public class PackedIntegerBinding extends TupleBinding<java.lang.Integer>
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:
com.sleepycat.db package directly, the static
methods in this class can be used to convert between primitive values and
DatabaseEntry objects.com.sleepycat.collections package, an instance of
this class can be used with any stored collection.| Constructor and Description |
|---|
PackedIntegerBinding() |
| 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. |
protected TupleOutput |
getTupleOutput(java.lang.Integer object)
Returns an empty TupleOutput instance that will be used by the tuple
binding or key creator.
|
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.
|
entryToObject, getPrimitiveBinding, objectToEntryentryToInput, getTupleBufferSize, inputToEntry, newOutput, newOutput, outputToEntry, setTupleBufferSizepublic java.lang.Integer entryToObject(TupleInput input)
TupleBindingTupleInput entry.entryToObject in class TupleBinding<java.lang.Integer>input - is the tuple key or data entry.public void objectToEntry(java.lang.Integer object,
TupleOutput output)
TupleBindingobjectToEntry in class TupleBinding<java.lang.Integer>object - is the key or data object.output - is the tuple entry to which the key or data should be
written.protected TupleOutput getTupleOutput(java.lang.Integer object)
TupleBaseThe default implementation of this method creates a new TupleOutput
with an initial buffer size that can be changed using the TupleBase.setTupleBufferSize(int) method.
This method may be overridden to return a TupleOutput instance. For
example, an instance per thread could be created and returned by this
method. If a TupleOutput instance is reused, be sure to call its
FastOutputStream.reset() method before each
use.
getTupleOutput in class TupleBase<java.lang.Integer>object - is the object to be written to the tuple output, and may
be used by subclasses to determine the size of the output buffer.TupleBase.setTupleBufferSize(int)public static int entryToInt(DatabaseEntry entry)
int value.entry - is the source entry buffer.public static void intToEntry(int val,
DatabaseEntry entry)
int value into an entry buffer, using
PackedInteger format.val - is the source value.entry - is the destination entry buffer.Copyright (c) 1996, 2016 Oracle and/or its affiliates. All rights reserved.