Example usage for java.io DataInput readBoolean

Introduction

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

Prototype

boolean readBoolean() throws IOException;

Source Link

Document

Reads one input byte and returns true if that byte is nonzero, false if that byte is zero.

Usage

From source file:org.fastcatsearch.ir.document.DocumentWriter.java

public Document readDocument(int docNo) throws IOException, IRException {
    long prevPosPos = positionOutput.position();
    long docPos = -1;
    try {/*from   ww  w .  j  a  v a2 s  . c o m*/
        long positionOffset = ((long) docNo) * IOUtil.SIZE_OF_LONG;
        positionOutput.seek(positionOffset);
        docPos = IOUtil.readLong(positionOutput.getRaf());
    } finally {
        positionOutput.seek(prevPosPos);
    }

    // find a document block
    long prevDocPos = docOutput.position();
    try {
        docOutput.seek(docPos);
        RandomAccessFile raf = docOutput.getRaf();
        int len = IOUtil.readInt(raf);
        long n = raf.getFilePointer();
        InputStream docInput = Channels.newInputStream(docOutput.getRaf().getChannel().position(n));
        //2014-11-26 ?  working ?   ? ? GC ?? OOM ? ?.
        // Stream  .
        InflaterInputStream decompressInputStream = null;
        inflaterOutput.reset();
        int count = -1;
        try {
            BoundedInputStream boundedInputStream = new BoundedInputStream(docInput, len);
            boundedInputStream.setPropagateClose(false);// docInput  .
            decompressInputStream = new InflaterInputStream(boundedInputStream, new Inflater(), 512);
            while ((count = decompressInputStream.read(workingBuffer)) != -1) {
                inflaterOutput.write(workingBuffer, 0, count);
            }
        } finally {
            decompressInputStream.close();
        }
    } finally {
        docOutput.seek(prevDocPos);
    }

    BytesRef bytesRef = inflaterOutput.getBytesRef();
    DataInput bai = new BytesDataInput(bytesRef.bytes, 0, bytesRef.length);

    Document document = new Document(fields.size());
    for (int i = 0; i < fields.size(); i++) {
        FieldSetting fs = fields.get(i);
        Field f = null;
        boolean hasValue = bai.readBoolean();
        if (hasValue) {
            f = fs.createEmptyField();
            f.readRawFrom(bai);
        } else {
            f = fs.createEmptyField();
        }
        if (f != null) {
            String multiValueDelimiter = fs.getMultiValueDelimiter();
            try {
                f.parseIndexable(multiValueDelimiter);
            } catch (FieldDataParseException e) {
                throw new IOException(e);
            }
        }
        document.add(f);
    }
    document.setDocId(docNo);
    return document;
}

From source file:org.lilyproject.repository.impl.hbase.LilyFieldSingleColumnValueFilter.java

public void readFields(final DataInput in) throws IOException {
    this.columnFamily = Bytes.readByteArray(in);
    if (this.columnFamily.length == 0) {
        this.columnFamily = null;
    }//from  ww w  .j  a  v  a2 s .c  om
    this.columnQualifier = Bytes.readByteArray(in);
    if (this.columnQualifier.length == 0) {
        this.columnQualifier = null;
    }
    this.compareOp = CompareFilter.CompareOp.valueOf(in.readUTF());
    this.comparator = (WritableByteArrayComparable) HbaseObjectWritable.readObject(in, null);
    this.foundColumn = in.readBoolean();
    this.matchedColumn = in.readBoolean();
    this.filterIfMissing = in.readBoolean();
    this.latestVersionOnly = in.readBoolean();
}

From source file:parquet.hadoop.ParquetInputSplit.java

private BlockMetaData readBlock(DataInput in) throws IOException {
    final BlockMetaData block = new BlockMetaData();
    int size = in.readInt();
    for (int i = 0; i < size; i++) {
        block.addColumn(readColumn(in));
    }/*  www  .ja  va  2 s. co m*/
    block.setRowCount(in.readLong());
    block.setTotalByteSize(in.readLong());
    if (!in.readBoolean()) {
        block.setPath(in.readUTF().intern());
    }
    return block;
}

From source file:PFPGrowth_in_SPARK.TransactionTree.java

public void readFields(DataInput in) throws IOException {
    representedAsList = in.readBoolean();

    VIntWritable vInt = new VIntWritable();
    VLongWritable vLong = new VLongWritable();

    if (representedAsList) {
        transactionSet = Lists.newArrayList();
        vInt.readFields(in);//from   w  w  w .j av a 2s  . c om
        int numTransactions = vInt.get();
        for (int i = 0; i < numTransactions; i++) {
            vLong.readFields(in);
            Long support = vLong.get();

            vInt.readFields(in);
            int length = vInt.get();

            int[] items = new int[length];
            for (int j = 0; j < length; j++) {
                vInt.readFields(in);
                items[j] = vInt.get();
            }
            Pair<IntArrayList, Long> transaction = new Pair<IntArrayList, Long>(new IntArrayList(items),
                    support);
            transactionSet.add(transaction);
        }
    } else {
        vInt.readFields(in);
        nodes = vInt.get();
        attribute = new int[nodes];
        nodeCount = new long[nodes];
        childCount = new int[nodes];
        nodeChildren = new int[nodes][];
        for (int i = 0; i < nodes; i++) {
            vInt.readFields(in);
            attribute[i] = vInt.get();
            vLong.readFields(in);
            nodeCount[i] = vLong.get();
            vInt.readFields(in);
            int childCountI = vInt.get();
            childCount[i] = childCountI;
            nodeChildren[i] = new int[childCountI];
            for (int j = 0; j < childCountI; j++) {
                vInt.readFields(in);
                nodeChildren[i][j] = vInt.get();
            }
        }
    }
}

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

public static String readStringOrNull(DataInput in) throws IOException {
    if (!in.readBoolean())
        return null;
    return in.readUTF();
}