net.jinx.db.transaction.hierarchy
Class HierarchySnapshotManager

java.lang.Object
  net.jinx.db.transaction.hierarchy.HierarchySnapshotManager

All Implemented Interfaces:

SnapshotManager

public class HierarchySnapshotManager
extends java.lang.Object
implements SnapshotManager

SnapshotManager wrapper for a Hierarchy.

Constructor Summary

HierarchySnapshotManager()

Method Summary

void	commit() Commits the current changes to the data Object, indicating that the most recent Transaction was successful.
java.lang.Object	getData() Provides a Hierarchy to manipulate.
java.lang.Object	getQueryData() Provides an ImmutableHierarchy to query.
void	readSnapshot(java.io.InputStream in) Reads a snapshot of the data Object from in, replacing the current data Object, or overriding all it's internal data.
void	rollback() Indicates that the changes to the data Object since the most recent call to commit() should be discarded.
void	writeSnapshot(java.io.OutputStream out) Writes a snapshot of the data Object to out.

Methods inherited from class java.lang.Object

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

Constructor Detail

HierarchySnapshotManager

public HierarchySnapshotManager()

Method Detail

getData

public java.lang.Object getData()

Provides a Hierarchy to manipulate.

Specified by:

getData in interface SnapshotManager

Returns:

a Hierarchy.

getQueryData

public java.lang.Object getQueryData()

Provides an ImmutableHierarchy to query.

Specified by:

getQueryData in interface SnapshotManager

Returns:

an ImmutableHierarchy.

writeSnapshot

public void writeSnapshot(java.io.OutputStream out)
                   throws java.io.IOException

Description copied from interface: SnapshotManager

Writes a snapshot of the data Object to out. This can be in any format desired.

Specified by:

writeSnapshot in interface SnapshotManager

Parameters:

out - the OutputStream to write the snapshot to.

Throws:

java.io.IOException

readSnapshot

public void readSnapshot(java.io.InputStream in)
                  throws java.io.IOException

Description copied from interface: SnapshotManager

Reads a snapshot of the data Object from in, replacing the current data Object, or overriding all it's internal data. This can be in any format desired.

Specified by:

readSnapshot in interface SnapshotManager

Parameters:

in - the InputStream to read the snapshot from.

Throws:

java.io.IOException

commit

public void commit()

Description copied from interface: SnapshotManager

Commits the current changes to the data Object, indicating that the most recent Transaction was successful.

Specified by:

commit in interface SnapshotManager

rollback

public void rollback()

Description copied from interface: SnapshotManager

Indicates that the changes to the data Object since the most recent call to commit() should be discarded.

Specified by:

rollback in interface SnapshotManager