Package org.oristool.lello

Class Bindings

java.lang.Object

org.oristool.lello.Bindings

public class Bindings
extends Object

A collection of pairs name/value, also called bindings. This can be seen as a set of variables each bound to a given value.

Field Summary

Fields

Modifier and Type	Field	Description
static Bindings	NOBINDINGS	A predefined empty set of bindings; use this instead of null when you do not want to bind any name.

Constructor Summary

Constructors

Constructor	Description
Bindings()	Initializes an empty set of bindings.

Method Summary

Modifier and Type	Method	Description
Value	get(String name)	Retrieves a value.
boolean	isBound(String name)	Tells if a given variable is bound to a value or not.
Map<String,Value>	mapValues()	Retrieves all the name/value mappings.
void	set(String name, Value value)	Assigns a value to a variable.
void	unset(String name)	Destroys a variable.

Methods inherited from class java.lang.Object

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

Field Detail

NOBINDINGS

public static final Bindings NOBINDINGS

A predefined empty set of bindings; use this instead of null when you do not want to bind any name. This collection is read-only.

Constructor Detail

Bindings

public Bindings()

Initializes an empty set of bindings.

Method Detail

set

public void set(String name,
                Value value)

Assigns a value to a variable.

Parameters:

name - The name of the variable to set.

value - The new value.

get

public Value get(String name)

Retrieves a value.

Parameters:

name - The name of the variable whose value must be retrieved.

Returns:

The associated value.

unset

public void unset(String name)

Destroys a variable.

Parameters:

name - The name of the variable to be destroyed.

isBound

public boolean isBound(String name)

Tells if a given variable is bound to a value or not.

Parameters:

name - The name of the variable to be tested.

Returns:

true if bound, false otherwise.

mapValues

public Map<String,Value> mapValues()

Retrieves all the name/value mappings.

Returns:

A map describing all the bindings.