Package org.eclipse.yasson.internal

Class VariableTypeInheritanceSearch

java.lang.Object

org.eclipse.yasson.internal.VariableTypeInheritanceSearch

public class VariableTypeInheritanceSearch
extends Object

Search for type variable in inheritance hierarchy and resolve if possible.

Author:

Roman Grigoriadi

Constructor Summary

Constructors

Constructor	Description
VariableTypeInheritanceSearch()

Method Summary

Modifier and Type	Method	Description
Type	searchParametrizedType(Type typeToSearch, TypeVariable<?> typeVar)	Searches the hierarchy of classes to resolve a type variable.

Methods inherited from class java.lang.Object

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

Constructor Detail

VariableTypeInheritanceSearch

public VariableTypeInheritanceSearch()

Method Detail

searchParametrizedType

public Type searchParametrizedType(Type typeToSearch,
                                   TypeVariable<?> typeVar)

Searches the hierarchy of classes to resolve a type variable. If typevar resolved value is another typevar redirection (propagated from wrapping class), this typevar is returned.

 Example 1: typevar is resolved


 class GenericClass <T> {
     private T genericField;
 }
 class ConcreteClass extends GenericClass<MyPojo> {
     //...
 }

 In above case when ConcreteClass type is passed as runtime type and <T> as type variable, T is resolved to MyPojo.
 

 Example 2: typevar is resolved to another propagated typevar


 class WrapperGenericClass<X> {
     private GenericClass<X> propagatedGenericField
 }

 class AnotherClass extends WrapperGenericClass<MyPojo> {
 }


 In second case when GenericClass ParameterizedType is passed as runtime type and <T> as type variable,
 T is resolved to propagated <X> by WrapperGenericClass.

 Resolution on <X> must be performed thereafter with AnotherClass runtime type.
 

Parameters:

typeToSearch - runtime type to search for typevar in, not null

typeVar - type variable to resolve, not null

Returns:

resolved runtime type, or type variable