org.jpox.sco.simple
Class Properties

java.lang.Object
  java.util.Dictionary<K,V>
      java.util.Hashtable<java.lang.Object,java.lang.Object>
          java.util.Properties
              org.jpox.sco.simple.Properties

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable, java.util.Map<java.lang.Object,java.lang.Object>, SCO, SCOContainer, SCOMap

public class Properties
extends java.util.Properties
implements SCOMap, java.lang.Cloneable

A mutable second-class Properties object. This is the simplified form that intercepts mutators and marks the field as dirty.

Version:

$Revision: 1.2 $

See Also:

Serialized Form

Field Summary

protected boolean	allowNulls
protected java.util.Properties	delegate The internal "delegate".
protected java.lang.String	fieldName
protected int	fieldNumber
protected static Localiser	LOCALISER
protected java.lang.Object	owner
protected StateManager	ownerSM

Fields inherited from class java.util.Properties

defaults

Constructor Summary

Properties(StateManager ownerSM, java.lang.String fieldName)
Constructor

Method Summary

void	attachCopy(java.lang.Object value) Method to return an attached copy of the passed (detached) value.
void	clear() Method to clear the Hashtable
java.lang.Object	clone() Creates and returns a copy of this object.
boolean	containsKey(java.lang.Object key) Method to return if the map contains this key
boolean	containsValue(java.lang.Object value) Method to return if the map contains this value.
java.lang.Object	detachCopy(FetchPlanState state) Method to return a detached copy of the container.
java.util.Set	entrySet() Accessor for the set of entries in the Map.
boolean	equals(java.lang.Object o) Method to check the equality of this map, and another.
void	flush() Method to flush the changes to the datastore when operating in queued mode.
java.lang.Object	get(java.lang.Object key) Accessor for the value stored against a key.
java.lang.String	getFieldName() Accessor for the field name that this Hashtable relates to.
java.lang.Object	getOwner() Accessor for the owner that this Hashtable relates to.
java.lang.Object	getValue() Accessor for the unwrapped value that we are wrapping.
int	hashCode() Method to generate a hashcode for this Map.
void	initialise() Method to initialise the SCO for use.
void	initialise(java.lang.Object o, boolean forInsert, boolean forUpdate) Method to initialise the SCO from an existing value.
boolean	isEmpty() Method to return if the Map is empty.
java.util.Set	keySet() Accessor for the set of keys in the Map.
void	load() Method to effect the load of the data in the SCO.
void	makeDirty() Utility to mark the object as dirty
java.lang.Object	put(java.lang.Object key, java.lang.Object value) Method to add a value against a key to the Hashtable
void	putAll(java.util.Map m) Method to add the specified Map's values under their keys here.
java.lang.Object	remove(java.lang.Object key) Method to remove the value for a key from the Hashtable
int	size() Method to return the size of the Map.
void	unsetOwner() Method to unset the owner and field details.
void	updateEmbeddedKey(java.lang.Object key, int fieldNumber, java.lang.Object newValue) Method to update an embedded key in this map.
void	updateEmbeddedValue(java.lang.Object value, int fieldNumber, java.lang.Object newValue) Method to update an embedded value in this map.
java.util.Collection	values() Accessor for the set of values in the Map.
protected java.lang.Object	writeReplace() The writeReplace method is called when ObjectOutputStream is preparing to write the object to the stream.

Methods inherited from class java.util.Properties

getProperty, getProperty, list, list, load, loadFromXML, propertyNames, save, setProperty, store, storeToXML, storeToXML

Methods inherited from class java.util.Hashtable

contains, elements, keys, rehash, toString

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

LOCALISER

protected static final Localiser LOCALISER

owner

protected transient java.lang.Object owner

ownerSM

protected transient StateManager ownerSM

fieldName

protected transient java.lang.String fieldName

fieldNumber

protected transient int fieldNumber

allowNulls

protected transient boolean allowNulls

delegate

protected java.util.Properties delegate

The internal "delegate".

