com.bigdata.btree.raba

Class MutableValuesRaba

java.lang.Object

com.bigdata.btree.raba.AbstractRaba

com.bigdata.btree.raba.MutableValuesRaba

All Implemented Interfaces:

IRaba, Iterable<byte[]>

public class MutableValuesRaba
extends AbstractRaba
implements IRaba

Flyweight implementation for wrapping a byte[][] with fromIndex and toIndex.

Version:

$Id$

Author:

Bryan Thompson

See Also:

MutableValueBuffer

Field Summary

Fields inherited from class com.bigdata.btree.raba.AbstractRaba

a, capacity, fromIndex, toIndex

Constructor Summary

Constructors

Constructor and Description
MutableValuesRaba(byte[][] a) Create a view of a byte[][].
MutableValuesRaba(int fromIndex, int toIndex, byte[][] a) Create a view of a byte[][] slice.
MutableValuesRaba(int fromIndex, int toIndex, int capacity, byte[][] a) Create a view from a slice of a byte[][].

Method Summary

Methods

Modifier and Type	Method and Description
boolean	isKeys() No.
boolean	isReadOnly() No - This view is mutable.
MutableValuesRaba	resize(int n) Resize the buffer, copying up to n references to the existing data into a new view backed by a new byte[][].

Methods inherited from class com.bigdata.btree.raba.AbstractRaba

add, add, add, assertNotFull, assertNotReadOnly, assertNullAllowed, capacity, copy, get, isEmpty, isFull, isNull, iterator, length, rangeCheck, search, set, size, toString, toString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface com.bigdata.btree.raba.IRaba

add, add, add, capacity, copy, get, isEmpty, isFull, isNull, iterator, length, search, set, size

Constructor Detail

MutableValuesRaba

public MutableValuesRaba(byte[][] a)

Create a view of a byte[][]. All elements in the array are visible in the view.

Parameters:

a - The backing byte[][].

MutableValuesRaba

public MutableValuesRaba(int fromIndex,
                 int toIndex,
                 byte[][] a)

Create a view of a byte[][] slice. The slice will include only those elements between the fromIndex and the toIndex. The capacity will be the #of elements. AbstractRaba.isFull() will report true .

Parameters:

fromIndex - The index of the first visible in the view (inclusive lower bound).

toIndex - The index of the first element beyond the view (exclusive upper bound). If toIndex == fromIndex then the view is empty.

a - The backing byte[][].

MutableValuesRaba

public MutableValuesRaba(int fromIndex,
                 int toIndex,
                 int capacity,
                 byte[][] a)

Create a view from a slice of a byte[][].

Parameters:

fromIndex - The index of the first element in the byte[][] which is visible in the view (inclusive lower bound).

toIndex - The index of the first element in the byte[][] beyond the view (exclusive upper bound).

capacity - The #of elements which may be used in the view.

a - The backing byte[][].

Method Detail

isReadOnly

public boolean isReadOnly()

No - This view is mutable.

Specified by:

isReadOnly in interface IRaba

isKeys

public final boolean isKeys()

No.

Specified by:

isKeys in interface IRaba

Returns:

true if the IRaba represents B+Tree keys and false if it represents B+Tree values.

resize

public MutableValuesRaba resize(int n)

Description copied from class: AbstractRaba

Resize the buffer, copying up to n references to the existing data into a new view backed by a new byte[][]. fromIndex will be zero in the new view.

This method requires a public constructor with the following signature:

 ctor(byte[][])
 

Overrides:

resize in class AbstractRaba

Parameters:

n - The size of the new buffer.

Returns:

The new view, backed by a new byte[][].