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com.sleepycat.bind.serial
Class TupleSerialBinding

java.lang.Object
  com.sleepycat.bind.tuple.TupleBase
      com.sleepycat.bind.serial.TupleSerialBinding

All Implemented Interfaces:

EntityBinding

Direct Known Subclasses:

TupleSerialMarshalledBinding

public abstract class TupleSerialBinding

extends TupleBase

implements EntityBinding

An abstract EntityBinding that treats an entity's key entry as a tuple and its data entry as a serialized object.

This class takes care of serializing and deserializing the data entry, and converting the key entry to/from TupleInput and TupleOutput objects. Its three abstract methods must be implemented by a concrete subclass to convert these objects to/from an entity object.

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

Field Summary

protected SerialBinding

dataBinding

Constructor Summary

TupleSerialBinding(ClassCatalog classCatalog, Class baseClass)
Creates a tuple-serial entity binding.

TupleSerialBinding(SerialBinding dataBinding)
Creates a tuple-serial 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, Object dataInput) Constructs an entity object from TupleInput key entry and deserialized data entry objects.
abstract Object	objectToData(Object object) Extracts a data object from an entity object.
void	objectToData(Object object, DatabaseEntry data) Extracts the data entry from an entity Object.
void	objectToKey(Object object, DatabaseEntry key) Extracts the key entry from an entity Object.
abstract void	objectToKey(Object object, TupleOutput keyOutput) Extracts a key tuple from an entity object.

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

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

Methods inherited from class java.lang.Object

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

Field Detail

dataBinding

protected SerialBinding dataBinding

Constructor Detail

TupleSerialBinding

public TupleSerialBinding(ClassCatalog classCatalog,
                          Class baseClass)

Creates a tuple-serial entity binding.

Parameters:

classCatalog - is the catalog to hold shared class information and for a database should be a StoredClassCatalog.

baseClass - is the base class.

TupleSerialBinding

public TupleSerialBinding(SerialBinding dataBinding)

Creates a tuple-serial entity binding.

Parameters:

dataBinding - is the data 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,
                                     Object dataInput)

Constructs an entity object from TupleInput key entry and deserialized data entry objects.

Parameters:

keyInput - is the TupleInput key entry object.

dataInput - is the deserialized data entry object.

Returns:

the entity object constructed from the key and data.

objectToKey

public abstract void objectToKey(Object object,
                                 TupleOutput keyOutput)

Extracts a key tuple from an entity object.

Parameters:

object - is the entity object.

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

objectToData

public abstract Object objectToData(Object object)

Extracts a data object from an entity object.

Parameters:

object - is the entity object.

Returns:

the deserialized data object.