com.bigdata.rdf.sparql.ast.cache

Class DescribeBindingsCollector

java.lang.Object

com.bigdata.rdf.sparql.ast.cache.DescribeBindingsCollector

All Implemented Interfaces:

info.aduna.iteration.CloseableIteration<org.openrdf.query.BindingSet,org.openrdf.query.QueryEvaluationException>, info.aduna.iteration.Iteration<org.openrdf.query.BindingSet,org.openrdf.query.QueryEvaluationException>

public class DescribeBindingsCollector
extends Object
implements info.aduna.iteration.CloseableIteration<org.openrdf.query.BindingSet,org.openrdf.query.QueryEvaluationException>

Collects and reports the distinct bindings observed on some set of variables.

Author:

Bryan Thompson

Constructor Summary

Constructors

Constructor and Description
DescribeBindingsCollector(Set<IVariable<?>> originalVars, Set<BigdataValue> describedResources, info.aduna.iteration.CloseableIteration<org.openrdf.query.BindingSet,org.openrdf.query.QueryEvaluationException> src)

Method Summary

Methods

Modifier and Type	Method and Description
void	close()
boolean	hasNext()
org.openrdf.query.BindingSet	next()
void	remove()

Methods inherited from class java.lang.Object

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

Constructor Detail

DescribeBindingsCollector

public DescribeBindingsCollector(Set<IVariable<?>> originalVars,
                         Set<BigdataValue> describedResources,
                         info.aduna.iteration.CloseableIteration<org.openrdf.query.BindingSet,org.openrdf.query.QueryEvaluationException> src)

Parameters:

originalVars - The set of variables whose distinct bound values will be reported.

describedResources - The set of distinct bound values for those variables (a high concurrency, thread-safe set).

src - The source iterator.

Method Detail

close

public void close()
           throws org.openrdf.query.QueryEvaluationException

Specified by:

close in interface info.aduna.iteration.CloseableIteration<org.openrdf.query.BindingSet,org.openrdf.query.QueryEvaluationException>

Throws:

org.openrdf.query.QueryEvaluationException

hasNext

public boolean hasNext()
                throws org.openrdf.query.QueryEvaluationException

Specified by:

hasNext in interface info.aduna.iteration.Iteration<org.openrdf.query.BindingSet,org.openrdf.query.QueryEvaluationException>

Throws:

org.openrdf.query.QueryEvaluationException

next

public org.openrdf.query.BindingSet next()
                                  throws org.openrdf.query.QueryEvaluationException

Specified by:

next in interface info.aduna.iteration.Iteration<org.openrdf.query.BindingSet,org.openrdf.query.QueryEvaluationException>

Throws:

org.openrdf.query.QueryEvaluationException

remove

public void remove()
            throws org.openrdf.query.QueryEvaluationException

Specified by:

remove in interface info.aduna.iteration.Iteration<org.openrdf.query.BindingSet,org.openrdf.query.QueryEvaluationException>

Throws:

org.openrdf.query.QueryEvaluationException