A Lua-based AOP infrastructure

Abstract

In this paper we describe an aspect-oriented infrastructure to handle dynamic AOP based on the Lua language. This infrastructure is composed of AspectLua, a Lua extension that allows the declaration of aspects, and a meta-object protocol, LuaMOP, that unifies the introspective and reflective mechanisms provided by Lua. Aspects are defined in isolation using AspectLua and then they are weaved through LuaMOP. An important feature of AspectLua is to allow the association of aspects with undeclared elements of the application code (anticipated join points). Furthermore, it combines a range of features to make AOP easier and powerful.

The adaptation of GDL motion recognition system to sport and rehabilitation techniques analysis

“…Lua is used in scientific computing like linear algebra, neural networks, numeric optimization routines and many more [ 34 – 36 ]. Lua was also used in an aspect-oriented infrastructure to handle dynamic programming tasks [ 37 ]. Lua is also used in middleware design and development [ 38 , 39 ] also in robotics and embedded systems [ 40 – 43 ].…”

The art of the meta-aspect protocol

“…AspectManager am = AspectManager.getInstance() 4 MetaAspectManager mam = am.getMetaAspectManager(); 5 HashMap context = new HashMap(); 6 context.put("method", thisJoinPoint.getMethodName()); 7 context.put("args", thisJoinPoint.getArgs()); 8 context.put("targetObject", thisJoinPoint.getTarget()); 9 ... CallPCD. Any pointcut implements the method match that takes a JoinPoint object as a parameter; e.g., the implementation of this method in MethodCallPCD matches against instances of MethodCallJoinPoint, testing whether the pattern of the receiver pointcut object is satisfied.…”

“…Similarly, our println "#Debug breakpoint at '$jp'"; 5 println "#Pointcut under inspection = '${pc}'"; 6 println "#It matches " + (result? "yes" : "no"); 7 print "#Please select :(1) step over ,(2) step into , ...> "; 8 String input = System.in.readLine(); 9 ... // handle input option 10 return result; 11 } } Figure 11: A Meta-Aspect for Debugging MAP can be used to extend aspect composition semantics with debugging support for pointcuts.…”

“…This approach has been followed by Sullivan [43], AspectS [20,21], Lorenz and Kojarski [33,29], Composition Filters [3,4], Tanter [45], AspectLua [9], Aquarium [48], and GroovyAOP [22]. However none of the MOP-based solutions comes with a well-designed meta-aspect protocol to complement MOPs with a meta-interface that allows programmers to adapt the semantics of aspects.…”

Uma Estratégia baseada em Metamodelo para Geração de Código Orientado a Aspectos

“…A abordagem proposta visa permitir o mapeamento e navegação entre as atividades do ciclo de Desenvolvimento de Software Orientado a Aspectos, e a propagação de informações entre elas, definindo transformações dos artefatos da fase de projeto detalhado e codificação, através de regras de mapeamento. Para ilustrar a viabilidade da abordagem proposta em relação às atividades de projeto detalhado e codificação, foram escolhidas as linguagens aSideML [Chavez, 2004], uma linguagem de projeto detalhado orientada a aspectos, o Metaspin [Brichau et al, 2006] um modelo genérico para a codificação orientada a aspectos e a linguagem AspectLua [Cacho et al, 2005]. Portanto, o mapeamento entre projeto detalhado e código fonte é realizado através da especificação de transformações entre modelos aSideML e Metaspin e deste para a linguagem AspectLua.…”