Constructor Detail

Properties

public Properties(StateManager ownerSM,
                  java.lang.String fieldName)

Constructor

Parameters:

ownerSM - the owner of this Map

fieldName - the declared field name

Method Detail

initialise

public void initialise(java.lang.Object o,
                       boolean forInsert,
                       boolean forUpdate)

Method to initialise the SCO from an existing value.

Specified by:

initialise in interface SCO

Parameters:

o - Object to set value using.

forInsert - Whether the object needs inserting in the datastore with this value

forUpdate - Whether to update the datastore with this value

initialise

public void initialise()

Method to initialise the SCO for use.

Specified by:

initialise in interface SCO

getValue

public java.lang.Object getValue()

Accessor for the unwrapped value that we are wrapping.

Specified by:

getValue in interface SCO

Returns:

The unwrapped value

load

public void load()

Method to effect the load of the data in the SCO. Used when the SCO supports lazy-loading to tell it to load all now.

Specified by:

load in interface SCOContainer

flush

public void flush()

Method to flush the changes to the datastore when operating in queued mode. Does nothing in "direct" mode.

Specified by:

flush in interface SCOContainer

updateEmbeddedKey

public void updateEmbeddedKey(java.lang.Object key,
                              int fieldNumber,
                              java.lang.Object newValue)

Method to update an embedded key in this map.

Specified by:

updateEmbeddedKey in interface SCOMap

Parameters:

key - The key

fieldNumber - Number of field in the key

newValue - New value for this field

updateEmbeddedValue

public void updateEmbeddedValue(java.lang.Object value,
                                int fieldNumber,
                                java.lang.Object newValue)

Method to update an embedded value in this map.

Specified by:

updateEmbeddedValue in interface SCOMap

Parameters:

value - The value

fieldNumber - Number of field in the value

newValue - New value for this field

getFieldName

public java.lang.String getFieldName()

Accessor for the field name that this Hashtable relates to.

Specified by:

getFieldName in interface SCO

Returns:

The field name

getOwner

public java.lang.Object getOwner()

Accessor for the owner that this Hashtable relates to.

Specified by:

getOwner in interface SCO

Returns:

The owner

unsetOwner

public void unsetOwner()

Method to unset the owner and field details.

Specified by:

unsetOwner in interface SCO

makeDirty

public void makeDirty()

Utility to mark the object as dirty

detachCopy

public java.lang.Object detachCopy(FetchPlanState state)

Method to return a detached copy of the container. Recurse sthrough the keys/values so that they are likewise detached.

Specified by:

detachCopy in interface SCO

Parameters:

state - State for detachment process

Returns:

The detached container

attachCopy

public void attachCopy(java.lang.Object value)

Method to return an attached copy of the passed (detached) value. The returned attached copy is a SCO wrapper. Goes through the existing keys/values in the store for this owner field and removes ones no longer present, and adds new keys/values. All keys/values in the (detached) value are attached.

Specified by:

attachCopy in interface SCO

Parameters:

value - The new (map) value

clone

public java.lang.Object clone()

Creates and returns a copy of this object.

Mutable second-class Objects are required to provide a public clone method in order to allow for copying PersistenceCapable objects. In contrast to Object.clone(), this method must not throw a CloneNotSupportedException.

Specified by:

clone in interface SCO

Overrides:

clone in class java.util.Hashtable<java.lang.Object,java.lang.Object>

Returns:

The cloned object

containsKey

public boolean containsKey(java.lang.Object key)

Method to return if the map contains this key

Specified by:

containsKey in interface java.util.Map<java.lang.Object,java.lang.Object>

Overrides:

containsKey in class java.util.Hashtable<java.lang.Object,java.lang.Object>

Parameters:

key - The key

Returns:

Whether it is contained

containsValue

public boolean containsValue(java.lang.Object value)

Method to return if the map contains this value.

Specified by:

containsValue in interface java.util.Map<java.lang.Object,java.lang.Object>

Overrides:

containsValue in class java.util.Hashtable<java.lang.Object,java.lang.Object>

Parameters:

value - The value

Returns:

Whether it is contained

entrySet

public java.util.Set entrySet()

Accessor for the set of entries in the Map.

