Package com.semedy.reasoner.api.edb

Class LoaderProvider

java.lang.Object

com.semedy.reasoner.api.edb.LoaderProvider

All Implemented Interfaces:

Iterable<Loader>

public class LoaderProvider
extends Object
implements Iterable<Loader>

Handles loading facts from different sources like json, csv, nquads.
Handles also zipped versions of files

Author:

angele

Constructor Summary

Constructors

Constructor	Description
LoaderProvider(ExtensionalDB edb, InvertedIndices invertedIndices, String tempDir, Configuration config)

Method Summary

Modifier and Type	Method	Description
Iterator<Loader>	iterator()	returns an iterator for all loaders
void	load(Collection<String> paths, SymbolTable symbols, ExternalDataTypeProvider dataTypes)	load facts from files
void	loadByStream(InputStream stream, InputStream companionstream, String format, SymbolTable symbols, ExternalDataTypeProvider dataTypes)	load facts by stream. format is either the file format like json,nq etc.
void	registerLoader(Loader loader)	register a new loader
void	removeLoader(String format)	Remove importer by its format

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Constructor Details

LoaderProvider

public LoaderProvider(ExtensionalDB edb,
 InvertedIndices invertedIndices,
 String tempDir,
 Configuration config)

Method Details

registerLoader

public void registerLoader(Loader loader)

register a new loader

Parameters:

loader -

load

public void load(Collection<String> paths,
 SymbolTable symbols,
 ExternalDataTypeProvider dataTypes)
          throws IOException,
InterruptedException,
SemReasonerException

load facts from files

Throws:

IOException

SemReasonerException

InterruptedException

loadByStream

public void loadByStream(InputStream stream,
 InputStream companionstream,
 String format,
 SymbolTable symbols,
 ExternalDataTypeProvider dataTypes)
                  throws UnsupportedEncodingException,
IOException,
SemReasonerException,
InterruptedException

load facts by stream. format is either the file format like json,nq etc. In case of raw it is the predicate like value|3

Parameters:

stream -

companionstream -

format -

Throws:

UnsupportedEncodingException

IOException

SemReasonerException

InterruptedException

removeLoader

public void removeLoader(String format)

Remove importer by its format

Parameters:

format -

iterator

public Iterator<Loader> iterator()

returns an iterator for all loaders

Specified by:

iterator in interface Iterable<Loader>