com.sleepycat.bind.tuple
Class TupleTupleBinding

java.lang.Object
  |
  +--com.sleepycat.bind.tuple.TupleTupleBinding

All Implemented Interfaces:

EntityBinding

Direct Known Subclasses:

TupleTupleMarshalledBinding

public abstract class TupleTupleBinding

extends Object

implements EntityBinding

An abstract EntityBinding that treats an entity's key entry and data entry as tuples.

This class takes care of converting the entries to/from TupleInput and TupleOutput objects. Its three abstract methods must be implemented by a concrete subclass to convert between tuples and entity objects.

• entryToObject(TupleInput,TupleInput)
• objectToKey(Object,TupleOutput)
• objectToData(Object,TupleOutput)

Author:

Mark Hayes

Constructor Summary

TupleTupleBinding()
Creates a tuple-tuple entity binding.

Method Summary

Object	entryToObject(DatabaseEntry key, DatabaseEntry data) Converts key and data entry buffers into an entity Object.
abstract Object	entryToObject(TupleInput keyInput, TupleInput dataInput) Constructs an entity object from TupleInput key and data entries.
void	objectToData(Object object, DatabaseEntry data) Extracts the data entry from an entity Object.
abstract void	objectToData(Object object, TupleOutput output) Extracts a key tuple from an entity object.
void	objectToKey(Object object, DatabaseEntry key) Extracts the key entry from an entity Object.
abstract void	objectToKey(Object object, TupleOutput output) Extracts a key tuple from an entity object.

Methods inherited from class java.lang.Object

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

Constructor Detail

TupleTupleBinding

public TupleTupleBinding()

Creates a tuple-tuple entity binding.

Method Detail

entryToObject

public Object entryToObject(DatabaseEntry key,
                            DatabaseEntry data)

Description copied from interface: EntityBinding

Converts key and data entry buffers into an entity Object.

Specified by:

entryToObject in interface EntityBinding

Parameters:

key - is the source key entry.

data - is the source data entry.

Returns:

the resulting Object.

objectToKey

public void objectToKey(Object object,
                        DatabaseEntry key)

Description copied from interface: EntityBinding

Extracts the key entry from an entity Object.

Specified by:

objectToKey in interface EntityBinding

Parameters:

object - is the source Object.

key - is the destination entry buffer.

objectToData

public void objectToData(Object object,
                         DatabaseEntry data)

Description copied from interface: EntityBinding

Extracts the data entry from an entity Object.

Specified by:

objectToData in interface EntityBinding

Parameters:

object - is the source Object.

data - is the destination entry buffer.

entryToObject

public abstract Object entryToObject(TupleInput keyInput,
                                     TupleInput dataInput)

Constructs an entity object from TupleInput key and data entries.

Parameters:

keyInput - is the TupleInput key entry object.

dataInput - is the TupleInput data entry object.

Returns:

the entity object constructed from the key and data.

objectToKey

public abstract void objectToKey(Object object,
                                 TupleOutput output)

Extracts a key tuple from an entity object.

Parameters:

object - is the entity object.

output - is the TupleOutput to which the key should be written.

objectToData

public abstract void objectToData(Object object,
                                  TupleOutput output)

Extracts a key tuple from an entity object.

Parameters:

object - is the entity object.

output - is the TupleOutput to which the data should be written.