water.persist

Class EagerPersistBase

java.lang.Object

water.persist.Persist

water.persist.EagerPersistBase

Direct Known Subclasses:

PersistEagerHTTP, PersistH2O

public abstract class EagerPersistBase
extends Persist

Parent class for Persist implementations that do eager-load (data is loaded at import time as opposed to parse time).

Nested Class Summary

Nested classes/interfaces inherited from class water.persist.Persist

Persist.PersistEntry

Constructor Summary

Constructors

Constructor and Description
EagerPersistBase()

Method Summary

Modifier and Type	Method and Description
void	cleanUp() Delete persistent storage on startup and shutdown
void	delete(Value v) Reclaim space from a previously stored Value
byte[]	load(Value v) Load a previously stored Value
void	store(Value v) Store a Value into persistent storage, consuming some storage space.
Key	uriToKey(java.net.URI uri) Transform given uri into file vector holding file name.

Methods inherited from class water.persist.Persist

calcTypeaheadMatches, canHandle, create, delete, exists, getHomeDirectory, getParent, getTotalSpace, getUsableSpace, importFiles, isDirectory, isSeekableOpenSupported, key2Str, length, list, load, mkdirs, open, openSeekable, rename, wrapSeekable

Methods inherited from class java.lang.Object

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

Constructor Detail

EagerPersistBase

public EagerPersistBase()

Method Detail

uriToKey

public Key uriToKey(java.net.URI uri)

Description copied from class: Persist

Transform given uri into file vector holding file name.

Specified by:

uriToKey in class Persist

store

public void store(Value v)

Description copied from class: Persist

Store a Value into persistent storage, consuming some storage space.

Specified by:

store in class Persist

delete

public void delete(Value v)

Description copied from class: Persist

Reclaim space from a previously stored Value

Specified by:

delete in class Persist

cleanUp

public void cleanUp()

Description copied from class: Persist

Delete persistent storage on startup and shutdown

Specified by:

cleanUp in class Persist

load

public byte[] load(Value v)
            throws java.io.IOException

Description copied from class: Persist

Load a previously stored Value

Specified by:

load in class Persist

Throws:

java.io.IOException