Stateful functions and modules

[danp]

Hi, 

What is the preferred way to expose functions (FunctionTypes) between modules?

For example lets say i have the following maven modules:

-> common

-> statistics

-> persister

-> tradematching

and I have some FunctionTypes in common and persister module that should be reach

from all modules.

common module is included everywhere so I thought about creating 

a helper class, CallableFunctions, and there specify the FunctionTypes that can 

be called from all modules. Is this the right approach or is there a better way?

Regards

Dan

[Igal Shilman]

Hi Dan,

Having a class that defines only the function types indeed makes sense, this would lower the coupling between the (maven) module that contains the function implementation and the (maven) module that uses it. 

You can peek here for example: 

https://github.com/ververica/stateful-functions/blob/master/stateful-functions-examples/stateful-functions-shopping-cart-example/src/main/java/com/ververica/statefun/examples/shoppingcart/Identifiers.java#L28

Igal.

On Saturday, January 4, 2020, Dan Pettersson <[hidden email]> wrote:

Hi, 

What is the preferred way to expose functions (FunctionTypes) between modules?

For example lets say i have the following maven modules:

-> common

-> statistics

-> persister

-> tradematching

and I have some FunctionTypes in common and persister module that should be reach

from all modules.

common module is included everywhere so I thought about creating 

a helper class, CallableFunctions, and there specify the FunctionTypes that can 

be called from all modules. Is this the right approach or is there a better way?

Regards

Dan

[danp]

Ok, good. Thanks for your response.

/Dan

Den sön 5 jan. 2020 11:52Igal Shilman <[hidden email]> skrev:

Hi Dan,

Having a class that defines only the function types indeed makes sense, this would lower the coupling between the (maven) module that contains the function implementation and the (maven) module that uses it. 

You can peek here for example: 

https://github.com/ververica/stateful-functions/blob/master/stateful-functions-examples/stateful-functions-shopping-cart-example/src/main/java/com/ververica/statefun/examples/shoppingcart/Identifiers.java#L28

Igal.

On Saturday, January 4, 2020, Dan Pettersson <[hidden email]> wrote:

Hi, 

What is the preferred way to expose functions (FunctionTypes) between modules?

For example lets say i have the following maven modules:

-> common

-> statistics

-> persister

-> tradematching

and I have some FunctionTypes in common and persister module that should be reach

from all modules.

common module is included everywhere so I thought about creating 

a helper class, CallableFunctions, and there specify the FunctionTypes that can 

be called from all modules. Is this the right approach or is there a better way?

Regards

Dan