ca.infoway.messagebuilder.j5goodies
Class Generics

java.lang.Object
  ca.infoway.messagebuilder.j5goodies.Generics

public class Generics
extends Object

This class provides some utilities for dealing with Generics in the bean definitions of collections.

Author:

BC Holmes

Constructor Summary

Generics()

Method Summary

static Type	getParameterType(PropertyDescriptor descriptor) Determine the return type of a collection property.
static Type	getParameterType(Type type) Get the type of a particular parameterized type.
static boolean	isCollectionParameterizedType(Type type) This method is used to determine if the type is a Parameterized Type that implements the Collection interface (typically a List or a Set).

Methods inherited from class java.lang.Object

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

Constructor Detail

Generics

public Generics()

Method Detail

getParameterType

public static Type getParameterType(PropertyDescriptor descriptor)

Determine the return type of a collection property. For example, consider the following getter:

 public List<String> getNames() {
    ...
 }
 

In this case, the getElementType method will return "String".

Parameters:

descriptor - - the property descriptor of the generic property

Returns:

- the Type of the parameterized return type

getParameterType

public static Type getParameterType(Type type)

Get the type of a particular parameterized type.

Parameters:

type - - the generic return type

Returns:

- the Type of the parameterized return type

isCollectionParameterizedType

public static boolean isCollectionParameterizedType(Type type)

This method is used to determine if the type is a Parameterized Type that implements the Collection interface (typically a List or a Set). Note that Maps do not implement the Collection interface.

Parameters:

type - - the generic return type

Returns:

- true if the type is a collection type that is parameterized