Package com.apple.foundationdb.async.rtree

Class ItemSlot

java.lang.Object

com.apple.foundationdb.async.rtree.ItemSlot

All Implemented Interfaces:

NodeSlot

public class ItemSlot
extends Object
implements NodeSlot

An item slot that is used by LeafNodes. Holds the actual data of the item as well as the items Hilbert value and its key.

Field Summary

Fields

Modifier and Type	Field	Description
static final int	SLOT_KEY_TUPLE_SIZE
static final int	SLOT_VALUE_TUPLE_SIZE

Constructor Summary

Constructors

Constructor	Description
ItemSlot(BigInteger hilbertValue, RTree.Point position, Tuple key, Tuple value)

Method Summary

Modifier and Type	Method	Description
int	compareHilbertValueAndKey(BigInteger hilbertValue, Tuple key)	Compare this node slot's (hilbertValue, key) pair with another (hilbertValue, key) pair.
BigInteger	getHilbertValue()
Tuple	getKey()
Tuple	getKeySuffix()
BigInteger	getLargestHilbertValue()
Tuple	getLargestKey()
RTree.Point	getPosition()
Tuple	getSlotKey(boolean storeHilbertValues)	Create a tuple for the key part of this slot.
Tuple	getSlotValue()	Create a tuple for the value part of this slot.
BigInteger	getSmallestHilbertValue()
Tuple	getSmallestKey()
Tuple	getValue()
String	toString()

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.apple.foundationdb.async.rtree.NodeSlot

compareLargestHilbertValueAndKey, compareSmallestHilbertValueAndKey, getLargestKeySuffix, getSmallestKeySuffix

Field Details

SLOT_KEY_TUPLE_SIZE

public static final int SLOT_KEY_TUPLE_SIZE

See Also:

• Constant Field Values

SLOT_VALUE_TUPLE_SIZE

public static final int SLOT_VALUE_TUPLE_SIZE

See Also:

• Constant Field Values

Constructor Details

ItemSlot

public ItemSlot(@Nonnull
 BigInteger hilbertValue,
 @Nonnull
 RTree.Point position,
 @Nonnull
 Tuple key,
 @Nonnull
 Tuple value)

Method Details

getHilbertValue

@Nonnull
public BigInteger getHilbertValue()

getKey

@Nonnull
public Tuple getKey()

getKeySuffix

@Nonnull
public Tuple getKeySuffix()

getValue

@Nonnull
public Tuple getValue()

getPosition

@Nonnull
public RTree.Point getPosition()

getSmallestHilbertValue

@Nonnull
public BigInteger getSmallestHilbertValue()

Specified by:

getSmallestHilbertValue in interface NodeSlot

getLargestHilbertValue

@Nonnull
public BigInteger getLargestHilbertValue()

Specified by:

getLargestHilbertValue in interface NodeSlot

getSmallestKey

@Nonnull
public Tuple getSmallestKey()

Specified by:

getSmallestKey in interface NodeSlot

getLargestKey

@Nonnull
public Tuple getLargestKey()

Specified by:

getLargestKey in interface NodeSlot

getSlotKey

@Nonnull
public Tuple getSlotKey(boolean storeHilbertValues)

Description copied from interface: NodeSlot

Create a tuple for the key part of this slot. This tuple is used when the slot is persisted in the database. Note that the serialization format is not yet finalized.

Specified by:

getSlotKey in interface NodeSlot

Parameters:

storeHilbertValues - indicator if the hilbert value should be encoded into the slot key or null-ed out

Returns:

a new tuple

getSlotValue

@Nonnull
public Tuple getSlotValue()

Description copied from interface: NodeSlot

Create a tuple for the value part of this slot. This tuple is used when the slot is persisted in the database. Note that the serialization format is not yet finalized.

Specified by:

getSlotValue in interface NodeSlot

Returns:

a new tuple

compareHilbertValueAndKey

public int compareHilbertValueAndKey(@Nonnull
 BigInteger hilbertValue,
 @Nonnull
 Tuple key)

Compare this node slot's (hilbertValue, key) pair with another (hilbertValue, key) pair. We do not use a proper Comparator as we don't want to wrap the pair in another object.

Parameters:

hilbertValue - Hilbert value

key - first key

Returns:

-1, 0, 1 if this node slot's pair is less/equal/greater than the pair passed in

toString

public String toString()

Overrides:

toString in class Object