@Override
public AnalysisResult analyse(TestSuiteResult originalResults) {
// Get normal results
AnalysisResult result = new AnalysisResult();
// Build map of changed tables
this.changedTableMap = new HashMap<>();
executor = Executors.newFixedThreadPool(4);
for (int id = 0; id < mutants.size(); id++) {
Mutant<Schema> mutant = mutants.get(id);
executor.submit(new ChangedTableTask(changedTableMap, id, mutant));
}
executor.shutdown();
try {
executor.awaitTermination(1, TimeUnit.DAYS);
} catch (InterruptedException ex) {
throw new RuntimeException(ex);
}
// Build the meta-mutant schema and SQL statements
Schema metamutant = MutationAnalysisUtils.mergeMutantsParallel(schema, mutants);
createStmts = sqlWriter.writeCreateTableStatements(metamutant);
dropStmts = sqlWriter.writeDropTableStatements(metamutant, true);
deleteStmts = sqlWriter.writeDeleteFromTableStatements(metamutant);
// Build map of results
this.resultMap = new HashMap<>();
for (int i = 0; i < mutants.size(); i++) {
resultMap.put(i, new TestSuiteResult());
}
// Execute test suite
executeDropStmts(databaseInteractor);
executeCreateStmts(databaseInteractor);
for (TestCase testCase : testSuite.getTestCases()) {
executeDeleteStmts(databaseInteractor);
TestCaseResult normalTestResult = null;
Map<Integer, TestCaseResult> failedMutants = new HashMap<>();
Data data = testCase.getState();
normalTestResult = executeInserts(data, normalTestResult, failedMutants, testCase);
data = testCase.getData();
normalTestResult = executeInserts(data, normalTestResult, failedMutants, testCase);
if (normalTestResult == null) {
for (int i = 0; i < mutants.size(); i++) {
if (!failedMutants.containsKey(i)) {
resultMap.get(i).add(testCase, TestCaseResult.SuccessfulTestCaseResult);
}
}
}
}
// Build the TestSuiteResult objects
for (int i = 0; i < mutants.size(); i++) {
TestSuiteResult mutantResult = resultMap.get(i);
if (!originalResults.equals(mutantResult)) {
result.addKilled(mutants.get(i));
} else {
result.addLive(mutants.get(i));
}
}
executeDropStmts(databaseInteractor);
return result;
}
@Override
public void task() {
// Setup
if (inputfolder == null) {
inputfolder =
locationsConfiguration.getResultsDir()
+ File.separator
+ "generatedresults"
+ File.separator;
}
if (outputfolder == null) {
outputfolder = locationsConfiguration.getResultsDir() + File.separator;
}
// Start results file
CSVResult result = new CSVResult();
result.addValue("technique", this.getClass().getSimpleName());
result.addValue("dbms", databaseConfiguration.getDbms());
result.addValue("casestudy", casestudy);
result.addValue("trial", trial);
// Instantiate the DBMS and related objects
DBMS dbms = DBMSFactory.instantiate(databaseConfiguration.getDbms());
SQLWriter sqlWriter = dbms.getSQLWriter();
DatabaseInteractor databaseInteractor =
dbms.getDatabaseInteractor(casestudy, databaseConfiguration, locationsConfiguration);
if (databaseInteractor.getTableCount() != 0) {
LOGGER.log(
Level.SEVERE,
"Potential dirty database detected: technique={0}, casestudy={1}, trial={2}",
new Object[] {this.getClass().getSimpleName(), casestudy, trial});
}
// Get the required schema class
Schema schema;
try {
schema = (Schema) Class.forName(casestudy).newInstance();
} catch (ClassNotFoundException | IllegalAccessException | InstantiationException ex) {
throw new RuntimeException(ex);
}
// Load the SQLExecutionReport for the non-mutated schema
String reportPath = inputfolder + casestudy + ".xml";
SQLExecutionReport originalReport = XMLSerialiser.load(reportPath);
// Start mutation timing
ExperimentTimer timer = new ExperimentTimer();
timer.start(ExperimentTimer.TimingPoint.TOTAL_TIME);
// Get the mutation pipeline and generate mutants
timer.start(ExperimentTimer.TimingPoint.MUTATION_TIME);
MutationPipeline<Schema> pipeline;
try {
pipeline =
MutationPipelineFactory.<Schema>instantiate(
mutationPipeline, schema, databaseConfiguration.getDbms());
} catch (ClassNotFoundException
| InstantiationException
| IllegalAccessException
| InvocationTargetException
| NoSuchMethodException ex) {
throw new RuntimeException(ex);
}
List<Mutant<Schema>> mutants = pipeline.mutate();
timer.stop(ExperimentTimer.TimingPoint.MUTATION_TIME);
// Schemata step: Rename the mutants
renameMutants(mutants);
// Schemata step: Build single drop statement
