com.sdicons.json.validator.predicates

Class Let

java.lang.Object

com.sdicons.json.validator.predicates.Predicate

com.sdicons.json.validator.predicates.Let

All Implemented Interfaces:

Validator

public class Let
extends Predicate

It is a convenience rule that lets you specify a list of global shared validation rules in advance before using these later on. It becomes possible to first define a number of recurring types and then give the starting point. It is a utility rule that lets you tackle more complex validations. Note that it makes no sense to define anonymous rules inside the list, it is impossible to refer to these later on.

In this example we create a rule that matches a's or b's but not a mix of the two. In order to make the definition of our predicate a bit easier we make use of named sub rules.

  
 {
   "name" :"Let test -  a's or b's",
   "type" :"let",
   "*" : "start",
   "rules" : [{"name":"start", "type":"or", "rules":[{"type":"ref", "*":"a"}, {"type":"ref", "*":"b"}]},
              {"name":"a", "type":"regexp", "pattern":"a*"},
              {"name":"b", "type":"regexp", "pattern":"b*"}
             ]
 }
 
 

Constructor Summary

Constructors

Constructor and Description
Let(String aName, JSONObject aRule, HashMap<String,Validator> aRuleset)

Method Summary

Methods

Modifier and Type	Method and Description
void	validate(JSONValue aValue) Validate a JSONValue.

Methods inherited from class com.sdicons.json.validator.predicates.Predicate

getName

Methods inherited from class java.lang.Object

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

Constructor Detail

Let

public Let(String aName,
   JSONObject aRule,
   HashMap<String,Validator> aRuleset)
    throws ValidationException

Throws:

ValidationException

Method Detail

validate

public void validate(JSONValue aValue)
              throws ValidationException

Description copied from interface: Validator

Validate a JSONValue.

Parameters:

aValue - The JSONValue that has to be validated.

Throws:

ValidationException - If the validation fails.