Package gw.internal.gosu.properties

Class PropertyNode

java.lang.Object

gw.internal.gosu.properties.PropertyNode

All Implemented Interfaces:

IGosuObject

public class PropertyNode
extends Object
implements IGosuObject

A node in a tree representation of an underlying PropertySet. Any compound names, such as a.b.c and a.b.d, in the keys of the property set are split into a tree representation. In the a.b.c/a.b.d example there would be a property node for a, with a child node b with two further leaf children c and d.

Field Summary

Fields

Modifier and Type	Field	Description
private final Map<String,PropertyNode>	_children
private final String	_name
private final PropertyNode	_parent
private final String	_path
private final PropertySet	_propertySet

Constructor Summary

Constructors

Modifier	Constructor	Description
private	PropertyNode(PropertyNode parent, String name, PropertySet propertySet)

Method Summary

Modifier and Type	Method	Description
private void	addChild(PropertyNode node)
static PropertyNode	buildTree(PropertySet propertySet)
private PropertyNode	getChild(String name)
List<PropertyNode>	getChildren()	The direct children of this property node
String	getChildValue(String name)	Return the value for the named child property; this is just like doing lookup on the underlying PropertySet except that the name is prefixed with the full name of this property.
String	getFullName()	The full property name, for example a.b
IType	getIntrinsicType()	Return the intrinsic type based on this property node
private String	getName()
PropertyNode	getParent()
String	getPath()
String	getRelativeName()	The last part of the property name, for example b if the full name is a.b
String	getTypeName()	Return the name that should be used for the type based on this property node
String	getValue()	Return the value for this property as given by the underlying PropertySet
boolean	hasValue()	Does this property node have a value in the underlying PropertySet
(package private) static boolean	isGosuIdentifier(String name)
private static boolean	isGosuIdentifierPart(char ch)
private static boolean	isGosuIdentifierStart(char ch)
boolean	isLeaf()	Is this a leaf node - that is, does it have no children?
boolean	isRoot()	Is this the root of a property node tree?
private boolean	isUseless()
private static String	join(String head, String tail)
private void	removeUseless()
String	toString()	If this node has a property value, returns the value of that property.

Methods inherited from class java.lang.Object

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

Methods inherited from interface gw.lang.reflect.gs.IGosuObject

equals, hashCode

Field Details

_parent

private final PropertyNode _parent

_name

private final String _name

_path

private final String _path

_propertySet

private final PropertySet _propertySet

_children

private final Map<String,PropertyNode> _children

Constructor Details

PropertyNode

private PropertyNode(PropertyNode parent,
 String name,
 PropertySet propertySet)

Method Details

buildTree

public static PropertyNode buildTree(PropertySet propertySet)

getFullName

public String getFullName()

The full property name, for example a.b

Returns:

a non null name, which must be one or more valid Gosu identifiers separated by periods

getRelativeName

public String getRelativeName()

The last part of the property name, for example b if the full name is a.b

Returns:

a non null name, which must be a valid Gosu identifier

getTypeName

public String getTypeName()

Return the name that should be used for the type based on this property node

Returns:

a non null type name

getIntrinsicType

public IType getIntrinsicType()

Return the intrinsic type based on this property node

Specified by:

getIntrinsicType in interface IGosuObject

Returns:

intrinsic type

hasValue

public boolean hasValue()

Does this property node have a value in the underlying PropertySet

Returns:

true if the node has an underlying value, false otherwise

getValue

public String getValue()

Return the value for this property as given by the underlying PropertySet

Returns:

the property value, or null if it doesn't have one

isLeaf

public boolean isLeaf()

Is this a leaf node - that is, does it have no children?

Returns:

true if this node has no children, false otherwise

isRoot

public boolean isRoot()

Is this the root of a property node tree?

Returns:

true if this is the root, false otherwise

getChildren

public List<PropertyNode> getChildren()

The direct children of this property node

Returns:

a non null, though possibly empty, list of children

getChildValue

public String getChildValue(String name)

Return the value for the named child property; this is just like doing lookup on the underlying PropertySet except that the name is prefixed with the full name of this property. For example if this property is a then getting the child value b.c will return the value of a.b.c in the original property set

Parameters:

name - non null name of child property

Returns:

the child property value, or null if there is no such child property

toString

public String toString()

If this node has a property value, returns the value of that property. Otherwise returns a string describing the property name.

Specified by:

toString in interface IGosuObject

Overrides:

toString in class Object

getChild

private PropertyNode getChild(String name)

addChild

private void addChild(PropertyNode node)

isUseless

private boolean isUseless()

removeUseless

private void removeUseless()

isGosuIdentifier

static boolean isGosuIdentifier(String name)

isGosuIdentifierStart

private static boolean isGosuIdentifierStart(char ch)

isGosuIdentifierPart

private static boolean isGosuIdentifierPart(char ch)

join

private static String join(String head,
 String tail)

getName

private String getName()

getPath

public String getPath()

getParent

public PropertyNode getParent()