ru.vyarus.java.generics.resolver.util

Class GenericsTrackingUtils

java.lang.Object

ru.vyarus.java.generics.resolver.util.GenericsTrackingUtils

public final class GenericsTrackingUtils
extends java.lang.Object

Utilities to track root generic value from some known subtype generics.

Since:

11.05.2018

Method Summary

Modifier and Type	Method and Description
static java.util.LinkedHashMap<java.lang.String,java.lang.reflect.Type>	track(java.lang.Class<?> type, java.lang.Class<?> known, java.util.LinkedHashMap<java.lang.String,java.lang.reflect.Type> knownGenerics) Track root generics with known middle type generic.

Methods inherited from class java.lang.Object

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

Method Detail

track

public static java.util.LinkedHashMap<java.lang.String,java.lang.reflect.Type> track(java.lang.Class<?> type,
                                                                                     java.lang.Class<?> known,
                                                                                     java.util.LinkedHashMap<java.lang.String,java.lang.reflect.Type> knownGenerics)

Track root generics with known middle type generic. For example, Some<P> extends Base<P> and we know generic of Base<T> then it is possible to track that P == T and so known.

Parameters:

type - root type to track generics for

known - class or interface with known generics (in the middle of root type hierarchy)

knownGenerics - generics of known type

Returns:

root class generics (row types were impossible to track)

Throws:

java.lang.IllegalStateException - when resolved generic of known type contradict with known generic value (type can't be casted to known type)