public class XBooleanIndexedList extends XBooleanCollectionBase implements XBooleanList, RandomAccess
This class represents a random access collection with real-time behavior (smooth capacity increase) for a primitivive list of booleans
This class has the following advantages over the widely used
java.util.ArrayList
:
boolean
and Boolean
.shared
. Iterations over the XBooleanIndexedList
values are faster when
performed using the get(int)
method rather than using collection
records or iterators:[code]
for (int i = 0, n = list.size(); i < n; i++) {
list.get(i);
}[/code]
This class was based on collections code from http://javolution.org, but modified for use outside of realtime jvms.
Constructor and Description |
---|
XBooleanIndexedList()
Creates a list of small initial capacity.
|
XBooleanIndexedList(int capacity)
Creates a list of specified initial capacity; unless the list size
reaches the specified capacity, operations on this list will not
allocate memory (no lazy object creation).
|
XBooleanIndexedList(XBooleanCollection values)
Creates a list containing the specified values, in the order they
are returned by the collection's iterator.
|
Modifier and Type | Method and Description |
---|---|
boolean |
add(boolean value)
Appends the specified value to the end of this list.
|
void |
add(int index,
boolean value)
Inserts the specified value at the specified position in this list.
|
boolean |
addAll(int index,
XBooleanCollection values)
Inserts all of the values in the specified collection into this
list at the specified position.
|
void |
addLast(boolean value)
Appends the specified value to the end of this list (fast).
|
void |
clear()
Removes all of the values from this collection (optional operation).
|
boolean |
contains(boolean value)
Indicates if this collection contains the specified value.
|
void |
delete(XCollection.Record record)
Deletes the specified record from this collection.
|
boolean |
get(int index)
Returns the element at the specified index.
|
boolean |
getFirst()
Returns the first value of this list.
|
boolean |
getLast()
Returns the last value of this list.
|
XCollection.Record |
head()
Returns the head record of this collection; it is the record such as
head().getNext() holds the first collection value. |
int |
indexOf(boolean value)
Returns the index in this list of the first occurrence of the specified
value, or -1 if this list does not contain this value.
|
XBooleanIterator |
iterator()
Returns an iterator over the elements in this list
|
int |
lastIndexOf(boolean value)
Returns the index in this list of the last occurrence of the specified
value, or -1 if this list does not contain this value.
|
XBooleanListIterator |
listIterator()
Returns a list iterator over the elements in this list
|
XBooleanListIterator |
listIterator(int index)
Returns a list iterator from the specified position
|
static XBooleanIndexedList |
newInstance()
Returns a new, preallocated or recycled
XBooleanIndexedList instance |
boolean |
remove(int index)
Removes the value at the specified position from this list.
|
boolean |
removeLast()
Removes and returns the last value of this list (fast).
|
void |
removeRange(int fromIndex,
int toIndex)
Removes the values between
[fromIndex..toIndex[ |
void |
reset() |
boolean |
set(int index,
boolean value)
Replaces the value at the specified position in this list with the
specified value.
|
void |
setSize(int size)
Sets the size of this list.
|
int |
size()
Returns the number of values in this collection.
|
void |
sort(boolean ascending) |
XBooleanList |
subList(int fromIndex,
int toIndex)
Returns a view of the portion of this list between the specified
If the specified indexes are equal, the returned list is empty.
|
XCollection.Record |
tail()
Returns the tail record of this collection; it is the record such as
tail().getPrevious() holds the last collection value. |
void |
trimToSize()
Reduces the capacity of this list to the current size (minimize
storage space).
|
XBooleanList |
unmodifiable()
Returns the unmodifiable view associated to this collection.
|
boolean |
valueOf(XCollection.Record record)
Returns the collection value for the specified record.
|
addAll, containsAll, equals, hashCode, isEmpty, remove, removeAll, retainAll, reusableIterator, shared, supportsIteratorModifications, toArray, toArray, toString
addAll, containsAll, equals, hashCode, isEmpty, remove, removeAll, retainAll, toArray, toArray
reusableIterator, shared, supportsIteratorModifications
public XBooleanIndexedList()
public XBooleanIndexedList(int capacity)
capacity
- the initial capacity.public XBooleanIndexedList(XBooleanCollection values)
values
- the values to be placed into this list.public static XBooleanIndexedList newInstance()
XBooleanIndexedList
instanceXBooleanIndexedList
instance.public void setSize(int size)
null
elements are added; otherwise
the last elements are removed until the desired size is reached.size
- the new size.public final boolean get(int index)
get
in interface XBooleanList
index
- index of value to return.IndexOutOfBoundsException
- if (index < 0) ||
(index >= size())
public final boolean set(int index, boolean value)
set
in interface XBooleanList
index
- index of value to replace.value
- value to be stored at the specified position.IndexOutOfBoundsException
- if (index < 0) ||
(index >= size())
public final boolean add(boolean value)
add
in interface XBooleanCollection
add
in interface XBooleanList
add
in class XBooleanCollectionBase
value
- the value to be appended to this list.true
(as per the general contract of the
Collection.add
method).public final boolean getFirst()
NoSuchElementException
- if this list is empty.public final boolean getLast()
NoSuchElementException
- if this list is empty.public final void addLast(boolean value)
value
- the value to be added.public final boolean removeLast()
NoSuchElementException
- if this list is empty.public final void clear()
XBooleanCollectionBase
clear
in interface XBooleanCollection
clear
in interface XBooleanList
clear
in class XBooleanCollectionBase
public void reset()
public final boolean addAll(int index, XBooleanCollection values)
Note: If this method is used concurrent access must be synchronized (the list is no more thread-safe).
