@SuppressWarnings("ConstantConditions")
static <T, V> Collection<V> genericCollect(
Collection<T> from, Class<? extends Collection> collectionClass, int initialCapacity) {
checkPrepositions(J7GroupPrepositions.Preposition.FIELD);
Collection<V> collected = createCollectionInstance(collectionClass, initialCapacity);
for (T entity : from) {
collected.add(ProxyHelper.<V>extractFirstArgument(entity));
}
return collected;
}
private static boolean extractDesiredValue() {
J7GroupPrepositions.Preposition calledPreposition =
ProxyHelper.getCalledPreposition(FIRST_PREPOSITION_INDEX);
try {
switch (calledPreposition) {
case WHEN_TRUE:
return true;
case WHEN_FALSE:
return false;
default:
throw new IllegalPrepositionException(
"Not allowed preposition was used. "
+ "Expected prepositions: WHEN_TRUE, WHEN_FALSE. Actual preposition: "
+ calledPreposition);
}
} finally {
clearCalledPrepositions();
}
}