org.aksw.limes.core.execution.engine

Class ExecutionEngine

java.lang.Object

org.aksw.limes.core.execution.engine.ExecutionEngine

All Implemented Interfaces:

IExecutionEngine

Direct Known Subclasses:

ParallelExecutionEngine, SimpleExecutionEngine

public abstract class ExecutionEngine
extends Object
implements IExecutionEngine

Implements the execution engine abstract class. The engine gets as input a link specification and a planner type, executes the plan returned from the planner and returns the set of links as a mapping.

Version:

1.0

Author:

Axel-C. Ngonga Ngomo (ngonga@informatik.uni-leipzig.de), Kleanthi Georgala (georgala@informatik.uni-leipzig.de)

Field Summary

Fields

Modifier and Type	Field and Description
protected List<AMapping>	buffer List of intermediate mappings.
protected double	expectedSelectivity
protected long	optimizationTime
protected ACache	source Source cache.
protected String	sourceVariable Source variable (usually "?x").
protected ACache	target Target cache.
protected String	targetVariable Target variable (usually "?y").

Constructor Summary

Constructors

Constructor and Description
ExecutionEngine(ACache source, ACache target, String sourceVar, String targetVar) Constructor for an execution engine.
ExecutionEngine(ACache source, ACache target, String sourceVar, String targetVar, long maxOpt, double k) Constructor for an execution engine.

Method Summary

Modifier and Type	Method and Description
List<AMapping>	getBuffer()
void	setBuffer(List<AMapping> buffer)

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.aksw.limes.core.execution.engine.IExecutionEngine

execute

Field Detail

buffer

protected List<AMapping> buffer

List of intermediate mappings.

sourceVariable

protected String sourceVariable

Source variable (usually "?x").

targetVariable

protected String targetVariable

Target variable (usually "?y").

source

protected ACache source

Source cache.

target

protected ACache target

Target cache.

optimizationTime

protected long optimizationTime

expectedSelectivity

protected double expectedSelectivity

Constructor Detail

ExecutionEngine

public ExecutionEngine(ACache source,
                       ACache target,
                       String sourceVar,
                       String targetVar)

Constructor for an execution engine.

Parameters:

source - Source cache

target - Target cache

sourceVar - Source variable

targetVar - Target variable

ExecutionEngine

public ExecutionEngine(ACache source,
                       ACache target,
                       String sourceVar,
                       String targetVar,
                       long maxOpt,
                       double k)

Constructor for an execution engine.

Parameters:

source - Source cache

target - Target cache

sourceVar - Source variable

targetVar - Target variable

maxOpt, - optimization time constraint

k, - expected selectivity

Method Detail

getBuffer

public List<AMapping> getBuffer()

setBuffer

public void setBuffer(List<AMapping> buffer)