addAll
in interface XBooleanList
index
- the index at which to insert first value from the specified
collection.values
- the values to be inserted into this list.true
if this list changed as a result of the call;
false
otherwise.IndexOutOfBoundsException
- if (index < 0) ||
(index > size())
public final void add(int index, boolean value)
Note: If this method is used concurrent access must be synchronized (the list is no more thread-safe).
add
in interface XBooleanList
index
- the index at which the specified value is to be inserted.value
- the value to be inserted.IndexOutOfBoundsException
- if (index < 0) ||
(index > size())
public final boolean remove(int index)
Note: If this method is used concurrent access must be synchronized (the list is no more thread-safe).
remove
in interface XBooleanList
index
- the index of the value to removed.IndexOutOfBoundsException
- if (index < 0) ||
(index >= size())
public final void removeRange(int fromIndex, int toIndex)
[fromIndex..toIndex[ from
this list.
Note: If this method is used concurrent access must be synchronized
(the list is no more thread-safe).
fromIndex
- the beginning index, inclusive.toIndex
- the ending index, exclusive.IndexOutOfBoundsException
- if (fromIndex < 0) || (toIndex < 0)
|| (fromIndex > toIndex) || (toIndex > this.size())
public final int indexOf(boolean value)
indexOf
in interface XBooleanList
value
- the value to search for.public final int lastIndexOf(boolean value)
lastIndexOf
in interface XBooleanList
value
- the value to search for.public XBooleanIterator iterator()
iterator
in interface XBooleanCollection
iterator
in interface XBooleanList
iterator
in class XBooleanCollectionBase
public XBooleanListIterator listIterator()
listIterator
in interface XBooleanList
public XBooleanListIterator listIterator(int index)
listIterator
in interface XBooleanList
index
- the index of first value to be returned from the
list iterator (by a call to the next
method).IndexOutOfBoundsException
- if the index is out of range
[code](index < 0 || index > size())[/code]public final XBooleanList subList(int fromIndex, int toIndex)
indexOf
and
lastIndexOf
, and all of the algorithms in the
Collections
class can be applied to a subList.
The semantics of the list returned by this method become undefined if
the backing list (i.e., this list) is structurally modified in
any way other than via the returned list (structural modifications are
those that change the size of this list, or otherwise perturb it in such
a fashion that iterations in progress may yield incorrect results).subList
in interface XBooleanList
fromIndex
- low endpoint (inclusive) of the subList.toIndex
- high endpoint (exclusive) of the subList.IndexOutOfBoundsException
- if [code](fromIndex < 0 ||
toIndex > size || fromIndex > toIndex)[/code]public final void trimToSize()
public void sort(boolean ascending)
public final int size()
XBooleanCollectionBase
size
in interface XBooleanCollection
size
in interface XBooleanList
size
in class XBooleanCollectionBase
public final XCollection.Record head()
XBooleanCollectionBase
head().getNext()
holds the first collection value.head
in interface XBooleanCollection
head
in class XBooleanCollectionBase
public final XCollection.Record tail()
XBooleanCollectionBase
tail().getPrevious()
holds the last collection value.tail
in interface XBooleanCollection
tail
in class XBooleanCollectionBase
public final boolean valueOf(XCollection.Record record)
XBooleanCollectionBase
valueOf
in interface XBooleanCollection
valueOf
in class XBooleanCollectionBase
record
- the record whose current value is returned.public final void delete(XCollection.Record record)
XBooleanCollectionBase
Implementation must ensure that removing a record from the collection does not affect in any way the records preceding the record being removed (it might affect the next records though, e.g. in a list collection, the indices of the subsequent records will change).
delete
in interface XBooleanCollection
delete
in class XBooleanCollectionBase
record
- the record to be removed.public XBooleanList unmodifiable()
XBooleanCollectionBase
UnsupportedOperationException
being thrown.unmodifiable
in interface XBooleanCollection
unmodifiable
in class XBooleanCollectionBase
public final boolean contains(boolean value)
XBooleanCollectionBase
contains
in interface XBooleanCollection
contains
in interface XBooleanList
contains
in class XBooleanCollectionBase
value
- the value whose presence in this collection
is to be tested.true
if this collection contains the specified
value;false
otherwise.Copyright © 2019 Neeve Research, LLC. All Rights Reserved.