Example usage for java.io DataInputStream DataInputStream

List of usage examples for java.io DataInputStream DataInputStream

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Introduction

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

Prototype

public DataInputStream(InputStream in)

Source Link

Document

Creates a DataInputStream that uses the specified underlying InputStream.

Usage

From source file:HttpGETMIDlet.java

private String requestUsingGET(String URLString) throws IOException {
    HttpConnection hpc = null;//from  w  ww .  jav  a  2  s .c o  m
    DataInputStream dis = null;
    boolean newline = false;
    String content = "";
    try {
        hpc = (HttpConnection) Connector.open(URLString);
        dis = new DataInputStream(hpc.openInputStream());
        int character;

        while ((character = dis.read()) != -1) {
            if ((char) character == '\\') {
                newline = true;
                continue;
            } else {
                if ((char) character == 'n' && newline) {
                    content += "\n";
                    newline = false;
                } else if (newline) {
                    content += "\\" + (char) character;
                    newline = false;
                } else {
                    content += (char) character;
                    newline = false;
                }
            }

        }
        if (hpc != null)
            hpc.close();
        if (dis != null)
            dis.close();
    } catch (IOException e2) {
    }

    return content;
}

From source file:eu.learnpad.simulator.mon.utils.Manager.java

/**
 * It reads text from file and provides it on string
 *     * /*from  w  w w .  j  a v  a 2  s. c  om*/
 * @param filePath the file to read path
 * @return a String containing all the file text
 */
@SuppressWarnings("deprecation")
public static String ReadTextFromFile(String filePath) {
    File file = new File(filePath);
    FileInputStream fis = null;
    BufferedInputStream bis = null;
    DataInputStream dis = null;
    StringBuilder strB = new StringBuilder();

    try {
        fis = new FileInputStream(file);

        // Here BufferedInputStream is added for fast reading.
        bis = new BufferedInputStream(fis);
        dis = new DataInputStream(bis);

        while (dis.available() != 0) {
            // this statement reads the line from the file and print it to
            // the console.
            strB.append(dis.readLine());

        }
        // dispose all the resources after using them.
        fis.close();
        bis.close();
        dis.close();
    } catch (IOException e) {
        e.printStackTrace();
    }
    return strB.toString();
}

From source file:com.mozilla.hadoop.hbase.mapreduce.MultiScanTableMapReduceUtil.java

/**
 * Converts base64 scans string back into a Scan array
 * @param base64/* w  w  w.j  a v  a 2  s  .  c o m*/
 * @return
 * @throws IOException
 */
public static Scan[] convertStringToScanArray(final String base64) throws IOException {
    final DataInputStream dis = new DataInputStream(new ByteArrayInputStream(Base64.decode(base64)));

    ArrayWritable aw = new ArrayWritable(Scan.class);
    aw.readFields(dis);

    Writable[] writables = aw.get();
    Scan[] scans = new Scan[writables.length];
    for (int i = 0; i < writables.length; i++) {
        scans[i] = (Scan) writables[i];
    }

    return scans;
}

From source file:com.cloudera.recordbreaker.analyzer.UnknownTextSchemaDescriptor.java

public UnknownTextSchemaDescriptor(DataDescriptor dd, String schemaRepr, byte[] miscPayload)
        throws IOException {
    super(dd, schemaRepr);
    this.randId = new Random().nextInt();

    // Deserialize the payload string into the parser
    DataInputStream in = new DataInputStream(new ByteArrayInputStream(miscPayload));
    try {/*from www  .  j a v  a2s .  c  o  m*/
        this.typeTree = InferredType.readType(in);
    } finally {
        in.close();
    }
}

From source file:HttpHEADMIDlet.java

private String requestUsingGET(String URLString) throws IOException {
    HttpConnection hpc = null;/*from   ww  w . ja va 2  s .  c o m*/
    DataInputStream dis = null;

    String content = "";
    try {
        hpc = (HttpConnection) Connector.open(URLString);
        hpc.setRequestMethod(HttpConnection.HEAD);

        dis = new DataInputStream(hpc.openInputStream());
        int i = 1;
        String key = "";
        String value = "";

        while ((value = hpc.getHeaderField(i)) != null) {
            key = hpc.getHeaderFieldKey(i++);
            content += key + ":" + value + "\n";
        }
        if (hpc != null)
            hpc.close();
        if (dis != null)
            dis.close();
    } catch (IOException e2) {
    }

    return content;
}

From source file:com.splunk.hunk.input.packet.DnsPcapRecordReader.java

@Override
public void vixInitialize(VixInputSplit split, TaskAttemptContext context)
        throws IOException, InterruptedException {
    //gLogger.info("takashi:TgzPacketRecordReader:vixInitialize is called");

    FileSystem fs = FileSystem.get(context.getConfiguration());
    fsDataIn = fs.open(split.getPath());
    pcapReader = initPcapReader(packet_type_class, new DataInputStream(fsDataIn));

    packetIterator = pcapReader.iterator();
    totalBytesToRead = split.getLength() - split.getStart();
    objectPreProcessor = new DnsPacketEventProcessor();
}

From source file:edu.umd.shrawanraina.BooleanRetrievalCompressed.java

private PairOfWritables<IntWritable, ArrayListWritable<PairOfInts>> readPost(BytesWritable value)
        throws IOException {
    byte[] val = value.getBytes();

    ByteArrayInputStream postings = new ByteArrayInputStream(val);
    DataInputStream stream = new DataInputStream(postings);

