Re: MySQL 5 and date issues

Mon, 17 Jul 2006 13:25:20 -0700

It's how I worked around a similar problem, with existing data from some other app... So if it doesn't then I must just be really lucky. : ) 

_m

On Jul 17, 2006, at 4:22 PM, Randy Wigginton wrote:


That won't work for values already inserted in the DB.

On Jul 17, 2006, at 3:28 PM, Matt Hanlon wrote:
Or you can just add &zeroDateTimeBehavior=convertToNull to the end of your jdbc URL... 

That should fix your problem.

    some.connectionDictionary = {
URL = "jdbc:mysql://127.0.0.1/somedb? capitalizeTypeNames=true&autoReconnect=true&maxReconnects=3&zeroDateT imeBehavior=convertToNull"; 
        ....
        }
_m


oh yeah, happens all the time.  There are more than a few
strangenesses about dates in Mysql. Make sure to assign your dates a value, or else leave them as null. Make sure to create all timestamp 
columns with default null onupdate null.  (I think thats the right
syntax, you should check)  If you don't, the first date column in
your table will default to current_timestamp, and it will magically
change itself on every update.

To recover from this situation, you'll need to manually fix the
values in the DB.

On Jul 17, 2006, at 1:53 PM, William Hatch wrote:



mySQL 5.0.18 with adaptor mysql-connector-java-3.1.12, WO 5.3.1 OSX
10.4.7

I'm just starting a new project using mySQL, and am running into
date issues. If I have an attribute that's external type is set to
DATE, and Java type is NSTimestamp, I'm able to insert values, but
when retrieving them I get the following exception.

I remember a few posts that touched on stricter date type issues
with mySQL 5, but can't seem to locate them worth a damned at the
moment;-) Does anybody have a fix or work around for this? Thanks.

