Package 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	Description
ReflectiveConstructorResolver()

Method Summary

Modifier and Type	Method	Description
ConstructorExecutor	resolve(EvaluationContext context, String typeName, List<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 Details

ReflectiveConstructorResolver

public ReflectiveConstructorResolver()

Method Details

resolve

@Nullable
public ConstructorExecutor resolve(EvaluationContext context,
 String typeName,
 List<TypeDescriptor> argumentTypes)
                            throws AccessException

Locate a constructor on the type.

There are three kinds of matches that might occur:

1. An exact match where the types of the arguments match the types of the constructor.
2. An inexact 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 fully-qualified name of the type upon which to look for the constructor

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

Returns:

a ConstructorExecutor that can invoke the constructor, or null if the constructor cannot be found

Throws:

AccessException