com.bigdata.rdf.graph

Class BinderBase<VS,ES,ST>

java.lang.Object

com.bigdata.rdf.graph.BinderBase<VS,ES,ST>

All Implemented Interfaces:

IBinder<VS,ES,ST>

public abstract class BinderBase<VS,ES,ST>
extends Object
implements IBinder<VS,ES,ST>

A base class for IBinders.

Constructor Summary

Constructors

Constructor and Description
BinderBase()

Method Summary

Methods

Modifier and Type	Method and Description
abstract org.openrdf.model.Value	bind(org.openrdf.model.ValueFactory vf, IGASState<VS,ES,ST> state, org.openrdf.model.Value v) Subclasses can implement this method if they follow the old single bind paradigm.
List<org.openrdf.model.Value>	bind(org.openrdf.model.ValueFactory vf, IGASState<VS,ES,ST> state, org.openrdf.model.Value u, IVariable<?>[] outVars, IBindingSet bs) Call bind(ValueFactory, IGASState, Value).
abstract int	getIndex() The ordinal index of the variable that is bound by this BinderBase.

Methods inherited from class java.lang.Object

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

Constructor Detail

BinderBase

public BinderBase()

Method Detail

getIndex

public abstract int getIndex()

The ordinal index of the variable that is bound by this BinderBase. By convention, index ZERO is the vertex. Indices greater than ZERO are typically aspects of the state of the vertex.

Specified by:

getIndex in interface IBinder<VS,ES,ST>

bind

public abstract org.openrdf.model.Value bind(org.openrdf.model.ValueFactory vf,
                           IGASState<VS,ES,ST> state,
                           org.openrdf.model.Value v)

Subclasses can implement this method if they follow the old single bind paradigm.

bind

public List<org.openrdf.model.Value> bind(org.openrdf.model.ValueFactory vf,
                                 IGASState<VS,ES,ST> state,
                                 org.openrdf.model.Value u,
                                 IVariable<?>[] outVars,
                                 IBindingSet bs)

Call bind(ValueFactory, IGASState, Value).

Specified by:

bind in interface IBinder<VS,ES,ST>

Parameters:

vf - The ValueFactory used to create the return Value.

state - The IGASState.

u - The vertex.

outVars - The array of output variables.

bs - The current binding set. Can be used to conditionally bind values based on the current solution.

Returns:

The Value for that ordinal variable or null if there is no binding for that ordinal variable.