timer.start(ExperimentTimer.TimingPoint.DROPS_TIME);
StringBuilder dropBuilder = new StringBuilder();
for (Mutant<Schema> mutant : mutants) {
Schema mutantSchema = mutant.getMutatedArtefact();
for (String statement : sqlWriter.writeDropTableStatements(mutantSchema, true)) {
dropBuilder.append(statement);
dropBuilder.append("; ");
dropBuilder.append(System.lineSeparator());
}
}
String dropStmt = dropBuilder.toString();
timer.stop(ExperimentTimer.TimingPoint.DROPS_TIME);
// Schemata step: Build single create statement
timer.start(ExperimentTimer.TimingPoint.CREATES_TIME);
StringBuilder createBuilder = new StringBuilder();
for (Mutant<Schema> mutant : mutants) {
Schema mutantSchema = mutant.getMutatedArtefact();
for (String statement : sqlWriter.writeCreateTableStatements(mutantSchema)) {
createBuilder.append(statement);
createBuilder.append("; ");
createBuilder.append(System.lineSeparator());
}
}
String createStmt = createBuilder.toString();
timer.stop(ExperimentTimer.TimingPoint.CREATES_TIME);
// Schemata step: Drop existing tables before iterating mutants
timer.start(ExperimentTimer.TimingPoint.DROPS_TIME);
if (dropfirst) {
databaseInteractor.executeUpdate(dropStmt);
}
timer.stop(ExperimentTimer.TimingPoint.DROPS_TIME);
// Schemata step: Create table before iterating mutants
timer.start(ExperimentTimer.TimingPoint.CREATES_TIME);
Integer res = databaseInteractor.executeUpdate(createStmt);
boolean quasiSchema = false;
if (res.intValue() == -1) {
quasiSchema = true;
}
timer.stop(ExperimentTimer.TimingPoint.CREATES_TIME);
// Only do mutation analysis if the schema is valid
int killed = 0;
if (!quasiSchema) {
// Begin mutation analysis
for (int id = 0; id < mutants.size(); id++) {
Schema mutant = mutants.get(id).getMutatedArtefact();
LOGGER.log(Level.INFO, "Mutant {0}", id);
// Schemata step: Generate insert prefix string
String schemataPrefix = "INSERT INTO mutant_" + (id + 1) + "_";
// Insert the test data
timer.start(ExperimentTimer.TimingPoint.INSERTS_TIME);
List<SQLInsertRecord> insertStmts = originalReport.getInsertStatements();
ArrayList<String> groupedStatements = new ArrayList<>();
for (SQLInsertRecord insertRecord : insertStmts) {
// Schemata step: Rewrite insert for mutant ID
String insertStmt =
insertRecord.getStatement().replaceAll("INSERT INTO ", schemataPrefix);
if (insertRecord.isSatisfying()) {
groupedStatements.add(insertStmt);
} else {
if (!groupedStatements.isEmpty()) {
int returnCount = databaseInteractor.executeUpdatesAsTransaction(groupedStatements);
groupedStatements.clear();
if (returnCount == 0) {
killed++;
break;
}
}
int returnCount = databaseInteractor.executeUpdate(insertStmt);
if (returnCount != insertRecord.getReturnCode()) {
killed++;
break; // Stop once killed
}
}
}
if (!groupedStatements.isEmpty()) {
int returnCount = databaseInteractor.executeUpdatesAsTransaction(groupedStatements);
groupedStatements.clear();
if (returnCount == 0) {
killed++;
}
}
timer.stop(ExperimentTimer.TimingPoint.INSERTS_TIME);
}
}
// Schemata step: Drop tables after iterating mutants
timer.start(ExperimentTimer.TimingPoint.DROPS_TIME);
databaseInteractor.executeUpdate(dropStmt);
timer.stop(ExperimentTimer.TimingPoint.DROPS_TIME);
timer.stopAll();
timer.finalise();
result.addValue("scorenumerator", (!quasiSchema) ? killed : mutants.size());
result.addValue("scoredenominator", mutants.size());
result.addValue("mutationpipeline", mutationPipeline.replaceAll(",", "|"));
result.addValue("threads", 1);
result.addValue("totaltime", timer.getTime(ExperimentTimer.TimingPoint.TOTAL_TIME));
result.addValue("dropstime", timer.getTime(ExperimentTimer.TimingPoint.DROPS_TIME));
result.addValue("createstime", timer.getTime(ExperimentTimer.TimingPoint.CREATES_TIME));
result.addValue("insertstime", timer.getTime(ExperimentTimer.TimingPoint.INSERTS_TIME));
result.addValue("mutationtime", timer.getTime(ExperimentTimer.TimingPoint.MUTATION_TIME));
result.addValue("paralleltime", timer.getTime(ExperimentTimer.TimingPoint.PARALLEL_TIME));
if (resultsToFile) {
if (resultsToOneFile) {
new CSVFileWriter(outputfolder + "mutationanalysis.dat").write(result);
} else {
new CSVFileWriter(outputfolder + casestudy + ".dat").write(result);
}
}
if (resultsToDatabase) {
new CSVDatabaseWriter(databaseConfiguration, new ExperimentConfiguration()).write(result);
}
}