[LANG-1495] Add EnumUtils getEnum() methods with default values

• Type: Improvement
• Status: Resolved
• Priority: Trivial
• Resolution: Fixed
• Fix Version/s: 3.10
• Assignee: Unassigned
• Reporter: Cheong Voon Leong
• Created: 25/Oct/19 07:09
• Updated: 28/Oct/19 18:29
• Resolved: 28/Oct/19 18:29

Description

I would like to add 2 overloading methods to EnumUtils, getEnum and getEnumIgnoreCase.

Instead of returning null, if not found. In my opinion I think allowing user to set a default result is a better approach or return an Optional.
 

public static <E extends Enum<E>> E getEnum(final Class<E> enumClass, final String enumName) {
 return getEnum(enumClass, enumName, null);
 }

public static <E extends Enum<E>> E getEnum(final Class<E> enumClass, final String enumName, E defaultEnum) {
 if (enumName == null) {
 return defaultEnum;
 }
 try {
 return Enum.valueOf(enumClass, enumName);
 } catch (final IllegalArgumentException ex) {
 return defaultEnum;
 }
 }

  

 

public static <E extends Enum<E>> E getEnumIgnoreCase(final Class<E> enumClass, final String enumName) {
 return getEnumIgnoreCase(enumClass, enumName, null);
 }
public static <E extends Enum<E>> E getEnumIgnoreCase(final Class<E> enumClass, final String enumName, E defaultEnum) {
 if (enumName == null || !enumClass.isEnum()) {
 return defaultEnum;
 }
 for (final E each : enumClass.getEnumConstants()) {
 if (each.name().equalsIgnoreCase(enumName)) {
 return each;
 }
 }
 return defaultEnum;
 }

 

Issue Links

• links to: GitHub Pull Request #475