com.sdicons.json.validator

Class JSONValidator

java.lang.Object

com.sdicons.json.validator.JSONValidator

All Implemented Interfaces:

Validator

public class JSONValidator
extends Object
implements Validator

A validator that accepts a validator description in JSON format.

In this example the validator itself is stored in a JSON text file as well. This is not a requirement, you can build the validator in code as well. The validator is composed of predicates which can be found in the package com.sdicons.json.validator.predicates

 
 final JSONParser parser = new JSONParser(ValidatorTest.class.getResourceAsStream("/rules/range-validator.json"));
 final Validator validator = new JSONValidator((JSONObject) parser.nextValue());
 validator.validate(new JSONInteger(new BigDecimal("5")));
 
 

The validator file looks like this. It is a range check.

 
 {
    "name" :"Range Test",
    "type" :"range",
    "min" : 50,
    "max" : 100
 }
 
 

You can also use the ValidatorBuilder to create the validators programmatically.

 
 Validator v = vb.range(50, 100);
 p = new JSONParser("55");
 json = p.nextValue();
 v.validate(json);
 
 

See Also:

com.sdicons.json.validator.predicates

Constructor Summary

Constructors

Constructor and Description
JSONValidator(JSONObject aValidation) Construct the validator based on the JSON description.

Method Summary

Methods

Modifier and Type	Method and Description
void	validate(JSONValue aValue) Validate a JSON value according to the rules described in the validator rules.

Methods inherited from class java.lang.Object

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

Constructor Detail

JSONValidator

public JSONValidator(JSONObject aValidation)
              throws ValidationException

Construct the validator based on the JSON description.

Parameters:

aValidation - The JSON description of the validator.

Throws:

ValidationException - If the JSON description did not represent a validator.

Method Detail

validate

public void validate(JSONValue aValue)
              throws ValidationException

Validate a JSON value according to the rules described in the validator rules.

Specified by:

validate in interface Validator

Parameters:

aValue -

Throws:

ValidationException