Example usage for java.io DataInput readDouble

Introduction

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

Prototype

double readDouble() throws IOException;

Source Link

Document

Reads eight input bytes and returns a double value.

Usage

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

protected static double read(DataInput in, double v) throws IOException {
    return in.readDouble();
}

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From source file:org.apache.sysml.runtime.matrix.data.MatrixBlock.java

private void readDenseBlock(DataInput in) throws IOException, DMLRuntimeException {
    allocateDenseBlock(true); //allocate block, clear nnz

    int limit = rlen * clen;

    if (in instanceof MatrixBlockDataInput) //fast deserialize
    {/*from w w w  . ja  v  a 2s .  c  o m*/
        MatrixBlockDataInput mbin = (MatrixBlockDataInput) in;
        nonZeros = mbin.readDoubleArray(limit, denseBlock);
    } else if (in instanceof DataInputBuffer && MRJobConfiguration.USE_BINARYBLOCK_SERIALIZATION) {
        //workaround because sequencefile.reader.next(key, value) does not yet support serialization framework
        DataInputBuffer din = (DataInputBuffer) in;
        MatrixBlockDataInput mbin = new FastBufferedDataInputStream(din);
        nonZeros = mbin.readDoubleArray(limit, denseBlock);
        ((FastBufferedDataInputStream) mbin).close();
    } else //default deserialize
    {
        for (int i = 0; i < limit; i++) {
            denseBlock[i] = in.readDouble();
            if (denseBlock[i] != 0)
                nonZeros++;
        }
    }
}

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From source file:org.apache.sysml.runtime.matrix.data.MatrixBlock.java

private void readSparseBlock(DataInput in) throws IOException {
    allocateSparseRowsBlock(false);/*ww w .  j  a  v a 2s .c o m*/
    resetSparse(); //reset all sparse rows

    if (in instanceof MatrixBlockDataInput) //fast deserialize
    {
        MatrixBlockDataInput mbin = (MatrixBlockDataInput) in;
        nonZeros = mbin.readSparseRows(rlen, sparseBlock);
    } else if (in instanceof DataInputBuffer && MRJobConfiguration.USE_BINARYBLOCK_SERIALIZATION) {
        //workaround because sequencefile.reader.next(key, value) does not yet support serialization framework
        DataInputBuffer din = (DataInputBuffer) in;
        MatrixBlockDataInput mbin = new FastBufferedDataInputStream(din);
        nonZeros = mbin.readSparseRows(rlen, sparseBlock);
        ((FastBufferedDataInputStream) mbin).close();
    } else //default deserialize
    {
        for (int r = 0; r < rlen; r++) {
            int rnnz = in.readInt(); //row nnz
            if (rnnz > 0) {
                sparseBlock.reset(r, rnnz, clen);
                for (int j = 0; j < rnnz; j++) //col index/value pairs
                    sparseBlock.append(r, in.readInt(), in.readDouble());
            }
        }
    }
}

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From source file:org.apache.sysml.runtime.matrix.data.MatrixBlock.java

private void readSparseToDense(DataInput in) throws IOException, DMLRuntimeException {
    allocateDenseBlock(false); //allocate block
    Arrays.fill(denseBlock, 0);/*from   w  ww. j a v  a2 s . c o  m*/

    for (int r = 0; r < rlen; r++) {
        int nr = in.readInt();
        for (int j = 0; j < nr; j++) {
            int c = in.readInt();
            double val = in.readDouble();
            denseBlock[r * clen + c] = val;
        }
    }
}

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From source file:org.apache.sysml.runtime.matrix.data.MatrixBlock.java

private void readUltraSparseBlock(DataInput in) throws IOException {
    allocateSparseRowsBlock(false); //adjust to size
    resetSparse(); //reset all sparse rows

    if (clen > 1) //ULTRA-SPARSE BLOCK
    {//w  w w  .ja  v a  2 s .c o  m
        //block: read ijv-triples
        for (long i = 0; i < nonZeros; i++) {
            int r = in.readInt();
            int c = in.readInt();
            double val = in.readDouble();
            sparseBlock.allocate(r, 1, clen);
            sparseBlock.append(r, c, val);
        }
    } else //ULTRA-SPARSE COL
    {
        //col: read iv-pairs (should never happen since always dense)
        for (long i = 0; i < nonZeros; i++) {
            int r = in.readInt();
            double val = in.readDouble();
            sparseBlock.allocate(r, 1, 1);
            sparseBlock.append(r, 0, val);
        }
    }
}

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From source file:org.apache.sysml.runtime.matrix.data.MatrixBlock.java

private void readUltraSparseToDense(DataInput in) throws IOException, DMLRuntimeException {
    allocateDenseBlock(false); //allocate block
    Arrays.fill(denseBlock, 0);//from w w w  .j  a v  a  2s. c  om

    if (clen > 1) //ULTRA-SPARSE BLOCK
    {
        //block: read ijv-triples
        for (long i = 0; i < nonZeros; i++) {
            int r = in.readInt();
            int c = in.readInt();
            double val = in.readDouble();
            denseBlock[r * clen + c] = val;
        }
    } else //ULTRA-SPARSE COL
    {
        //col: read iv-pairs
        for (long i = 0; i < nonZeros; i++) {
            int r = in.readInt();
            double val = in.readDouble();
            denseBlock[r] = val;
        }
    }
}

