You are viewing a plain text version of this content. The canonical link for it is here.
Posted to legal-discuss@apache.org by Andrus Adamchik <aa...@apache.org> on 2008/09/29 10:13:22 UTC
Java 1.5 / 1.6 coexistence issues
We are trying to setup Cayenne ORM project structure to be both
buildable and runnable under Java 1.5 and 1.6. ("buildable" is
important for non-64-bit Intel Mac users. There's no Java 6 for those
older Macs).
The problem is that we are implementing a bunch of java[x].sql
interfaces in Cayenne that have changed between the versions of Java.
So take for instance a class implementing java.sql.ResultSet. To be
able to compile against 1.6 jars, we need methods like this:
public java.sql.SQLXML getSQLXML(int) {...}
Which does not compile against 1.5 jars. So what I am thinking is
building a small "JDBC4-compatibility" Maven module based on OpenJDK
(or Sun JRE) that contains needed interfaces from java[x].sql
packages. It will be done outside Apache. Then the plan to make it a
Cayenne "provided" dependency. I.e. it won't be shipped with Cayenne.
Any licensing considerations with this approach?
Thanks,
Andrus
---------------------------------------------------------------------
DISCLAIMER: Discussions on this list are informational and educational
only. Statements made on this list are not privileged, do not
constitute legal advice, and do not necessarily reflect the opinions
and policies of the ASF. See <http://www.apache.org/licenses/> for
official ASF policies and documents.
---------------------------------------------------------------------
To unsubscribe, e-mail: legal-discuss-unsubscribe@apache.org
For additional commands, e-mail: legal-discuss-help@apache.org
Re: Java 1.5 / 1.6 coexistence issues
Posted by Andrus Adamchik <aa...@apache.org>.
Ugh, stupid me, we have Harmony right here at Apache :-) Thanks Tim, I
will take a look, and ask questions if we can't figure it on our own.
Thanks,
Andrus
On Sep 29, 2008, at 11:28 AM, Tim Ellison wrote:
> Andrus Adamchik wrote:
>> We are trying to setup Cayenne ORM project structure to be both
>> buildable and runnable under Java 1.5 and 1.6. ("buildable" is
>> important
>> for non-64-bit Intel Mac users. There's no Java 6 for those older
>> Macs).
>>
>> The problem is that we are implementing a bunch of java[x].sql
>> interfaces in Cayenne that have changed between the versions of
>> Java. So
>> take for instance a class implementing java.sql.ResultSet. To be
>> able to
>> compile against 1.6 jars, we need methods like this:
>>
>> public java.sql.SQLXML getSQLXML(int) {...}
>>
>> Which does not compile against 1.5 jars. So what I am thinking is
>> building a small "JDBC4-compatibility" Maven module based on
>> OpenJDK (or
>> Sun JRE) that contains needed interfaces from java[x].sql packages.
>> It
>> will be done outside Apache. Then the plan to make it a Cayenne
>> "provided" dependency. I.e. it won't be shipped with Cayenne.
>>
>> Any licensing considerations with this approach?
>
> Just use Apache Harmony's implementations and you will not have any
> such
> problems.
>
> There is a Java 5 version [1] and Java 6 version [2] available. if
> you
> want help with a compile-against JAR come and talk on the dev list.
>
> [1]
> http://svn.apache.org/viewvc/harmony/enhanced/classlib/trunk/modules/sql/
> [2]
> http://svn.apache.org/viewvc/harmony/enhanced/classlib/branches/java6/modules/sql/
>
> Regards,
> Tim
>
> ---------------------------------------------------------------------
> DISCLAIMER: Discussions on this list are informational and educational
> only. Statements made on this list are not privileged, do not
> constitute legal advice, and do not necessarily reflect the opinions
> and policies of the ASF. See <http://www.apache.org/licenses/> for
> official ASF policies and documents.
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: legal-discuss-unsubscribe@apache.org
> For additional commands, e-mail: legal-discuss-help@apache.org
>
>
Re: Java 1.5 / 1.6 coexistence issues
Posted by Andrus Adamchik <aa...@apache.org>.
Ugh, stupid me, we have Harmony right here at Apache :-) Thanks Tim, I
will take a look, and ask questions if we can't figure it on our own.
