org.openrdf.sail.optimistic.helpers
Class LeftJoinDetector

java.lang.Object
  org.openrdf.query.algebra.helpers.QueryModelVisitorBase<RuntimeException>
      org.openrdf.sail.optimistic.helpers.LeftJoinDetector

All Implemented Interfaces:

QueryModelVisitor<RuntimeException>

public class LeftJoinDetector
extends QueryModelVisitorBase<RuntimeException>

Scans a tree for LeftJoin nodes.

Author:

James Leigh

Constructor Summary

LeftJoinDetector(QueryModelNode root)

Method Summary

boolean	isPresent()
void	meet(LeftJoin node)

Methods inherited from class org.openrdf.query.algebra.helpers.QueryModelVisitorBase

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, meetNode, meetOther, meetSubQueryValueOperator, meetUnaryTupleOperator, meetUnaryValueOperator

Methods inherited from class java.lang.Object

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

Constructor Detail

LeftJoinDetector

public LeftJoinDetector(QueryModelNode root)

Method Detail

isPresent

public boolean isPresent()

meet

public void meet(LeftJoin node)

Specified by:

meet in interface QueryModelVisitor<RuntimeException>

Overrides:

meet in class QueryModelVisitorBase<RuntimeException>