org.datanucleus.store
Class StoreDataManager

java.lang.Object
  org.datanucleus.store.StoreDataManager

public class StoreDataManager
extends java.lang.Object

StoreData Cache Manager

Field Summary

protected static Localiser	LOCALISER
protected MultiMap	savedStoreDataByAppIdClass the memory image of schema data beforing running it
protected java.util.Map	savedStoreDataByClass the memory image of schema data beforing running it
protected MultiMap	storeDataByAppIdClass Map of all managed store data using Application Identity, keyed by the app id PK class
protected java.util.Map	storeDataByClass Map of all managed store data, keyed by the class/field name.

Constructor Summary

StoreDataManager()

Method Summary

void	begin() Begin a transaction that changes the StoreData cache
void	clear() Clear the cache
void	commit() Commit the transaction changes to the StoreData cache
StoreData	get(AbstractMemberMetaData apmd) Get the StoreData by the given field/property
StoreData	get(java.lang.String className) Get the StoreData by the given className
java.util.Collection	getByPrimaryKeyClass(java.lang.String className) Get the Collection of StoreData that currently uses this primary key class
java.util.Collection	getManagedStoreData() Accessor for the StoreData currently managed by this store.
StoreData[]	getStoreDataForProperties(java.lang.String key1, java.lang.Object value1, java.lang.String key2, java.lang.Object value2) Convenience accessor for all store data where property 1 has value1 and property 2 has value2.
boolean	managesClass(java.lang.String className) Accessor for whether the specified class is managed currently
protected void	registerStoreData(StoreData data) Method to register some data with the store.
void	rollback() Rollbacks the transaction changes to the StoreData cache
int	size() Acessor to the number of StoreData in cache

Methods inherited from class java.lang.Object

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

Field Detail

LOCALISER

protected static final Localiser LOCALISER

storeDataByClass

protected java.util.Map storeDataByClass

Map of all managed store data, keyed by the class/field name.

storeDataByAppIdClass

protected MultiMap storeDataByAppIdClass

Map of all managed store data using Application Identity, keyed by the app id PK class

savedStoreDataByClass

protected java.util.Map savedStoreDataByClass

the memory image of schema data beforing running it

savedStoreDataByAppIdClass

protected MultiMap savedStoreDataByAppIdClass

the memory image of schema data beforing running it

Constructor Detail

StoreDataManager

public StoreDataManager()

Method Detail

clear

public void clear()

Clear the cache

registerStoreData

protected void registerStoreData(StoreData data)

Method to register some data with the store. This will also register the data with the starter process.

Parameters:

data - The StoreData to add

getStoreDataForProperties

public StoreData[] getStoreDataForProperties(java.lang.String key1,
                                             java.lang.Object value1,
                                             java.lang.String key2,
                                             java.lang.Object value2)

Convenience accessor for all store data where property 1 has value1 and property 2 has value2. Uses equals() on the values. Doesnt cater for null values.

Parameters:

key1 - Property 1 name

value1 - Property 1 value

key2 - Property 2 name

value2 - Property 2 value

Returns:

Store data with the specified property values

managesClass

public boolean managesClass(java.lang.String className)

Accessor for whether the specified class is managed currently

Parameters:

className - The name of the class

Returns:

Whether it is managed

getManagedStoreData

public java.util.Collection getManagedStoreData()

Accessor for the StoreData currently managed by this store.

Returns:

Collection of the StoreData being managed

get

public StoreData get(java.lang.String className)

Get the StoreData by the given className

Parameters:

className - the fully qualified class name

Returns:

the StoreData

get

public StoreData get(AbstractMemberMetaData apmd)

Get the StoreData by the given field/property

Parameters:

apmd - the field/property

Returns:

the StoreData

getByPrimaryKeyClass

public java.util.Collection getByPrimaryKeyClass(java.lang.String className)

Get the Collection of StoreData that currently uses this primary key class

Parameters:

className - the primary key class name

Returns:

the Collection of StoreData

size

public int size()

Acessor to the number of StoreData in cache

Returns:

the number of StoreData in cache

begin

public void begin()

Begin a transaction that changes the StoreData cache

rollback

public void rollback()

Rollbacks the transaction changes to the StoreData cache

commit

public void commit()

Commit the transaction changes to the StoreData cache