Example usage for java.io DataInput readUnsignedShort

Introduction

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

Prototype

int readUnsignedShort() throws IOException;

Source Link

Document

Reads two input bytes and returns an int value in the range 0 through 65535 .

Usage

From source file:org.apache.pig.data.BinInterSedes.java

private Tuple readSchemaTuple(DataInput in, byte type) throws IOException {
    int id;/* w  ww .j a  v a  2 s . com*/
    switch (type) {
    case (SCHEMA_TUPLE_BYTE_INDEX):
        id = in.readUnsignedByte();
        break;
    case (SCHEMA_TUPLE_SHORT_INDEX):
        id = in.readUnsignedShort();
        break;
    case (SCHEMA_TUPLE):
        id = in.readInt();
        break;
    default:
        throw new RuntimeException("Invalid type given to readSchemaTuple: " + type);
    }

    Tuple st = SchemaTupleFactory.getInstance(id).newTuple();
    st.readFields(in);

    return st;
}

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From source file:org.apache.pig.data.BinInterSedes.java

public int getTupleSize(DataInput in, byte type) throws IOException {
    int sz;//ww  w. j  a  v a 2 s .c  o m
    switch (type) {
    case TUPLE_0:
        return 0;
    case TUPLE_1:
        return 1;
    case TUPLE_2:
        return 2;
    case TUPLE_3:
        return 3;
    case TUPLE_4:
        return 4;
    case TUPLE_5:
        return 5;
    case TUPLE_6:
        return 6;
    case TUPLE_7:
        return 7;
    case TUPLE_8:
        return 8;
    case TUPLE_9:
        return 9;
    case TINYTUPLE:
        sz = in.readUnsignedByte();
        break;
    case SMALLTUPLE:
        sz = in.readUnsignedShort();
        break;
    case TUPLE:
        sz = in.readInt();
        break;
    default: {
        int errCode = 2112;
        String msg = "Unexpected datatype " + type + " while reading tuple" + "from binary file.";
        throw new ExecException(msg, errCode, PigException.BUG);
    }
    }
    // if sz == 0, we construct an "empty" tuple - presumably the writer wrote an empty tuple!
    if (sz < 0) {
        throw new IOException("Invalid size " + sz + " for a tuple");
    }
    return sz;
}

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From source file:org.apache.pig.data.BinInterSedes.java

private DataBag readBag(DataInput in, byte type) throws IOException {
    DataBag bag = mBagFactory.newDefaultBag();
    long size;// w w  w .jav  a  2  s.  c  o  m
    // determine size of bag
    switch (type) {
    case TINYBAG:
        size = in.readUnsignedByte();
        break;
    case SMALLBAG:
        size = in.readUnsignedShort();
        break;
    case BAG:
        size = in.readLong();
        break;
    default:
        int errCode = 2219;
        String msg = "Unexpected data while reading bag " + "from binary file.";
        throw new ExecException(msg, errCode, PigException.BUG);
    }

    for (long i = 0; i < size; i++) {
        try {
            Object o = readDatum(in);
            bag.add((Tuple) o);
        } catch (ExecException ee) {
            throw ee;
        }
    }
    return bag;
}

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From source file:org.apache.pig.data.BinInterSedes.java

private Map<String, Object> readMap(DataInput in, byte type) throws IOException {
    int size;/*w  w  w .j av a2s  .  c  o m*/
    switch (type) {
    case TINYMAP:
        size = in.readUnsignedByte();
        break;
    case SMALLMAP:
        size = in.readUnsignedShort();
        break;
    case MAP:
        size = in.readInt();
        break;
    default: {
        int errCode = 2220;
        String msg = "Unexpected data while reading map" + "from binary file.";
        throw new ExecException(msg, errCode, PigException.BUG);
    }
    }
    Map<String, Object> m = new HashMap<String, Object>(size);
    for (int i = 0; i < size; i++) {
        String key = (String) readDatum(in);
        m.put(key, readDatum(in));
    }
    return m;
}

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From source file:org.apache.pig.data.DataReaderWriter.java

public static String bytesToCharArray(DataInput in) throws IOException {
    int size = in.readUnsignedShort();
    byte[] ba = new byte[size];
    in.readFully(ba);/*w  w w. j  a  va2 s .co m*/
    return new String(ba, DataReaderWriter.UTF8);
}

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From source file:org.cloudata.core.common.io.CUTF8.java

/** Skips over one UTF8 in the input. */
public static void skip(DataInput in) throws IOException {
    int length = in.readUnsignedShort();
    CWritableUtils.skipFully(in, length);
}

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From source file:org.netbeans.nbbuild.VerifyClassLinkageForIISI.java

public static Set<String> dependencies(byte[] data) throws IOException {
    Set<String> result = new TreeSet<String>();
    DataInput input = new DataInputStream(new ByteArrayInputStream(data));
    skip(input, 8); // magic, minor_version, major_version
    int size = input.readUnsignedShort() - 1; // constantPoolCount
    String[] utf8Strings = new String[size];
    boolean[] isClassName = new boolean[size];
    boolean[] isDescriptor = new boolean[size];
    for (int i = 0; i < size; i++) {
        byte tag = input.readByte();
        switch (tag) {
        case 1: // CONSTANT_Utf8
            utf8Strings[i] = input.readUTF();
            break;
        case 7: // CONSTANT_Class
            int index = input.readUnsignedShort() - 1;
            if (index >= size) {
                throw new IOException("@" + i + ": CONSTANT_Class_info.name_index " + index
                        + " too big for size of pool " + size);
            }/*from w  ww . j  av a2s.  c  o m*/
            //log("Class reference at " + index, Project.MSG_DEBUG);
            isClassName[index] = true;
            break;
        case 3: // CONSTANT_Integer
        case 4: // CONSTANT_Float
        case 9: // CONSTANT_Fieldref
        case 10: // CONSTANT_Methodref
        case 11: // CONSTANT_InterfaceMethodref
            skip(input, 4);
            break;
        case 12: // CONSTANT_NameAndType
            skip(input, 2);
            index = input.readUnsignedShort() - 1;
            if (index >= size || index < 0) {
                throw new IOException("@" + i + ": CONSTANT_NameAndType_info.descriptor_index " + index
                        + " too big for size of pool " + size);
            }
            isDescriptor[index] = true;
            break;
        case 8: // CONSTANT_String
            skip(input, 2);
            break;
        case 5: // CONSTANT_Long
        case 6: // CONSTANT_Double
            skip(input, 8);
            i++; // weirdness in spec
            break;
        default:
            throw new IOException("Unrecognized constant pool tag " + tag + " at index " + i
                    + "; running UTF-8 strings: " + Arrays.asList(utf8Strings));
        }
    }
    //task.log("UTF-8 strings: " + Arrays.asList(utf8Strings), Project.MSG_DEBUG);
    for (int i = 0; i < size; i++) {
        String s = utf8Strings[i];
        final Set<String> classNameSet = extractClassName(s);

        if (s != null) {
            if (CollectionUtils.isNotEmpty(classNameSet)) {
                result.addAll(classNameSet);
            }

        }

    }
    return result;
}

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