<com.webobjects.appserver._private.WOComponentRequestHandler>:
Exception occurred while handling request:
com.webobjects.jdbcadaptor.JDBCAdaptorException: Value '0000-00-00'
can not be represented as java.sql.Date
[2006-07-17 13:51:30 EDT] <WorkerThread2>
com.webobjects.jdbcadaptor.JDBCAdaptorException: Value '0000-00-00'
can not be represented as java.sql.Date
        at com.webobjects.jdbcadaptor.JDBCColumn._fetchValue
(JDBCColumn.java:325)
        at com.webobjects.jdbcadaptor.JDBCColumn.fetchValue
(JDBCColumn.java:307)
        at com.webobjects.jdbcadaptor.JDBCChannel.fetchRow
(JDBCChannel.java:1406)
        at com.webobjects.eoaccess.EODatabaseChannel._fetchObject
(EODatabaseChannel.java:302)
        at
com.webobjects.eoaccess.EODatabaseContext._objectsWithFetchSpecific ati 
onEditingContext(EODatabaseContext.java:3221)
        at
com.webobjects.eoaccess.EODatabaseContext.objectsWithFetchSpecifica tio 
n(EODatabaseContext.java:3346)
        at
com.webobjects.eocontrol.EOObjectStoreCoordinator.objectsWithFetchS pec 
ification(EOObjectStoreCoordinator.java:539)
        at
com.webobjects.eocontrol.EOEditingContext.objectsWithFetchSpecifica tio 
n(EOEditingContext.java:4114)
        at com.webobjects.eoaccess.EODatabaseDataSource.fetchObjects
(EODatabaseDataSource.java:633)
        at com.webobjects.appserver.WODisplayGroup.fetch
(WODisplayGroup.java:2191)
        at com.webobjects.directtoweb.D2WListPage.setDataSource
(D2WListPage.java:196)
        at com.webobjects.directtoweb.D2WQueryPage.queryAction
(D2WQueryPage.java:183)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke
(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke
(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:324)
        at com.webobjects.foundation.NSKeyValueCoding$1.methodValue
(NSKeyValueCoding.java:684)
        at com.webobjects.foundation.NSKeyValueCoding
$_MethodBinding.valueInObject(NSKeyValueCoding.java:1160)
        at com.webobjects.foundation.NSKeyValueCoding
$DefaultImplementation.valueForKey(NSKeyValueCoding.java:1268)
        at com.webobjects.appserver.WOComponent.valueForKey
(WOComponent.java:1539)
        at com.webobjects.foundation.NSKeyValueCoding$Utility.valueForKey
(NSKeyValueCoding.java:498)
        at com.webobjects.foundation.NSKeyValueCodingAdditions
$DefaultImplementation.valueForKeyPath
(NSKeyValueCodingAdditions.java:212)
        at com.webobjects.appserver.WOComponent.valueForKeyPath
(WOComponent.java:1600)
        at
com.webobjects.appserver._private.WOKeyValueAssociation.valueInComp one 
nt(WOKeyValueAssociation.java:46)
        at com.webobjects.appserver._private.WOActiveImage.invokeAction
(WOActiveImage.java:255)
        at
com.webobjects.appserver._private.WODynamicGroup.invokeChildrenActi on( 
WODynamicGroup.java:101)
        at com.webobjects.appserver._private.WODynamicGroup.invokeAction
(WODynamicGroup.java:110)
        at com.webobjects.appserver._private.WOForm.invokeAction
(WOForm.java:82)
        at
com.webobjects.appserver._private.WODynamicGroup.invokeChildrenActi on( 
WODynamicGroup.java:101)
        at com.webobjects.appserver._private.WODynamicGroup.invokeAction
(WODynamicGroup.java:110)
        at
com.webobjects.appserver._private.WOComponentContent.invokeAction
(WOComponentContent.java:31)
        at
com.webobjects.appserver._private.WODynamicGroup.invokeChildrenActi on( 
WODynamicGroup.java:101)
        at com.webobjects.appserver._private.WODynamicGroup.invokeAction
(WODynamicGroup.java:110)
        at
com.webobjects.appserver._private.WOHTMLURLValuedElement.invokeActi on( 
WOHTMLURLValuedElement.java:115)
        at
com.webobjects.appserver._private.WODynamicGroup.invokeChildrenActi on( 
WODynamicGroup.java:101)
        at com.webobjects.appserver._private.WODynamicGroup.invokeAction
(WODynamicGroup.java:110)
        at com.webobjects.appserver.WOComponent.invokeAction
(WOComponent.java:945)
        at
com.webobjects.appserver._private.WOComponentReference.invokeAction
(WOComponentReference.java:104)
at com.webobjects.appserver._private.WOSwitchComponent.invokeAction 
(WOSwitchComponent.java:171)
        at com.webobjects.appserver.WOComponent.invokeAction
(WOComponent.java:945)
        at com.webobjects.appserver.WOSession.invokeAction(WOSession.java:
1168)
        at com.webobjects.appserver.WOApplication.invokeAction
(WOApplication.java:1375)
        at
com.webobjects.appserver._private.WOComponentRequestHandler._dispat chW 
ithPreparedPage(WOComponentRequestHandler.java:196)
        at
com.webobjects.appserver._private.WOComponentRequestHandler._dispat chW 
ithPreparedSession(WOComponentRequestHandler.java:287)
        at
com.webobjects.appserver._private.WOComponentRequestHandler._dispat chW 
ithPreparedApplication(WOComponentRequestHandler.java:322)
        at
com.webobjects.appserver._private.WOComponentRequestHandler._handle Req 
uest(WOComponentRequestHandler.java:358)
        at
com.webobjects.appserver._private.WOComponentRequestHandler.handleR equ 
est(WOComponentRequestHandler.java:432)
        at com.webobjects.appserver.WOApplication.dispatchRequest
(WOApplication.java:1306)
        at com.webobjects.appserver._private.WOWorkerThread.runOnce
(WOWorkerThread.java:173)
        at com.webobjects.appserver._private.WOWorkerThread.run
(WOWorkerThread.java:254)
        at java.lang.Thread.run(Thread.java:552)




Bill



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