/**
* Returns compact class host.
*
* @param obj Object to compact.
* @return String.
*/
@Nullable
public static Object compactObject(Object obj) {
if (obj == null) return null;
if (obj instanceof Enum) return obj.toString();
if (obj instanceof String || obj instanceof Boolean || obj instanceof Number) return obj;
if (obj instanceof Collection) {
Collection col = (Collection) obj;
Object[] res = new Object[col.size()];
int i = 0;
for (Object elm : col) res[i++] = compactObject(elm);
return res;
}
if (obj.getClass().isArray()) {
Class<?> arrType = obj.getClass().getComponentType();
if (arrType.isPrimitive()) {
if (obj instanceof boolean[]) return Arrays.toString((boolean[]) obj);
if (obj instanceof byte[]) return Arrays.toString((byte[]) obj);
if (obj instanceof short[]) return Arrays.toString((short[]) obj);
if (obj instanceof int[]) return Arrays.toString((int[]) obj);
if (obj instanceof long[]) return Arrays.toString((long[]) obj);
if (obj instanceof float[]) return Arrays.toString((float[]) obj);
if (obj instanceof double[]) return Arrays.toString((double[]) obj);
}
Object[] arr = (Object[]) obj;
int iMax = arr.length - 1;
StringBuilder sb = new StringBuilder("[");
for (int i = 0; i <= iMax; i++) {
sb.append(compactObject(arr[i]));
if (i != iMax) sb.append(", ");
}
sb.append("]");
return sb.toString();
}
return U.compact(obj.getClass().getName());
}
private static Object createArgumentPlaceholder(Class<?> clazz, Integer placeholderId) {
if (clazz.isPrimitive() || Number.class.isAssignableFrom(clazz) || Character.class == clazz)
return getPrimitivePlaceHolder(clazz, placeholderId);
if (clazz == String.class) return String.valueOf(placeholderId);
if (Date.class.isAssignableFrom(clazz)) return new Date(placeholderId);
if (clazz.isArray()) return Array.newInstance(clazz.getComponentType(), 1);
try {
return createArgumentPlaceholderForUnknownClass(clazz, placeholderId);
} catch (Exception e) {
throw new ArgumentConversionException(
"It is not possible to create a placeholder for class: " + clazz.getName(), e);
}
}