org.deri.cqels.engine

Class BDBGraphPatternRouter

java.lang.Object

org.deri.cqels.engine.OpRouterBase

org.deri.cqels.engine.BDBGraphPatternRouter

All Implemented Interfaces:

OpRouter

public class BDBGraphPatternRouter
extends OpRouterBase

This class implements a router that its data mapping buffer is static

Author:

Danh Le Phuoc, Chan Le Van

See Also:

OpRouterBase

Constructor Summary

Constructors

Constructor and Description
BDBGraphPatternRouter(ExecContext context, com.hp.hpl.jena.sparql.algebra.Op op) The constructor
BDBGraphPatternRouter(ExecContext context, com.hp.hpl.jena.sparql.algebra.Op op, com.hp.hpl.jena.sparql.core.DatasetGraph ds) The constructor

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
MappingIterator	iterator()
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)

Methods inherited from class org.deri.cqels.engine.OpRouterBase

_route, getId, getOp, route

Methods inherited from class java.lang.Object

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

Constructor Detail

BDBGraphPatternRouter

public BDBGraphPatternRouter(ExecContext context,
                     com.hp.hpl.jena.sparql.algebra.Op op)

The constructor

Parameters:

context -

op -

BDBGraphPatternRouter

public BDBGraphPatternRouter(ExecContext context,
                     com.hp.hpl.jena.sparql.algebra.Op op,
                     com.hp.hpl.jena.sparql.core.DatasetGraph ds)

The constructor

Parameters:

context -

op -

ds -

Method Detail

getBuff

public MappingIterator getBuff()

Description copied from interface: OpRouter

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

Specified by:

getBuff in interface OpRouter

Overrides:

getBuff in class OpRouterBase

Returns:

the data buffer of dataset

searchBuff4Match

public MappingIterator searchBuff4Match(Mapping mapping)

Description copied from interface: OpRouter

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

Specified by:

searchBuff4Match in interface OpRouter

Overrides:

searchBuff4Match in class OpRouterBase

Parameters:

mapping - the specified mapping

Returns:

a mapping iterator of matched mappings in buffer

iterator

public MappingIterator iterator()

Returns:

return iterator

visit

public void visit(RouterVisitor rv)