QueryIterProcessBinding (Apache Jena ARQ)

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:

java.util.Iterator<Binding>, org.apache.jena.atlas.io.Printable, 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.

Field Summary
- Fields inherited from class org.apache.jena.sparql.engine.iterator.QueryIteratorBase
  traceIterators

Constructor Summary

Constructors
Constructor Description

QueryIterProcessBinding(QueryIterator qIter, ExecutionContext context)

Method Summary

All Methods Instance Methods Abstract Methods Concrete Methods
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, getExecContext, getIteratorNumber, makeTracked, map, materialize, materialize, output

Methods inherited from class org.apache.jena.sparql.engine.iterator.QueryIteratorBase
cancel, debug, 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 Detail
  - QueryIterProcessBinding
```
public QueryIterProcessBinding(QueryIterator qIter,
                               ExecutionContext context)
```
- Method Detail
  - 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.