private ShadowMatch getShadowMatch(Method targetMethod, Method originalMethod) {
// Avoid lock contention for known Methods through concurrent access...
ShadowMatch shadowMatch = this.shadowMatchCache.get(targetMethod);
if (shadowMatch == null) {
synchronized (this.shadowMatchCache) {
// Not found - now check again with full lock...
PointcutExpression fallbackExpression = null;
Method methodToMatch = targetMethod;
shadowMatch = this.shadowMatchCache.get(targetMethod);
if (shadowMatch == null) {
try {
shadowMatch = this.pointcutExpression.matchesMethodExecution(methodToMatch);
} catch (ReflectionWorldException ex) {
// Failed to introspect target method, probably because it has been loaded
// in a special ClassLoader. Let's try the declaring ClassLoader instead...
try {
fallbackExpression = getFallbackPointcutExpression(methodToMatch.getDeclaringClass());
if (fallbackExpression != null) {
shadowMatch = fallbackExpression.matchesMethodExecution(methodToMatch);
}
} catch (ReflectionWorldException ex2) {
fallbackExpression = null;
}
}
if (shadowMatch == null && targetMethod != originalMethod) {
methodToMatch = originalMethod;
try {
shadowMatch = this.pointcutExpression.matchesMethodExecution(methodToMatch);
} catch (ReflectionWorldException ex3) {
// Could neither introspect the target class nor the proxy class ->
// let's try the original method's declaring class before we give up...
try {
fallbackExpression =
getFallbackPointcutExpression(methodToMatch.getDeclaringClass());
if (fallbackExpression != null) {
shadowMatch = fallbackExpression.matchesMethodExecution(methodToMatch);
}
} catch (ReflectionWorldException ex4) {
fallbackExpression = null;
}
}
}
if (shadowMatch == null) {
shadowMatch = new ShadowMatchImpl(org.aspectj.util.FuzzyBoolean.NO, null, null, null);
} else if (shadowMatch.maybeMatches() && fallbackExpression != null) {
shadowMatch =
new DefensiveShadowMatch(
shadowMatch, fallbackExpression.matchesMethodExecution(methodToMatch));
}
this.shadowMatchCache.put(targetMethod, shadowMatch);
}
}
}
return shadowMatch;
}