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java.lang.Object java.util.AbstractCollection<E> net.sf.molae.pipe.trafo.TransformedCollection<S,E>
public final class TransformedCollection<S,E>
Provides a different view to an existing collection by transforming each element.
Constructor Summary | |
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TransformedCollection(Collection<S> base,
TwoWayTransformer<S,E> transformer)
Constructs a TransformedCollection object. |
Method Summary | ||
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boolean |
add(E o)
Ensures that the base collection contains an element that transforms into the specified element. |
|
void |
clear()
Removes all of the elements from the base collection. |
|
boolean |
contains(Object o)
Returns true if the base collection contains an element
that would transform into the specified element. |
|
boolean |
isEmpty()
Returns true if the base collection contains no elements. |
|
Iterator<E> |
iterator()
|
|
static
|
newInstance(Collection<S> base,
TwoWayTransformer<S,E> transformer)
Constructs a TransformedCollection object. |
|
boolean |
remove(Object o)
Removes an element from the base list that would transform into the specified object, if such an element exists. |
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int |
size()
Returns the number of elements in the base collection. |
Methods inherited from class java.util.AbstractCollection |
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addAll, containsAll, removeAll, retainAll, toArray, toArray, toString |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Methods inherited from interface java.util.Collection |
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equals, hashCode |
Constructor Detail |
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public TransformedCollection(Collection<S> base, TwoWayTransformer<S,E> transformer)
base
- the underlying collectiontransformer
- the transformer that maps each element to another one.
NullPointerException
- if any of the specified objects is
null
.Method Detail |
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public static <S,E> TransformedCollection<S,E> newInstance(Collection<S> base, TwoWayTransformer<S,E> transformer)
base
- the underlying collectiontransformer
- the transformer that maps each element to another one.
NullPointerException
- if any of the specified objects is
null
.public int size()
size
in interface Collection<E>
size
in class AbstractCollection<E>
public boolean isEmpty()
true
if the base collection contains no elements.
isEmpty
in interface Collection<E>
isEmpty
in class AbstractCollection<E>
true
if the base collection contains no elements.public boolean contains(Object o)
true
if the base collection contains an element
that would transform into the specified element.
contains
in interface Collection<E>
contains
in class AbstractCollection<E>
o
- element whose presence in this collection is to be tested.
true
if the base collection contains an element
that would transform into the specified element.public Iterator<E> iterator()
iterator
in interface Iterable<E>
iterator
in interface Collection<E>
iterator
in class AbstractCollection<E>
public boolean add(E o)
add
in interface Collection<E>
add
in class AbstractCollection<E>
UnsupportedOperationException
- depending on the base class and
the transformer
ClassCastException
- class of the specified element prevents
finding a source element for it.
IllegalArgumentException
- some aspect of this element prevents
finding a source element for it.public boolean remove(Object o)
remove
in interface Collection<E>
remove
in class AbstractCollection<E>
true
if the base collection changed as a result
of the callpublic void clear()
clear
in interface Collection<E>
clear
in class AbstractCollection<E>
UnsupportedOperationException
- depending on the base collection
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