Class Lister<T>

java.lang.Object

org.jvnet.tiger_types.Lister<T>

public abstract class Lister<T>
extends Object

Abstracts away the process of creating a collection (array, List, etc) of items.

Field Summary

Fields

Modifier and Type	Field	Description
private static final Class[]	CONCRETE_TYPES
final Type	itemGenericType
final Class	itemType	Type of the individual item
protected final Collection	r

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	Lister(Class itemType, Type itemGenericType)
protected	Lister(Class itemType, Type itemGenericType, Collection r)

Method Summary

Modifier and Type	Method	Description
void	add(Object o)
static <T> Lister<T>	create(Class<T> c, Type t)	Creates a Lister instance that produces the given type.
static Lister	create(Type t)	Creates a Lister instance that produces the given type.
abstract T	toCollection()
private static IllegalAccessError	toError(IllegalAccessException e)
private static InstantiationError	toError(InstantiationException e)

Methods inherited from class Object

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

Field Details

itemType

public final Class itemType

Type of the individual item

itemGenericType

public final Type itemGenericType

r

protected final Collection r

CONCRETE_TYPES

private static final Class[] CONCRETE_TYPES

Constructor Details

Lister

protected Lister(Class itemType,
 Type itemGenericType)

Lister

protected Lister(Class itemType,
 Type itemGenericType,
 Collection r)

Method Details

add

public void add(Object o)

toCollection

public abstract T toCollection()

create

public static Lister create(Type t)

Creates a Lister instance that produces the given type.

create

public static <T> Lister<T> create(Class<T> c,
 Type t)

Creates a Lister instance that produces the given type.

Parameters:

c - The erasure version of 't'. This is taken as a parameter as a performance optimizaiton.

Returns:

null if the given type doesn't look like a collection.

Throws:

IllegalArgumentException - if the given type does look like a collection yet this implementation is not capable of how to handle it.

toError

private static IllegalAccessError toError(IllegalAccessException e)

toError

private static InstantiationError toError(InstantiationException e)