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

    Methods
    Modifier and Type | Method and 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 Detail

    - #### ReflectiveConstructorResolver

          public ReflectiveConstructorResolver()

  - ### Method Detail

    - #### resolve

          public ConstructorExecutor resolve(EvaluationContext context,
                                    String typename,
                                    List<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`