On Wed, Apr 15, 2015 at 10:57 AM, Yolanda Septiana 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 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@lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users

_______________________________________________ Boost-users mailing list Boost-users@lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users

On Wed, Apr 15, 2015 at 2:32 PM, Damien wrote:

On 2015-04-15 12:23 PM, Michael Powell wrote:

...

On Wed, Apr 15, 2015 at 10:57 AM, Yolanda Septiana 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 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@lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users

_______________________________________________ Boost-users mailing list Boost-users@lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users

_______________________________________________ Boost-users mailing list Boost-users@lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users

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@lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users

Yes Nat, I think I'll end up doing that. Thanks Michael, I know that there is jGraphT but I haven't got a look into it. I was just asking around first. I'll definitely give that a try. Thank you all for the help. On Thu, Apr 16, 2015, 4:12 AM Nat Goodspeed wrote:

On Wed, Apr 15, 2015 at 10:57 AM, Yolanda Septiana wrote:

...

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.

I'm not sure if this is what you said above, but another possibility would be:

* Write your graph data to one or more files. * Write code to cause the Java program to execute a C++ program and wait for it to finish. * Write a C++ program to read those files and use Boost.Graph, or whatever, to process them. * Write the C++ program output to another file. * Read the results file back into the Java program.

That might be more straightforward than trying to pass all your graph data back and forth across the language boundary. _______________________________________________ Boost-users mailing list Boost-users@lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users