org.springframework.expression.spel.support

Class ReflectiveConstructorResolver

java.lang.Object

org.springframework.expression.spel.support.ReflectiveConstructorResolver

All Implemented Interfaces:

ConstructorResolver

public class ReflectiveConstructorResolver
extends Object
implements ConstructorResolver

A constructor resolver that uses reflection to locate the constructor that should be invoked.

Since:

3.0

Author:

Andy Clement, Juergen Hoeller

Constructor Summary

Constructors

Constructor and Description
ReflectiveConstructorResolver()

Method Summary

Modifier and Type	Method and Description
ConstructorExecutor	resolve(EvaluationContext context, String typeName, List<org.springframework.core.convert.TypeDescriptor> argumentTypes) Locate a constructor on the type.

Methods inherited from class java.lang.Object

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

Constructor Detail

ReflectiveConstructorResolver

public ReflectiveConstructorResolver()

Method Detail

resolve

@Nullable
public ConstructorExecutor resolve(EvaluationContext context,
                                             String typeName,
                                             List<org.springframework.core.convert.TypeDescriptor> argumentTypes)
                                      throws AccessException

Locate a constructor on the type. There are three kinds of match that might occur:

1. An exact match where the types of the arguments match the types of the constructor
2. An in-exact match where the types we are looking for are subtypes of those defined on the constructor
3. A match where we are able to convert the arguments into those expected by the constructor, according to the registered type converter.

Specified by:

resolve in interface ConstructorResolver

Parameters:

context - the current evaluation context

typeName - the type upon which to look for the constructor

argumentTypes - the arguments that the constructor must be able to handle

Returns:

a ConstructorExecutor that can invoke the constructor, or null if non found

Throws:

AccessException