@Override
public String getSingularObjectFromString(final String stringUsername)
throws FieldValidationException {
List<GenericValue> getIssueType = new ArrayList<GenericValue>();
if (stringUsername == null)
throw new FieldValidationException("Username cannot be null.");
try {
if (stringUsername.length() < MINIMUM_USERNAME_LENGTH) {
throw new FieldValidationException(
"Username cannot be less than 6 characters.");
}
List<String> arrayListToGetPassword = new ArrayList<String>();
arrayListToGetPassword = Collections.singletonList(stringUsername);
FieldManager fieldManager = ComponentAccessor.getFieldManager();
CustomField myCustomField = fieldManager
.getCustomField(customFieldId);
getIssueType = myCustomField.getAssociatedIssueTypes();
customFieldValuePersister.updateValues(myCustomField, issueId,
PersistenceFieldType.TYPE_LIMITED_TEXT,
arrayListToGetPassword);
return stringUsername;
} catch (FieldValidationException ex) {
throw new FieldValidationException("Not a valid Username.");
}
}