Package org.aksw.jenax.arq.service.vfs

Class QueryIteratorMaterialize

java.lang.Object
org.apache.jena.sparql.util.PrintSerializableBase
org.apache.jena.sparql.engine.iterator.QueryIteratorBase
org.apache.jena.sparql.engine.iterator.QueryIteratorWrapper
org.aksw.jenax.arq.service.vfs.QueryIteratorMaterialize
All Implemented Interfaces:
Iterator<org.apache.jena.sparql.engine.binding.Binding>, org.apache.jena.atlas.io.Printable, org.apache.jena.atlas.iterator.IteratorCloseable<org.apache.jena.sparql.engine.binding.Binding>, org.apache.jena.atlas.lib.Closeable, org.apache.jena.sparql.engine.QueryIterator, org.apache.jena.sparql.util.PrintSerializable
public class QueryIteratorMaterialize extends org.apache.jena.sparql.engine.iterator.QueryIteratorWrapper
A QueryIterator that upon access to the first item consumes the underlying iterator into a data bag.

  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    protected org.apache.jena.sparql.engine.ExecutionContext
    execCxt
     
    protected org.apache.jena.sparql.engine.QueryIterator
    outputIt
     
    protected org.apache.jena.atlas.data.ThresholdPolicy<org.apache.jena.sparql.engine.binding.Binding>
    thresholdPolicy
    If the threshold policy is not set then it will be lazily initialized from the execCxt

    Fields inherited from class org.apache.jena.sparql.engine.iterator.QueryIteratorWrapper

    iterator

  • Constructor Summary

    Constructors
    Constructor
    Description
    QueryIteratorMaterialize(org.apache.jena.sparql.engine.QueryIterator qIter, org.apache.jena.sparql.engine.ExecutionContext execCxt)
     
    QueryIteratorMaterialize(org.apache.jena.sparql.engine.QueryIterator qIter, org.apache.jena.sparql.engine.ExecutionContext execCxt, org.apache.jena.atlas.data.ThresholdPolicy<org.apache.jena.sparql.engine.binding.Binding> thresholdPolicy)
    Ctor with a fixed threshold policy.

  • Method Summary

    Modifier and Type
    Method
    Description
    protected void
    closeIterator()
     
    protected void
    collect()
     
    org.apache.jena.atlas.data.ThresholdPolicy<org.apache.jena.sparql.engine.binding.Binding>
    getThresholdPolicy()
    Get the threshold policy.
    protected boolean
    hasNextBinding()
     
    protected org.apache.jena.sparql.engine.binding.Binding
    moveToNextBinding()
     

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

    output, output, requestCancel

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

    cancel, close, hasNext, isFinished, next, nextBinding, performClose, performRequestCancel, remove

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

    toString, toString

    Methods inherited from class java.lang.Object

    clone, equals, finalize, 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

  • Field Details

    • outputIt

      protected org.apache.jena.sparql.engine.QueryIterator outputIt

    • execCxt

      protected org.apache.jena.sparql.engine.ExecutionContext execCxt

    • thresholdPolicy

      protected org.apache.jena.atlas.data.ThresholdPolicy<org.apache.jena.sparql.engine.binding.Binding> thresholdPolicy
      If the threshold policy is not set then it will be lazily initialized from the execCxt

  • Constructor Details

    • QueryIteratorMaterialize

      public QueryIteratorMaterialize(org.apache.jena.sparql.engine.QueryIterator qIter, org.apache.jena.sparql.engine.ExecutionContext execCxt)

    • QueryIteratorMaterialize

      public QueryIteratorMaterialize(org.apache.jena.sparql.engine.QueryIterator qIter, org.apache.jena.sparql.engine.ExecutionContext execCxt, org.apache.jena.atlas.data.ThresholdPolicy<org.apache.jena.sparql.engine.binding.Binding> thresholdPolicy)
      Ctor with a fixed threshold policy.

  • Method Details

    • getThresholdPolicy

      public org.apache.jena.atlas.data.ThresholdPolicy<org.apache.jena.sparql.engine.binding.Binding> getThresholdPolicy()
      Get the threshold policy. May return null if it was not initialized yet. Call QueryIteratorBase.hasNext() to force initialization.

    • hasNextBinding

      protected boolean hasNextBinding()
      Overrides:
      hasNextBinding in class org.apache.jena.sparql.engine.iterator.QueryIteratorWrapper

    • moveToNextBinding

      protected org.apache.jena.sparql.engine.binding.Binding moveToNextBinding()
      Overrides:
      moveToNextBinding in class org.apache.jena.sparql.engine.iterator.QueryIteratorWrapper

    • collect

      protected void collect()

    • closeIterator

      protected void closeIterator()
      Overrides:
      closeIterator in class org.apache.jena.sparql.engine.iterator.QueryIteratorWrapper