org.apache.cocoon.forms.datatype
Interface ValidationRule

All Known Implementing Classes:

AbstractValidationRule

public interface ValidationRule

Interface for validation rules. Most Datatype implementations will perform their validation by checking a number of these validation rules (though strictly spoken this is not required).

Version:

$Id: ValidationRule.html 1304280 2012-03-23 11:18:01Z ilgrosso $

Method Summary

boolean	supportsType(Class clazz, boolean arrayType) Returns true if this ValidationRule supports validating objects of the same class as the one specified.
ValidationError	validate(Object value, org.outerj.expression.ExpressionContext expressionContext)

Method Detail

validate

public ValidationError validate(Object value,
                                org.outerj.expression.ExpressionContext expressionContext)

Parameters:

value - a value of a class supported by the ValidationRule implementation

expressionContext - many validation rules use the xReporter expression interpreter, the expressionContext allows to resolve variables used in these expressions.

supportsType

public boolean supportsType(Class clazz,
                            boolean arrayType)

Returns true if this ValidationRule supports validating objects of the same class as the one specified. If the flag 'arrayType' is true, this method will return true if this validation rule can validate arrays of these objects (i.e. the object passed to the validate method will then be an array).