This is now biting me.
I have the following:
public static ERXEnterpriseObjectCache<Airport> cacheByPrimaryKey = new
ERXEnterpriseObjectCache<Airport>(Airport.ENTITY_NAME,
"primaryKey", // Cache Key
null, // qualifier
300000L, // timeout - 0=never
true, // shouldRetainObjects
true, // shouldFetchInitialValues
false); // shouldReturnUnsavedObjects
Which is tripping the same bug.
Why, oh why, does SQL generation need to initialize the EO’s class?? Shouldn’t
the EOClassDescription or EOGenericRecord be enough? I don’t see what getting
the actual class accomplishes, other than make SQL Generation more fragile. If
ERXEnterpriseObjectCache breaks it, what else can?
Yes, I’m second-guessing Mike Schrag. (Hi Mike)
So, Mike, is this something that is possible to change (yes, I know it would be
on me to do it - be afraid) or is there something about how the sql generation
works that requires more than the Entity itself?
Thanks,
Dave
On Oct 26, 2011, at 5:19 PM, Chuck Hill <[email protected]> wrote:
> The fundamental issue is that ERXEnterpriseObjectCache is intended to be used
> in a Wonder application, where those properties are read and used.
> Generating SQL only loads the classes, it does not run in the context of a
> running WO application.
>
> You probably DO want to retain the objects, you just don't want to initialize
> this in a static block. Use lazy initialization so that the class can load
> without setting up the cache.
>
>
> Chuck
>
>
> On 2011-10-26, at 2:16 PM, Issam Maamria wrote:
>
>> Thanks Chuck for the pointer.
>>
>> The issue was in a static initialiser that executes the following line in
>> its call trace:
>> new ERXEnterpriseObjectCache<XXX>(entityName, XXX.NAME_KEY, null,
>> CACHE_TIMEOUT, true, false, false);
>>
>> I changed the argument 'shouldRetainObjects''s value from true to false, and
>> it did the trick.
>>
>> However, I do not fully understand what was the fundamental issue!
>>
>> Regards
>>
>> Issam
>>
>> On 26 October 2011 19:26, Chuck Hill <[email protected]> wrote:
>> Hi Issam,
>>
>> It is a bad idea to do anything in the constructor of an EO, which I assume
>> is what is happening here:
>>
>>
>>> at
>>> er.extensions.eof.ERXEnterpriseObjectCache.setRetainObjects(ERXEnterpriseObjectCache.java:789)
>>> at
>>> er.extensions.eof.ERXEnterpriseObjectCache.<init>(ERXEnterpriseObjectCache.java:201)
>>> at indoc.app.common.IDStaticTag.tagCacheForEntity(IDStaticTag.java:75)
>>> at indoc.app.common.IDStaticTag.<init>(IDStaticTag.java:61)
>>> at indoc.app.entities.Content.<clinit>(Content.java:39)
>>
>> This can often cause EOF problems. A better choice is to use lazy
>> initialization.
>> http://en.wikipedia.org/wiki/Lazy_initialization
>>
>>
>> Chuck
>>
>>
>> On 2011-10-26, at 11:00 AM, Issam Maamria wrote:
>>
>>> Hi all,
>>>
>>> Thank you very much for the pointers. They, however, were not the cause of
>>> the problem.
>>>
>>> An interesting thing is that the following exception always happens before
>>> the one I mentioned before.
