VarNameCollector

java.lang.Object

org.eclipse.rdf4j.query.algebra.helpers.AbstractSimpleQueryModelVisitor<RuntimeException>

org.eclipse.rdf4j.query.algebra.helpers.collectors.VarNameCollector

All Implemented Interfaces:: QueryModelVisitor<RuntimeException>

public class VarNameCollector extends AbstractSimpleQueryModelVisitor<RuntimeException>

A QueryModelVisitor that collects the names of (non-constant) variables that are used in a query model.

Field Summary

Fields

Modifier and Type

Field

Description

private final List<String>

varNames

private Set<String>

varNamesSet
Constructor Summary

Constructors

Constructor

Description

VarNameCollector()
Method Summary

Modifier and Type

Method

Description

Set<String>

getVarNames()

void

meet(Var var)

static Set<String>

process(QueryModelNode node)

Methods inherited from class AbstractSimpleQueryModelVisitor
meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meetBinaryTupleOperator, meetBinaryValueOperator, meetCompareSubQueryValueOperator, meetNAryValueOperator, meetOther, meetSubQueryValueOperator, meetUnaryTupleOperator, meetUnaryValueOperator, meetUnsupported, meetUpdateExpr

Methods inherited from class Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details
- varNames
  
  private final List<String> varNames
- varNamesSet
  
  private Set<String> varNamesSet
Constructor Details
- VarNameCollector
  
  public VarNameCollector()
Method Details
- process
  
  public static Set<String> process(QueryModelNode node)
- getVarNames
  
  public Set<String> getVarNames()
- meet
  
  public void meet(Var var)
  
  Specified by:
  
  meet in interface QueryModelVisitor<RuntimeException>
  
  Overrides:
  
  meet in class AbstractSimpleQueryModelVisitor<RuntimeException>