//
// Initialize the hashtable of methods which are allowed to raise
// SQLFeatureNotSupportedException.
//
private void initializeExcludableMap(HashSet<String> vanishedMethodList) throws Exception {
excludableMap = new Hashtable<Class, HashSet<Method>>();
int count = rawExcludables.length;
for (int i = 0; i < count; i++) {
Exclusions exclusions = rawExcludables[i];
Class<?> iface = exclusions.getInterface();
MD[] mds = exclusions.getExcludedMethods();
int exclusionCount = mds.length;
HashSet<Method> excludedMethodSet = new HashSet<Method>();
for (int j = 0; j < exclusionCount; j++) {
MD md = mds[j];
if (!md.requiredAtThisLevel()) {
continue;
}
//
// If we are strictly enforcing the JDBC standard,
// then expose the mandatory methods which we know Derby
// doesn't implement.
//
if (STRICT_ENFORCEMENT && !md.isOptional()) {
continue;
}
Method method = null;
try {
method = iface.getMethod(md.getMethodName(), md.getArgTypes());
} catch (NoSuchMethodException e) {
}
if (method == null) {
vanishedMethodList.add(
"Method has vanished from SQL interface: " + iface.getName() + "." + md);
}
excludedMethodSet.add(method);
}
excludableMap.put(iface, excludedMethodSet);
}
}
//
// Record an unexpected error.
//
private void recordUnexpectedError(
Object candidate,
Class iface,
Method method,
HashSet<String> notUnderstoodList,
Throwable cause)
throws Exception {
notUnderstoodList.add(candidate.getClass().getName() + " " + method + " raises " + cause);
}
//
// Examine a single method to see if it raises SQLFeatureNotSupportedException.
//
private void vetMethod(
Object candidate,
Class iface,
Method method,
HashSet<String> unsupportedList,
HashSet<String> notUnderstoodList)
throws Exception {
try {
method.invoke(candidate, getNullArguments(method.getParameterTypes()));
// it's ok for the method to succeed
} catch (Throwable e) {
if (!(e instanceof InvocationTargetException)) {
recordUnexpectedError(candidate, iface, method, notUnderstoodList, e);
} else {
Throwable cause = e.getCause();
if (cause instanceof SQLFeatureNotSupportedException) {
boolean isExcludable = isExcludable(method);
if (!isExcludable) {
StackTraceElement[] stack = cause.getStackTrace();
int i = 0;
while (i < stack.length && !stack[i].getMethodName().equals("notImplemented")) {
++i;
}
while (i < stack.length && stack[i].getMethodName().equals("notImplemented")) {
++i;
}
if (i == stack.length) {
// cause.printStackTrace();
}
unsupportedList.add(
candidate.getClass().getName()
+ ": "
+ method
+ "@"
+ (i == stack.length ? "no source" : cause.getStackTrace()[i]));
} else {
}
} else if (cause instanceof SQLException) {
// swallow other SQLExceptions, caused by bogus args
} else if (cause instanceof NullPointerException) {
// swallow other NPEs, caused by bogus args
} else if (cause instanceof ArrayIndexOutOfBoundsException) {
// swallow these, caused by bogus args
} else {
recordUnexpectedError(candidate, iface, method, notUnderstoodList, cause);
}
}
}
}