Example usage for com.google.common.io Closeables close

List of usage examples for com.google.common.io Closeables close

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Introduction

In this page you can find the example usage for com.google.common.io Closeables close.

Prototype

public static void close(@Nullable Closeable closeable, boolean swallowIOException) throws IOException

Source Link

Document

Closes a Closeable , with control over whether an IOException may be thrown.

Usage

From source file:eu.interedition.web.metadata.DublinCoreMetadata.java

public DublinCoreMetadata update(Text source) throws IOException, XMLStreamException {
    if (source.getType() != Text.Type.XML) {
        return this;
    }//from ww w .  jav  a  2s.  c o  m

    Reader textReader = null;
    XMLStreamReader xmlReader = null;
    try {
        textReader = source.read().getInput();
        xmlReader = XML.createXMLInputFactory().createXMLStreamReader(textReader);

        boolean inTitleStmt = false;
        StringBuilder textContent = null;
        String localName;
        while (xmlReader.hasNext()) {
            switch (xmlReader.next()) {
            case XMLStreamReader.START_ELEMENT:
                localName = xmlReader.getLocalName();
                if ("titleStmt".equals(localName)) {
                    inTitleStmt = true;
                } else if (inTitleStmt && "title".equals(localName)) {
                    textContent = new StringBuilder();
                } else if (inTitleStmt && "author".equals(localName)) {
                    textContent = new StringBuilder();
                }
                break;
            case XMLStreamReader.END_ELEMENT:
                localName = xmlReader.getLocalName();
                if ("titleStmt".equals(localName)) {
                    return this;
                } else if (inTitleStmt && "title".equals(localName)) {
                    title = textContent.toString().replaceAll("\\s+", " ");
                    textContent = null;
                } else if (inTitleStmt && "author".equals(localName)) {
                    creator = textContent.toString().replaceAll("\\s+", " ");
                    textContent = null;
                }
                break;
            case XMLStreamReader.CHARACTERS:
            case XMLStreamReader.CDATA:
                if (textContent != null) {
                    textContent.append(xmlReader.getText());
                }
            }
        }
        return this;
    } finally {
        XML.closeQuietly(xmlReader);
        Closeables.close(textReader, false);
    }
}

From source file:org.plista.kornakapi.core.training.SemanticModel.java

/**
 * method to load model from squence file
 * @throws IOException/* ww  w.j  av  a  2  s . com*/
 */
public void read() throws IOException {
    Path indexPath = path.suffix("/indexItem.model");
    if (fs.exists(indexPath)) {
        indexItem = new HashMap<Integer, String>();
        Reader reader = new SequenceFile.Reader(fs, indexPath, lconf);
        IntWritable key = new IntWritable();
        Text val = new Text();
        while (reader.next(key, val)) {
            indexItem.put(key.get(), val.toString());
        }
        Closeables.close(reader, false);
    }

    Path itemIndexPath = path.suffix("/itemIndex.model");
    if (fs.exists(itemIndexPath)) {
        itemIndex = new HashMap<String, Integer>();
        Reader reader = new SequenceFile.Reader(fs, itemIndexPath, lconf);
        IntWritable val = new IntWritable();
        Text key = new Text();
        while (reader.next(key, val)) {
            itemIndex.put(key.toString(), val.get());
        }
        Closeables.close(reader, false);
    }

    Path featurePath = path.suffix("/itemFeature.model");
    if (fs.exists(featurePath)) {
        Reader reader = new SequenceFile.Reader(fs, featurePath, lconf);
        itemFeatures = new HashMap<String, Vector>();
        Text key = new Text();
        VectorWritable val = new VectorWritable();
        while (reader.next(key, val)) {
            itemFeatures.put(key.toString(), val.get());
        }
        Closeables.close(reader, false);
    }
    if (log.isInfoEnabled()) {
        log.info("LDA Model Read");
    }

}

From source file:org.apache.mahout.math.hadoop.stochasticsvd.qr.QRFirstStep.java

protected void cleanup() throws IOException {
    try {/*from  w w w.j a va  2  s.co m*/
        if (qSolver == null && yLookahead.isEmpty()) {
            return;
        }
        if (qSolver == null) {
            qSolver = new GivensThinSolver(yLookahead.size(), kp);
        }
        // grow q solver up if necessary

        qSolver.adjust(qSolver.getCnt() + yLookahead.size());
        while (!yLookahead.isEmpty()) {

            qSolver.appendRow(yLookahead.remove(0));

        }
        assert qSolver.isFull();
        if (++blockCnt > 1) {
            flushSolver();
            assert tempQw != null;
            closeables.remove(tempQw);
            Closeables.close(tempQw, false);
        }
        flushQBlocks();

    } finally {
        IOUtils.close(closeables);
    }

}

From source file:net.yanrc.xpring.activity.component.config.ZooKeeperConfigurationSource.java

public void close() {
    try {// ww  w  .  j  a v  a  2s  . co  m
        Closeables.close(pathChildrenCache, true);
    } catch (IOException exc) {
        logger.error("IOException should not have been thrown.", exc);
    }
}

From source file:org.apache.jackrabbit.oak.plugins.blob.datastore.DataStoreBlobStore.java

