com.hp.hpl.jena.sparql.engine.binding

Class BindingBase

java.lang.Object

com.hp.hpl.jena.sparql.engine.binding.BindingBase

All Implemented Interfaces:

Binding

Direct Known Subclasses:

Binding0, Binding1, BindingHashMap, BindingProjectBase

public abstract class BindingBase
extends Object
implements Binding

Machinary encapsulating a mapping from a name to a value. The "parent" is a shared, immutable, common set of bindings. An association of var/node must not override a setting in the parent.

See Also:

BindingFactory, for mutable bindings.

Method Summary

Methods

Modifier and Type	Method and Description
boolean	contains(Var var) Test whether a name is bound to some object
static boolean	equals(Binding bind1, Binding bind2)
boolean	equals(Object other)
void	format1(StringBuffer sbuff)
Node	get(Var var) Return the object bound to a name, or null
Binding	getParent()
int	hashCode()
static int	hashCode(Binding bind)
boolean	isEmpty() Is this an empty binding? No variables.
int	size() Number of (var, value) pairs.
String	toString()
String	toString1()
Iterator<Var>	vars() Iterate over all the names of variables.

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Method Detail

getParent

public Binding getParent()

vars

public final Iterator<Var> vars()

Iterate over all the names of variables.

Specified by:

vars in interface Binding

size

public final int size()

Description copied from interface: Binding

Number of (var, value) pairs.

Specified by:

size in interface Binding

isEmpty

public boolean isEmpty()

Description copied from interface: Binding

Is this an empty binding? No variables.

Specified by:

isEmpty in interface Binding

contains

public boolean contains(Var var)

Test whether a name is bound to some object

Specified by:

contains in interface Binding

get

public final Node get(Var var)

Return the object bound to a name, or null

Specified by:

get in interface Binding

toString

public String toString()

Overrides:

toString in class Object

format1

public void format1(StringBuffer sbuff)

toString1

public String toString1()

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object other)

Overrides:

equals in class Object

hashCode

public static int hashCode(Binding bind)

equals

public static boolean equals(Binding bind1,
             Binding bind2)