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https://issues.apache.org/jira/browse/CAY-2881?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Andrus Adamchik updated CAY-2881:
---------------------------------
    Description: 
On most databases, we no longer need ValueObjectTypes for java.time classes, as 
demonstrated by CAY-2701 for modern MySQL (also see 
https://dev.mysql.com/blog-archive/support-for-date-time-types-in-connector-j-8-0/
 ) :

{noformat}
rs.getObject(i, LocalDateTime.class);
st.setObject(pos, val, type);
{noformat}

So let's make the approach in CAY-2701 the default in Cayenne, creating the 
appropriate ExtendedTypes, and then check which databases DO NOT support it, 
and create custom ExtendedTypes for those. 

Of course, as a result MySQLLocalDateTimeType will no longer be needed, 
superseded by  the standard one.

  was:
On most databases, we no longer need ValueObjectTypes for java.time classes, as 
demonstrated by CAY-2701 for modern MySQL (also see 
https://dev.mysql.com/blog-archive/support-for-date-time-types-in-connector-j-8-0/
 ) . So let's make the approach in CAY-2701 the default in Cayenne, and then 
test and see what databases DO NOT support it, and create custom ExtendedTypes 
for those. 

Of course, as a result MySQLLocalDateTimeType will no longer be needed, 
superseded by  the standard ExtendedTypes.


> Switch to standard JDBC approach to read/write java.time classes
> ----------------------------------------------------------------
>
>                 Key: CAY-2881
>                 URL: https://issues.apache.org/jira/browse/CAY-2881
>             Project: Cayenne
>          Issue Type: Improvement
>            Reporter: Andrus Adamchik
>            Priority: Minor
>             Fix For: 5.0-M2
>
>
> On most databases, we no longer need ValueObjectTypes for java.time classes, 
> as demonstrated by CAY-2701 for modern MySQL (also see 
> https://dev.mysql.com/blog-archive/support-for-date-time-types-in-connector-j-8-0/
>  ) :
> {noformat}
> rs.getObject(i, LocalDateTime.class);
> st.setObject(pos, val, type);
> {noformat}
> So let's make the approach in CAY-2701 the default in Cayenne, creating the 
> appropriate ExtendedTypes, and then check which databases DO NOT support it, 
> and create custom ExtendedTypes for those. 
> Of course, as a result MySQLLocalDateTimeType will no longer be needed, 
> superseded by  the standard one.



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