goodsjpi
Class PersistenceFactory

java.lang.Object
  |
  +--goodsjpi.PersistenceFactory

Direct Known Subclasses:

GoodsFactory

public abstract class PersistenceFactory

extends java.lang.Object

Class which defines the interface to a persistent store

Field Summary

protected static java.util.Properties	persistenceMap Mapping from class and interface types to persistent implementations of them this contains lines like persistence.root=my.root.object.type persistence.java.util.Set=goodsjpi.PersistentHashSet persistence.java.util.List=goodsjpi.PersistentArrayList
protected java.lang.Object	root Root object of the object store

Constructor Summary

protected

PersistenceFactory() Create the new persistence factory

Method Summary

static goodsjpi.PersistenceFactory	get() Get the instance of the persistence factory
static java.lang.Object	get(java.lang.Class required) Get an object instance which is compatible with the required class and is also persistent
static java.lang.Object	get(java.lang.Class required, java.lang.Class[] types, java.lang.Object[] params) Get an object instance which is compatible with the required class and is also persistent
protected static java.lang.Class	getImplClass(java.lang.Class required) Get the implementation type for the requested type
protected abstract java.lang.Object	getImplementation(java.lang.Class required) Handle on the datastore specific getImplementation method
protected abstract java.lang.Object	getImplementation(java.lang.Class required, java.lang.Class[] types, java.lang.Object[] params) Handle on the datastore specific getImplementation method
static java.lang.Object	getRoot() Get the root object of the data store
protected abstract java.lang.Object	getRootImpl() Handle on the datastore specific implementation of the getRoot method

Methods inherited from class java.lang.Object

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

Field Detail

root

protected java.lang.Object root

Root object of the object store

persistenceMap

protected static java.util.Properties persistenceMap

Mapping from class and interface types to persistent implementations of them this contains lines like persistence.root=my.root.object.type persistence.java.util.Set=goodsjpi.PersistentHashSet persistence.java.util.List=goodsjpi.PersistentArrayList

Constructor Detail

PersistenceFactory

protected PersistenceFactory()

Create the new persistence factory

Method Detail

get

public static final goodsjpi.PersistenceFactory get()

Get the instance of the persistence factory

get

public static final java.lang.Object get(java.lang.Class required)

Get an object instance which is compatible with the required class and is also persistent

get

public static final java.lang.Object get(java.lang.Class required,
                                         java.lang.Class[] types,
                                         java.lang.Object[] params)

Get an object instance which is compatible with the required class and is also persistent

Parameters:

types - array of types for the constructor

params - array of parameters for the constructor

getImplClass

protected static java.lang.Class getImplClass(java.lang.Class required)

Get the implementation type for the requested type

Parameters:

required - a class or interface type for which a persistent implementation is required

Returns:

the class type implementing persistence for the required type

getImplementation

protected abstract java.lang.Object getImplementation(java.lang.Class required)

Handle on the datastore specific getImplementation method

getImplementation

protected abstract java.lang.Object getImplementation(java.lang.Class required,
                                                      java.lang.Class[] types,
                                                      java.lang.Object[] params)

Handle on the datastore specific getImplementation method

Parameters:

types - array of types for the constuctor arguments

params - array of parameters for the constructor

getRoot

public static java.lang.Object getRoot()
                                throws java.io.IOException

Get the root object of the data store

Returns:

an object of type mapped by the entry persistence.root in the config file

java.io.IOException

getRootImpl

protected abstract java.lang.Object getRootImpl()
                                         throws java.io.IOException

Handle on the datastore specific implementation of the getRoot method

Returns:

an object of type mapped by the entry persistence.root in the config file

java.io.IOException