Thanks,
Andrus
On Sep 29, 2008, at 11:28 AM, Tim Ellison wrote:
> Andrus Adamchik wrote:
>> We are trying to setup Cayenne ORM project structure to be both
>> buildable and runnable under Java 1.5 and 1.6. ("buildable" is
>> important
>> for non-64-bit Intel Mac users. There's no Java 6 for those older
>> Macs).
>>
>> The problem is that we are implementing a bunch of java[x].sql
>> interfaces in Cayenne that have changed between the versions of
>> Java. So
>> take for instance a class implementing java.sql.ResultSet. To be
>> able to
>> compile against 1.6 jars, we need methods like this:
>>
>> public java.sql.SQLXML getSQLXML(int) {...}
>>
>> Which does not compile against 1.5 jars. So what I am thinking is
>> building a small "JDBC4-compatibility" Maven module based on
>> OpenJDK (or
>> Sun JRE) that contains needed interfaces from java[x].sql packages.
>> It
>> will be done outside Apache. Then the plan to make it a Cayenne
>> "provided" dependency. I.e. it won't be shipped with Cayenne.
>>
>> Any licensing considerations with this approach?
>
> Just use Apache Harmony's implementations and you will not have any
> such
> problems.
>
> There is a Java 5 version [1] and Java 6 version [2] available. if
> you
> want help with a compile-against JAR come and talk on the dev list.
>
> [1]
> http://svn.apache.org/viewvc/harmony/enhanced/classlib/trunk/modules/sql/
> [2]
> http://svn.apache.org/viewvc/harmony/enhanced/classlib/branches/java6/modules/sql/
>
> Regards,
> Tim
>
> ---------------------------------------------------------------------
> DISCLAIMER: Discussions on this list are informational and educational
> only. Statements made on this list are not privileged, do not
> constitute legal advice, and do not necessarily reflect the opinions
> and policies of the ASF. See <http://www.apache.org/licenses/> for
> official ASF policies and documents.
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: legal-discuss-unsubscribe@apache.org
> For additional commands, e-mail: legal-discuss-help@apache.org
>
>
---------------------------------------------------------------------
DISCLAIMER: Discussions on this list are informational and educational
only. Statements made on this list are not privileged, do not
constitute legal advice, and do not necessarily reflect the opinions
and policies of the ASF. See <http://www.apache.org/licenses/> for
official ASF policies and documents.
---------------------------------------------------------------------
To unsubscribe, e-mail: legal-discuss-unsubscribe@apache.org
For additional commands, e-mail: legal-discuss-help@apache.org
Re: Java 1.5 / 1.6 coexistence issues
Posted by Tim Ellison <t....@gmail.com>.
Andrus Adamchik wrote:
> We are trying to setup Cayenne ORM project structure to be both
> buildable and runnable under Java 1.5 and 1.6. ("buildable" is important
> for non-64-bit Intel Mac users. There's no Java 6 for those older Macs).
>
> The problem is that we are implementing a bunch of java[x].sql
> interfaces in Cayenne that have changed between the versions of Java. So
> take for instance a class implementing java.sql.ResultSet. To be able to
> compile against 1.6 jars, we need methods like this:
>
> public java.sql.SQLXML getSQLXML(int) {...}
>
> Which does not compile against 1.5 jars. So what I am thinking is
> building a small "JDBC4-compatibility" Maven module based on OpenJDK (or
> Sun JRE) that contains needed interfaces from java[x].sql packages. It
> will be done outside Apache. Then the plan to make it a Cayenne
> "provided" dependency. I.e. it won't be shipped with Cayenne.
>
> Any licensing considerations with this approach?
Just use Apache Harmony's implementations and you will not have any such
problems.
There is a Java 5 version [1] and Java 6 version [2] available. if you
want help with a compile-against JAR come and talk on the dev list.
[1]
http://svn.apache.org/viewvc/harmony/enhanced/classlib/trunk/modules/sql/
[2]
http://svn.apache.org/viewvc/harmony/enhanced/classlib/branches/java6/modules/sql/
Regards,
Tim
---------------------------------------------------------------------
DISCLAIMER: Discussions on this list are informational and educational
only. Statements made on this list are not privileged, do not
constitute legal advice, and do not necessarily reflect the opinions
and policies of the ASF. See <http://www.apache.org/licenses/> for
official ASF policies and documents.
---------------------------------------------------------------------
To unsubscribe, e-mail: legal-discuss-unsubscribe@apache.org
For additional commands, e-mail: legal-discuss-help@apache.org