On Jul 8, 2010, at 10:58 AM, Chuck Hill wrote:
> Hi Greg,
>
> Is the database content (not the schema) the same for both deployments? Could one have a very large number of back-pointing relationships that the other does not have? If so, I will suggest that you have a modelling issue. If not... puzzling.
>
> Chuck
>
>
> On Jul 8, 2010, at 6:46 AM, Greg Lappen wrote:
>
>> Hi all,
>>
>> I am running into a bizarre issue with our WebObjects Application. I have searched the lists for quite a while, but could not find a case where someone had the same problem.
>>
>> What is even stranger is that our application is deployed on two different servers, both with WebObjects 5.4.3 and in one environment the issue occurs, and not in the other.
>>
>> What I see is that calling editingContext.saveChanges() is returning immediately in one case, and hanging for 20 seconds in the other case. It's not really "hanging" - the CPU is pegged at over 100%, and taking thread dumps during that 20 seconds shows something like this:
>>
>> "WorkerThread3" prio=5 tid=0x000000010296a800 nid=0x1519b2000 runnable [0x00000001519af000]
>> java.lang.Thread.State: RUNNABLE
>> at java.lang.reflect.Array.newInstance(Array.java:52)
>> at com.webobjects.foundation._NSCollectionPrimitives.copyArray(_NSCollectionPrimitives.java:123)
>> at com.webobjects.foundation.NSArray.objectsNoCopy(NSArray.java:356)
>> at com.webobjects.foundation.NSMutableArray._removeObject(NSMutableArray.java:225)
>> at com.webobjects.foundation.NSMutableArray.removeObject(NSMutableArray.java:247)
>> at com.webobjects.foundation.NSMutableArray.removeObjects(NSMutableArray.java:399)
>> at com.webobjects.foundation.NSMutableArray.removeObjectsInArray(NSMutableArray.java:285)
>> at com.webobjects.foundation._NSArrayUtilities.arrayExcludingObjectsFromArray(_NSArrayUtilities.java:173)
>> at com.webobjects.eoaccess.EODatabaseContext.recordChangesInEditingContext(EODatabaseContext.java:5943)
>> at com.webobjects.eocontrol.EOObjectStoreCoordinator.saveChangesInEditingContext(EOObjectStoreCoordinator.java:373)
>> at com.webobjects.eocontrol.EOEditingContext.saveChanges(EOEditingContext.java:3192)
>> at net.paperfree.lightbeam.model.LPFile.setFileData(LPFile.java:102)
>>
>> Seems like the EODatabaseContext is doing some housekeeping before executing the SQL....here's the Java code in question:
>>
>> public class LPFile extends _LPFile {
>> ....
>> ....
>> public synchronized void setFileData(NSData fileData) throws IOException {
>> // Update forms by deleting existing ones, then adding new ones
>> for (int i=lpFileForms().count()-1; i>=0; i--) {
>> final LPFileForm lpFileForm = (LPFileForm) lpFileForms().objectAtIndex(i);
>> this.removeFromLpFileForms(lpFileForm);
>> editingContext().deleteObject(lpFileForm);
>> }
>>
>> // Get new form list via SOAP call
>> Element docInfoElm = LPServer.threadLocal().exportDocumentInfo(this);
>> List formElms = formsElm.getChildren("form");
>> for (int i = 0; i < formElms.size(); i++) {
>> Element formElm = (Element) formElms.get(i);
>> LPFileForm lpFileForm = new LPFileForm();
>>
>> // extract data from xml, put into lpFileForm
>>
>> // Setup relationships to lpForm and lpFile
>> lpFileForm.setLpForm(lpForm);
>> lpFileForm.setLpFormID(lpForm.id());
>> lpFileForm.setLpFile(this);
>> lpFileForm.setLpFileID(this.fileID());
>>
>> this.addToLpFileForms(lpFileForm);
>> editingContext().insertObject(lpFileForm);
>> }
>>
>> editingContext().saveChanges();
>> }
>> ....
>> ....
>> }
>>
>> Does the above code have anything obviously wrong with it? It's basically clearing a one-to-many relationship, then re-populating it. I call this.addToLpFileForms() because I want the relationship updated in memory as well as in the database.
>>
>> Any insight would be hugely appreciated.
>>
>> Thanks,
>>
>> Greg
>> _______________________________________________
>> Do not post admin requests to the list. They will be ignored.
>> Webobjects-dev mailing list (
email@hidden)
>> Help/Unsubscribe/Update your Subscription:
>>
>> This email sent to
email@hidden
>
> --
> 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
>
>
>
>
>
>
>
> _______________________________________________
> Do not post admin requests to the list. They will be ignored.
> Webobjects-dev mailing list (
email@hidden)
> Help/Unsubscribe/Update your Subscription:
>
> This email sent to
email@hidden