fc.web.forms.VConditional

public abstract class VConditional extends FormValidator

Validates that certain conditions in one or more fields in the form require other conditions of some other fields in that form.

Since the pre/post conditions can be arbitrary, this class defines abstract methods called preConditionMet(FormData, HttpServletRequest) and postConditionMet(FormData, HttpServletRequest). If the pre condition is true, the post condition must also be true. Subclasses should implement both methods as appropriate.

Constructor Details
- VConditional
  
  public VConditional(Form f, String name, String errorMessage)
Method Details
- validate
  
  public boolean validate(FormData fd, HttpServletRequest req)
  
  Returns the value returned by postConditionMet(FormData, HttpServletRequest) if the pre conditions were met. (preConditionMet(FormData, HttpServletRequest) returned true). If the pre condition was not met, there is no need for further validation and this method will return true.
  
  Specified by:
  
  validate in class FormValidator
  
  Returns:
  
  true is validation succeeded, false otherwise
- preConditionMet
  
  public abstract boolean preConditionMet(FormData fd, HttpServletRequest req)
  
  Subclasses should implement this method to check that certain fields or pre-conditions have been met. Only gf these conditions have been met will there be a check to see that the post conditions are also true.
  
  Returns:
  
  true if the pre-conditions have been met, false otherwise
- postConditionMet
  
  public abstract boolean postConditionMet(FormData fd, HttpServletRequest req)
  
  Subclasses should implement this method to check that certain post conditions have been met. This method will only be called if the preConditionMet(FormData, HttpServletRequest) method returns true.
  
  Returns:
  
  true if the post-conditions have been met, false otherwise

Class VConditional

Constructor Summary