> at java.util.ArrayList.RangeCheck(ArrayList.java:546)
>> at java.util.ArrayList.get(ArrayList.java:321)
>> at java.util.Collections$UnmodifiableList.get
>> (Collections.java:1155)
>> at
>> org.apache.cayenne.access.trans.SelectTranslator.appendQueryColumns
>> (SelectTranslator.java:400)
>> at
>> org.apache.cayenne.access.trans.SelectTranslator.buildResultColumns
>> (SelectTranslator.java:338)
>> at
>> org.apache.cayenne.access.trans.SelectTranslator.createSqlString
>> (SelectTranslator.java:113)
>> at
>> org.apache.cayenne.dba.mysql.MySQLSelectTranslator.createSqlString
>> (MySQLSelectTranslator.java:31)
>> at
>> org.apache.cayenne.access.trans.QueryAssembler.createStatement
>> (QueryAssembler.java:95)
>> at
>> org.apache.cayenne.access.jdbc.SelectAction.performAction
>> (SelectAction.java:71)
>> at org.apache.cayenne.access.DataNodeQueryAction.runQuery
>> (DataNodeQueryAction.java:59)
>> at org.apache.cayenne.access.DataNode.performQueries
>> (DataNode.java:273)
>> at org.apache.cayenne.access.DataDomainQueryAction.runQuery
>> (DataDomainQueryAction.java:319)
>> at org.apache.cayenne.access.DataDomainQueryAction.access
>> $000(DataDomainQueryAction.java:60)
>> at org.apache.cayenne.access.DataDomainQueryAction
>> $1.transform(DataDomainQueryAction.java:291)
>> at org.apache.cayenne.access.DataDomain.runInTransaction
>> (DataDomain.java:820)
>> at
>> org.apache.cayenne.access.DataDomainQueryAction.runQueryInTransaction
>> (DataDomainQueryAction.java:288)
>> at org.apache.cayenne.access.DataDomainQueryAction.execute
>> (DataDomainQueryAction.java:109)
>> at org.apache.cayenne.access.DataDomain.onQuery
>> (DataDomain.java:730)
>> at
>> org.apache.cayenne.util.ObjectContextQueryAction.runQuery
>> (ObjectContextQueryAction.java:217)
>> at org.apache.cayenne.access.DataContextQueryAction.execute
>> (DataContextQueryAction.java:54)
>> at org.apache.cayenne.access.DataContext.onQuery
>> (DataContext.java:1386)
>> at org.apache.cayenne.access.DataContext.performQuery
>> (DataContext.java:1375)
>> at ch.rodano.role.model.Scope.scopeWithShortNameInContext
>> (Scope.java:18)
>> at ch.rodano.role.model.Registry.validateForInsert
>> (Registry.java:39)
>>
>>
>> On Jan 17, 2007, at 8:53 AM, Andrus Adamchik wrote:
>>
>>> Hi Alex,
>>>
>>> Yes you can do that. Validation routine is executed before object
>>> changes are finalized, allowing arbitrary object operations to be
>>> performed during the validation.
>>>
>>> Andrus
>>>
>>>
>>> On Jan 17, 2007, at 12:07 AM, Alexander Lamb (dev) wrote:
>>>
>>>> Hello list,
>>>>
>>>> I am currently using Cayenne 2.0.
>>>>
>>>> I read it was possible to modify objects during a
>>>> validateForInsert or validateForSave call (e.g. not the same as
>>>> old WebObjects).
>>>>
>>>> What about creating a new object and inserting it in the
>>>> DataContext? Will it get saved at the same time?
>>>>
>>>> My problem is the following:
>>>>
>>>> I have an object which has a to-one relationship to another
>>>> object. That other object has to be created at the same time as
>>>> the first one. I would like to make it automatic so the user of
>>>> the library I am writing can simply create and insert the first
>>>> object and the second one will follow.
>>>>
>>>> To understand why I am creating two objects related one-to-one
>>>> it is because I have an entity which can be related (to-one) to
>>>> either one of four other entities. I am doing this instead of
>>>> modeling things with a class hierarchy since cayenne doesn't
>>>> support multiple tables class hierarchies.
>>>>
>>>> Thanks for any hints!
>>>>
>>>> Alex
>>>>
>>>
>>
>
>
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