Example usage for java.io DataInput readInt

Introduction

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

Prototype

int readInt() throws IOException;

Source Link

Document

Reads four input bytes and returns an int value.

Usage

From source file:com.bigdata.dastor.utils.FBUtilities.java

public static void deserialize(TDeserializer deserializer, TBase struct, DataInput in) throws IOException {
    assert deserializer != null;
    assert struct != null;
    assert in != null;
    byte[] bytes = new byte[in.readInt()];
    in.readFully(bytes);/*from w  w  w  .j  av  a  2s. com*/
    try {
        deserializer.deserialize(struct, bytes);
    } catch (TException ex) {
        throw new IOException(ex);
    }
}

---

From source file:mobi.hsz.idea.gitignore.indexing.IgnoreEntryOccurrence.java

/**
 * Static helper to read {@link IgnoreEntryOccurrence} from the input stream.
 *
 * @param in input stream//from  w w w . ja v  a2 s .  c o m
 * @return read {@link IgnoreEntryOccurrence}
 */
@Nullable
public static synchronized IgnoreEntryOccurrence deserialize(@NotNull DataInput in) {
    try {
        String path = in.readUTF();
        if (StringUtils.isEmpty(path)) {
            return null;
        }
        VirtualFile file = LocalFileSystem.getInstance().findFileByPath(path);
        if (file == null || !file.exists() || file.isDirectory()) {
            return null;
        }

        IgnoreEntryOccurrence entry = new IgnoreEntryOccurrence(file);
        int size = in.readInt();
        for (int i = 0; i < size; i++) {
            Pattern pattern = Pattern.compile(in.readUTF());
            Boolean isNegated = in.readBoolean();
            entry.add(pattern, isNegated);
        }
        return entry;
    } catch (IOException e) {
        return null;
    }
}

---

From source file:com.aliyun.odps.io.TupleReaderWriter.java

/**
 * ????Tuple// w  w w  .  ja va2s . c om
 *
 * @param in
 *     ??Tuplefield
 * @param t
 *     ????Tuple
 * @throws IOException
 *     ???Tuple??
 */
public static void readTuple(DataInput in, Tuple t) throws IOException {
    // Make sure it's a tuple.
    byte b = in.readByte();
    if (b != TUPLE) {
        String msg = "Unexpected data while reading tuple from binary file.";
        throw new IOException(msg);
    }

    // Read the number of fields
    int sz = in.readInt();
    for (int i = 0; i < sz; i++) {
        byte type = in.readByte();
        t.append(readDatum(in, type));
    }
}

---

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

public static Object readDatum(DataInput in, byte type) throws IOException, ExecException {
    switch (type) {
    case DataType.TUPLE:
        return bytesToTuple(in);

    case DataType.BAG:
        return bytesToBag(in);

    case DataType.MAP:
        return bytesToMap(in);

    case DataType.INTERNALMAP:
        return bytesToInternalMap(in);

    case DataType.INTEGER:
        return Integer.valueOf(in.readInt());

    case DataType.LONG:
        return Long.valueOf(in.readLong());

    case DataType.FLOAT:
        return Float.valueOf(in.readFloat());

    case DataType.DOUBLE:
        return Double.valueOf(in.readDouble());

    case DataType.BOOLEAN:
        return Boolean.valueOf(in.readBoolean());

    case DataType.BYTE:
        return Byte.valueOf(in.readByte());

    case DataType.BYTEARRAY: {
        int size = in.readInt();
        byte[] ba = new byte[size];
        in.readFully(ba);/*from  w  w  w.ja v  a  2  s . co  m*/
        return new DataByteArray(ba);
    }

    case DataType.BIGCHARARRAY:
        return bytesToBigCharArray(in);

    case DataType.CHARARRAY:
        return bytesToCharArray(in);

    case DataType.GENERIC_WRITABLECOMPARABLE:
        return bytesToWritable(in);

    case DataType.NULL:
        return null;

    default:
        throw new RuntimeException("Unexpected data type " + type + " found in stream.");
    }
}

---

From source file:org.apache.hadoop.hdfs.server.namenode.IngestLocal.java

static private DatanodeDescriptor[] readDatanodeDescriptorArray(DataInput in) throws IOException {
    DatanodeDescriptor[] locations = new DatanodeDescriptor[in.readInt()];
    for (int i = 0; i < locations.length; i++) {
        locations[i] = new DatanodeDescriptor();
        locations[i].readFieldsFromFSEditLog(in);
    }//from  www .  j  a v a 2 s  .c  o  m
    return locations;
}

---

From source file:com.krawler.common.util.ByteUtil.java

public static String readUTF8(DataInput in) throws IOException {
    int len = in.readInt();
    if (len > MAX_STRING_LEN) {
        throw new IOException(
                "String length " + len + " is too long in ByteUtil.writeUTF8(); max=" + MAX_STRING_LEN);
    } else if (len > 0) {
        byte[] buf = new byte[len];
        in.readFully(buf, 0, len);/*from  w w  w  .j a  v  a  2  s .c  om*/
        return new String(buf, "UTF-8");
    } else if (len == 0) {
        return "";
    } else if (len == -1) {
        return null;
    } else {
        throw new IOException("Invalid length " + len + " in ByteUtil.readUTF8()");
    }
}

