Example usage for java.io DataInput readLong

Introduction

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

Prototype

long readLong() throws IOException;

Source Link

Document

Reads eight input bytes and returns a long value.

Usage

From source file:org.apache.geode.internal.InternalDataSerializer.java

/** read a set of Long objects */
public static List<Long> readListOfLongs(DataInput in) throws IOException {
    int size = in.readInt();
    if (size < 0) {
        return null;
    } else {// www  .  j  av  a 2s . co m
        List result = new LinkedList();
        boolean longIDs = in.readBoolean();
        for (int i = 0; i < size; i++) {
            long l = longIDs ? in.readLong() : in.readInt();
            result.add(l);
        }
        return result;
    }
}

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From source file:org.apache.geode.internal.InternalDataSerializer.java

/**
 * Write a variable length long the old way (pre 7.0). Use this only in contexts where you might
 * need to communicate with pre 7.0 members or files.
 *///from   w w  w . j a v a 2  s  . c o m
public static long readVLOld(DataInput in) throws IOException {
    byte code = in.readByte();
    long result;
    if (code < 0) {
        // mask off sign bit
        result = code & 0x7F;
        result <<= 8;
        result |= in.readByte() & 0xFF;
    } else if (code <= MAX_BYTE_VL) {
        result = code;
    } else if (code == INT_VL) {
        result = in.readInt();
    } else if (code == LONG_VL) {
        result = in.readLong();
    } else {
        throw new IllegalStateException("unexpected variable length code=" + code);
    }
    return result;
}

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From source file:org.apache.hadoop.hbase.ccindex.TimeRangeFilter.java

public void readFields(final DataInput in) throws IOException {
    this.columnFamily = Bytes.readByteArray(in);
    if (this.columnFamily.length == 0) {
        this.columnFamily = null;
    }// w  ww.j  a v  a2 s  .c  o m
    this.columnQualifier = Bytes.readByteArray(in);
    if (this.columnQualifier.length == 0) {
        this.columnQualifier = null;
    }
    this.startTs = in.readLong();
    this.endTs = in.readLong();

    this.foundColumn = in.readBoolean();
    this.filterIfMissing = in.readBoolean();
    this.latestVersionOnly = in.readBoolean();
}

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From source file:org.apache.hadoop.hbase.coprocessor.GroupByStatsValues.java

@SuppressWarnings("unchecked")
@Override/*  w  ww. jav a 2 s  .co  m*/
public void readFields(DataInput in) throws IOException {
    count = in.readLong();
    missing = in.readLong();

    ObjectWritable ow = new ObjectWritable();
    ow.readFields(in);
    min = (T) ow.get();
    ow = new ObjectWritable();
    ow.readFields(in);
    max = (T) ow.get();
    ow = new ObjectWritable();
    ow.readFields(in);
    sum = (S) ow.get();
    ow = new ObjectWritable();
    ow.readFields(in);
    sumOfSquares = (S) ow.get();

    String ciClassName = WritableUtils.readString(in);
    try {
        ci = (ColumnInterpreter<T, S>) Class.forName(ciClassName).newInstance();
    } catch (Exception e) {
        throw new IOException(e);
    }
}

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From source file:org.apache.hadoop.hbase.hbql.filter.PageFilter.java

public void readFields(final DataInput in) throws IOException {
    Configuration conf = HBaseConfiguration.create();
    this.pageSize = in.readLong();
    this.verbose = in.readBoolean();
    this.filter = (Filter) HbaseObjectWritable.readObject(in, conf);
}

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From source file:org.apache.hadoop.hbase.HRegionInfo.java

/**
 * @deprecated Use protobuf deserialization instead.
 * @see #parseFrom(byte[])/*from   w  ww .  j a  va 2  s  .c  o  m*/
 */
@Deprecated
public void readFields(DataInput in) throws IOException {
    // Read the single version byte.  We don't ask the super class do it
    // because freaks out if its not the current classes' version.  This method
    // can deserialize version 0 and version 1 of HRI.
    byte version = in.readByte();
    if (version == 0) {
        // This is the old HRI that carried an HTD.  Migrate it.  The below
        // was copied from the old 0.90 HRI readFields.
        this.endKey = Bytes.readByteArray(in);
        this.offLine = in.readBoolean();
        this.regionId = in.readLong();
        this.regionName = Bytes.readByteArray(in);
        this.split = in.readBoolean();
        this.startKey = Bytes.readByteArray(in);
        try {
            HTableDescriptor htd = new HTableDescriptor();
            htd.readFields(in);
            this.tableName = htd.getTableName();
        } catch (EOFException eofe) {
            throw new IOException("HTD not found in input buffer", eofe);
        }
        this.hashCode = in.readInt();
    } else if (getVersion() == version) {
        this.endKey = Bytes.readByteArray(in);
        this.offLine = in.readBoolean();
        this.regionId = in.readLong();
        this.regionName = Bytes.readByteArray(in);
        this.split = in.readBoolean();
        this.startKey = Bytes.readByteArray(in);
        this.tableName = TableName.valueOf(Bytes.readByteArray(in));
        this.hashCode = in.readInt();
    } else {
        throw new IOException("Non-migratable/unknown version=" + getVersion());
    }
}

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From source file:org.apache.hadoop.hbase.HServerInfo.java

public void readFields(DataInput in) throws IOException {
    this.serverAddress.readFields(in);
    this.startCode = in.readLong();
    this.load.readFields(in);
    in.readInt();/*  w  w  w . j  a  v  a  2 s .c  om*/
    this.hostname = in.readUTF();
    if (sendSequenceIds) {
        HbaseMapWritable<byte[], Long> sequenceIdsWritable = new HbaseMapWritable<byte[], Long>(
                flushedSequenceIdByRegion);
        sequenceIdsWritable.readFields(in);
    }
}

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From source file:org.apache.hadoop.hbase.index.IndexSpecification.java

/**
 * @param Data Input Stream/* ww w  .  j av a2  s  .  c om*/
 * @throws IOException
 */
public void readFields(DataInput in) throws IOException {
    this.name = Bytes.readByteArray(in);
    try {
        HTableDescriptor.isLegalTableName(this.name);
    } catch (IllegalArgumentException e) {
        String msg = "Received unexpected data while parsing the column qualifiers :"
                + Bytes.toString(this.name) + ".";
        Log.warn(msg + " Could be an non-indexed table.");
        throw new EOFException(msg);
    }
    int indexColsSize = in.readInt();
    indexColumns.clear();
    for (int i = 0; i < indexColsSize; i++) {
        ColumnQualifier cq = new ColumnQualifier();
        // Need to revisit this place. May be some other valid value though invalid
        // comes up.
        try {
            cq.readFields(in);
        } catch (IllegalArgumentException e) {
            throw new EOFException("Received unexpected data while parsing the column qualifiers.");
        }
        internalAdd(cq);
    }
    this.maxVersions = in.readInt();
    this.ttl = in.readLong();
}

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

public void readFields(final DataInput in) throws IOException {
    // Clear any existing operations; may be hangovers from previous use of
    // this instance.
    if (this.operations.size() != 0) {
        this.operations.clear();
    }//ww w. j  a v a  2 s.c om
    this.row = Bytes.readByteArray(in);
    timestamp = in.readLong();
    this.size = in.readLong();
    int nOps = in.readInt();
    for (int i = 0; i < nOps; i++) {
        BatchOperation op = new BatchOperation();
        op.readFields(in);
        this.operations.add(op);
    }
    this.rowLock = in.readLong();
}

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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./*from w  ww  . j ava2 s .  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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