Example usage for java.io DataInputStream readUTF

Introduction

In this page you can find the example usage for java.io DataInputStream readUTF.

Prototype

public final String readUTF() throws IOException 

Source Link

Document

See the general contract of the readUTF method of DataInput.

Usage

From source file:org.apache.reef.io.data.loading.impl.DistributedDataSetPartitionSerializer.java

public static DistributedDataSetPartition deserialize(final String serializedPartition) {
    try (ByteArrayInputStream bais = new ByteArrayInputStream(Base64.decodeBase64(serializedPartition))) {
        final DataInputStream dais = new DataInputStream(bais);
        return new DistributedDataSetPartition(dais.readUTF(), dais.readUTF(), dais.readInt());
    } catch (final IOException e) {
        throw new RuntimeException("Unable to de-serialize distributed data partition", e);
    }/*w ww.  j  a v  a2  s  .  c  o m*/
}

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From source file:com.koda.common.lcm.Tool.java

public static Object fromFile(String fileName) throws IOException {
    FileInputStream fis = new FileInputStream(fileName);
    DataInputStream dis = new DataInputStream(fis);
    String s = dis.readUTF();
    dis.close();/* www .  j ava  2 s .c om*/
    return undoObject(s);
}

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From source file:com.microsoft.tfs.client.eclipse.resourcedata.ResourceData.java

/**
 * Deserializes a {@link ResourceData} object from a byte array.
 *
 * @param value/*from  w ww. ja va2  s  .  c  o m*/
 *        the byte array (not null)
 * @return the deserialized {@link ResourceData} or <code>null</code> if
 *         there was a problem deserializing
 */
public static ResourceData fromByteArray(final byte[] value) {
    Check.notNull(value, "value"); //$NON-NLS-1$

    try {
        final ByteArrayInputStream is = new ByteArrayInputStream(value);
        final DataInputStream dis = new DataInputStream(is);

        return new ResourceData(dis.readUTF(), dis.readInt());
    } catch (final IOException e) {
        log.error("Error deserializing", e); //$NON-NLS-1$
        return null;
    }
}

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From source file:io.hops.hopsworks.common.jobs.yarn.LogReader.java

/**
 * Keep calling this till you get a {@link EOFException} for getting logs of
 * all types for a single container./*  w ww.j  a va2s . c  o m*/
 *
 * @param valueStream
 * @param out
 * @throws IOException
 */
public static void readAContainerLogsForALogType(DataInputStream valueStream, PrintStream out)
        throws IOException {

    byte[] buf = new byte[65535];

    String fileType = valueStream.readUTF();
    String fileLengthStr = valueStream.readUTF();
    long fileLength = Long.parseLong(fileLengthStr);
    out.print("LogType: ");
    out.println(fileType);
    out.print("LogLength: ");
    out.println(fileLengthStr);
    out.println("Log Contents:");

    long curRead = 0;
    long pendingRead = fileLength - curRead;
    int toRead = pendingRead > buf.length ? buf.length : (int) pendingRead;
    int len = valueStream.read(buf, 0, toRead);
    while (len != -1 && curRead < fileLength) {
        out.write(buf, 0, len);
        curRead += len;

        pendingRead = fileLength - curRead;
        toRead = pendingRead > buf.length ? buf.length : (int) pendingRead;
        len = valueStream.read(buf, 0, toRead);
    }
    out.println("");
}

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From source file:com.splout.db.benchmark.TCPTest.java

public static void tcpTest(String file, String table)
        throws UnknownHostException, IOException, InterruptedException, JSONSerDeException {
    final TCPServer server = new TCPServer(8888, file, table);

    Thread t = new Thread() {
        @Override/*from  w  w w.j a v  a2 s. c  o m*/
        public void run() {
            server.serve();
        }
    };
    t.start();

    while (!server.isServing()) {
        Thread.sleep(100);
    }

    Socket clientSocket = new Socket("localhost", 8888);
    DataInputStream inFromServer = new DataInputStream(new BufferedInputStream(clientSocket.getInputStream()));

    try {
        do {
            // Read a record
            inFromServer.readUTF();
            inFromServer.readInt();
            inFromServer.readDouble();
            inFromServer.readUTF();
        } while (true);
    } catch (Throwable th) {
        th.printStackTrace();
    }

    clientSocket.close();
    server.stop();
    t.interrupt();
}

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From source file:Main.java

public static Object[] readSettings(String file) throws IOException {
    DataInputStream in = new DataInputStream(new FileInputStream(file));
    try {/*from w  w  w .j  av  a 2s.  c  om*/
        Object[] res = new Object[in.readInt()];
        for (int i = 0; i < res.length; i++) {
            char cl = in.readChar();
            switch (cl) {
            case 'S':
                res[i] = in.readUTF();
                break;
            case 'F':
                res[i] = in.readFloat();
                break;
            case 'D':
                res[i] = in.readDouble();
                break;
            case 'I':
                res[i] = in.readInt();
                break;
            case 'L':
                res[i] = in.readLong();
                break;
            case 'B':
                res[i] = in.readBoolean();
                break;
            case 'Y':
                res[i] = in.readByte();
                break;
            default:
                throw new IllegalStateException("cannot read type " + cl + " from " + file);
            }
        }
        return res;
    } finally {
        in.close();
    }
}

