de.fuberlin.wiwiss.ng4j.semwebclient
Class CommandLineQuery

java.lang.Object
  de.fuberlin.wiwiss.ng4j.semwebclient.CommandLineQuery

public class CommandLineQuery
extends Object

Constructor Summary

CommandLineQuery()

Method Summary

void	addSourceURI(String uri) Loads a file from the Web before the query is executed.
void	run() Executes the query specified using the other options.
void	setEnableGrddl(boolean enableGrddl) Enables the GRDDL transformations.
void	setFindTriple(Triple triple) Sets a triple pattern to be used as a query against the Semantic Web.
void	setLoadGraphSet(String file, String format) Loads a set of graphs from a file before the query is executed.
void	setMaxFilesize(int maxFilesize) Sets the maximal number of iterations of the retrieval algorithm.
void	setMaxSteps(int maxSteps) Sets the maximal number of iterations of the retrieval algorithm.
void	setMaxThreads(int maxThreads) Sets the maximal number of parallel threads for retrieving URIs.
void	setOutputFailedURIs(boolean outputFailedURIs) Output a list of all URIs that could not be retrieved?
void	setOutputRetrievedURIs(boolean outputRetrievedURIs) Output a list of all successfully retrieved URIs?
void	setSPARQLFile(String filename) A SPARQL query is loaded from a file and executed against the Semantic Web.
void	setSPARQLQuery(String query) Sets a SPARQL query to be executed against the Semantic Web.
void	setTimeout(long timeoutMilliseconds) Sets the timeout of the query in milliseconds.
void	setWriteGraphSet(String file, String format) Saves all graphs that have been retrieved into a file after query execution has finished.

Methods inherited from class java.lang.Object

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

Constructor Detail

CommandLineQuery

public CommandLineQuery()

Method Detail

setSPARQLQuery

public void setSPARQLQuery(String query)

Sets a SPARQL query to be executed against the Semantic Web.

Parameters:

query -

setSPARQLFile

public void setSPARQLFile(String filename)

A SPARQL query is loaded from a file and executed against the Semantic Web.

Parameters:

filename -

setFindTriple

public void setFindTriple(Triple triple)

Sets a triple pattern to be used as a query against the Semantic Web.

Parameters:

triple - An RDF triple, may contain Node.ANY wildcards

setMaxSteps

public void setMaxSteps(int maxSteps)

Sets the maximal number of iterations of the retrieval algorithm. The default value is 3.

Parameters:

maxSteps -

setMaxFilesize

public void setMaxFilesize(int maxFilesize)

Sets the maximal number of iterations of the retrieval algorithm. The default value is 3.

Parameters:

maxSteps -

setTimeout

public void setTimeout(long timeoutMilliseconds)

Sets the timeout of the query in milliseconds. The default value is 60000.

Parameters:

timeoutMilliseconds -

setMaxThreads

public void setMaxThreads(int maxThreads)

Sets the maximal number of parallel threads for retrieving URIs. The default is 10.

Parameters:

maxThreads -

setEnableGrddl

public void setEnableGrddl(boolean enableGrddl)

Enables the GRDDL transformations. The default is false.

Parameters:

enableGrddl -

addSourceURI

public void addSourceURI(String uri)

Loads a file from the Web before the query is executed.

Parameters:

uri -

setLoadGraphSet

public void setLoadGraphSet(String file,
                            String format)

Loads a set of graphs from a file before the query is executed.

Parameters:

file - Filename of the graph set file

format - "TRIG" or "TRIX"

setWriteGraphSet

public void setWriteGraphSet(String file,
                             String format)

Saves all graphs that have been retrieved into a file after query execution has finished.

Parameters:

file - Filename of the destination file

format - "TRIG" or "TRIX"

setOutputRetrievedURIs

public void setOutputRetrievedURIs(boolean outputRetrievedURIs)

Output a list of all successfully retrieved URIs?

Parameters:

outputRetrievedURIs -

setOutputFailedURIs

public void setOutputFailedURIs(boolean outputFailedURIs)

Output a list of all URIs that could not be retrieved?

Parameters:

outputFailedURIs -

run

public void run()
         throws Exception

Executes the query specified using the other options.

Throws:

Exception - Indicates an error