Package org.eclipse.jgit.util
Class BlockList<T>
- java.lang.Object
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- java.util.AbstractCollection<E>
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- java.util.AbstractList<T>
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- org.eclipse.jgit.util.BlockList<T>
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- Type Parameters:
T
- type of list element.
- All Implemented Interfaces:
java.lang.Iterable<T>
,java.util.Collection<T>
,java.util.List<T>
public class BlockList<T> extends java.util.AbstractList<T>
Random access list that allocates entries in blocks.Unlike
ArrayList
, this type does not need to reallocate the internal array in order to expand the capacity of the list. Access to any element is constant time, but requires two array lookups instead of one.To handle common usages,
add(Object)
anditerator()
use internal code paths to amortize out the second array lookup, making addition and simple iteration closer to one array operation per element processed.Similar to
ArrayList
, adding or removing from any position except the end of the list requires O(N) time to copy all elements between the modification point and the end of the list. Applications are strongly encouraged to not use this access pattern with this list implementation.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description void
add(int index, T element)
boolean
add(T element)
void
addAll(BlockList<T> src)
Quickly append all elements of another BlockList.void
addAll(T[] src, int srcIdx, int srcCnt)
Quickly append all elements from an array.void
clear()
T
get(int index)
java.util.Iterator<T>
iterator()
T
remove(int index)
T
set(int index, T element)
int
size()
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Methods inherited from class java.util.AbstractList
addAll, equals, hashCode, indexOf, lastIndexOf, listIterator, listIterator, removeRange, subList
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Methods inherited from class java.util.AbstractCollection
addAll, contains, containsAll, isEmpty, remove, removeAll, retainAll, toArray, toArray, toString
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Method Detail
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size
public int size()
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clear
public void clear()
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get
public T get(int index)
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addAll
public void addAll(BlockList<T> src)
Quickly append all elements of another BlockList.- Parameters:
src
- the list to copy elements from.
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addAll
public void addAll(T[] src, int srcIdx, int srcCnt)
Quickly append all elements from an array.- Parameters:
src
- the source array.srcIdx
- first index to copy.srcCnt
- number of elements to copy.
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add
public boolean add(T element)
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add
public void add(int index, T element)
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remove
public T remove(int index)
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