com.sleepycat.bind.tuple

Class PackedIntegerBinding

java.lang.Object

com.sleepycat.bind.tuple.TupleBase<E>

com.sleepycat.bind.tuple.TupleBinding<java.lang.Integer>

com.sleepycat.bind.tuple.PackedIntegerBinding

All Implemented Interfaces:

EntryBinding<java.lang.Integer>

public class PackedIntegerBinding
extends TupleBinding<java.lang.Integer>

A concrete TupleBinding for an unsorted Integer primitive wrapper or an unsorted int primitive, that stores the value in the smallest number of bytes possible.

There are two ways to use this class:

1. When using the com.sleepycat.db package directly, the static methods in this class can be used to convert between primitive values and DatabaseEntry objects.
2. When using the com.sleepycat.collections package, an instance of this class can be used with any stored collection.

See Also:

Integer Formats

Constructor Summary

Constructors

Constructor and Description
PackedIntegerBinding()

Method Summary

Modifier and Type	Method and Description
static int	entryToInt(DatabaseEntry entry) Converts an entry buffer into a simple int value.
java.lang.Integer	entryToObject(TupleInput input) Constructs a key or data object from a TupleInput entry.
static void	intToEntry(int val, DatabaseEntry entry) Converts a simple int value into an entry buffer, using PackedInteger format.
void	objectToEntry(java.lang.Integer object, TupleOutput output) Converts a key or data object to a tuple entry.

Methods inherited from class com.sleepycat.bind.tuple.TupleBinding

entryToObject, getPrimitiveBinding, objectToEntry

Methods inherited from class com.sleepycat.bind.tuple.TupleBase

entryToInput, getTupleBufferSize, inputToEntry, newOutput, newOutput, outputToEntry, setTupleBufferSize

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

PackedIntegerBinding

public PackedIntegerBinding()

Method Detail

entryToObject

public java.lang.Integer entryToObject(TupleInput input)

Description copied from class: TupleBinding

Constructs a key or data object from a TupleInput entry.

Specified by:

entryToObject in class TupleBinding<java.lang.Integer>

Parameters:

input - is the tuple key or data entry.

Returns:

the key or data object constructed from the entry.

objectToEntry

public void objectToEntry(java.lang.Integer object,
                          TupleOutput output)

Description copied from class: TupleBinding

Converts a key or data object to a tuple entry.

Specified by:

objectToEntry in class TupleBinding<java.lang.Integer>

Parameters:

object - is the key or data object.

output - is the tuple entry to which the key or data should be written.

entryToInt

public static int entryToInt(DatabaseEntry entry)

Converts an entry buffer into a simple int value.

Parameters:

entry - is the source entry buffer.

Returns:

the resulting value.

intToEntry

public static void intToEntry(int val,
                              DatabaseEntry entry)

Converts a simple int value into an entry buffer, using PackedInteger format.

Parameters:

val - is the source value.

entry - is the destination entry buffer.