org.openrdf.query.algebra.evaluation.impl
Class ExternalSet

java.lang.Object
  org.openrdf.query.algebra.QueryModelNodeBase
      org.openrdf.query.algebra.evaluation.impl.ExternalSet

All Implemented Interfaces:

Cloneable, QueryModelNode, TupleExpr

public abstract class ExternalSet
extends QueryModelNodeBase
implements TupleExpr

Author:

James Leigh

Constructor Summary

ExternalSet()

Method Summary

double	cardinality()
ExternalSet	clone() Returns a (deep) clone of this query model node.
abstract CloseableIteration<BindingSet,QueryEvaluationException>	evaluate(BindingSet bindings)
Set<String>	getAssuredBindingNames() Gets the names of the bindings that are guaranteed to be present in the results produced by this tuple expression.
Set<String>	getBindingNames() Gets the names of the bindings that are, or can be, returned by this tuple expression when it is evaluated.
<X extends Exception> void	visit(QueryModelVisitor<X> visitor) Visits this node.

Methods inherited from class org.openrdf.query.algebra.QueryModelNodeBase

getParentNode, getSignature, nullEquals, replaceChildNode, replaceNodeInList, replaceWith, setParentNode, toString, visitChildren

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.openrdf.query.algebra.QueryModelNode

equals, getParentNode, getSignature, replaceChildNode, replaceWith, setParentNode, toString, visitChildren

Constructor Detail

ExternalSet

public ExternalSet()

Method Detail

getBindingNames

public Set<String> getBindingNames()

Description copied from interface: TupleExpr

Gets the names of the bindings that are, or can be, returned by this tuple expression when it is evaluated.

Specified by:

getBindingNames in interface TupleExpr

Returns:

A set of binding names.

getAssuredBindingNames

public Set<String> getAssuredBindingNames()

Description copied from interface: TupleExpr

Gets the names of the bindings that are guaranteed to be present in the results produced by this tuple expression.

Specified by:

getAssuredBindingNames in interface TupleExpr

Returns:

A set of binding names.

visit

public <X extends Exception> void visit(QueryModelVisitor<X> visitor)
           throws X extends Exception

Description copied from interface: QueryModelNode

Visits this node. The node reports itself to the visitor with the proper runtime type.

Specified by:

visit in interface QueryModelNode

Throws:

X extends Exception

clone

public ExternalSet clone()

Description copied from interface: QueryModelNode

Returns a (deep) clone of this query model node. This method recursively clones the entire node tree, starting from this nodes.

Specified by:

clone in interface QueryModelNode

Specified by:

clone in interface TupleExpr

Overrides:

clone in class QueryModelNodeBase

Returns:

A deep clone of this query model node.

cardinality

public double cardinality()

evaluate

public abstract CloseableIteration<BindingSet,QueryEvaluationException> evaluate(BindingSet bindings)
                                                                          throws QueryEvaluationException

Throws:

QueryEvaluationException