org.elkoserver.foundation.json
Class StaticTypeResolver

java.lang.Object
  org.elkoserver.foundation.json.StaticTypeResolver

All Implemented Interfaces:

TypeResolver

public class StaticTypeResolver
extends Object
implements TypeResolver

A simple type resolver that tries to resolve JSON type tags from statically available class information rather than from a lookup table. It looks, in the class (and its superclasses) for which it is trying to resolve a type name, for a static method with the signature:

Class jsonClass(String typeName);

which it will then invoke to do the resolution. If it fails to find such a method, it will default to assuming that the goal class is itself the proper result.

Field Summary

static StaticTypeResolver

theStaticTypeResolver The singleton instance of this resolver.

Method Summary

Class

resolveType(Class baseType, String typeName) Resolve a JSON type tag.

Methods inherited from class java.lang.Object

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

Field Detail

theStaticTypeResolver

public static final StaticTypeResolver theStaticTypeResolver

The singleton instance of this resolver.

Method Detail

resolveType

public Class resolveType(Class baseType,
                         String typeName)

Resolve a JSON type tag. This is done by looking for a method named 'jsonClass' in the class 'baseType' (or one of its superclasses), then invoking this method to perform the resolution. If such a method doesn't exist, then assume that the class 'baseType' itself is the right answer.

Specified by:

resolveType in interface TypeResolver

Parameters:

baseType - The base class to which the type name should resolve (and from which a 'jsonClass' method will be sought).

typeName - The JSON type tag string whose resolution is sought.

Returns:

a suitable class for the name 'typeName' that can be assigned to a parameter of class 'baseType'.