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.apache.hadoop.hbase.security.access.HbaseObjectWritableFor96Migration.java

/**
 * Read a {@link Writable}, {@link String}, primitive type, or an array of
 * the preceding.//from w ww.  j a  va2  s.co 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.hbase.security.access.TablePermission.java

@Override
public void readFields(DataInput in) throws IOException {
    super.readFields(in);
    byte[] tableBytes = Bytes.readByteArray(in);
    table = TableName.valueOf(tableBytes);
    if (in.readBoolean()) {
        family = Bytes.readByteArray(in);
    }/*from  w  w w  . ja  v a2 s  .  co m*/
    if (in.readBoolean()) {
        qualifier = Bytes.readByteArray(in);
    }
    if (in.readBoolean()) {
        namespace = Bytes.toString(Bytes.readByteArray(in));
    }
}

---

From source file:org.apache.hadoop.hdfs.protocol.LocatedBlocks.java

public void readFields(DataInput in) throws IOException {
    this.fileLength = in.readLong();
    underConstruction = in.readBoolean();
    // read located blocks
    int nrBlocks = in.readInt();
    this.blocks = new ArrayList<LocatedBlock>(nrBlocks);
    for (int idx = 0; idx < nrBlocks; idx++) {
        LocatedBlock blk = new LocatedBlock();
        blk.readFields(in);/*from  w ww  .j a v  a 2  s  .c om*/
        this.blocks.add(blk);
    }
}

---

From source file:org.apache.hadoop.hive.accumulo.AccumuloHiveRow.java

@Override
public void readFields(DataInput dataInput) throws IOException {
    if (dataInput.readBoolean()) {
        rowId = dataInput.readUTF();/*from www. j av a  2 s  .  c o  m*/
    }
    int size = dataInput.readInt();
    for (int i = 0; i < size; i++) {
        int cfLength = dataInput.readInt();
        byte[] cfData = new byte[cfLength];
        dataInput.readFully(cfData, 0, cfLength);
        Text cf = new Text(cfData);
        int cqLength = dataInput.readInt();
        byte[] cqData = new byte[cqLength];
        dataInput.readFully(cqData, 0, cqLength);
        Text cq = new Text(cqData);
        int valSize = dataInput.readInt();
        byte[] val = new byte[valSize];
        for (int j = 0; j < valSize; j++) {
            val[j] = dataInput.readByte();
        }
        tuples.add(new ColumnTuple(cf, cq, val));
    }
}

---

From source file:org.apache.hadoop.hive.llap.security.LlapTokenIdentifier.java

@Override
public void readFields(DataInput in) throws IOException {
    super.readFields(in);
    clusterId = in.readUTF();/*from   w  w  w. jav a  2 s.  c  om*/
    Preconditions.checkNotNull(clusterId);
    appId = in.readUTF();
    isSigningRequired = in.readBoolean();
    appId = appId == null ? "" : appId;
}

---

From source file:org.apache.hadoop.ipc.chinamobile.ConnectionHeader.java

@Override
public void readFields(DataInput in) throws IOException {
    protocol = Text.readString(in);
    if (protocol.isEmpty()) {
        protocol = null;/*from   w  w w . j av  a  2  s  . co m*/
    }

    boolean ugiPresent = in.readBoolean();
    if (ugiPresent) {
        ugi.readFields(in);
    } else {
        ugi = null;
    }
}

---

From source file:org.apache.hadoop.ipc.ConnectionHeader.java

@Override
public void readFields(DataInput in) throws IOException {
    protocol = Text.readString(in);
    if (protocol.isEmpty()) {
        protocol = null;//from ww  w  .j  a v  a  2s . c om
    }

    boolean ugiUsernamePresent = in.readBoolean();
    if (ugiUsernamePresent) {
        String username = in.readUTF();
        boolean realUserNamePresent = in.readBoolean();
        if (realUserNamePresent) {
            String realUserName = in.readUTF();
            UserGroupInformation realUserUgi = UserGroupInformation.createRemoteUser(realUserName);
            ugi = UserGroupInformation.createProxyUser(username, realUserUgi);
        } else {
            ugi = UserGroupInformation.createRemoteUser(username);
        }
    } else {
        ugi = null;
    }
}

---

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

public void readFields(DataInput in) throws IOException {
    boolean isMapTask = in.readBoolean();
    if (isMapTask) {
        task = new MapTask();
    } else {//w w w.  j ava 2 s. c om
        task = new ReduceTask();
    }

    task.readFields(in);
}

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

public void readFields(DataInput in) throws IOException {
    jobFile = Text.readString(in);
    taskId = TaskAttemptID.read(in);/* w  w  w  .ja v  a 2  s  .  c  o  m*/
    partition = in.readInt();
    numSlotsRequired = in.readInt();
    taskStatus.readFields(in);
    skipRanges.readFields(in);
    currentRecIndexIterator = skipRanges.skipRangeIterator();
    currentRecStartIndex = currentRecIndexIterator.next();
    skipping = in.readBoolean();
    jobCleanup = in.readBoolean();
    if (jobCleanup) {
        jobRunStateForCleanup = WritableUtils.readEnum(in, JobStatus.State.class);
    }
    jobSetup = in.readBoolean();
    writeSkipRecs = in.readBoolean();
    taskCleanup = in.readBoolean();
    if (taskCleanup) {
        setPhase(TaskStatus.Phase.CLEANUP);
    }
    user = Text.readString(in);
}

---

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);/*from   www .j  a va 2 s  . c  o  m*/
    }
    nextRecordRange.readFields(in);
}

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