org.mentawai.rule
Class RequiredFieldRule

java.lang.Object
  org.mentawai.rule.RequiredFieldRule

All Implemented Interfaces:

Rule

public class RequiredFieldRule
extends Object
implements Rule

A validation rule for required fields. This rule check if the action input value is present, in other words, not null. It also check if the value is a non-empty String.

Author:

Sergio Oliveira

Constructor Summary

RequiredFieldRule()

Method Summary

boolean	check(String field, Action action) Check and validate the given field from the give action.
static RequiredFieldRule	getInstance()
Map<String,String>	getTokens() Returns a map with tokens that can be used in the error messages.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

RequiredFieldRule

public RequiredFieldRule()

Method Detail

getInstance

public static RequiredFieldRule getInstance()

check

public boolean check(String field,
                     Action action)

Description copied from interface: Rule

Check and validate the given field from the give action.

Specified by:

check in interface Rule

Parameters:

field - The field to validate.

action - The action from where to get the field.

Returns:

true if the validation succeeds.

getTokens

public Map<String,String> getTokens()

Description copied from interface: Rule

Returns a map with tokens that can be used in the error messages. The tokens in the error messages will be replaced by the token values in this map.

Specified by:

getTokens in interface Rule

Returns:

A map with the token values.