Specified by:

entrySet in interface java.util.Map<java.lang.Object,java.lang.Object>

Overrides:

entrySet in class java.util.Hashtable<java.lang.Object,java.lang.Object>

Returns:

Set of entries

equals

public boolean equals(java.lang.Object o)

Method to check the equality of this map, and another.

Specified by:

equals in interface java.util.Map<java.lang.Object,java.lang.Object>

Overrides:

equals in class java.util.Hashtable<java.lang.Object,java.lang.Object>

Parameters:

o - The map to compare against.

Returns:

Whether they are equal.

get

public java.lang.Object get(java.lang.Object key)

Accessor for the value stored against a key.

Specified by:

get in interface java.util.Map<java.lang.Object,java.lang.Object>

Overrides:

get in class java.util.Hashtable<java.lang.Object,java.lang.Object>

Parameters:

key - The key

Returns:

The value.

hashCode

public int hashCode()

Method to generate a hashcode for this Map.

Specified by:

hashCode in interface java.util.Map<java.lang.Object,java.lang.Object>

Overrides:

hashCode in class java.util.Hashtable<java.lang.Object,java.lang.Object>

Returns:

The hashcode.

isEmpty

public boolean isEmpty()

Method to return if the Map is empty.

Specified by:

isEmpty in interface java.util.Map<java.lang.Object,java.lang.Object>

Overrides:

isEmpty in class java.util.Hashtable<java.lang.Object,java.lang.Object>

Returns:

Whether it is empty.

keySet

public java.util.Set keySet()

Accessor for the set of keys in the Map.

Specified by:

keySet in interface java.util.Map<java.lang.Object,java.lang.Object>

Overrides:

keySet in class java.util.Hashtable<java.lang.Object,java.lang.Object>

Returns:

Set of keys.

size

public int size()

Method to return the size of the Map.

Specified by:

size in interface java.util.Map<java.lang.Object,java.lang.Object>

Overrides:

size in class java.util.Hashtable<java.lang.Object,java.lang.Object>

Returns:

The size

values

public java.util.Collection values()

Accessor for the set of values in the Map.

Specified by:

values in interface java.util.Map<java.lang.Object,java.lang.Object>

Overrides:

values in class java.util.Hashtable<java.lang.Object,java.lang.Object>

Returns:

Set of values.

clear

public void clear()

Method to clear the Hashtable

Specified by:

clear in interface java.util.Map<java.lang.Object,java.lang.Object>

Overrides:

clear in class java.util.Hashtable<java.lang.Object,java.lang.Object>

put

public java.lang.Object put(java.lang.Object key,
                            java.lang.Object value)

Method to add a value against a key to the Hashtable

Specified by:

put in interface java.util.Map<java.lang.Object,java.lang.Object>

Overrides:

put in class java.util.Hashtable<java.lang.Object,java.lang.Object>

Parameters:

key - The key

value - The value

Returns:

The previous value for the specified key.

putAll

public void putAll(java.util.Map m)

Method to add the specified Map's values under their keys here.

Specified by:

putAll in interface java.util.Map<java.lang.Object,java.lang.Object>

Overrides:

putAll in class java.util.Hashtable<java.lang.Object,java.lang.Object>

Parameters:

m - The map

remove

public java.lang.Object remove(java.lang.Object key)

Method to remove the value for a key from the Hashtable

Specified by:

remove in interface java.util.Map<java.lang.Object,java.lang.Object>

Overrides:

remove in class java.util.Hashtable<java.lang.Object,java.lang.Object>

Parameters:

key - The key to remove

Returns:

The value that was removed from this key.

writeReplace

protected java.lang.Object writeReplace()
                                 throws java.io.ObjectStreamException

The writeReplace method is called when ObjectOutputStream is preparing to write the object to the stream. The ObjectOutputStream checks whether the class defines the writeReplace method. If the method is defined, the writeReplace method is called to allow the object to designate its replacement in the stream. The object returned should be either of the same type as the object passed in or an object that when read and resolved will result in an object of a type that is compatible with all references to the object.

Returns:

the replaced object

Throws:

java.io.ObjectStreamException