boon/src/main/java/org/boon/criteria/ObjectFilter.java
public static Criteria criteriaFromJson(String json) {

        return (Criteria) Invoker.invokeFromObject(ObjectFilter.class,
                "createCriteriaFromClass", fromJson(json));

    }
public static Criteria criteriaFromJson(String json) {

        return (Criteria) Invoker.invokeFromObject(ObjectFilter.class,
                "createCriteriaFromClass", fromJson(json));

    }
Converts a JSON string into a Criteria.
@param json
@return