>>>
>>> I have the following lines in my properties file:
>>>
>>> # EOF
>>>
>>> er.extensions.ERXEC.safeLocking=true
>>>
>>> er.extensions.ERXEC.useSharedEditingContext=false
>>>
>>> er.extensions.ERXEC.markOpenLocks = false
>>>
>>> er.extensions.ERXEC.traceOpenLocks = false
>>>
>>>
>>>
>>> er.extensions.ERXEnterpriseObject.applyRestrictingQualifierOnInsert=true
>>>
>>> er.extensions.ERXEnterpriseObject.updateInverseRelationships=true
>>>
>>> The trace is :
>>>
>>> java.lang.ExceptionInInitializerError
>>> at java.lang.Class.forName0(Native Method)
>>> at java.lang.Class.forName(Class.java:169)
>>> at
>>> com.webobjects.foundation._NSUtilities._classWithPartialName(_NSUtilities.java:348)
>>> at
>>> com.webobjects.foundation._NSUtilities.classWithName(_NSUtilities.java:335)
>>> at
>>> com.webobjects.eoaccess.EOModel._setEntityForEntityNameClassName(EOModel.java:1299)
>>> at
>>> com.webobjects.eoaccess.EOModel._addFakeEntityWithPropertyList(EOModel.java:1337)
>>> at
>>> com.webobjects.eoaccess.EOModel._initWithTableOfContentsPropertyListPathURL(EOModel.java:1141)
>>> at com.webobjects.eoaccess.EOModel.<init>(EOModel.java:838)
>>> at
>>> com.webobjects.eoaccess.EOModelGroup.addModelWithPathURL(EOModelGroup.java:443)
>>> at
>>> org.objectstyle.wolips.eomodeler.core.sql.EOFSQLGenerator53.<init>(EOFSQLGenerator53.java:121)
>>> at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native
>>> Method)
>>> at
>>> sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
>>> at
>>> sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
>>> at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
>>> at
>>> org.objectstyle.wolips.eomodeler.core.sql.EOFSQLGeneratorFactory.sqlGenerator(EOFSQLGeneratorFactory.java:43)
>>> at
>>> org.objectstyle.wolips.eomodeler.actions.GenerateSQLDialog.generateSql(GenerateSQLDialog.java:297)
>>> at
>>> org.objectstyle.wolips.eomodeler.actions.GenerateSQLDialog$1.run(GenerateSQLDialog.java:279)
>>> at java.lang.Thread.run(Thread.java:680)
>>> Caused by: java.lang.RuntimeException: ERXEnterpriseObjectCache requires
>>> automatic locking when objects are retained. Set
>>> er.extensions.ERXEC.defaultAutomaticLockUnlock or
>>> er.extensions.ERXEC.safeLocking in your Properties file
>>> at
>>> er.extensions.eof.ERXEnterpriseObjectCache.setRetainObjects(ERXEnterpriseObjectCache.java:789)
>>> at
>>> er.extensions.eof.ERXEnterpriseObjectCache.<init>(ERXEnterpriseObjectCache.java:201)
>>> at indoc.app.common.IDStaticTag.tagCacheForEntity(IDStaticTag.java:75)
>>> at indoc.app.common.IDStaticTag.<init>(IDStaticTag.java:61)
>>> at indoc.app.entities.Content.<clinit>(Content.java:39)
>>> ... 18 more
>>>
>>> Regards
>>>
>>> Issam
>>>
>>> On 26 October 2011 16:51, Chuck Hill <[email protected]> wrote:
>>> static initialization blocks can also cause problems for SQL generation -
>>> check that they are not throwing exceptions.
>>>
>>> On 2011-10-26, at 7:15 AM, John Huss wrote:
>>>
>>>> The classes that you declare for you entities must be reachable from the
>>>> project where the model is located, usually in the same project.
>>>>
>>>> On Wed, Oct 26, 2011 at 6:19 AM, Issam Maamria <[email protected]> wrote:
>>>> Hi all,
>>>>
>>>> I have an issue with SQL generation from an EOModel. The thing is it
>>>> sometimes works (this happens randomly), and most of the time comes up
>>>> with an error:
>>>>
>>>> java.lang.NoClassDefFoundError: Could not initialize class XXXXXXXX
>>>> at java.lang.Class.forName0(Native Method)
>>>> at java.lang.Class.forName(Class.java:169)
>>>> at
>>>> com.webobjects.foundation._NSUtilities._classWithPartialName(_NSUtilities.java:348)
>>>> at
>>>> com.webobjects.foundation._NSUtilities.classWithName(_NSUtilities.java:335)
>>>> at
>>>> com.webobjects.eoaccess.EOModel._setEntityForEntityNameClassName(EOModel.java:1299)
>>>> at
>>>> com.webobjects.eoaccess.EOModel._addFakeEntityWithPropertyList(EOModel.java:1337)
>>>> at
>>>> com.webobjects.eoaccess.EOModel._initWithTableOfContentsPropertyListPathURL(EOModel.java:1141)
>>>> at com.webobjects.eoaccess.EOModel.<init>(EOModel.java:838)
>>>> at
>>>> com.webobjects.eoaccess.EOModelGroup.addModelWithPathURL(EOModelGroup.java:443)
>>>> at
>>>> org.objectstyle.wolips.eomodeler.core.sql.EOFSQLGenerator53.<init>(EOFSQLGenerator53.java:121)
>>>> at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native
>>>> Method)
>>>> at
>>>> sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
>>>> at
>>>> sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
>>>> at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
>>>> at
>>>> org.objectstyle.wolips.eomodeler.core.sql.EOFSQLGeneratorFactory.sqlGenerator(EOFSQLGeneratorFactory.java:43)
>>>> at
>>>> org.objectstyle.wolips.eomodeler.actions.GenerateSQLDialog.generateSql(GenerateSQLDialog.java:297)
>>>> at
>>>> org.objectstyle.wolips.eomodeler.actions.GenerateSQLDialog$1.run(GenerateSQLDialog.java:279)
>>>> at java.lang.Thread.run(Thread.java:680)
>>>>
>>>> SQL generation is a GREAT feature, and it is frustrating that I cannot get
>>>> it to work on a consistent basis.
