Re: [opendds-devel] OpenDDS 1.2 Java Qos

[Ethem A. <ea...@gm...>]

Thank you Adam, now it runs well.

2009/1/19 Adam Mitz <mi...@oc...>

> Hi Ethem,
>
> Ethem Arkın wrote:
>
>>
>> In C++ I already used get_default_datawriter_qos.
>> Then in Java I need to initialize all qos policy structs in DataWriterQos
>> before calling get_default_datawriter_qos, right?
>>
> What you need to do is to make the DataWriterQos a "complete" object graph,
> with no null Java references to IDL structs (a nested IDL struct can never
> be null, it just doesn't make sense in IDL).
>
>  I can not initialize "kind" structs, because these are enumaration types
>> and don't have constructors.
>>
>
> For enums like DurabilityQosPolicyKind, you can use the named constants
> like DurabilityQosPolicyKind.VOLATILE_DURABILITY_QOS (which value you pick
> doesn't matter).  These work a lot like Java 5 enums.
>
>  And I couldn't figure out the size for "user_data.value".
>>
> IDL sequences map to Java arrays.  You can pass a zero-length Java array,
> but not a null reference to a Java array.
>
> My colleague Steve Stallion will also be posting a reference to some
> example code that handles all of this.
>
>
> Thanks,
> Adam Mitz
> Senior Software Engineer
> Object Computing, Inc.
>
>