capnproto
Questions about cross-language data exchange and Android support
There is a C++ native library I used for my Android app and it's able to provide data in Cap'n Proto. Naturally I want to utilize the ability to speed up the data exchanging, especially get data from C++ to Java/Kotlin, because common JNI object converting is really slow (ranges in ~40,000 µs to ~120,000 µs). So is there anyway to properly deal with this, like some Gradle plugins or any else example?
Yes, you should be able to compile your .capnp schemas with capnpc-java and then use the capnproto-java runtime library. The Addressbook example shows one way to set up a pom.xml to achieve this: https://github.com/capnproto/capnproto-java/blob/ed9a67c5fcd46604a88593625a9e38496b83d3ab/examples/pom.xml#L52-L71
There is also this maven plugin (but I've never used it): https://github.com/expretio/capnp-maven-plugin
One annoying bit about all this is that capnpc-java is still written in C++: #111
