org.globus.cog.gridshell.model
Class ScopeImpl

java.lang.Object
  org.globus.cog.gridshell.model.ScopeImpl

All Implemented Interfaces:

PropertyChangeNotifier, Scope, Serializable

public class ScopeImpl

extends Object

implements Scope

An implementation of Scope

See Also:

Serialized Form

Nested Class Summary

Nested classes inherited from class org.globus.cog.gridshell.interfaces.Scope

Scope.Mode

Field Summary

Fields inherited from interface org.globus.cog.gridshell.interfaces.Scope

READ_ONLY, READ_WRITE

Constructor Summary

ScopeImpl()
Default Constructor

ScopeImpl(Scope _super)
Allows a superclass to be specified

Method Summary

void	addPropertyChangeListener(PropertyChangeListener pcListener) Add a property change listener
void	addPropertyChangeListener(String name, PropertyChangeListener pcListener) Add a property change listener for propertyName
static Scope	createImmutableScope(Scope scope) Creates a scope whos variables can't be modified
Scope.Mode	getMode(String name) Returns the mode the variable is
Scope	getSuper() Returns a super class if one is defined, otherwise returns null
static Scope	getSystemScope() Returns a Scope of the system
Set	getUniqueValues() Returns values (no duplicates)
Object	getValue(String name) Gets the value associated with variable name for this or superclass
Collection	getValues() Returns all the values (duplicates included)
Set	getVariableNames() Returns a collection of the variable names for this scope and any superclass
void	removePropertyChangeListener(PropertyChangeListener pcListener) Remove a property change listener
void	setMode(String name, Scope.Mode value) Sets the mode of a variable
void	setVariableTo(String name, Object value) If a variable "name" is defined in "this" sets the variable to value, next checks for the variable "name" up the superclass chain.
boolean	variableExists(String name) Returns true of the variable exists either in "this" or up the super chain

Methods inherited from class java.lang.Object

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

Constructor Detail

ScopeImpl

public ScopeImpl(Scope _super)

Allows a superclass to be specified

Parameters:

_super - - the superclass

ScopeImpl

public ScopeImpl()

Default Constructor

Method Detail

getVariableNames

public Set getVariableNames()

Description copied from interface: Scope

Returns a collection of the variable names for this scope and any superclass

Specified by:

getVariableNames in interface Scope

Returns:

getValues

public Collection getValues()

Description copied from interface: Scope

Returns all the values (duplicates included)

Specified by:

getValues in interface Scope

Returns:

getUniqueValues

public Set getUniqueValues()

Description copied from interface: Scope

Returns values (no duplicates)

Specified by:

getUniqueValues in interface Scope

Returns:

getSuper

public Scope getSuper()

Description copied from interface: Scope

Returns a super class if one is defined, otherwise returns null

Specified by:

getSuper in interface Scope

Returns:

getValue

public Object getValue(String name)

Description copied from interface: Scope

Gets the value associated with variable name for this or superclass

Specified by:

getValue in interface Scope

Parameters:

name - - the name of the variable to look for

Returns:

setVariableTo

public void setVariableTo(String name,
                          Object value)
                   throws ScopeException

Description copied from interface: Scope

If a variable "name" is defined in "this" sets the variable to value, next checks for the variable "name" up the superclass chain. If no such variable is found all the way up, creates a new variable this.name and sets to value

Specified by:

setVariableTo in interface Scope

Parameters:

name - - the name of the variable

value - - the value to set the variable to

Throws:

ScopeException - - thrown if failed to set the variable

variableExists

public boolean variableExists(String name)

Description copied from interface: Scope

Returns true of the variable exists either in "this" or up the super chain

Specified by:

variableExists in interface Scope

Parameters:

name -

Returns:

addPropertyChangeListener

public void addPropertyChangeListener(PropertyChangeListener pcListener)

Description copied from interface: PropertyChangeNotifier

Add a property change listener

Specified by:

addPropertyChangeListener in interface PropertyChangeNotifier

Parameters:

pcListener -

addPropertyChangeListener

public void addPropertyChangeListener(String name,
                                      PropertyChangeListener pcListener)

Description copied from interface: PropertyChangeNotifier

Add a property change listener for propertyName

Specified by:

addPropertyChangeListener in interface PropertyChangeNotifier

Parameters:

name -

pcListener -

removePropertyChangeListener

public void removePropertyChangeListener(PropertyChangeListener pcListener)

Description copied from interface: PropertyChangeNotifier

Remove a property change listener

Specified by:

removePropertyChangeListener in interface PropertyChangeNotifier

Parameters:

pcListener -

getMode

public Scope.Mode getMode(String name)

Description copied from interface: Scope

Returns the mode the variable is

Specified by:

getMode in interface Scope

Parameters:

name -

Returns:

setMode

public void setMode(String name,
                    Scope.Mode value)

Description copied from interface: Scope

Sets the mode of a variable

Specified by:

setMode in interface Scope

Parameters:

name -

value -

createImmutableScope

public static Scope createImmutableScope(Scope scope)

Creates a scope whos variables can't be modified

Parameters:

scope -

Returns:

getSystemScope

public static Scope getSystemScope()

Returns a Scope of the system

Returns: