public static <T> Iterator<T> iterator(Class<T> class1, final Object value) {
if (value == null) {
return Collections.EMPTY_LIST.iterator();
}
if (Boon.isArray(value)) {
final int length = Arry.len(value);
return new Iterator<T>() {
int i = 0;
@Override
public boolean hasNext() {
return i < length;
}
@Override
public T next() {
if (i >= length) throw new NoSuchElementException("No more properties");
T next = (T) BeanUtils.idx(value, i);
i++;
return next;
}
@Override
public void remove() {}
};
} else if (Typ.isCollection(value.getClass())) {
return ((Collection<T>) value).iterator();
} else {
return (Iterator<T>) Collections.singleton(value).iterator();
}
}
public static byte[] barray(Object value) {
// You could handleUnexpectedException shorts, ints, longs and chars more efficiently
if (value.getClass() == Typ.byteArray) {
return (byte[]) value;
}
byte[] values = new byte[Boon.len(value)];
int index = 0;
Iterator<Object> iterator = iterator(Object.class, value);
while (iterator.hasNext()) {
values[index] = toByte(iterator.next());
index++;
}
return values;
}
public static char[] carray(Object value) {
// You could handleUnexpectedException shorts, ints, longs and chars more efficiently
if (value.getClass() == Typ.charArray) {
return (char[]) value;
}
char[] values = new char[Boon.len(value)];
int index = 0;
Iterator<Object> iterator = iterator(Typ.object, value);
while (iterator.hasNext()) {
values[index] = toChar(iterator.next());
index++;
}
return values;
}
/**
* Converts the value to boolean, and if it is null, it uses the default value passed.
*
* @param obj value to convert to boolean
* @param defaultValue default value
* @return obj converted to boolean
*/
public static boolean toBoolean(Object obj, boolean defaultValue) {
if (obj == null) {
return defaultValue;
}
if (obj instanceof Boolean) {
return ((Boolean) obj).booleanValue();
} else if (obj instanceof Number || obj.getClass().isPrimitive()) {
int value = toInt(obj);
return value != 0 ? true : false;
} else if (obj instanceof String || obj instanceof CharSequence) {
String str = Conversions.toString(obj);
if (str.length() == 0) {
return false;
}
if (str.equals("false")) {
return false;
} else {
return true;
}
} else if (Boon.isArray(obj)) {
return Boon.len(obj) > 0;
} else if (obj instanceof Collection) {
if (len(obj) > 0) {
List list = Lists.list((Collection) obj);
while (list.remove(null)) {}
return Lists.len(list) > 0;
} else {
return false;
}
} else {
return toBoolean(Conversions.toString(obj));
}
}
@SuppressWarnings({"rawtypes", "unchecked"})
public static Set toSet(Object value) {
if (value instanceof Set) {
return (Set) value;
} else if (value instanceof Collection) {
return new HashSet((Collection) value);
} else {
HashSet set = new HashSet(Boon.len(value));
Iterator<Object> iterator = iterator(Typ.object, value);
while (iterator.hasNext()) {
set.add(iterator.next());
}
return set;
}
}
public static Collection toCollection(Object value) {
if (value instanceof Collection) {
return (Collection) value;
} else if (value == null) {
return new ArrayList();
} else if (value instanceof Map) {
return ((Map) value).entrySet();
} else {
ArrayList list = new ArrayList(Boon.len(value));
Iterator<Object> iterator = iterator(Typ.object, value);
while (iterator.hasNext()) {
list.add(iterator.next());
}
return list;
}
}
@SuppressWarnings({"rawtypes", "unchecked"})
public static List toList(Object value) {
if (value instanceof List) {
return (List) value;
} else if (value instanceof Collection) {
return new ArrayList((Collection) value);
} else if (value == null) {
return new ArrayList();
} else if (value instanceof Map) {
return new ArrayList(((Map) value).entrySet());
} else {
ArrayList list = new ArrayList(Boon.len(value));
Iterator<Object> iterator = iterator(Typ.object, value);
while (iterator.hasNext()) {
list.add(iterator.next());
}
return list;
}
}
@SuppressWarnings("unchecked")
public static <T> T toPrimitiveArrayIfPossible(Class<T> clz, Object value) {
if (clz == Typ.intArray) {
return (T) iarray(value);
} else if (clz == Typ.byteArray) {
return (T) barray(value);
} else if (clz == Typ.charArray) {
return (T) carray(value);
} else if (clz == Typ.shortArray) {
return (T) sarray(value);
} else if (clz == Typ.longArray) {
return (T) larray(value);
} else if (clz == Typ.floatArray) {
return (T) farray(value);
} else if (clz == Typ.doubleArray) {
return (T) darray(value);
} else if (value.getClass() == clz) {
return (T) value;
} else {
int index = 0;
Object newInstance = Array.newInstance(clz.getComponentType(), Boon.len(value));
Iterator<Object> iterator = iterator(Typ.object, value);
while (iterator.hasNext()) {
Object item = iterator.next();
if (clz.getComponentType().isAssignableFrom(item.getClass())) {
BeanUtils.idx(newInstance, index, item);
} else {
item = coerce(clz.getComponentType(), item);
BeanUtils.idx(newInstance, index, item);
}
index++;
}
return (T) newInstance;
}
}