    ArrayListWritable<PairOfInts> pInt = new ArrayListWritable<PairOfInts>();
    int currentDocNo = 0;
    int dgap = 0;
    int tf = -1;/*from w w w .  j av  a 2 s. c  o  m*/
    int postingList = WritableUtils.readVInt(stream);

    for (int i = 0; i < postingList; i++) {
        dgap = WritableUtils.readVInt(stream);
        tf = WritableUtils.readVInt(stream);
        currentDocNo = currentDocNo + dgap;
        pInt.add(new PairOfInts(currentDocNo, tf));
    }
    //System.out.println("posting: "+new IntWritable(postingList));
    //System.out.println("pInt: "+pInt);
    return new PairOfWritables<IntWritable, ArrayListWritable<PairOfInts>>(new IntWritable(postingList), pInt);
}

From source file:com.splunk.hunk.input.packet.HttpPcapRecordReader.java

@Override
public void vixInitialize(VixInputSplit split, TaskAttemptContext context)
        throws IOException, InterruptedException {
    //gLogger.info("takashi:TgzPacketRecordReader:vixInitialize is called");

    FileSystem fs = FileSystem.get(context.getConfiguration());
    fsDataIn = fs.open(split.getPath());
    pcapReader = initPcapReader(packet_type_class, new DataInputStream(fsDataIn));

    packetIterator = pcapReader.iterator();
    totalBytesToRead = split.getLength() - split.getStart();
    objectPreProcessor = new HttpPacketEventProcessor();
}

From source file:com.netflix.aegisthus.input.readers.SSTableRecordReader.java

@SuppressWarnings("rawtypes")
@Override/* w w w  . j  av  a  2  s .co  m*/
public void initialize(InputSplit inputSplit, TaskAttemptContext ctx) throws IOException, InterruptedException {
    AegSplit split = (AegSplit) inputSplit;

    start = split.getStart();
    //TODO: This has a side effect of setting compressionmetadata. remove this.
    InputStream is = split.getInput(ctx.getConfiguration());
    if (split.isCompressed()) {
        end = split.getCompressionMetadata().getDataLength();
    } else {
        end = split.getEnd();
    }
    outputFile = ctx.getConfiguration().getBoolean("aegsithus.debug.file", false);
    filename = split.getPath().toUri().toString();

    LOG.info(String.format("File: %s", split.getPath().toUri().getPath()));
    LOG.info("Start: " + start);
    LOG.info("End: " + end);
    if (ctx instanceof TaskInputOutputContext) {
        context = (TaskInputOutputContext) ctx;
    }

    try {
        scanner = new SSTableScanner(new DataInputStream(is), split.getConvertors(), end,
                Descriptor.fromFilename(filename).version);
        if (ctx.getConfiguration().get("aegisthus.maxcolsize") != null) {
            scanner.setMaxColSize(ctx.getConfiguration().getLong("aegisthus.maxcolsize", -1L));
            LOG.info(String.format("aegisthus.maxcolsize - %d",
                    ctx.getConfiguration().getLong("aegisthus.maxcolsize", -1L)));
        }
        scanner.skipUnsafe(start);
        this.pos = start;
    } catch (IOException e) {
        throw new IOError(e);
    }
}

From source file:J2MEWriteReadMixedDataTypesExample.java

public void commandAction(Command command, Displayable displayable) {
    if (command == exit) {
        destroyApp(true);//www  .  ja va2s  . c  o  m
        notifyDestroyed();
    } else if (command == start) {
        try {
            recordstore = RecordStore.openRecordStore("myRecordStore", true);
            byte[] outputRecord;
            String outputString = "First Record";
            int outputInteger = 15;
            boolean outputBoolean = true;
            ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
            DataOutputStream outputDataStream = new DataOutputStream(outputStream);
            outputDataStream.writeUTF(outputString);
            outputDataStream.writeBoolean(outputBoolean);
            outputDataStream.writeInt(outputInteger);
            outputDataStream.flush();
            outputRecord = outputStream.toByteArray();
            recordstore.addRecord(outputRecord, 0, outputRecord.length);
            outputStream.reset();
            outputStream.close();
            outputDataStream.close();
            String inputString = null;
            int inputInteger = 0;
            boolean inputBoolean = false;
            byte[] byteInputData = new byte[100];
            ByteArrayInputStream inputStream = new ByteArrayInputStream(byteInputData);
            DataInputStream inputDataStream = new DataInputStream(inputStream);
            for (int x = 1; x <= recordstore.getNumRecords(); x++) {
                recordstore.getRecord(x, byteInputData, 0);
                inputString = inputDataStream.readUTF();
                inputBoolean = inputDataStream.readBoolean();
                inputInteger = inputDataStream.readInt();
                inputStream.reset();
            }
            inputStream.close();
            inputDataStream.close();
            alert = new Alert("Reading", inputString + " " + inputInteger + " " + inputBoolean, null,
                    AlertType.WARNING);
            alert.setTimeout(Alert.FOREVER);
            display.setCurrent(alert);
            recordstore.closeRecordStore();
            if (RecordStore.listRecordStores() != null) {
                RecordStore.deleteRecordStore("myRecordStore");
            }
        } catch (Exception error) {
            alert = new Alert("Error Removing", error.toString(), null, AlertType.WARNING);
            alert.setTimeout(Alert.FOREVER);
            display.setCurrent(alert);
        }
    }
}