Java RDFFormat.forFileName方法代碼示例

import org.openrdf.rio.RDFFormat; //導入方法依賴的package包/類
private static void checkFileParseable(@Nullable final File file,
        @Nullable final String formatString) {
    if (file == null) {
        if (formatString == null) {
            throw new IllegalArgumentException("Cannot detect RDF format "
                    + "and compression of STDIN: please specify option -s");
        }
        return;
    }
    checkFileExist(file);
    final RDFFormat defaultFormat = detectRDFFormat(formatString, null);
    final Compression defaultCompression = detectCompression(formatString, null);
    final RDFFormat format = RDFFormat.forFileName(file.getName());
    if (format == null && defaultFormat == null) {
        throw new IllegalArgumentException("Unknown RDF format for file " + file);
    } else if (format != null && defaultFormat != null && !format.equals(defaultFormat)) {
        System.err.println("Warning: detected RDF format for file " + file
                + " doesn't match specified format");
    }
    final Compression compression = Compression.forFileName(file.getName(), Compression.NONE);
    if (defaultCompression != null && !compression.equals(defaultCompression)) {
        System.err.println("Warning: detected compression format for file " + file
                + " doesn't match specified format");
    }
}
 

import org.openrdf.rio.RDFFormat; //導入方法依賴的package包/類
public FileDocumentIO(boolean validate) {
	File file = SBOLUtils.setupFile();
	String fileName = file.getName();
	RDFFormat format = fileName.endsWith(".xml") ? RDFFormat.RDFXML
			: RDFFormat.forFileName(fileName, RDFFormat.RDFXML);
	// reader = SublimeSBOLFactory.createReader(format, validate);
	// writer = SublimeSBOLFactory.createWriter(format, validate);
}
 

import org.openrdf.rio.RDFFormat; //導入方法依賴的package包/類
@Override
public synchronized void init() throws IOException, IllegalStateException {
    Preconditions.checkState(!this.initialized && !this.closed);
    this.initialized = true;

    InputStream stream = null;
    try {
        if (this.fileSystem.exists(this.filePath)) {
            stream = Files.readWithBackup(this.fileSystem, this.filePath);
            final RDFFormat format = RDFFormat.forFileName(this.filePath.getName());
            final List<Record> records = Record.decode(
                    RDFUtil.readRDF(stream, format, null, null, false),
                    ImmutableSet.of(KS.RESOURCE, KS.MENTION, KS.ENTITY, KS.CONTEXT), false)
                    .toList();
            for (final Record record : records) {
                final URI id = Preconditions.checkNotNull(record.getID());
                final URI type = Preconditions.checkNotNull(record.getSystemType());
                MemoryDataStore.this.tables.get(type).put(id, record);
            }
            MemoryDataStore.LOGGER.info("{} initialized, {} records loaded", this.getClass()
                    .getSimpleName(), records.size());
        } else {
            MemoryDataStore.LOGGER.info("{} initialized, no record loaded", this.getClass()
                    .getSimpleName());
        }
    } finally {
        Util.closeQuietly(stream);
    }
}
 

import org.openrdf.rio.RDFFormat; //導入方法依賴的package包/類
private synchronized void update(final Map<URI, Map<URI, Record>> tables, final int revision)
        throws IOException {
    if (this.revision != revision) {
        throw new IOException("Commit failed due to concurrent modifications " + this.revision
                + ", " + revision);
    }

    OutputStream stream = null;
    try {
        stream = Files.writeWithBackup(this.fileSystem, this.filePath);
        final List<Record> records = Lists.newArrayList();
        for (final URI type : tables.keySet()) {
            records.addAll(tables.get(type).values());
        }
        final RDFFormat format = RDFFormat.forFileName(this.filePath.getName());
        RDFUtil.writeRDF(stream, format, Data.getNamespaceMap(), null,
                Record.encode(Stream.create(records), ImmutableSet.<URI>of()));
        ++this.revision;
        this.tables = tables;
        MemoryDataStore.LOGGER.info("MemoryDataStore updated, {} records persisted",
                records.size());

    } catch (final Throwable ex) {
        MemoryDataStore.LOGGER.error("MemoryDataStore update failed", ex);

    } finally {
        Util.closeQuietly(stream);
    }
}
 

import org.openrdf.rio.RDFFormat; //導入方法依賴的package包/類
private static List<Record> loadRecords(final String resourceName) {
    final InputStream in = ClientExample.class.getResourceAsStream(resourceName);
    try {
        final RDFFormat format = RDFFormat.forFileName(resourceName);
        final Stream<Statement> stmt = RDFUtil.readRDF(in, format, null, null, false);
        return Record.decode(stmt, ImmutableList.of(KS.RESOURCE, KS.MENTION), false).toList();
    } finally {
        Util.closeQuietly(in);
    }
}
 

import org.openrdf.rio.RDFFormat; //導入方法依賴的package包/類
private RDFFormat forFileName(String path, RDFFormat fallback) {
	RDFFormat format = RDFFormat.forFileName(path);
	RDFParserRegistry registry = RDFParserRegistry.getInstance();
	if (format != null && registry.has(format))
		return format;
	return fallback;
}
 

import org.openrdf.rio.RDFFormat; //導入方法依賴的package包/類
@CliCommand(value = LOAD_DATA_CMD, help = "Loads RDF Statement data from a local file to the connected Rya instance.")
public String loadData(
        @CliOption(key = { "file" }, mandatory = true, help = "A local file containing RDF Statements that is to be loaded.")
        final String file,
        @CliOption(key = { "format" }, mandatory = false, help = "The format of the supplied RDF Statements file. [RDF/XML, N-Triples, Turtle, N3, TriX, TriG, BinaryRDF, N-Quads, JSON-LD, RDF/JSON, RDFa]")
        final String format
        ) {
    // Fetch the command that is connected to the store.
    final ShellState shellState = state.getShellState();
    final RyaClient commands = shellState.getConnectedCommands().get();
    final Optional<String> ryaInstanceName = shellState.getRyaInstanceName();
    try {
        final long start = System.currentTimeMillis();

