de.fuberlin.wiwiss.wiqa.extensions
Class AbstractRankBasedMetric

java.lang.Object
  de.fuberlin.wiwiss.wiqa.extensions.AbstractRankBasedMetric

All Implemented Interfaces:

Extension

Direct Known Subclasses:

AppleseedMetric, SemanticPageRank

public abstract class AbstractRankBasedMetric

extends Object

implements Extension

Author:

Oliver Maresch (oliver-maresch@gmx.de)

Field Summary

protected DatasetGraph	dataSource
protected String	uri URI, which identifies the Metric in the TriQL Trust-Architecture.

Constructor Summary

AbstractRankBasedMetric(String uri)

Method Summary

void	build(List args, String uri)
protected void	cache(RankingCache obj, Node sink) Stores a metric-specific RankingCache into the cache.
protected Node	cl(String str) Creates a String Literal Node
QueryIterator	exec(QueryIterator input, List args, String uri, ExecutionContext execCxt)
abstract Integer	execMetric(List inputTable)
ExplanationPart	explain()
Graph	explainRDF()
RankingCache	getCachedRanking(RankingCache notCached) Checks for a ranking, whether or not a ranking with the same parameters was allready calculated.
DatasetGraph	getDataSource()
int	getRank()
protected RankingCache	getRankingCache(int i) Looks up the RankingCache of the binding i.
protected Node	getSink(int i) Looks up the sink of the binding i.
String	getURI()
boolean	hasCachedRanking(RankingCache obj)
boolean	isAccepted()
void	setComparator(Node cmp)
void	setRank(int rank)

Methods inherited from class java.lang.Object

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

Field Detail

uri

protected String uri

URI, which identifies the Metric in the TriQL Trust-Architecture.

dataSource

protected DatasetGraph dataSource

Constructor Detail

AbstractRankBasedMetric

public AbstractRankBasedMetric(String uri)

Method Detail

getDataSource

public DatasetGraph getDataSource()

setComparator

public void setComparator(Node cmp)

setRank

public void setRank(int rank)

getRank

public int getRank()

getSink

protected Node getSink(int i)

Looks up the sink of the binding i.

getRankingCache

protected RankingCache getRankingCache(int i)

Looks up the RankingCache of the binding i.

cache

protected void cache(RankingCache obj,
                     Node sink)

Stores a metric-specific RankingCache into the cache. The RankingCache is accessible with the specified key, which should be the number of the resultbindg, which produces the data of the RankingCache.

getURI

public String getURI()

hasCachedRanking

public boolean hasCachedRanking(RankingCache obj)

getCachedRanking

public RankingCache getCachedRanking(RankingCache notCached)

Checks for a ranking, whether or not a ranking with the same parameters was allready calculated. If so, the cached rating will be returned, null otherwise.

cl

protected Node cl(String str)

Creates a String Literal Node

Parameters:

str -

Returns:

StringLiteral as a Node

explain

public ExplanationPart explain()

explainRDF

public Graph explainRDF()

isAccepted

public boolean isAccepted()

build

public void build(List args,
                  String uri)

Specified by:

build in interface Extension

exec

public QueryIterator exec(QueryIterator input,
                          List args,
                          String uri,
                          ExecutionContext execCxt)

Specified by:

exec in interface Extension

execMetric

public abstract Integer execMetric(List inputTable)