storage.memory
Class memMapContent

java.lang.Object
  storage.memory.memContent
      storage.memory.memMapContent

All Implemented Interfaces:

storage.memory.MemContentI

public final class memMapContent

extends memContent

The canonical implementation of a MapContent object in memory. This implementation also contains subclasses for implementing Map and MapEditor given a Node that is using this class as its memContent.

Field Summary

protected java.util.HashMap	content
protected CacheMap	getters
protected MapType	mapType

Fields inherited from class storage.memory.memContent

allContents, nodeContents

Method Summary

java.util.Map	asMap()
protected NodeContent	createNodeContent(Node n, Capability cap, storage.framework.RepoServices s) Create a NodeContent object with the memContent, and the given Node, Capability, and RepoServices.
boolean	isValidProperty(java.lang.Object property) Check for the validity of a given property value.
java.util.Iterator	properties() A sequence of all of the properties currently indexing the contents if this Content.
int	size() The number of properties contained in this Content object.
NodeType	type() The type of this Content object.
Getter	value(java.lang.Object key, NodeContent node) A generic Getter for property values, given a property.
protected GetterUtil	valueGetter(java.lang.Object key, NodeContent c) Create or find a GetterUtil for this key.

Methods inherited from class storage.memory.memContent

assignNode, create, findNodeContent, getValue, ingest, initEdit, invert, invert, modify, nodeContent, rememberNodeContent, seatNode

Methods inherited from class java.lang.Object

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

Field Detail

mapType

protected final MapType mapType

content

protected java.util.HashMap content

getters

protected CacheMap getters

Method Detail

createNodeContent

protected NodeContent createNodeContent(Node n,
                                        Capability cap,
                                        storage.framework.RepoServices s)

Description copied from class: memContent

Create a NodeContent object with the memContent, and the given Node, Capability, and RepoServices.

Specified by:

createNodeContent in class memContent

Parameters:

n - a Node associated with this memContent

cap - a Capability restricting access to operations

s - the RepoServices needed to manage Txns and create Nodes

Returns:

a new NodeContent object

asMap

public java.util.Map asMap()

type

public NodeType type()

Description copied from interface: storage.memory.MemContentI

The type of this Content object.

Necessarily a NodeType type, and always a specific instance of MapType, RecordType or SequenceType.

size

public int size()

Description copied from interface: storage.memory.MemContentI

The number of properties contained in this Content object.

properties

public java.util.Iterator properties()

Description copied from interface: storage.memory.MemContentI

A sequence of all of the properties currently indexing the contents if this Content.

valueGetter

protected GetterUtil valueGetter(java.lang.Object key,
                                 NodeContent c)
                          throws PropertyTypeMismatch

Create or find a GetterUtil for this key.

Throws:

PropertyTypeMismatch

value

public Getter value(java.lang.Object key,
                    NodeContent node)
             throws PropertyTypeMismatch

Description copied from interface: storage.memory.MemContentI

A generic Getter for property values, given a property.

Will throw an exception if the property type is invalid, but not if the property is not available in this Node's content. This way, a value Getter can be established in anticipation of the addition of a property.

Parameters:

key - the Object that identifies this property

Throws:

PropertyTypeMismatch

isValidProperty

public boolean isValidProperty(java.lang.Object property)

Description copied from interface: storage.memory.MemContentI

Check for the validity of a given property value.

Parameters:

property - the property to be checked

Returns:

true if that value can be used as a property of this Node