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

/** Read a {@link CWritable}, {@link String}, primitive type, or an array of
 * the preceding. *///from w  w  w.j a va 2s .  co  m
@SuppressWarnings("unchecked")
public static Object readObject(DataInput in, CObjectWritable objectWritable, CloudataConf conf,
        boolean arrayComponent, Class componentClass) throws IOException {
    String className;
    if (arrayComponent) {
        className = componentClass.getName();
    } else {
        className = CUTF8.readString(in);
        //SANGCHUL
        //   System.out.println("SANGCHUL] className:" + className);
    }

    Class<?> declaredClass = PRIMITIVE_NAMES.get(className);
    if (declaredClass == null) {
        try {
            declaredClass = conf.getClassByName(className);
        } catch (ClassNotFoundException e) {
            //SANGCHUL
            e.printStackTrace();
            throw new RuntimeException("readObject can't find class[className=" + className + "]", e);
        }
    }

    Object instance;

    if (declaredClass.isPrimitive()) { // primitive types

        if (declaredClass == Boolean.TYPE) { // boolean
            instance = Boolean.valueOf(in.readBoolean());
        } else if (declaredClass == Character.TYPE) { // char
            instance = Character.valueOf(in.readChar());
        } else if (declaredClass == Byte.TYPE) { // byte
            instance = Byte.valueOf(in.readByte());
        } else if (declaredClass == Short.TYPE) { // short
            instance = Short.valueOf(in.readShort());
        } else if (declaredClass == Integer.TYPE) { // int
            instance = Integer.valueOf(in.readInt());
        } else if (declaredClass == Long.TYPE) { // long
            instance = Long.valueOf(in.readLong());
        } else if (declaredClass == Float.TYPE) { // float
            instance = Float.valueOf(in.readFloat());
        } else if (declaredClass == Double.TYPE) { // double
            instance = Double.valueOf(in.readDouble());
        } else if (declaredClass == Void.TYPE) { // void
            instance = null;
        } else {
            throw new IllegalArgumentException("Not a primitive: " + declaredClass);
        }

    } else if (declaredClass.isArray()) { // array
        //System.out.println("SANGCHUL] is array");
        int length = in.readInt();
        //System.out.println("SANGCHUL] array length : " + length);
        //System.out.println("Read:in.readInt():" + length);
        if (declaredClass.getComponentType() == Byte.TYPE) {
            byte[] bytes = new byte[length];
            in.readFully(bytes);
            instance = bytes;
        } else if (declaredClass.getComponentType() == ColumnValue.class) {
            instance = readColumnValue(in, conf, declaredClass, length);
        } else {
            Class componentType = declaredClass.getComponentType();

            // SANGCHUL
            //System.out.println("SANGCHUL] componentType : " + componentType.getName());

            instance = Array.newInstance(componentType, length);
            for (int i = 0; i < length; i++) {
                Object arrayComponentInstance = readObject(in, null, conf, !componentType.isArray(),
                        componentType);
                Array.set(instance, i, arrayComponentInstance);
                //Array.set(instance, i, readObject(in, conf));
            }
        }
    } else if (declaredClass == String.class) { // String
        instance = CUTF8.readString(in);
    } else if (declaredClass.isEnum()) { // enum
        instance = Enum.valueOf((Class<? extends Enum>) declaredClass, CUTF8.readString(in));
    } else if (declaredClass == ColumnValue.class) {
        //ColumnValue?  ?? ?? ?  ? ?.
        //? ?   ? ? ? ? . 
        Class instanceClass = null;
        try {
            short typeDiff = in.readShort();
            if (typeDiff == TYPE_DIFF) {
                instanceClass = conf.getClassByName(CUTF8.readString(in));
            } else {
                instanceClass = declaredClass;
            }
        } catch (ClassNotFoundException e) {
            throw new RuntimeException("readObject can't find class", e);
        }
        ColumnValue columnValue = new ColumnValue();
        columnValue.readFields(in);
        instance = columnValue;
    } else { // Writable

        Class instanceClass = null;
        try {
            short typeDiff = in.readShort();
            // SANGCHUL
            //System.out.println("SANGCHUL] typeDiff : " + typeDiff);
            //System.out.println("Read:in.readShort():" + typeDiff);
            if (typeDiff == TYPE_DIFF) {
                // SANGCHUL
                String classNameTemp = CUTF8.readString(in);
                //System.out.println("SANGCHUL] typeDiff : " + classNameTemp);
                instanceClass = conf.getClassByName(classNameTemp);
                //System.out.println("Read:UTF8.readString(in):" + instanceClass.getClass());
            } else {
                instanceClass = declaredClass;
            }
        } catch (ClassNotFoundException e) {

            // SANGCHUL
            e.printStackTrace();
            throw new RuntimeException("readObject can't find class", e);
        }

        CWritable writable = CWritableFactories.newInstance(instanceClass, conf);
        writable.readFields(in);
        //System.out.println("Read:writable.readFields(in)");
        instance = writable;

        if (instanceClass == NullInstance.class) { // null
            declaredClass = ((NullInstance) instance).declaredClass;
            instance = null;
        }
    }

    if (objectWritable != null) { // store values
        objectWritable.declaredClass = declaredClass;
        objectWritable.instance = instance;
    }

    return instance;
}

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From source file:org.mitre.la.mapred.io.DenseVectorWritable.java

/**
 * Deserialize the fields of this object from <code>in</code>.
 *
 * @param in <code>DataInput</code> to deseriablize this object from.
 * @throws IOException/* w w w. j a v a2  s  .  c om*/
 */
@Override
public void readFields(DataInput in) throws IOException {
    in.readByte();
    String label = in.readUTF();
    int length = in.readInt();
    double[] v = new double[length];
    for (int i = 0; i < length; i++) {
        v[i] = in.readDouble();
    }
    this.dv = new DenseVector(label, v);
}

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