Module org.apache.jena.arq

Package org.apache.jena.sparql.engine.iterator

Class QueryIterProcessBinding

java.lang.Object

org.apache.jena.sparql.util.PrintSerializableBase

org.apache.jena.sparql.engine.iterator.QueryIteratorBase

org.apache.jena.sparql.engine.iterator.QueryIter

org.apache.jena.sparql.engine.iterator.QueryIter1

org.apache.jena.sparql.engine.iterator.QueryIterProcessBinding

All Implemented Interfaces:

Iterator<Binding>, org.apache.jena.atlas.io.Printable, org.apache.jena.atlas.iterator.IteratorCloseable<Binding>, org.apache.jena.atlas.lib.Closeable, QueryIterator, PrintSerializable

Direct Known Subclasses:

QueryIterAddTripleTerm, QueryIterAssign, QueryIterAssignVarValue, QueryIterFilterExpr

public abstract class QueryIterProcessBinding
extends QueryIter1

An iterator that applies a condition. The condition may return a different binding.

Constructor Summary

Constructors

Constructor	Description
QueryIterProcessBinding(QueryIterator qIter, ExecutionContext context)

Method Summary

Modifier and Type	Method	Description
abstract Binding	accept(Binding binding)	Process the binding - return null for "not accept".
Binding	moveToNextBinding()	The next acceptable object in the iterator.

Methods inherited from class org.apache.jena.sparql.engine.iterator.QueryIter1

output

Methods inherited from class org.apache.jena.sparql.engine.iterator.QueryIter

close, flatMap, getExecContext, getIteratorNumber, makeTracked, map, materialize, materialize, output

Methods inherited from class org.apache.jena.sparql.engine.iterator.QueryIteratorBase

cancel, hasNext, next, nextBinding, remove

Methods inherited from class org.apache.jena.sparql.util.PrintSerializableBase

toString, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Iterator

forEachRemaining

Methods inherited from interface org.apache.jena.sparql.util.PrintSerializable

toString

Methods inherited from interface org.apache.jena.sparql.engine.QueryIterator

isJoinIdentity

Constructor Details

QueryIterProcessBinding

public QueryIterProcessBinding(QueryIterator qIter,
 ExecutionContext context)

Method Details

accept

public abstract Binding accept(Binding binding)

Process the binding - return null for "not accept". Subclasses may return a different Binding to the argument and the result is the returned Binding.

moveToNextBinding

public Binding moveToNextBinding()

The next acceptable object in the iterator.

Returns:

The next acceptable object.