@Override
public String writeBlob(InputStream stream) throws IOException {
    boolean threw = true;
    try {/*from  ww w .j  a  v a  2 s. c o m*/
        long start = System.nanoTime();
        checkNotNull(stream);
        DataRecord dr = writeStream(stream);
        String id = getBlobId(dr);
        threw = false;
        stats.uploaded(System.nanoTime() - start, TimeUnit.NANOSECONDS, dr.getLength());
        stats.uploadCompleted(id);
        return id;
    } catch (DataStoreException e) {
        throw new IOException(e);
    } finally {
        //DataStore does not closes the stream internally
        //So close the stream explicitly
        Closeables.close(stream, threw);
    }
}

From source file:eu.interedition.text.rdbms.RelationalTextRepository.java

@Override
public Text concat(Iterable<Text> texts) throws IOException {
    final FileBackedOutputStream buf = createBuffer();
    final OutputStreamWriter bufWriter = new OutputStreamWriter(buf, Text.CHARSET);
    try {//from ww  w .j a v a2 s  .co m
        for (Text text : texts) {
            read(new ReaderCallback<Void>(text) {
                @Override
                protected Void read(Clob content) throws SQLException, IOException {
                    Reader reader = null;
                    try {
                        CharStreams.copy(reader = content.getCharacterStream(), bufWriter);
                    } finally {
                        Closeables.close(reader, false);
                    }
                    return null;
                }
            });
        }
    } finally {
        Closeables.close(bufWriter, false);
    }

    Reader reader = null;
    try {
        return create(reader = new InputStreamReader(buf.getSupplier().getInput(), Text.CHARSET));
    } finally {
        Closeables.closeQuietly(reader);
        buf.reset();
    }
}

From source file:net.sourceforge.vaticanfetcher.model.search.Searcher.java

/** Updates the cached indexes and replaces the current Lucene searcher with a new one. */
@ThreadSafe/*from  w ww. j a  va2 s . c  o  m*/
@VisibleForPackageGroup
public void replaceLuceneSearcher() {
    writeLock.lock();
    try {
        Closeables.close(luceneSearcher, false);
        setLuceneSearcher(indexRegistry.getIndexes());
    } catch (IOException e) {
        ioException = e; // Will be thrown later
    } finally {
        writeLock.unlock();
    }
}

From source file:org.jclouds.examples.rackspace.DeleteAll.java

private void deleteCloudServers() throws IOException {
    NovaApi novaApi = ContextBuilder.newBuilder(System.getProperty("provider.cs", "rackspace-cloudservers-us"))
            .credentials(username, apiKey).buildApi(NovaApi.class);

    for (String region : novaApi.getConfiguredRegions()) {
        try {/*w w w.  j  a  v  a 2  s  .c o  m*/
            System.out.format("Delete Key Pairs in %s%n", region);
            KeyPairApi keyPairApi = novaApi.getKeyPairApi(region).get();

            for (KeyPair keyPair : keyPairApi.list()) {
                System.out.format("  %s%n", keyPair.getName());
                keyPairApi.delete(keyPair.getName());
            }

            System.out.format("Delete Servers in %s%n", region);
            VolumeAttachmentApi volumeAttachmentApi = novaApi.getVolumeAttachmentApi(region).get();
            ServerApi serverApi = novaApi.getServerApi(region);

            for (Server server : serverApi.listInDetail().concat().toList()) {
                for (VolumeAttachment volumeAttachment : volumeAttachmentApi
                        .listAttachmentsOnServer(server.getId())) {
                    volumeAttachmentApi.detachVolumeFromServer(volumeAttachment.getId(), server.getId());
                }

                System.out.format("  %s%n", server.getName());
                serverApi.delete(server.getId());
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    Closeables.close(novaApi, true);
}

From source file:org.apache.mahout.classifier.df.data.Dataset.java

/**
 * Loads the dataset from a file//from ww w  .  j  a  va 2 s . co m
 *
 * @throws java.io.IOException
 */
public static Dataset load(Configuration conf, Path path) throws IOException {
    FileSystem fs = path.getFileSystem(conf);
    long bytesToRead = fs.getFileStatus(path).getLen();
    byte[] buff = new byte[Long.valueOf(bytesToRead).intValue()];
    FSDataInputStream input = fs.open(path);
    try {
        input.readFully(buff);
    } finally {
        Closeables.close(input, true);
    }
    String json = new String(buff, Charset.defaultCharset());
    return fromJSON(json);
}

From source file:com.minecave.pickaxes.util.nbt.EPNbtFactory.java

/**
 * Save the content of a NBT compound to a stream.
 * <p/>/*w ww  . j av  a  2  s  . co m*/
 * Use {@link Files#newOutputStreamSupplier(java.io.File)} to provide a stream supplier to a file.
 *
 * @param source - the NBT compound to save.
 * @param stream - the stream.
 * @param option - whether or not to compress the output.
 * @throws IOException If anything went wrong.
 */
public static void saveStream(NbtCompound source, OutputSupplier<? extends OutputStream> stream,
        StreamOptions option) throws IOException {
    OutputStream output = null;
    DataOutputStream data = null;
    boolean suppress = true;

    try {
        output = stream.getOutput();
        data = new DataOutputStream(
                option == StreamOptions.GZIP_COMPRESSION ? new GZIPOutputStream(output) : output);

        invokeMethod(get().SAVE_COMPOUND, null, source.getHandle(), data);
        suppress = false;

    } finally {
        if (data != null)
            Closeables.close(data, suppress);
        else if (output != null)
            Closeables.close(output, suppress);
    }
}