wt.rule
Interface RuleSelector

All Known Implementing Classes:

DefaultRuleSelector, TypeBasedCompositeRuleSelector

public interface RuleSelector

This interface defines a rule selector. A rule selector selects an appropriate rule based the selection criteria that is provided. Different implementations of this will use the selection criteria in different ways to select a rule.

Supported API: false

Extendable: false

Method Summary

Rule	getRule(Object object, RuleType ruleType, WTContainerRef container) Select a rule of type ruleType that is applicable to object.

Method Detail

getRule

public Rule getRule(Object object,
                    RuleType ruleType,
                    WTContainerRef container)
             throws WTException

Select a rule of type ruleType that is applicable to object. If no rule can be found, return null.

The object argument may be a type identifier or a normal object. A type identifier is one of the following:

• Class
• TypeIdentifier
• String specifying the name of the type

Different implementations of this interface will use the criteria in different ways to select a rule.

Parameters:

object - the object that the rule should be applicable to (cannot be null)

ruleType - the type of rule to select (cannot be null)

container - the container in which to search for the rule

Returns:

Rule

Throws:

WTException