public static boolean toBooleanOrDie(Object obj) {
if (obj == null) {
die("Can't convert boolean from a null");
}
if (obj instanceof Boolean) {
return ((Boolean) obj).booleanValue();
} 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 if (str.equals("true")) {
return true;
}
die("Can't convert string", obj, "to boolean ");
return false;
} else {
die("Can't convert", obj, "to boolean ");
return false;
}
}
/**
* 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));
}
}
public static <T> T[] toArray(Class<T> componentType, Collection<T> collection) {
T[] array = (T[]) Array.newInstance(componentType, collection.size());
if (componentType.isAssignableFrom(getComponentType(collection))) {
return collection.toArray(array);
} else {
int index = 0;
for (Object o : collection) {
array[index] = Conversions.coerce(componentType, o);
index++;
}
return array;
}
}
public static <V> V[] array(Class<V> type, final Collection<V> array) {
return Conversions.toArray(type, array);
}