Example usage for java.io DataOutput writeUTF

Introduction

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

Prototype

void writeUTF(String s) throws IOException;

Source Link

Document

Writes two bytes of length information to the output stream, followed by the modified UTF-8 representation of every character in the string s.

Usage

From source file:org.jactr.io.antlr3.serialization.Serializer.java

static public void write(CommonTree tree, DataOutput output) throws IOException {
    output.writeInt(tree.getType());//from w w  w.j  a v  a2s.  co  m
    output.writeUTF(tree.getText());

    // we ignore the token

    CommonToken token = (CommonToken) tree.getToken();
    output.writeInt(token.getType());
    output.writeUTF(token.getText());
    output.writeInt(token.getStartIndex());
    output.writeInt(token.getStopIndex());
    output.writeInt(token.getLine());
    output.writeInt(token.getCharPositionInLine());

    output.writeInt(tree.getTokenStartIndex());
    output.writeInt(tree.getTokenStopIndex());

    int start = -1;
    int end = -1;
    String url = "";
    if (tree instanceof DetailedCommonTree) {
        start = ((DetailedCommonTree) tree).getStartOffset();
        end = ((DetailedCommonTree) tree).getStopOffset();
        if (((DetailedCommonTree) tree).getSource() != null)
            url = ((DetailedCommonTree) tree).getSource().toString();
    }

    output.writeInt(start);
    output.writeInt(end);
    output.writeUTF(url);

    // children
    output.writeInt(tree.getChildCount());
    for (int i = 0; i < tree.getChildCount(); i++)
        write((CommonTree) tree.getChild(i), output);
}

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From source file:mobi.hsz.idea.gitignore.indexing.IgnoreEntryOccurrence.java

/**
 * Static helper to write given {@link IgnoreEntryOccurrence} to the output stream.
 *
 * @param out   output stream//from   www  . j  a  v a  2s  .  c  o  m
 * @param entry entry to write
 * @throws IOException I/O exception
 */
public static synchronized void serialize(@NotNull DataOutput out, @NotNull IgnoreEntryOccurrence entry)
        throws IOException {
    out.writeUTF(entry.getFile().getPath());
    out.writeInt(entry.items.size());
    for (Pair<Pattern, Boolean> item : entry.items) {
        out.writeUTF(item.first.pattern());
        out.writeBoolean(item.second);
    }
}

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From source file:uk.ac.gla.terrier.probos.Utils.java

public static void writeStringOrNull(DataOutput out, String s) throws IOException {
    if (s == null) {
        out.writeBoolean(false);/*ww w . j  ava  2  s. com*/
    } else {
        out.writeBoolean(true);
        out.writeUTF(s);
    }
}

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From source file:com.bigdata.dastor.utils.FBUtilities.java

public static void writeNullableString(String key, DataOutput dos) throws IOException {
    dos.writeBoolean(key == null);//from   w w w .ja v a  2  s .  c o m
    if (key != null) {
        dos.writeUTF(key);
    }
}

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From source file:com.linkedin.cubert.io.rubix.RubixFile.java

private static void extract(List<RubixFile<Tuple, Object>> rfiles, long blockId, int numBlocks, String output)
        throws IOException, ClassNotFoundException, InstantiationException, IllegalAccessException {
    Configuration conf = new JobConf();
    File outFile = new File(output);
    if (outFile.exists()) {
        outFile.delete();//from  w ww.  ja va 2 s  .c  o m
    }
    outFile.createNewFile();
    BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream(outFile));
    ByteArrayOutputStream keySectionStream = new ByteArrayOutputStream();
    DataOutput keySectionOut = new DataOutputStream(keySectionStream);
    SerializationFactory serializationFactory = new SerializationFactory(conf);
    RubixFile<Tuple, Object> lastrFile = null;
    JsonNode json;
    long totalLength = 0;

    final int BUF_SIZE = 32 * 1024;
    long blockIds[] = new long[numBlocks];
    int foundBlocks = 0;

    for (int i = 0; i < numBlocks; i++)
        blockIds[i] = blockId + i;

    for (int i = 0; i < numBlocks; i++) {
        boolean found = false;
        for (RubixFile<Tuple, Object> rfile : rfiles) {
            print.f("Checking %s", rfile.path.toString());
            List<KeyData<Tuple>> keyDataList = rfile.getKeyData();
            for (KeyData<Tuple> keyData : keyDataList) {
                if (keyData.getBlockId() == blockIds[i]) {
                    long offset = keyData.getOffset();
                    long length = keyData.getLength();
                    Tuple key = keyData.getKey();
                    print.f("Extracting block %d (off=%d len=%d) from %s", keyData.getBlockId(), offset, length,
                            rfile.path.toString());

