org.apache.commons.collections.list
Class PredicatedList
- Collection, List, Serializable
public class PredicatedList
implements List
Decorates another
List
to validate that all additions
match a specified predicate.
This list exists to provide validation for the decorated list.
It is normally created to decorate an empty list.
If an object cannot be added to the list, an IllegalArgumentException is thrown.
One usage would be to ensure that no null entries are added to the list.
List list = PredicatedList.decorate(new ArrayList(), NotNullPredicate.INSTANCE);
This class is Serializable from Commons Collections 3.1.
$Revision: 1.6 $ $Date: 2004/06/03 22:02:13 $- Stephen Colebourne
- Paul Jack
void | add(int index, Object object)
|
boolean | addAll(int index, Collection coll)
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static List | decorate(List list, Predicate predicate) - Factory method to create a predicated (validating) list.
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Object | get(int index)
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protected List | getList() - Gets the list being decorated.
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int | indexOf(Object object)
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int | lastIndexOf(Object object)
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ListIterator | listIterator()
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ListIterator | listIterator(int i)
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Object | remove(int index)
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Object | set(int index, Object object)
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List | subList(int fromIndex, int toIndex)
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add , addAll , clear , contains , containsAll , equals , getCollection , hashCode , isEmpty , iterator , remove , removeAll , retainAll , size , toArray , toArray , toString |
PredicatedList
protected PredicatedList(List list,
Predicate predicate)
Constructor that wraps (not copies).
If there are any elements already in the list being decorated, they
are validated.
list
- the list to decorate, must not be nullpredicate
- the predicate to use for validation, must not be null
add
public void add(int index,
Object object)
addAll
public boolean addAll(int index,
Collection coll)
decorate
public static List decorate(List list,
Predicate predicate)
Factory method to create a predicated (validating) list.
If there are any elements already in the list being decorated, they
are validated.
list
- the list to decorate, must not be nullpredicate
- the predicate to use for validation, must not be null
get
public Object get(int index)
getList
protected List getList()
Gets the list being decorated.
indexOf
public int indexOf(Object object)
lastIndexOf
public int lastIndexOf(Object object)
listIterator
public ListIterator listIterator()
listIterator
public ListIterator listIterator(int i)
remove
public Object remove(int index)
set
public Object set(int index,
Object object)
subList
public List subList(int fromIndex,
int toIndex)
Copyright © 2001-2006 Apache Software Foundation. All Rights Reserved.