The parameter could be also a class that extend
org.h2.api.JavaObjectSerializer however it would be not as flexible as
extending 'org.h2.value.Value'
Le mercredi 15 mai 2013 16:54:46 UTC+2, Nicolas Fortin (OrbisGIS) a écrit :
>
> Hi,
>
> I succeed on creating an IntelliJ project for H2, then it is easier to me
> to to dev in H2.
>
> I have some issues with h2 java object field, after serialization the
> object size overhead is too high. I think about extending the OTHER type
> this way :
> CREATE DOMAIN Geometry AS OTHER('org.h2spatial.ValueGeometry.FromBytes');
>
> The optional parameter is a static method that return a class that extends
> 'org.h2.value.Value' in order to convert byte[] array into the appropriate
> field object.
>
> What do you think about this solution ?
>
> -Nicolas
>
> Le mardi 16 avril 2013 17:13:06 UTC+2, Nicolas Fortin (OrbisGIS) a écrit :
>>
>> Hi,
>>
>> I'm a team member of GIS working group at IRSTV. My next task is to
>> cleanly incorporate spatial analysis into or onto H2. Our project
>> repository is here https://github.com/irstv/H2GIS.
>>
>> Currently I'm trying to learn as most as I can of H2 and all other H2
>> spatial projects.
>>
>> Using custom datatype and functions through "CREATE DOMAIN" and "CREATE
>> ALIAS" leads to call theses functions to all new local H2 DataBase and
>> existing H2 DataBase connection with admin rights..
>>
>> I think about creating a custom Driver for spatial
>> ex:"org.h2spatial.Driver" then catch admin connection on local h2 DataBase,
>> but it must not be a great idea ?
>>
>> You were talking about MVStore and custom data type (de)serialisation,
>> but I don't find samples, and I don't find a way to feed a Class or object
>> factory. But anyway it seems that this storage is not yet used in H2. May
>> be I should work on the snapshot release ?
>>
>> Final words are, what do you think is the best strategy ? Working with
>> you on the trunk to incorporate h2 spatial in native or continue to stick
>> with version 1.3.171 and build a overloaded Driver for spatial purposes ?
>>
>> Thank you for your support
>>
>>
>>
>>
>>
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