Java 类org.aspectj.lang.reflect.ConstructorSignature 实例源码

@Around("execution((@net.sf.oval.guard.Guarded *).new(..))")
public Object allConstructors(final ProceedingJoinPoint thisJoinPoint) throws Throwable {
    final ConstructorSignature signature = (ConstructorSignature) thisJoinPoint.getSignature();

    LOG.debug("aroundConstructor() {1}", signature);

    final Constructor<?> ctor = signature.getConstructor();
    final Object[] args = thisJoinPoint.getArgs();
    final Object target = thisJoinPoint.getTarget();

    // pre conditions
    {
        guard.guardConstructorPre(target, ctor, args);
    }

    final Object result = thisJoinPoint.proceed();

    // post conditions
    {
        guard.guardConstructorPost(target, ctor, args);
    }

    return result;
}

private static Annotation getAnnotation(final Signature signature,
                            final Class<? extends Annotation> annotationClass) {
    if (signature instanceof ConstructorSignature) {
        final Constructor<?> ctor = ConstructorSignature.class.cast(signature)
                                .getConstructor();
        return ctor.getAnnotation(annotationClass);
    } else if (signature instanceof MethodSignature) {
        return MethodSignature.class.cast(signature)
                .getMethod()
                .getAnnotation(annotationClass);
    } else if (signature instanceof FieldSignature) {
        return FieldSignature.class.cast(signature)
                .getField()
                .getAnnotation(annotationClass);
    }

    throw new RuntimeException(
            "Unsupported signature type " + signature.getClass().getName()
        );
}

@Test
public void createByDefaultConstructor() throws Exception {
    // act / when
    final InitializationTestFixture testFixture = new InitializationTestFixture();

    // assert / then
    assertJoinPoint(new AdditionalAssert() {
        @Override
        public void additionalAssert(final JoinPoint joinPoint, final String thisContext, final String targetContext) {
            assertThat("This?", joinPoint.getThis(), sameInstance((Object) testFixture));
            assertThat("Target?", joinPoint.getTarget(), sameInstance((Object) testFixture));
            assertThat("#Arguments?", joinPoint.getArgs().length, is(0));
            assertThat("This context?", thisContext, is("InitializationTestFixture{anyValue='default'}"));
            assertThat("Target context?", targetContext, is("InitializationTestFixture{anyValue='default'}"));
            assertThat("Constructor?", ((ConstructorSignature)joinPoint.getSignature()).getConstructor().toString(),
                    is("public eval.org.aspectj.lang.fixture.InitializationTestFixture()"));
        }
    });
}

@Test
public void createByConstructorWithParameter() throws Exception {
    // act / when
    final InitializationTestFixture testFixture = new InitializationTestFixture("MY_VALUE");

    // assert / then
    assertJoinPoint(new AdditionalAssert() {
        @Override
        public void additionalAssert(final JoinPoint joinPoint, final String thisContext, final String targetContext) {
            assertThat("This?", joinPoint.getThis(), sameInstance((Object) testFixture));
            assertThat("Target?", joinPoint.getTarget(), sameInstance((Object) testFixture));
            assertThat("#Arguments?", joinPoint.getArgs().length, is(1));
            assertThat("Argument value?", joinPoint.getArgs()[0], is((Object)"MY_VALUE"));
            assertThat("This context?", thisContext, is("InitializationTestFixture{anyValue='MY_VALUE'}"));
            assertThat("Target context?", targetContext, is("InitializationTestFixture{anyValue='MY_VALUE'}"));
            assertThat("Constructor?", ((ConstructorSignature)joinPoint.getSignature()).getConstructor().toString(),
                    is("public eval.org.aspectj.lang.fixture.InitializationTestFixture(java.lang.String)"));
        }
    });
}

@Test
public void createByDefaultConstructor() throws Exception {
    // act / when
    final PreInitializationTestFixture testFixture=new PreInitializationTestFixture();

    // assert / then
    assertJoinPoint(new AdditionalAssert() {
        @Override
        public void additionalAssert(final JoinPoint joinPoint, final String thisContext, final String targetContext) {
            assertThat("This?", joinPoint.getThis(), nullValue());
            assertThat("Target?", joinPoint.getTarget(), nullValue());
            assertThat("#Arguments?", joinPoint.getArgs().length, is(0));
            assertThat("Constructor?", ((ConstructorSignature)joinPoint.getSignature()).getConstructor().toString(),
                    is("public eval.org.aspectj.lang.fixture.PreInitializationTestFixture()"));
        }
    });
}

@Test
public void createByConstructorWithParameter() throws Exception {
    // act / when
    final PreInitializationTestFixture testFixture=new PreInitializationTestFixture("MY_VALUE");

    // assert / then
    assertJoinPoint(new AdditionalAssert() {
        @Override
        public void additionalAssert(final JoinPoint joinPoint, final String thisContext, final String targetContext) {
            assertThat("This?", joinPoint.getThis(), nullValue());
            assertThat("Target?", joinPoint.getTarget(), nullValue());
            assertThat("#Arguments?", joinPoint.getArgs().length, is(1));
            assertThat("Argument value?", joinPoint.getArgs()[0], is((Object) "MY_VALUE"));
            assertThat("Constructor?", ((ConstructorSignature)joinPoint.getSignature()).getConstructor().toString(),
                    is("public eval.org.aspectj.lang.fixture.PreInitializationTestFixture(java.lang.String)"));
        }
    });
}