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From source file:org.apache.jackrabbit.core.persistence.util.Serializer.java

/**
 * Deserializes a <code>NodeState</code> object from the given binary
 * <code>stream</code>.//from www .j a v a  2 s . c  o m
 *
 * @param state  <code>state</code> to deserialize
 * @param stream the stream where the <code>state</code> should be deserialized from
 * @throws Exception if an error occurs during the deserialization
 * @see #serialize(NodeState, OutputStream)
 */
public static void deserialize(NodeState state, InputStream stream) throws Exception {
    DataInputStream in = new DataInputStream(stream);

    // primaryType
    String s = in.readUTF();
    state.setNodeTypeName(NameFactoryImpl.getInstance().create(s));
    // parentUUID (may be null)
    byte[] uuidBytes = new byte[NodeId.UUID_BYTE_LENGTH];
    in.readFully(uuidBytes);
    if (!Arrays.equals(uuidBytes, NULL_UUID_PLACEHOLDER_BYTES)) {
        state.setParentId(new NodeId(uuidBytes));
    }
    // definitionId
    in.readUTF();
    // mixin types
    int count = in.readInt(); // count
    Set<Name> set = new HashSet<Name>(count);
    for (int i = 0; i < count; i++) {
        set.add(NameFactoryImpl.getInstance().create(in.readUTF()));
    }
    if (set.size() > 0) {
        state.setMixinTypeNames(set);
    }
    // modCount
    short modCount = in.readShort();
    state.setModCount(modCount);
    // properties (names)
    count = in.readInt(); // count
    for (int i = 0; i < count; i++) {
        state.addPropertyName(NameFactoryImpl.getInstance().create(in.readUTF())); // name
    }
    // child nodes (list of name/uuid pairs)
    count = in.readInt(); // count
    for (int i = 0; i < count; i++) {
        Name name = NameFactoryImpl.getInstance().create(in.readUTF()); // name
        // uuid
        in.readFully(uuidBytes);
        state.addChildNodeEntry(name, new NodeId(uuidBytes));
    }
}

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From source file:io.hops.hopsworks.common.jobs.yarn.LogReader.java

/**
 * Writes all logs for a single container to the provided writer.
 *
 * @param valueStream/*from   w  w w  .jav a  2  s.  c o  m*/
 * @param writer
 * @throws IOException
 */
public static void readAcontainerLogs(DataInputStream valueStream, Writer writer) throws IOException {
    int bufferSize = 65536;
    char[] cbuf = new char[bufferSize];
    String fileType;
    String fileLengthStr;
    long fileLength;

    while (true) {
        try {
            fileType = valueStream.readUTF();
        } catch (EOFException e) {
            // EndOfFile
            return;
        }
        fileLengthStr = valueStream.readUTF();
        fileLength = Long.parseLong(fileLengthStr);
        writer.write("\n\nLogType:");
        writer.write(fileType);
        writer.write("\nLogLength:");
        writer.write(fileLengthStr);
        writer.write("\nLog Contents:\n");
        // ByteLevel
        BoundedInputStream bis = new BoundedInputStream(valueStream, fileLength);
        InputStreamReader reader = new InputStreamReader(bis);
        int currentRead = 0;
        int totalRead = 0;
        while ((currentRead = reader.read(cbuf, 0, bufferSize)) != -1) {
            writer.write(cbuf, 0, currentRead);
            totalRead += currentRead;
        }
    }
}

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From source file:ja.lingo.engine.mergedindex.ChannelMergedIndex.java

private static Map<Integer, IDictionaryIndex> _deserializeReaderIdToReaderMap(DataInputStream dis,
        Map<String, IDictionaryIndex> indexFileNameToReaderMap) throws IOException {
    Map<Integer, IDictionaryIndex> readerIdToReaderMap = new HashMap<Integer, IDictionaryIndex>();

    int readerCount = dis.readInt();

    for (int i = 0; i < readerCount; i++) {
        int readerId = dis.readInt();
        String indexFileName = dis.readUTF();

        IDictionaryIndex reader = indexFileNameToReaderMap.get(indexFileName);

        if (reader == null) {
            throw new IOException("Unable to retrieve reader with readerId=\"" + readerId
                    + "\" and indexFileName=\"" + indexFileName + "\"");
        }//ww  w  .j  a v a2 s.c  o  m

        readerIdToReaderMap.put(readerId, reader);
    }

    return readerIdToReaderMap;
}

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From source file:org.apache.jackrabbit.core.persistence.util.Serializer.java

/**
 * Deserializes a <code>NodeReferences</code> object from the given
 * binary <code>stream</code>.
 *
 * @param refs   object to deserialize//from  w ww  . jav  a2s.co  m
 * @param stream the stream where the object should be deserialized from
 * @throws Exception if an error occurs during the deserialization
 * @see #serialize(NodeReferences, OutputStream)
 */
public static void deserialize(NodeReferences refs, InputStream stream) throws Exception {
    DataInputStream in = new DataInputStream(stream);

    refs.clearAllReferences();

    // references
    int count = in.readInt(); // count
    for (int i = 0; i < count; i++) {
        refs.addReference(PropertyId.valueOf(in.readUTF())); // propertyId
    }
}

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