com::sleepycat::bind::tuple::DoubleBinding Class Reference

Inheritance diagram for com::sleepycat::bind::tuple::DoubleBinding:

Public Member Functions
Object	entryToObject (TupleInput input)
void	objectToEntry (Object object, TupleOutput output)
Static Public Member Functions
static double	entryToDouble (DatabaseEntry entry)
static void	doubleToEntry (double val, DatabaseEntry entry)
Protected Member Functions
TupleOutput	getTupleOutput (Object object)

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Detailed Description

A concrete TupleBinding for a Double primitive wrapper or a double primitive.

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. The easiest way to obtain a binding instance is with the TupleBinding#getPrimitiveBinding method.

Definition at line 29 of file DoubleBinding.java.

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Member Function Documentation

static void com::sleepycat::bind::tuple::DoubleBinding::doubleToEntry (  double  val, DatabaseEntry  entry )  [inline, static]

Converts a simple double value into an entry buffer. Parameters: val  is the source value. entry  is the destination entry buffer. Definition at line 70 of file DoubleBinding.java. References com::sleepycat::bind::tuple::TupleBase::outputToEntry().

static double com::sleepycat::bind::tuple::DoubleBinding::entryToDouble (  DatabaseEntry  entry  )  [inline, static]

Converts an entry buffer into a simple double value. Parameters: entry  is the source entry buffer. Returns: the resulting value. Definition at line 58 of file DoubleBinding.java. References com::sleepycat::bind::tuple::TupleBase::entryToInput().

Object com::sleepycat::bind::tuple::DoubleBinding::entryToObject (  TupleInput  input  )  [inline, virtual]

Constructs a key or data object from a TupleInput entry. Parameters: input  is the tuple key or data entry. Returns: the key or data object constructed from the entry. Implements com::sleepycat::bind::tuple::TupleBinding. Definition at line 34 of file DoubleBinding.java. References com::sleepycat::bind::tuple::TupleInput::readDouble().

TupleOutput com::sleepycat::bind::tuple::DoubleBinding::getTupleOutput (  Object  object  )  [inline, protected]

Returns an empty TupleOutput instance that will be used by the tuple binding or key creator. The default implementation of this method creates a new TupleOutput with an initial buffer size that can be changed using the setTupleBufferSize 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 com.sleepycat.util.FastOutputStream#reset method before each use. Parameters: 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. Returns: an empty TupleOutput instance. See also: setTupleBufferSize Reimplemented from com::sleepycat::bind::tuple::TupleBase. Definition at line 46 of file DoubleBinding.java.

void com::sleepycat::bind::tuple::DoubleBinding::objectToEntry (  Object  object, TupleOutput  output )  [inline, virtual]

Converts a key or data object to a tuple entry. Parameters: object  is the key or data object. output  is the tuple entry to which the key or data should be written. Implements com::sleepycat::bind::tuple::TupleBinding. Definition at line 40 of file DoubleBinding.java. References com::sleepycat::bind::tuple::TupleOutput::writeDouble().

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The documentation for this class was generated from the following file:

• /home/huihoo/src/db/db-4.4.16/java/src/com/sleepycat/bind/tuple/DoubleBinding.java

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