Package com.complexible.common.rdf

Class StatementSources

java.lang.Object

com.complexible.common.rdf.StatementSources

public final class StatementSources
extends Object

Utility class for working with StatementSources

Since:

0.8

Version:

6.0

Author:

Michael Grove

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	StatementSources.RDFStreamStatementSource

Method Summary

Modifier and Type	Method	Description
static void	closeQuietly(StatementSource theSource)	Quietly close the statement source, ignoring an exceptions and simply logging them rather than re-throwing.
static StatementSource	concat(StatementSource theSource, StatementSource theOther, StatementSource... theRest)
static StatementSource	concat(Iterable<StatementSource> theSource)
static StatementSource	copyContext(StatementSource theSrc, Resource theSourceContext, Resource theTargetContext)
static StatementSource	empty()
static StatementSource	filter(StatementSource theSource, Predicate<Statement> theFilter)
static StatementSource	obfuscated(StatementSource theSource, RDFObfuscator theObfuscator)
static long	size(StatementSource theSrc)	Return the size (number of triples) in the StatementSource
static Set<Statement>	toModel(StatementSource theSrc)	Read the contents of a StatementSource into a graph.
static StatementSource	usingContext(StatementSource theSrc, Resource theContext)
static StatementSource	virtual(StatementSource theSource)
static StatementSource	withFallbackContext(StatementSource theSrc, Resource theContext)
static long	write(StatementSource theSource, RDFFormat theFormat, OutputStream theOutputStream, ProgressReporter theReporter)	Write the contents of the StatementSource in the specified format to the output stream
static long	write(StatementSource theSource, RDFWriter theWriter, ProgressReporter theReporter)	Write the contents of the StatementSource to the Rio writer
static long	write(StatementSource theSource, Optional<Iterable<Namespace>> theNamespaces, RDFWriter theWriter, ProgressReporter theReporter)

Methods inherited from class java.lang.Object

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

Method Details

closeQuietly

public static void closeQuietly(StatementSource theSource)

Quietly close the statement source, ignoring an exceptions and simply logging them rather than re-throwing.

Parameters:

theSource - the source to close.

empty

public static StatementSource empty()

concat

public static StatementSource concat(Iterable<StatementSource> theSource)

concat

public static StatementSource concat(StatementSource theSource,
 StatementSource theOther,
 StatementSource... theRest)

copyContext

public static StatementSource copyContext(StatementSource theSrc,
 Resource theSourceContext,
 Resource theTargetContext)

usingContext

public static StatementSource usingContext(StatementSource theSrc,
 Resource theContext)

withFallbackContext

public static StatementSource withFallbackContext(StatementSource theSrc,
 Resource theContext)

toModel

public static Set<Statement> toModel(StatementSource theSrc)
                              throws IOException

Read the contents of a StatementSource into a graph. Be careful when calling this method as this will put the entire contents of the StatementSource into memory as a Graph, so large StatementSources could cause OOM errors.

Parameters:

theSrc - the source to read into a graph

Returns:

the contents of the source as a graph

Throws:

IOException - if there was an error while reading from the source

size

public static long size(StatementSource theSrc)
                 throws IOException

Return the size (number of triples) in the StatementSource

Parameters:

theSrc - the source

Returns:

the size in triples

Throws:

IOException - if there was an error reading from the source

write

public static long write(StatementSource theSource,
 RDFFormat theFormat,
 OutputStream theOutputStream,
 ProgressReporter theReporter)
                  throws IOException

Write the contents of the StatementSource in the specified format to the output stream

Parameters:

theSource - the source whose contents should be written

theFormat - the RDF format to use when writing

theOutputStream - the stream to write to

Throws:

IOException - if there was an error getting a statement from the source

write

public static long write(StatementSource theSource,
 RDFWriter theWriter,
 ProgressReporter theReporter)
                  throws IOException

Write the contents of the StatementSource to the Rio writer

Parameters:

theSource - the source to write

theWriter - the writer to write the source to

Throws:

IOException - if there is an error while writing

write

public static long write(StatementSource theSource,
 Optional<Iterable<Namespace>> theNamespaces,
 RDFWriter theWriter,
 ProgressReporter theReporter)
                  throws IOException

Throws:

IOException

filter

public static StatementSource filter(StatementSource theSource,
 Predicate<Statement> theFilter)

obfuscated

public static StatementSource obfuscated(StatementSource theSource,
 RDFObfuscator theObfuscator)

virtual

public static StatementSource virtual(StatementSource theSource)