Example usage for java.io DataInput readFloat

Introduction

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

Prototype

float readFloat() throws IOException;

Source Link

Document

Reads four input bytes and returns a float value.

Usage

From source file:com.martinkampjensen.thesis.util.gromacs.EnergyExtractor.java

private static double readReal(DataInput input, boolean useDoublePrecision) throws IOException {
    if (useDoublePrecision) {
        return input.readDouble();
    } else {/*from  w ww. j a va 2  s . com*/
        return input.readFloat();
    }
}

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From source file:hivemall.fm.FFMPredictionModel.java

@Nonnull
private static void readEntry(@Nonnull final DataInput in, final int factors, @Nonnull final float[] Vf,
        @Nonnull Entry dst) throws IOException {
    final byte type = in.readByte();
    switch (type) {
    case HALF_FLOAT_ENTRY: {
        float W = HalfFloat.halfFloatToFloat(in.readShort());
        dst.setW(W);// w ww. java2s . c  o  m
        for (int i = 0; i < factors; i++) {
            Vf[i] = HalfFloat.halfFloatToFloat(in.readShort());
        }
        dst.setV(Vf);
        break;
    }
    case W_ONLY_HALF_FLOAT_ENTRY: {
        float W = HalfFloat.halfFloatToFloat(in.readShort());
        dst.setW(W);
        break;
    }
    case FLOAT_ENTRY: {
        float W = in.readFloat();
        dst.setW(W);
        IOUtils.readFloats(in, Vf);
        dst.setV(Vf);
        break;
    }
    case W_ONLY_FLOAT_ENTRY: {
        float W = in.readFloat();
        dst.setW(W);
        break;
    }
    default:
        throw new IOException("Unexpected Entry type: " + type);
    }
}

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From source file:com.chinamobile.bcbsp.examples.bytearray.pagerank.PRVertexLiteNew.java

@Override
public void readFields(DataInput in) throws IOException {
    this.vertexID = in.readInt();
    this.vertexValue = in.readFloat();
}

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From source file:edu.nyu.vida.data_polygamy.scalar_function.Median.java

@Override
public void readFields(DataInput in) throws IOException {
    count = in.readInt();//from  www .  j  a va 2 s .c o  m
    int size = in.readInt();
    floatValues = new ArrayList<Float>(size);
    for (int i = 0; i < size; i++)
        floatValues.add(in.readFloat());
}

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From source file:com.chinamobile.bcbsp.sync.SuperStepReportContainer.java

@Override
public void readFields(DataInput in) throws IOException {
    this.partitionId = in.readInt();
    this.stageFlag = in.readInt();
    int count = in.readInt();
    this.dirFlag = new String[count];
    for (int i = 0; i < count; i++) {
        this.dirFlag[i] = Text.readString(in);
    }//from   w  ww.j a  v  a  2  s . c  om
    this.judgeFlag = in.readLong();
    this.localBarrierNum = in.readInt();
    this.port1 = in.readInt();
    this.port2 = in.readInt();
    count = in.readInt();
    this.aggValues = new String[count];
    for (int i = 0; i < count; i++) {
        this.aggValues[i] = Text.readString(in);
    }
    this.staffRunTime = in.readLong();
    this.sid = in.readInt();
    this.currentSuperStep = in.readInt();
    this.migrateCost = in.readLong();
    this.splitEdgefactor = in.readFloat();
}

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From source file:dk.statsbiblioteket.util.LineReaderTest.java

public void testSample(String type, DataInput in) throws Exception {
    assertEquals("Int 1 should work for " + type, 12345, in.readInt());
    assertEquals("Int 2 should work for " + type, -87, in.readInt());
    assertEquals("Long should work for " + type, 123456789L, in.readLong());
    assertEquals("String 1 should work for " + type, "Hello World!", in.readLine());
    assertEquals("String 2 should work for " + type, "Another world", in.readLine());
    assertEquals("Float should work for " + type, 0.5f, in.readFloat());
    assertEquals("Boolean 1 should work for " + type, true, in.readBoolean());
    assertEquals("Boolean 2 should work for " + type, false, in.readBoolean());
    assertEquals("Byte 1 should work for " + type, (byte) 12, in.readByte());
    assertEquals("Byte 2 should work for " + type, (byte) -12, in.readByte());
    assertEquals("Unsigned byte should work for " + type, 129, in.readUnsignedByte());
    assertEquals("Short should work for " + type, -4567, in.readShort());
    byte[] loaded = new byte[5];
    byte[] expected = new byte[] { (byte) 'A', (byte) 'S', (byte) 'C', (byte) 'I', (byte) 'I' };
    in.readFully(loaded);//from   w w  w.  j ava  2 s .  co m
    for (int i = 0; i < loaded.length; i++) {
        assertEquals("Byte-stored string should be equal at byte " + i + " for " + type, expected[i],
                loaded[i]);
    }
}

