ScriptKotlinKnowledgeBaseInterpreter.java 文件源码

@Override
protected ScriptEngine createScriptEngine() {
    String scripEngineName = SCRIPT_ENGINE_NAME;
    ScriptEngine result = new ScriptEngineManager().getEngineByName(scripEngineName);

    Validate.isInstanceOf(Compilable.class, result, "ScriptingEngine %s doesn't implement Compilable", scripEngineName);
    Validate.isInstanceOf(Invocable.class, result, "ScriptingEngine %s doesn't implement Invocable", scripEngineName);

    KotlinConstants.PROCESSOR_CLASSES
            .forEach((interfaceClass, scriptClass) -> addImport(result, scriptClass, interfaceClass.getSimpleName()));
    addImport(result, KPlugin.class, Plugin.class.getSimpleName());

    // TODO The line below performs very slow in Kotlin
    eval(result, getStandardImportClasses().stream().map(cls -> "import " + cls.getName()).collect(Collectors.joining("\n")));

    setVariable(result, KnowledgeBaseConstants.VAR_ENGINE_OPERATIONS, getEngineOperations());

    return result;
}