org.netbeans.mdr.persistence

Interface Streamable

All Known Implementing Classes:

BigKeyPage, Btree, BtreePage, CounterIndex, FixedKeyPage, MofidIndex, MultivaluedBtree, MultivaluedOrderedBtree, ShrinkablePage, SinglevaluedBtree, VarKeyPage, VarRecordPage

public interface Streamable

Every implementation must provide a constructor without parameters. Cache should be able to populate the object using restore method.

Version:

1.0

Author:

Pavel Buzek

Method Summary

Methods

Modifier and Type	Method and Description
void	read(java.io.InputStream inputStream) Restore state of the Storable object from the stream.
void	write(java.io.OutputStream outputStream) This method will be used to move changed object from storage cache to the persistent part of storage.

Method Detail

write

void write(java.io.OutputStream outputStream)
           throws StorageException

This method will be used to move changed object from storage cache to the persistent part of storage. It writes the object`s state (set of attributes) in the stream as an array of bytes, for example in textual representation.

Parameters:

outputStream - OutputStream that holds value of a Streamable object

Throws:

StorageException

read

void read(java.io.InputStream inputStream)
          throws StorageException

Restore state of the Storable object from the stream.

Parameters:

inputStream - InputStream that represents an internal representation of fields of a Streamable object in which it was written by write method

Throws:

StorageException