Package org.apache.activemq.store.kahadb.disk.util

Class VariableMarshaller<T>

java.lang.Object

org.apache.activemq.store.kahadb.disk.util.VariableMarshaller<T>

Type Parameters:

T -

All Implemented Interfaces:

Marshaller<T>

Direct Known Subclasses:

BTreeNode.Marshaller, ListNode.NodeMarshaller, MessageDatabase.MessageKeysMarshaller, MessageDatabase.MessageStoreStatisticsMarshaller, MessageDatabase.StoredDestinationMarshaller, TempMessageDatabase.MessageKeysMarshaller, TempMessageDatabase.StoredDestinationMarshaller

public abstract class VariableMarshaller<T>
extends Object
implements Marshaller<T>

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

Author:

chirino

Constructor Summary

Constructors

Constructor	Description
VariableMarshaller()

Method Summary

Modifier and Type	Method	Description
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.activemq.store.kahadb.disk.util.Marshaller

readPayload, writePayload

Constructor Details

VariableMarshaller

public VariableMarshaller()

Method Details

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.