org.deri.cqels.engine

Interface OpRouter

All Known Implementing Classes:

BDBGraphPatternRouter, ContinuousConstruct, ContinuousSelect, ExtendRouter, FilterExprRouter, GroupRouter, IndexedTripleRouter, JoinRouter, OpRouter1, OpRouter2, OpRouterBase, ProjectRouter, ThroughRouter

public interface OpRouter

This interface contains the behaviours of a router which is responsible to receive a mapping and route it to the higher node in the router-node tree

Author:

Danh Le Phuoc, Chan Le Van

Method Summary

Methods

Modifier and Type	Method and Description
MappingIterator	getBuff() Each specific router contains a data buffer in the form of mappings This method will get that data buffer out
int	getId() Each specific router has a unique Id This method will get that Id out
com.hp.hpl.jena.sparql.algebra.Op	getOp() Each specific router contains an operator what is parsed from the query This method will get that op out
void	route(Mapping mapping) This method route the specified mapping to higher node in the router-node tree
MappingIterator	searchBuff4Match(Mapping mapping) This method tries to search in the data mapping buffer whether there is any mapping that matches the specified mapping.
void	visit(RouterVisitor rv)

Method Detail

getOp

com.hp.hpl.jena.sparql.algebra.Op getOp()

Each specific router contains an operator what is parsed from the query This method will get that op out

getBuff

MappingIterator getBuff()

Each specific router contains a data buffer in the form of mappings This method will get that data buffer out

searchBuff4Match

MappingIterator searchBuff4Match(Mapping mapping)

This method tries to search in the data mapping buffer whether there is any mapping that matches the specified mapping.

Parameters:

mapping - the specified mapping

Returns:

a mapping iterator of matched mappings in buffer

route

void route(Mapping mapping)

This method route the specified mapping to higher node in the router-node tree

Parameters:

mapping - the specified mapping

getId

int getId()

Each specific router has a unique Id This method will get that Id out

visit

void visit(RouterVisitor rv)