[jboss-jira] [JBoss JIRA] (DROOLS-3112) FEEL Compiler: modularize FEELImpl compiler/interpreter vs. DMNFEELHelper

[Edoardo Vacchi (Jira)]

     [ https://issues.jboss.org/browse/DROOLS-3112?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Edoardo Vacchi updated DROOLS-3112:
-----------------------------------
    Sprint: 2018 Week 42-44


> FEEL Compiler: modularize FEELImpl compiler/interpreter vs. DMNFEELHelper 
> --------------------------------------------------------------------------
>
>                 Key: DROOLS-3112
>                 URL: https://issues.jboss.org/browse/DROOLS-3112
>             Project: Drools
>          Issue Type: Enhancement
>            Reporter: Edoardo Vacchi
>            Assignee: Edoardo Vacchi
>            Priority: Major
>              Labels: drools-core
>
> Code in FEELImpl could be reused in the DMNFEELHelper, but it cannot be shared, because FEELImpl exposes an interface to evaluate expressions, while DMNFEELHelper needs access to the compiler backend.
> Solution: separate the compilation pipeline and the interpreter pipeline from the public FEEL interface to promote code reuse. In particular, CompilerBytecodeLoader can be probably split between some kind of CompiledUnit+CompiledUnaryTest impls that provide methods to retrieve Java source code and/or JVM bytecode.



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