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From source file:org.apache.hadoop.hbase.io.HbaseObjectWritable.java

/**
 * Read a {@link Writable}, {@link String}, primitive type, or an array of
 * the preceding.//w w w  .  j  a  v a2s  .  c  o  m
 * @param in
 * @param objectWritable
 * @param conf
 * @return the object
 * @throws IOException
 */
@SuppressWarnings("unchecked")
public static Object readObject(DataInput in, HbaseObjectWritable objectWritable, Configuration conf)
        throws IOException {
    Class<?> declaredClass = CODE_TO_CLASS.get(WritableUtils.readVInt(in));
    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
        if (declaredClass.equals(byte[].class)) {
            instance = Bytes.readByteArray(in);
        } else if (declaredClass.equals(Result[].class)) {
            instance = Result.readArray(in);
        } else {
            int length = in.readInt();
            instance = Array.newInstance(declaredClass.getComponentType(), length);
            for (int i = 0; i < length; i++) {
                Array.set(instance, i, readObject(in, conf));
            }
        }
    } else if (declaredClass.equals(Array.class)) { //an array not declared in CLASS_TO_CODE
        Class<?> componentType = readClass(conf, in);
        int length = in.readInt();
        instance = Array.newInstance(componentType, length);
        for (int i = 0; i < length; i++) {
            Array.set(instance, i, readObject(in, conf));
        }
    } else if (List.class.isAssignableFrom(declaredClass)) { // List
        int length = in.readInt();
        instance = new ArrayList(length);
        for (int i = 0; i < length; i++) {
            ((ArrayList) instance).add(readObject(in, conf));
        }
    } else if (declaredClass == String.class) { // String
        instance = Text.readString(in);
    } else if (declaredClass.isEnum()) { // enum
        instance = Enum.valueOf((Class<? extends Enum>) declaredClass, Text.readString(in));
    } else if (declaredClass == Message.class) {
        String className = Text.readString(in);
        try {
            declaredClass = getClassByName(conf, className);
            instance = tryInstantiateProtobuf(declaredClass, in);
        } catch (ClassNotFoundException e) {
            LOG.error("Can't find class " + className, e);
            throw new IOException("Can't find class " + className, e);
        }
    } else { // Writable or Serializable
        Class instanceClass = null;
        int b = (byte) WritableUtils.readVInt(in);
        if (b == NOT_ENCODED) {
            String className = Text.readString(in);
            try {
                instanceClass = getClassByName(conf, className);
            } catch (ClassNotFoundException e) {
                LOG.error("Can't find class " + className, e);
                throw new IOException("Can't find class " + className, e);
            }
        } else {
            instanceClass = CODE_TO_CLASS.get(b);
        }
        if (Writable.class.isAssignableFrom(instanceClass)) {
            Writable writable = WritableFactories.newInstance(instanceClass, conf);
            try {
                writable.readFields(in);
            } catch (Exception e) {
                LOG.error("Error in readFields", e);
                throw new IOException("Error in readFields", e);
            }
            instance = writable;
            if (instanceClass == NullInstance.class) { // null
                declaredClass = ((NullInstance) instance).declaredClass;
                instance = null;
            }
        } else {
            int length = in.readInt();
            byte[] objectBytes = new byte[length];
            in.readFully(objectBytes);
            ByteArrayInputStream bis = null;
            ObjectInputStream ois = null;
            try {
                bis = new ByteArrayInputStream(objectBytes);
                ois = new ObjectInputStream(bis);
                instance = ois.readObject();
            } catch (ClassNotFoundException e) {
                LOG.error("Class not found when attempting to deserialize object", e);
                throw new IOException("Class not found when attempting to " + "deserialize object", e);
            } finally {
                if (bis != null)
                    bis.close();
                if (ois != null)
                    ois.close();
            }
        }
    }
    if (objectWritable != null) { // store values
        objectWritable.declaredClass = declaredClass;
        objectWritable.instance = instance;
    }
    return instance;
}

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From source file:org.apache.hadoop.hbase.security.access.HbaseObjectWritableFor96Migration.java