        // If the provided path is relative, then make it rooted in the user's home.
        Path rootedFile = Paths.get( file.replaceFirst("^~", System.getProperty("user.home")) );

        RDFFormat rdfFormat = null;
        // If a format was provided, then go with that.
        if (format != null) {
            rdfFormat = RDFFormat.valueOf(format);
            if (rdfFormat == null) {
                throw new RuntimeException("Unsupported RDF Statement data input format: " + format);
            }
        }

        // Otherwise try to figure it out using the filename.
        else if (rdfFormat == null) {
            rdfFormat = RDFFormat.forFileName(rootedFile.getFileName().toString());
            if (rdfFormat == null) {
                throw new RuntimeException("Unable to detect RDF Statement data input format for file: " + rootedFile);
            } else {
                consolePrinter.println("Detected RDF Format: " + rdfFormat);
                consolePrinter.flush();
            }
        }
        commands.getLoadStatementsFile().loadStatements(ryaInstanceName.get(), rootedFile, rdfFormat);

        final String seconds = new DecimalFormat("0.0##").format((System.currentTimeMillis() - start) / 1000.0);
        return "Loaded the file: '" + file + "' successfully in " + seconds + " seconds.";

    } catch (final RyaClientException | IOException e) {
        log.error("Error", e);
        throw new RuntimeException("Can not load the RDF Statement data. Reason: " + e.getMessage(), e);
    }
}
 

import org.openrdf.rio.RDFFormat; //導入方法依賴的package包/類
@Override
public void fromFile(final Path statementsPath, final String visibilities) throws RyaStreamsException {
    requireNonNull(statementsPath);
    requireNonNull(visibilities);

    if(!statementsPath.toFile().exists()) {
        throw new RyaStreamsException("Could not load statements at path '" + statementsPath + "' because that " +
                "does not exist. Make sure you've entered the correct path.");
    }

    // Create an RDF Parser whose format is derived from the statementPath's file extension.
    final RDFFormat format = RDFFormat.forFileName(statementsPath.getFileName().toString());
    final RDFParser parser = Rio.createParser(format);

    // Set a handler that writes the statements to the specified kafka topic.
    parser.setRDFHandler(new RDFHandlerBase() {
        @Override
        public void startRDF() throws RDFHandlerException {
            log.trace("Starting loading statements.");
        }

        @Override
        public void handleStatement(final Statement stmnt) throws RDFHandlerException {
            final VisibilityStatement visiStatement = new VisibilityStatement(stmnt, visibilities);
            producer.send(new ProducerRecord<>(topic, visiStatement));
        }

        @Override
        public void endRDF() throws RDFHandlerException {
            producer.flush();
            log.trace("Done.");
        }
    });

    // Do the parse and load.
    try {
        parser.parse(Files.newInputStream(statementsPath), "");
    } catch (RDFParseException | RDFHandlerException | IOException e) {
        throw new RyaStreamsException("Could not load the RDF file's Statements into Rya Streams.", e);
    }
}
 

import org.openrdf.rio.RDFFormat; //導入方法依賴的package包/類
private static RDFFormat detectRDFFormat(@Nullable final String string,
        final RDFFormat fallback) {
    return string == null ? fallback : RDFFormat.forFileName("dummy." + string.trim(),
            fallback);
}
 

import org.openrdf.rio.RDFFormat; //導入方法依賴的package包/類
private static void readRDFHelper(@Nullable final File file, @Nullable final RDFFormat format,
        @Nullable final Map<String, String> namespaces, @Nullable final String base,
        final boolean preserveBNodes, @Nullable final Compression compression,
        final RDFHandler handler) throws IOException, RDFParseException, RDFHandlerException {

    // Detect file format
    RDFFormat actualFormat = format;
    if (actualFormat == null) {
        if (file == null) {
            throw new IllegalArgumentException("Cannot detect RDF format of STDIN");
        }
        actualFormat = RDFFormat.forFileName(file.getName());
    }

    // Detect file compression
    Compression actualCompression = compression;
    if (actualCompression == null) {
        actualCompression = file == null ? Compression.NONE : Compression.forFileName(
                file.getName(), Compression.NONE);
    }

    // Perform parsing, wrapping possible exceptions so to report the file name
    InputStream stream = null;
    try {
        stream = file == null ? System.in : actualCompression.read(Data.getExecutor(), file);
        readRDF(stream, actualFormat, namespaces, base, preserveBNodes, handler);

    } catch (final Throwable ex) {
        final String message = "Parsing of " + (file == null ? "STDIN" : file)
                + " using format " + actualFormat + " and compression " + actualCompression
                + " failed: " + ex.getMessage();
        if (ex instanceof IOException) {
            throw new IOException(message, ex);
        } else if (ex instanceof RDFParseException) {
            throw new RDFParseException(message, ex);
        } else if (ex instanceof RDFHandlerException) {
            throw new RDFHandlerException(message, ex);
        }
        throw new RuntimeException(message, ex);
    } finally {
        if (stream != System.in) {
            Util.closeQuietly(stream);
        }
    }
}