checkDomain

Checks a String for validity of use as a Logger.domain value. This provides a uniform standard for all Log implementations to rely on.

A valid domain is either null, or complies with the following parameters:

• Is greater than or equal to 3 characters in length.

• Is less than or equal to 32 characters in length.

• Contains only the following:

• Characters 0 - 9

• Characters a - z

• Separators ., -, :

• Does not start or end with a separator character.

• e.g. Invalid >>.my.domain

• e.g. Invalid >>my.domain.

• Contains at least 1 separator character.

• e.g. Invalid >>mydomain

• Separator characters do not precede or follow another separator character.

• e.g. Invalid >>my.:domain

Throws