Re: [Boost-users] Possible to use with JNI?

Subject: Re: [Boost-users] Possible to use with JNI?
From: Michael Powell (mwpowellhtx_at_[hidden])
Date: 2015-04-15 15:27:13

On Wed, Apr 15, 2015 at 2:32 PM, Damien <damien_at_[hidden]> wrote:
> On 2015-04-15 12:23 PM, Michael Powell wrote:
>>
>> On Wed, Apr 15, 2015 at 10:57 AM, Yolanda Septiana <yolapopop_at_[hidden]>
>> wrote:
>>>
>>> Ah... I'm really lost here. The reason that I want to use Boost with Java
>>> is
>>> because I found that:
>>> The original VF2lib (ported from C to Java) is somehow slower than Boost.
>>> I
>>> checked by trying to find subgraph isomorphism between graph A (10 nodes)
>>> and graph B (500 nodes). VF2lib took longer than 5 minutes but Boost was
>>> just some milliseconds.
>>> (If someone can verify that I'll be really grateful).
>>>
>>> So what option do I have to be able to use Boost? I think I should a file
>>> based graph generated by Java and process them with Boost.
>>>
>>>
>>> On Wed, Apr 15, 2015, 9:30 PM Lorenzo Trivelli
>>> <trivelli.lorenzo_at_[hidden]> wrote:
>>>>
>>>> At 06:30 13/04/2015, you wrote:
>>>>>
>>>>> Hi, I really need to use Java with this library. Is it possible to use
>>>>> JNI on this library or do I need to convert this library to Java? I
>>>>> find the
>>>>> latter task is going to be really difficult so I hope that I can use
>>>>> JNI.
>>>>>
>>>>> Thank you for your help.
>>>>
>>>> Hi, AFAIK it is not easy to do that due to C++ name mangling and
>>>> the absence of any ABI in C++ itself like C
>>>>
>>>> A possible but limited workaround should be to create a DLL with a C
>>>> interface
>>>> which uses the boost objects you need. Next, you can call it through
>>>> JNI,
>>>> but obviously you can pass only basic data types
>>
>> The expert opinion is that you should be able to develop a DLL with C
>> interface, and leverage the Boost/C++ behind the C API. You'll need to
>> know  the data types translations between the two, but this should be
>> readily documented, or for the most part more or less discoverable.
>>
>>>> regardds
>>>> Lorenzo
>>>>
>>>> _______________________________________________
>>>> Boost-users mailing list
>>>> Boost-users_at_[hidden]
>>>> http://lists.boost.org/mailman/listinfo.cgi/boost-users
>>>
>>>
>>> _______________________________________________
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>>
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>
>
> If you want to use a Java lib and save some interface pain, it might be
> worth checking this out:
>
> http://stackoverflow.com/questions/51574/good-java-graph-algorithm-library

I was stopping just short of fishing for her. "You can given a man a
fish, he has a meal..."

In Christ.

> Damien
>
> _______________________________________________
> Boost-users mailing list
> Boost-users_at_[hidden]
> http://lists.boost.org/mailman/listinfo.cgi/boost-users