org.apache.kahadb.util
Class VariableMarshaller<T>

java.lang.Object
  org.apache.kahadb.util.VariableMarshaller<T>

Type Parameters:

T -

All Implemented Interfaces:

Marshaller<T>

Direct Known Subclasses:

BTreeNode.Marshaller, ListNode.NodeMarshaller, ObjectMarshaller

public abstract class VariableMarshaller<T>
extends java.lang.Object
implements Marshaller<T>

Convenience base class for Marshaller implementations which do not deepCopy and which use variable size encodings.

Author:

chirino

Constructor Summary

VariableMarshaller()

Method Summary

T	deepCopy(T source)
int	getFixedSize()
boolean	isDeepCopySupported()

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.kahadb.util.Marshaller

readPayload, writePayload

Constructor Detail

VariableMarshaller

public VariableMarshaller()

Method Detail

getFixedSize

public int getFixedSize()

Specified by:

getFixedSize in interface Marshaller<T>

Returns:

-1 if the object do not always marshall to a fixed size, otherwise return that fixed size.

isDeepCopySupported

public boolean isDeepCopySupported()

Specified by:

isDeepCopySupported in interface Marshaller<T>

Returns:

true if the Marshaller.deepCopy(Object) operations is supported.

deepCopy

public T deepCopy(T source)

Specified by:

deepCopy in interface Marshaller<T>

Returns:

a deep copy of the source object.