>>>>
>>>> Regards
>>>>
>>>> Issam
>>>>
>>>> ------------------------------------------------------------------------------
>>>> The demand for IT networking professionals continues to grow, and the
>>>> demand for specialized networking skills is growing even more rapidly.
>>>> Take a complimentary Learning@Cisco Self-Assessment and learn
>>>> about Cisco certifications, training, and career opportunities.
>>>> http://p.sf.net/sfu/cisco-dev2dev
>>>> _______________________________________________
>>>> Wonder-disc mailing list
>>>> [email protected]
>>>> https://lists.sourceforge.net/lists/listinfo/wonder-disc
>>>>
>>>>
>>>> ------------------------------------------------------------------------------
>>>> The demand for IT networking professionals continues to grow, and the
>>>> demand for specialized networking skills is growing even more rapidly.
>>>> Take a complimentary Learning@Cisco Self-Assessment and learn
>>>> about Cisco certifications, training, and career opportunities.
>>>> http://p.sf.net/sfu/cisco-dev2dev_______________________________________________
>>>> Wonder-disc mailing list
>>>> [email protected]
>>>> https://lists.sourceforge.net/lists/listinfo/wonder-disc
>>>
>>> --
>>> Chuck Hill Senior Consultant / VP Development
>>>
>>> Practical WebObjects - for developers who want to increase their overall
>>> knowledge of WebObjects or who are trying to solve specific problems.
>>> http://www.global-village.net/products/practical_webobjects
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>> ------------------------------------------------------------------------------
>>> The demand for IT networking professionals continues to grow, and the
>>> demand for specialized networking skills is growing even more rapidly.
>>> Take a complimentary Learning@Cisco Self-Assessment and learn
>>> about Cisco certifications, training, and career opportunities.
>>> http://p.sf.net/sfu/cisco-dev2dev_______________________________________________
>>> Wonder-disc mailing list
>>> [email protected]
>>> https://lists.sourceforge.net/lists/listinfo/wonder-disc
>>
>> --
>> Chuck Hill Senior Consultant / VP Development
>>
>> Practical WebObjects - for developers who want to increase their overall
>> knowledge of WebObjects or who are trying to solve specific problems.
>> http://www.global-village.net/products/practical_webobjects
>>
>>
>>
>>
>>
>>
>>
>>
>> ------------------------------------------------------------------------------
>> The demand for IT networking professionals continues to grow, and the
>> demand for specialized networking skills is growing even more rapidly.
>> Take a complimentary Learning@Cisco Self-Assessment and learn
>> about Cisco certifications, training, and career opportunities.
>> http://p.sf.net/sfu/cisco-dev2dev_______________________________________________
>> Wonder-disc mailing list
>> [email protected]
>> https://lists.sourceforge.net/lists/listinfo/wonder-disc
>
> --
> Chuck Hill Senior Consultant / VP Development
>
> Practical WebObjects - for developers who want to increase their overall
> knowledge of WebObjects or who are trying to solve specific problems.
> http://www.global-village.net/products/practical_webobjects
>
>
>
>
>
>
>
>
> ------------------------------------------------------------------------------
> The demand for IT networking professionals continues to grow, and the
> demand for specialized networking skills is growing even more rapidly.
> Take a complimentary Learning@Cisco Self-Assessment and learn
> about Cisco certifications, training, and career opportunities.
> http://p.sf.net/sfu/cisco-dev2dev
> _______________________________________________
> Wonder-disc mailing list
> [email protected]
> https://lists.sourceforge.net/lists/listinfo/wonder-disc
>
>
—————————————————————————————
WebObjects - so easy that even Dave Avendasora can do it!™
—————————————————————————————
David Avendasora
Senior Software Abuser
Nekesto, Inc.
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