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

Class QueryIterProjectMerge

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.QueryIterRepeatApply

org.apache.jena.sparql.engine.iterator.QueryIterProjectMerge

All Implemented Interfaces:

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

public class QueryIterProjectMerge
extends QueryIterRepeatApply

Execute a projection in the middle of an execution. This requires the outcome of each stage of execution (substitution evaluation assumed) to be merged with the input binding. Bindings should already be compatible, otherwise this code should not be used.

Field Summary

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

traceIterators

Constructor Summary

Constructors

Constructor	Description
QueryIterProjectMerge(OpProject opProject, QueryIterator input, OpExecutor engine, ExecutionContext execCxt)

Method Summary

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

QueryIterProjectMerge

public QueryIterProjectMerge(OpProject opProject,
                             QueryIterator input,
                             OpExecutor engine,
                             ExecutionContext execCxt)