com.bigdata.rdf.sail

Class ExportKB

java.lang.Object

com.bigdata.rdf.sail.ExportKB

public class ExportKB
extends Object

Utility class for exporting the configuration properties and data associated with one or more KBs on a Journal.

Author:

Bryan Thompson

See Also:

Data Migration.

Constructor Summary

Constructors

Constructor and Description
ExportKB(BigdataSail.BigdataSailConnection conn, File kbdir, org.openrdf.rio.RDFFormat format, boolean includeInferred)

Method Summary

Methods

Modifier and Type	Method and Description
void	export() Export the properties and data for the KB.
void	exportData() Exports all told statements associated with the last commit point for the KB.
void	exportProperties() Export the configuration properties for the kb.
static Properties	flatCopy(Properties props)
static void	main(String[] args) Export one or more KBs from a Journal.
void	prepare()

Methods inherited from class java.lang.Object

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

Constructor Detail

ExportKB

public ExportKB(BigdataSail.BigdataSailConnection conn,
        File kbdir,
        org.openrdf.rio.RDFFormat format,
        boolean includeInferred)

Parameters:

conn - The connection.

kbdir - The directory into which the exported properties and RDF data will be written.

format - The RDFFormat to use when exporting the data.

includeInferred - When true inferences and axioms will also be exported. Otherwise just the explicitly given (aka told) triples/quads will be exported.

Method Detail

export

public void export()
            throws IOException,
                   org.openrdf.sail.SailException,
                   org.openrdf.rio.RDFHandlerException

Export the properties and data for the KB.

Throws:

IOException

org.openrdf.sail.SailException

org.openrdf.rio.RDFHandlerException

prepare

public void prepare()
             throws IOException

Throws:

IOException

exportProperties

public void exportProperties()
                      throws IOException

Export the configuration properties for the kb.

Throws:

IOException

exportData

public void exportData()
                throws IOException,
                       org.openrdf.sail.SailException,
                       org.openrdf.rio.RDFHandlerException

Exports all told statements associated with the last commit point for the KB.

Throws:

IOException

org.openrdf.sail.SailException

org.openrdf.rio.RDFHandlerException

flatCopy

public static Properties flatCopy(Properties props)

main

public static void main(String[] args)
                 throws Exception

Export one or more KBs from a Journal. The only required argument is the name of the properties file for the Journal. By default all KB instances found on the journal will be exported into the current working directory. Each KB will be written into a subdirectory based on the namespace of the KB.

Parameters:

args - [options] propertyFile namespace* where options is any of:

-outdir

The output directory (default is the current working directory)

-format

The RDFFormat which will be used to export the data. If not specified then an appropriate format will be selected based on the KB configuration. The default for triples or SIDs is RDFFormat.RDFXML. The default for quads is RDFFormat.TRIX.

-includeInferred

Normally only the told triples/quads will be exported. This option may be given to export the axioms and inferences as well as the told triples/quads.

-n

Do nothing, but show the KBs which would be exported.

-help

Display the usage message and exit.

where propertyFile is the properties file for the Journal.
where namespace is zero or more namespaces of KBs to export from the Journal. If no namespace is given, then all KBs on the Journal will be exported.

Throws:

Exception