Validating string

09 Jan

When setting options via HTML attributes, remember to enable the validator by setting data-fv-stringlength="true".

You don't need to do that when using either HTML 5 maxlength="..." or minlength="..." attribute. Meanwhile, the string Length validator counts new lines as one character.

An empty string is a string instance of zero length, whereas a null string has no value at all.

An empty string is represented as are initialized with the value of the empty string by the Java Server Faces implementation.

This plugin is used wherever build parameter selection is available, most commonly in the job configuration page by enabling parameterized builds (this parameter type will also be available as release parameters using the release plugin).

You should use two methods where each validates one type only.

You will see also that for this task you gain the advantage that the methods will be smaller and easier to read and understand. NET methods are named using This removes the need to worry about casing, lets Intelli Sense prompt you for valid values, and throwing an exception on an unexpected value ensures that you catch it during testing the moment it occurs, instead of the subtle "hey, this just keeps failing to validate" of always returning In conjunction with the answers provided above about the violation of the single point of responsibility and keeping the code as "Flat" as possible.

One of my pet hates is passing in a string of the type your are dealing with.

Use the provided "Type" class and then evaluate it against type you wish to deal with at the appropriate time.