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Make TypeDescriptor more amenable to subclassing 

Change the previously package scope TypeDescriptor constructor to
protected and add a getResolvableType() protected method.

Issue: SPR-11303
This commit is contained in:
Phillip Webb 2014-01-17 11:03:25 -08:00
parent e2feed494b
commit 7e6dbc24f6
1 changed files with 17 additions and 2 deletions
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19
spring-core/src/main/java/org/springframework/core/convert/TypeDescriptor.java
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@ -1,5 +1,5 @@
/*
* Copyright 2002-2013 the original author or authors.
* Copyright 2002-2014 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@ -109,7 +109,15 @@ public class TypeDescriptor implements Serializable {
this.annotations = nullSafeAnnotations(property.getAnnotations());
}
private TypeDescriptor(ResolvableType resolvableType, Class<?> type, Annotation[] annotations) {
/**
* Create a new type descriptor from a {@link ResolvableType}. This protected
* constructor is used internally and may also be used by subclasses that support
* non-Java languages with extended type systems.
* @param resolvableType the resolvable type
* @param type the backing type or {@code null} if should be resolved
* @param annotations the type annotations
*/
protected TypeDescriptor(ResolvableType resolvableType, Class<?> type, Annotation[] annotations) {
this.resolvableType = resolvableType;
this.type = (type != null ? type : resolvableType.resolve(Object.class));
this.annotations = nullSafeAnnotations(annotations);
@ -141,6 +149,13 @@ public class TypeDescriptor implements Serializable {
return this.type;
}
/**
* Returns the underlying {@link ResolvableType}.
*/
protected ResolvableType getResolvableType() {
return this.resolvableType;
}
/**
* Return the underlying source of the descriptor. Will return a {@link Field},
* {@link MethodParameter} or {@link Type} depending on how the {@link TypeDescriptor}