/**
 * Generate traces and gather statistics on a method.
 * 
 * @param point The proceeding join point.
 * @param gatherSizeLevel Logging level at which the returned value of the function should be measured.
 * @param secure Is the method secure ? If so, both the arguments and the return value will be masked.
 * @param trace Is trace enabled ? If it is, an exit trace will be printed if the logger bound to the class name is
 *            enabled at the FINE level. An entry log will be generated if the logger is enabled at the FINER level.
 * @return The join point returned value.
 * @throws Throwable If the join point throws an exception.
 */
public static Object traceAndMeasureConstructorJoinPoint( ProceedingJoinPoint point, Level gatherSizeLevel, boolean secure, boolean trace ) throws Throwable {
    ConstructorSignature methodSignature = ConstructorSignature.class.cast( point.getSignature() );
    Constructor<?> method = methodSignature.getConstructor();
    String opName = method.toString();

    Logger logger = null;
    if ( trace ) {
        logger = getLoggerByName( method.getDeclaringClass().getName() );
    }

    OperationMetric metric = initializeConstructorMetricIfEnabled( point, secure, logger, method, opName );

    return traceAndMeasureJoinPointWithLogger( point, gatherSizeLevel, secure, metric, opName, logger, true, method );
}

/**
 * Helper that returns all {@link java.lang.annotation.Annotation}s of the given call joint point needed for the
 * CostHat UseCase
 * 
 * @return list of all {@link java.lang.annotation.Annotation}
 */
private List<java.lang.annotation.Annotation> getAnnotations() {
  Signature signature = getSignature();
  if (signature instanceof MethodSignature) {
    return Arrays.asList(((MethodSignature) getSignature()).getMethod().getAnnotations());
  }
  else if (signature instanceof ConstructorSignature) {
    return Arrays.asList(((ConstructorSignature) getSignature()).getConstructor().getAnnotations());
  }
  return Lists.newArrayList();
}

private Signature createConstructorSignatureMock(Class<?>... parameterClasses) {
    final ConstructorSignature constructorSignature = mock(ConstructorSignature.class);
    when(constructorSignature.getConstructor()).thenReturn(resolveConstructor(parameterClasses));

    LOGGER.debug("ConstructorSignature Mock - getConstructor() = {}", constructorSignature.getConstructor());

    return constructorSignature;
}

/**
 * Validate arguments of constructor.
 *
 * <p>Try NOT to change the signature of this method, in order to keep
 * it backward compatible.
 *
 * @param point Join point
 * @checkstyle LineLength (3 lines)
 */
@Before("preinitialization(*.new(.., @(javax.validation.* || javax.validation.constraints.*) (*), ..))")
public void beforeCtor(final JoinPoint point) {
    if (this.validator != null) {
        @SuppressWarnings("unchecked")
        final Constructor<Object> constructor = (Constructor<Object>)
            ConstructorSignature.class.cast(point.getSignature())
                .getConstructor();
        this.validateConstructor(
            constructor,
            point.getArgs()
        );
    }
}

public InitializationTest() {
    super("eval.org.aspectj.lang.InitializationAspect", JoinPoint.INITIALIZATION, ConstructorSignature.class);
}

public ConstructorExecutionTest() {
    super("eval.org.aspectj.lang.ConstructorExecutionAspect", JoinPoint.CONSTRUCTOR_EXECUTION, ConstructorSignature.class);
}

public ConstructorCallTest() {
    super("eval.org.aspectj.lang.ConstructorCallAspect", JoinPoint.CONSTRUCTOR_CALL, ConstructorSignature.class);
}

public PreInitializationTest() {
    super("eval.org.aspectj.lang.PreInitializationAspect", JoinPoint.PREINITIALIZATION, ConstructorSignature.class);
}

ConstructorJoinPointMatcher(AjJoinPointType joinPointType) {
    super(joinPointType, ConstructorSignature.class);
}

@Override
protected boolean doMatchSignature(ConstructorSignature signature, AjJoinPoint ajUnitJoinPoint) {
    return signature.getConstructor().equals(ajUnitJoinPoint.getConstructor());
}

/**
 * Generate traces and gather statistics on a constructor.
 * 
 * @param point The proceeding join point.
 * @param gatherSizeLevel Logging level at which the returned value of the function should be measured.
 * @param secure Is the method secure ? If so, both the arguments and the return value will be masked.
 * @param logger The logger to use.
 * @param operationNamePrefix the name of the layer being measured, appended as a prefix to the operation name.
 * @param printReturnValue option to print the returned value.f
 * @return The join point returned value.
 * @throws Throwable If the join point throws an exception.
 */
public static Object traceAndMeasureConstructorJoinPointWithLogger( ProceedingJoinPoint point, Level gatherSizeLevel, boolean secure, Logger logger, String operationNamePrefix, boolean printReturnValue ) throws Throwable {
    ConstructorSignature constructorSignature = ConstructorSignature.class.cast( point.getSignature() );
    Constructor<?> constructor = constructorSignature.getConstructor();
    String opName = operationNamePrefix + constructor.toString();

    OperationMetric metric = initializeConstructorMetricIfEnabled( point, secure, logger, constructor, opName );

    return traceAndMeasureJoinPointWithLogger( point, gatherSizeLevel, secure, metric, opName, logger, printReturnValue, constructor );
}