Show HN: GoJava – Server/desktop Java bindings to Go packages (opens in new tab)

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52 pointsvendakka10y ago14 comments

14 comments

I'm looking forward to when this exists for every almost language. Go added "c-archive" build mode in 1.5. There is no reason gobind couldn't support any language which can work with c libraries (ruby, node, etc).

vendakkaOP10y ago

This exists for Python [0]. The reverse is also interesting (Go -> Java/Python/Ruby) and once I get some spare time, I'll play around with using libjvm to load and call jar files from Go.

[0] https://github.com/go-python/gopy

rhodysurf10y ago

Its awesome. The problem is that only specific types are supported by a bunch of these types of libraries. In the case of gopy you cannot do anything with a nested slices in structs which limits things a bit.

1 more reply

namelezz10y ago

Since GoJava generates jar binding, does it mean other JVM languages can use the jar to call Go too?

Edit: Java has generic Go doesn't, how do the bindings work for generic?

vendakkaOP10y ago

Regarding generics: the tool generates Java bindings from Go code. Since Go doesn't have generics we just generate non-generic bindings.

vendakkaOP10y ago

Yes. The only constraint is that the jar will only work on the architecture it was built on.

meddlepal10y ago

Still pretty awesome and that's not really a big deal. I'm going to guess most Java these days is running on x86_64 or ARM.

pookeh10y ago

Yes

_JamesA_10y ago

Go would benefit immensely from the ability to bind to JDBC drivers for database access.

dguaraglia10y ago

What makes you think so? Go has pretty solid native drivers for most SQL databases out there: https://github.com/golang/go/wiki/SQLDrivers

alpb10y ago

In case the author sees this, more documentation would be great.

vendakkaOP10y ago

Yup. I'll put together some more docs and usage examples this weekend.

Edit: https://github.com/sridharv/gojava/issues/6

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14 comments

scosman10y ago

vendakkaOP10y ago

This exists for Python [0]. The reverse is also interesting (Go -> Java/Python/Ruby) and once I get some spare time, I'll play around with using libjvm to load and call jar files from Go.

[0] https://github.com/go-python/gopy

rhodysurf10y ago

1 more reply

namelezz10y ago

Since GoJava generates jar binding, does it mean other JVM languages can use the jar to call Go too?

Edit: Java has generic Go doesn't, how do the bindings work for generic?

vendakkaOP10y ago

Regarding generics: the tool generates Java bindings from Go code. Since Go doesn't have generics we just generate non-generic bindings.

vendakkaOP10y ago

Yes. The only constraint is that the jar will only work on the architecture it was built on.

meddlepal10y ago

Still pretty awesome and that's not really a big deal. I'm going to guess most Java these days is running on x86_64 or ARM.

pookeh10y ago

Yes

_JamesA_10y ago

Go would benefit immensely from the ability to bind to JDBC drivers for database access.

dguaraglia10y ago

What makes you think so? Go has pretty solid native drivers for most SQL databases out there: https://github.com/golang/go/wiki/SQLDrivers

alpb10y ago

In case the author sees this, more documentation would be great.

vendakkaOP10y ago

Yup. I'll put together some more docs and usage examples this weekend.

Edit: https://github.com/sridharv/gojava/issues/6

j / k navigate · click thread line to collapse