public class PredicatedList extends PredicatedCollection implements java.util.List
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.
| Modifier and Type | Class and Description |
|---|---|
protected class |
PredicatedList.PredicatedListIterator
Inner class Iterator for the PredicatedList
|
predicatecollection| Modifier | Constructor and Description |
|---|---|
protected |
PredicatedList(java.util.List list,
Predicate predicate)
Constructor that wraps (not copies).
|
| Modifier and Type | Method and Description |
|---|---|
void |
add(int index,
java.lang.Object object) |
boolean |
addAll(int index,
java.util.Collection coll) |
static java.util.List |
decorate(java.util.List list,
Predicate predicate)
Factory method to create a predicated (validating) list.
|
java.lang.Object |
get(int index) |
protected java.util.List |
getList()
Gets the list being decorated.
|
int |
indexOf(java.lang.Object object) |
int |
lastIndexOf(java.lang.Object object) |
java.util.ListIterator |
listIterator() |
java.util.ListIterator |
listIterator(int i) |
java.lang.Object |
remove(int index) |
java.lang.Object |
set(int index,
java.lang.Object object) |
java.util.List |
subList(int fromIndex,
int toIndex) |
add, addAll, decorate, validateclear, contains, containsAll, equals, getCollection, hashCode, isEmpty, iterator, remove, removeAll, retainAll, size, toArray, toArray, toStringclone, finalize, getClass, notify, notifyAll, wait, wait, waitprotected PredicatedList(java.util.List list,
Predicate predicate)
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 nulljava.lang.IllegalArgumentException - if list or predicate is nulljava.lang.IllegalArgumentException - if the list contains invalid elementspublic static java.util.List decorate(java.util.List list,
Predicate predicate)
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 nulljava.lang.IllegalArgumentException - if list or predicate is nulljava.lang.IllegalArgumentException - if the list contains invalid elementsprotected java.util.List getList()
public java.lang.Object get(int index)
get in interface java.util.Listpublic int indexOf(java.lang.Object object)
indexOf in interface java.util.Listpublic int lastIndexOf(java.lang.Object object)
lastIndexOf in interface java.util.Listpublic java.lang.Object remove(int index)
remove in interface java.util.Listpublic void add(int index,
java.lang.Object object)
add in interface java.util.Listpublic boolean addAll(int index,
java.util.Collection coll)
addAll in interface java.util.Listpublic java.util.ListIterator listIterator()
listIterator in interface java.util.Listpublic java.util.ListIterator listIterator(int i)
listIterator in interface java.util.Listpublic java.lang.Object set(int index,
java.lang.Object object)
set in interface java.util.Listpublic java.util.List subList(int fromIndex,
int toIndex)
subList in interface java.util.ListCopyright © 2001-2025 Apache Software Foundation. All Rights Reserved.