using protected methods in Caffe

[robertnishihara]

Hi, I'd like to do something like the following:

import org.bytedeco.javacpp.caffe._

class CaffeSolver(solverParam: SolverParameter) extends FloatSGDSolver(solverParam) {
    super.ApplyUpdate()
}

ApplyUpdate is a protected method in Caffe's SGDSolver class (link to Caffe code). However, ApplyUpdate and the other protected methods do not appear in the FloatSGDSolver class in caffe.java. Would it be possible to wrap those methods as well?

As a short-term fix, I tried the following:

(1) Edit caffe.java by inserting the line

@Virtual protected native void ApplyUpdate();

in the FloatSGDSolver class.
(2) Set generate-sources.skip to true in javacpp-presets/pom.xml.
(3) Run mvn install --projects .,opencv,caffe.

However in step (3), I ran into a bunch of errors along the lines of

/root/javacpp-presets/caffe/target/classes/org/bytedeco/javacpp/jnicaffe.cpp:1889:5: error: ‘JavaCPP__0003a_0003acaffe_0003a_0003aSGDSolver_0003cdouble_0003e::JavaCPP__0003a_0003acaffe_0003a_0003aSGDSolver_0003cdouble_0003e(std::string&)’ cannot be overloaded
     JavaCPP__0003a_0003acaffe_0003a_0003aSGDSolver_0003cdouble_0003e(std::string& arg0) : ::caffe::SGDSolver<double>(arg0), obj(NULL) { }
     ^

Any help/advice would be appreciated. Thanks!

[saudet]

Should be fixed in with the commits above! Thanks for reporting!

[robertnishihara]

After rebuilding javacpp and javacpp-presets, this seems to work for me. Thanks a lot! Do you have any estimate for when this will be included in the binary release?

[saudet]

Next release? Probably around April.... It would go a lot easier if we had a CI server for that though... We could also upload SNAPSHOT binaries for now, good enough?

[robertnishihara]

Do you mean upload them to the central maven repository? If so, that'd certainly work.

[saudet]

Well here https://oss.sonatype.org/content/repositories/snapshots/org/bytedeco/?

[robertnishihara]

Thanks! I'll actually put them up myself in a temporary location, which should be good enough for now.

[saudet]

Fix included in newly released version 1.2. Thanks for reporting!