                    // copy the data
                    if (length > 0) {
                        FileSystem fs = FileSystem.get(conf);
                        FSDataInputStream in = fs.open(rfile.path);
                        in.seek(offset);

                        byte[] data = new byte[BUF_SIZE];
                        long toRead = length;
                        while (toRead > 0) {
                            int thisRead = toRead > BUF_SIZE ? BUF_SIZE : (int) toRead;
                            in.readFully(data, 0, thisRead);
                            bos.write(data, 0, thisRead);
                            toRead -= thisRead;
                            System.out.print(".");
                        }
                        System.out.println();
                    }
                    // copy the key section
                    Serializer<Tuple> keySerializer = serializationFactory.getSerializer(rfile.getKeyClass());
                    keySerializer.open(keySectionStream);

                    keySerializer.serialize(key);
                    keySectionOut.writeLong(totalLength); // position
                    keySectionOut.writeLong(keyData.getBlockId());
                    keySectionOut.writeLong(keyData.getNumRecords());
                    foundBlocks++;
                    totalLength += length;
                    lastrFile = rfile;

                    found = true;
                    break;

                }
            }
            if (found) {
                break;
            }
        }
        if (!found)
            System.err.println("Cannot locate block with id " + blockIds[i]);
    }
    byte[] trailerBytes = keySectionStream.toByteArray();

    json = JsonUtils.cloneNode(lastrFile.metadataJson);
    ((ObjectNode) json).put("numberOfBlocks", foundBlocks);

    DataOutput out = new DataOutputStream(bos);
    out.writeUTF(json.toString());
    out.writeInt(trailerBytes.length);
    out.write(trailerBytes);
    out.writeLong(totalLength); // trailer start offset
    bos.close();
}

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From source file:com.chinamobile.bcbsp.ml.VectorWritable.java

public static void writeVector(DoubleVector vector, DataOutput out) throws IOException {
    if (vector == null) {
        LOG.info("lin test : VectorWritable write Vector is null");
    } else {/*ww w . j  a va2 s.c om*/
        LOG.info("lin test : VectorWritable write Vector is not null");
    }
    out.writeInt(vector.getLength());
    for (int i = 0; i < vector.getDimension(); i++) {
        out.writeDouble(vector.get(i));
    }

    if (vector.isNamed() && vector.getName() != null) {
        out.writeBoolean(true);
        out.writeUTF(vector.getName());
    } else {
        out.writeBoolean(false);
    }
}

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From source file:com.splicemachine.derby.impl.sql.execute.operations.SpliceBaseOperation.java

public static void writeNullableString(String value, DataOutput out) throws IOException {
    if (value != null) {
        out.writeBoolean(true);//from   ww w  .  j  a va 2  s.com
        out.writeUTF(value);
    } else {
        out.writeBoolean(false);
    }
}

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From source file:com.sirius.hadoop.job.onlinetime.StatusKey.java

@Override
public void write(DataOutput out) throws IOException {
    out.writeUTF(userId != null ? userId : StringUtils.EMPTY);
    out.writeLong(time);/*from  w  w  w .j  a  va2s  . com*/
}

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From source file:ph.fingra.hadoop.mapred.parts.performance.domain.AppNewuserHourKey.java

@Override
public void write(DataOutput out) throws IOException {

    out.writeUTF(this.appkey);
    out.writeUTF(this.token);
}

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From source file:ph.fingra.hadoop.mapred.parts.performance.domain.HourSessionKey.java

@Override
public void write(DataOutput out) throws IOException {

    out.writeUTF(this.appkey);
    out.writeUTF(this.session);
    out.writeUTF(this.localtime);
}

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