anATLyzer

Advanced analysis of ATL transformations

Quick fixes

Support for quick fixes has been added to Anatlyzer. This page provides information about this and the detailed and updated results of our experiments.

Quick fixes in the ATL editor

To enable quick fixes in the ATL editor, anatlyzer must be activated. Please, follow the installation instructions and the user guide.

Given a problem reported in the Problem View or in the Analysis View, the quick fix proposals can be generated in three ways.

Screencast

Experiment results

We have evaluated our quick fixes by generating mutants of four transformations in order to create a wide range of problems. Then, we use our speculative analysis to check whether each quick fix actually solves its targeted problem and its impact (i.e., which new problems produces or fixes as a side-effect).

Input: Mutated transformation T
Step 0: Run the static analyser on T, obtaining its list of problems Lp
Step 1: Confirm or discard potential problems by finding a model witness
        If discarded, remove problem from Lp
Step 2: Foreach P in Lp
           Retrieve the set of available quick fixes for P
           Foreach applicable quick fix Q
              Discard quick fix if it requires user intervention
              Count Q as applicable for the problem type of P
              Apply Q on T speculatively
                 Copy T into Tq
                 Apply Q on Tq
                 Run the static analyser on Tq
                 Confirm or discard problems for Tq, as in step 1
              Compute the impact obtaining fixedProblems 
                 and newProblems
              If P belongs to newProblems
                 Mark the application of Q as valid

This script has been carried out using a custom-made facility to automatically process transformations and meta-models and export the results in textual form or in Excel format. The detailed results and the data to replicate the experiments are available in the following files.

The anatlyzer.evaluation.quickfixes.sosym2015 project includes four .exp files to easily run the experiments. For example, open ant2maven.exp, select the Result tab, and press Execute. After a few minutes, the results will appear in the text editor and can be exported to Excel. The experiments may take between 10 minutes and 60 minutes.

To run the experiments Eclipse must be configured to run with a heap space of at least 4 GB. You must change eclipse.ini adding -Xms2048m -Xmx4096m.