com.sleepycat.bind.tuple
Class TupleTupleBinding<E>

java.lang.Object
  com.sleepycat.bind.tuple.TupleBase<E>
      com.sleepycat.bind.tuple.TupleTupleBinding<E>

All Implemented Interfaces:

EntityBinding<E>

Direct Known Subclasses:

TupleTupleMarshalledBinding

public abstract class TupleTupleBinding<E>
extends TupleBase<E>
implements EntityBinding<E>

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)

TupleTupleBinding

public TupleTupleBinding()

Creates a tuple-tuple entity binding.

entryToObject

public E 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<E>

Parameters:

key - is the source key entry.

data - is the source data entry.

Returns:

the resulting Object.

objectToKey

public void objectToKey(E object,
                        DatabaseEntry key)

Description copied from interface: EntityBinding

Extracts the key entry from an entity Object.

Specified by:

objectToKey in interface EntityBinding<E>

Parameters:

object - is the source Object.

key - is the destination entry buffer.

objectToData

public void objectToData(E object,
                         DatabaseEntry data)

Description copied from interface: EntityBinding

Extracts the data entry from an entity Object.

Specified by:

objectToData in interface EntityBinding<E>

Parameters:

object - is the source Object.

data - is the destination entry buffer.

entryToObject

public abstract E 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(E 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(E 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.