---

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

/**
 * Reads a set of permissions as {@link org.apache.hadoop.io.Writable} instances
 * from the input stream.//from w  ww.  j ava  2  s  . c om
 */
public static ListMultimap<String, TablePermission> readPermissions(byte[] data, Configuration conf)
        throws DeserializationException {
    if (ProtobufUtil.isPBMagicPrefix(data)) {
        int pblen = ProtobufUtil.lengthOfPBMagic();
        try {
            AccessControlProtos.UsersAndPermissions perms = AccessControlProtos.UsersAndPermissions.newBuilder()
                    .mergeFrom(data, pblen, data.length - pblen).build();
            return ProtobufUtil.toUserTablePermissions(perms);
        } catch (InvalidProtocolBufferException e) {
            throw new DeserializationException(e);
        }
    } else {
        ListMultimap<String, TablePermission> perms = ArrayListMultimap.create();
        try {
            DataInput in = new DataInputStream(new ByteArrayInputStream(data));
            int length = in.readInt();
            for (int i = 0; i < length; i++) {
                String user = Text.readString(in);
                List<TablePermission> userPerms = (List) HbaseObjectWritableFor96Migration.readObject(in, conf);
                perms.putAll(user, userPerms);
            }
        } catch (IOException e) {
            throw new DeserializationException(e);
        }
        return perms;
    }
}

---

From source file:com.willetinc.hadoop.mapreduce.dynamodb.AttributeValueIOUtils.java

public static AttributeValue read(Types type, DataInput in) throws IOException {
    AttributeValue value = new AttributeValue();
    switch (type) {
    case STRING://from ww  w  .jav a 2s . co  m
        value.withS(Text.readString(in));
        break;
    case NUMBER:
        value.withN(Text.readString(in));
        break;
    case BINARY:
        byte[] bytes = WritableUtils.readCompressedByteArray(in);
        ByteBuffer buf = ByteBuffer.wrap(bytes);
        value.withB(buf);
    case STRING_SET:
    case NUMBER_SET:
    case BINARY_SET: {
        // handle sets
        int size = in.readInt();
        List<AttributeValue> values = new ArrayList<AttributeValue>(size);
        for (int i = 0; i < size; i++) {
            switch (type) {
            case STRING_SET:
                values.add(read(Types.STRING, in));
                break;
            case NUMBER_SET:
                values.add(read(Types.NUMBER, in));
                break;
            case BINARY_SET:
                values.add(read(Types.BINARY, in));
                break;
            default:
                throw new IOException("Nested sets of sets are not permitted");
            }
        }
        break;
    }
    }

    return value;
}

---

From source file:org.apache.hadoop.hdfs.server.namenode.FSImageSerialization.java

public static CacheDirectiveInfo readCacheDirectiveInfo(DataInput in) throws IOException {
    CacheDirectiveInfo.Builder builder = new CacheDirectiveInfo.Builder();
    builder.setId(readLong(in));/*from www  .  j  av  a 2  s.c om*/
    int flags = in.readInt();
    if ((flags & 0x1) != 0) {
        builder.setPath(new Path(readString(in)));
    }
    if ((flags & 0x2) != 0) {
        builder.setReplication(readShort(in));
    }
    if ((flags & 0x4) != 0) {
        builder.setPool(readString(in));
    }
    if ((flags & 0x8) != 0) {
        builder.setExpiration(CacheDirectiveInfo.Expiration.newAbsolute(readLong(in)));
    }
    if ((flags & ~0xF) != 0) {
        throw new IOException("unknown flags set in " + "ModifyCacheDirectiveInfoOp: " + flags);
    }
    return builder.build();
}

---

From source file:com.fiorano.openesb.application.DmiObject.java

/**
 * Utility method to read a DmiObject from input stream
 * @param dmiType type of dmi object/*  w w  w.j  a v a2s  .c om*/
 * @param in input stream
 * @param versionNo version
 * @throws IOException IOException
 */
public static DmiObject fromStream(int dmiType, DataInput in, int versionNo) throws IOException {
    try {
        if (in.readInt() != 0) {
            DmiObject dmi = DmiObject.getDatamodelObject(dmiType);
            dmi.fromStream(in, versionNo);
            return dmi;
        } else
            return null;
    } catch (FioranoException ex) {
        throw (IOException) new IOException().initCause(ex);
    }
}

---

• «
• 1
• 2
• 3
• 4
• 5
• 6
• 7
• 8
• 9
• 10
• 11
• 12
• 13
• 14
• 15
• 16
• 17
• 18
• 19
• 20
• 21
• 22
• 23
• 24
• 25
• 26
• 27
• 28
• 29
• »