/**
 * Read a {@link Writable}, {@link String}, primitive type, or an array of
 * the preceding./*from   w ww  .ja  va2s.c  o m*/
 * @param in
 * @param objectWritable
 * @param conf
 * @return the object
 * @throws IOException
 */
@SuppressWarnings("unchecked")
static Object readObject(DataInput in, HbaseObjectWritableFor96Migration objectWritable, Configuration conf)
        throws IOException {
    Class<?> declaredClass = CODE_TO_CLASS.get(WritableUtils.readVInt(in));
    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
        if (declaredClass.equals(byte[].class)) {
            instance = Bytes.readByteArray(in);
        } else {
            int length = in.readInt();
            instance = Array.newInstance(declaredClass.getComponentType(), length);
            for (int i = 0; i < length; i++) {
                Array.set(instance, i, readObject(in, conf));
            }
        }
    } else if (declaredClass.equals(Array.class)) { //an array not declared in CLASS_TO_CODE
        Class<?> componentType = readClass(conf, in);
        int length = in.readInt();
        instance = Array.newInstance(componentType, length);
        for (int i = 0; i < length; i++) {
            Array.set(instance, i, readObject(in, conf));
        }
    } else if (List.class.isAssignableFrom(declaredClass)) { // List
        int length = in.readInt();
        instance = new ArrayList(length);
        for (int i = 0; i < length; i++) {
            ((ArrayList) instance).add(readObject(in, conf));
        }
    } else if (declaredClass == String.class) { // String
        instance = Text.readString(in);
    } else if (declaredClass.isEnum()) { // enum
        instance = Enum.valueOf((Class<? extends Enum>) declaredClass, Text.readString(in));
    } else if (declaredClass == Message.class) {
        String className = Text.readString(in);
        try {
            declaredClass = getClassByName(conf, className);
            instance = tryInstantiateProtobuf(declaredClass, in);
        } catch (ClassNotFoundException e) {
            LOG.error("Can't find class " + className, e);
            throw new IOException("Can't find class " + className, e);
        }
    } else if (Scan.class.isAssignableFrom(declaredClass)) {
        int length = in.readInt();
        byte[] scanBytes = new byte[length];
        in.readFully(scanBytes);
        ClientProtos.Scan.Builder scanProto = ClientProtos.Scan.newBuilder();
        instance = ProtobufUtil.toScan(scanProto.mergeFrom(scanBytes).build());
    } else { // Writable or Serializable
        Class instanceClass = null;
        int b = (byte) WritableUtils.readVInt(in);
        if (b == NOT_ENCODED) {
            String className = Text.readString(in);
            try {
                instanceClass = getClassByName(conf, className);
            } catch (ClassNotFoundException e) {
                LOG.error("Can't find class " + className, e);
                throw new IOException("Can't find class " + className, e);
            }
        } else {
            instanceClass = CODE_TO_CLASS.get(b);
        }
        if (Writable.class.isAssignableFrom(instanceClass)) {
            Writable writable = WritableFactories.newInstance(instanceClass, conf);
            try {
                writable.readFields(in);
            } catch (Exception e) {
                LOG.error("Error in readFields", e);
                throw new IOException("Error in readFields", e);
            }
            instance = writable;
            if (instanceClass == NullInstance.class) { // null
                declaredClass = ((NullInstance) instance).declaredClass;
                instance = null;
            }
        } else {
            int length = in.readInt();
            byte[] objectBytes = new byte[length];
            in.readFully(objectBytes);
            ByteArrayInputStream bis = null;
            ObjectInputStream ois = null;
            try {
                bis = new ByteArrayInputStream(objectBytes);
                ois = new ObjectInputStream(bis);
                instance = ois.readObject();
            } catch (ClassNotFoundException e) {
                LOG.error("Class not found when attempting to deserialize object", e);
                throw new IOException("Class not found when attempting to " + "deserialize object", e);
            } finally {
                if (bis != null)
                    bis.close();
                if (ois != null)
                    ois.close();
            }
        }
    }
    if (objectWritable != null) { // store values
        objectWritable.declaredClass = declaredClass;
        objectWritable.instance = instance;
    }
    return instance;
}

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From source file:org.apache.hadoop.mapred.TaskStatus.java

public void readFields(DataInput in) throws IOException {
    this.taskid.readFields(in);
    this.progress = in.readFloat();
    this.numSlots = in.readInt();
    this.runState = WritableUtils.readEnum(in, State.class);
    this.diagnosticInfo = Text.readString(in);
    this.stateString = Text.readString(in);
    this.phase = WritableUtils.readEnum(in, Phase.class);
    this.startTime = in.readLong();
    this.finishTime = in.readLong();
    counters = new Counters();
    this.includeCounters = in.readBoolean();
    this.outputSize = in.readLong();
    if (includeCounters) {
        counters.readFields(in);/* w  w w.  j a v a2  s. co m*/
    }
    nextRecordRange.readFields(in);
}

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From source file:org.apache.hama.bsp.TaskStatus.java

@Override
public void readFields(DataInput in) throws IOException {
    this.jobId.readFields(in);
    this.taskId.readFields(in);
    this.progress = in.readFloat();
    this.runState = WritableUtils.readEnum(in, State.class);
    this.stateString = Text.readString(in);
    this.phase = WritableUtils.readEnum(in, Phase.class);
    this.startTime = in.readLong();
    this.finishTime = in.readLong();

    counters = new Counters();
    this.counters.readFields(in);
}

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