Example usage for java.io DataInput readUTF

Introduction

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

Prototype

String readUTF() throws IOException;

Source Link

Document

Reads in a string that has been encoded using a modified UTF-8 format.

Usage

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

@SuppressWarnings("unchecked")
private static Writable readDatum(DataInput in, byte type) throws IOException {
    switch (type) {
    case TUPLE:/*from ww  w. j  a va  2  s .  co m*/
        int sz = in.readInt();
        // if sz == 0, we construct an "empty" tuple -
        // presumably the writer wrote an empty tuple!
        if (sz < 0) {
            throw new IOException("Invalid size " + sz + " for a tuple");
        }
        Tuple tp = new Tuple(sz);
        for (int i = 0; i < sz; i++) {
            byte b = in.readByte();
            tp.set(i, readDatum(in, b));
        }

        return tp;

    case NULL:
        return null;

    case INTWRITABLE:
        IntWritable iw = new IntWritable();
        iw.readFields(in);
        return iw;

    case LONGWRITABLE:
        LongWritable lw = new LongWritable();
        lw.readFields(in);
        return lw;

    case DATETIMEWRITABLE:
        DatetimeWritable dtw = new DatetimeWritable();
        dtw.readFields(in);
        return dtw;

    case DOUBLEWRITABLE:
        DoubleWritable dw = new DoubleWritable();
        dw.readFields(in);
        return dw;

    case BOOLEANWRITABLE:
        BooleanWritable bw = new BooleanWritable();
        bw.readFields(in);
        return bw;

    case BYTESWRITABLE:
        BytesWritable bsw = new BytesWritable();
        bsw.readFields(in);
        return bsw;

    case TEXT:
        Text t = new Text();
        t.readFields(in);
        return t;

    case NULLWRITABLE:
        NullWritable nw = NullWritable.get();
        nw.readFields(in);
        return nw;

    case UNKNOWN:
        String clsName = in.readUTF();
        try {
            Class<? extends Writable> cls = (Class<? extends Writable>) Class.forName(clsName);
            Writable w = (Writable) ReflectionUtils.newInstance(cls, null);
            w.readFields(in);
            return w;
        } catch (RuntimeException re) {
            LOG.info(re.getMessage());
            throw new IOException(re);
        } catch (ClassNotFoundException cnfe) {
            throw new IOException(cnfe);
        }

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

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

@Override
public void readFields(DataInput in) throws IOException {
    this.commandType = in.readInt();
    this.initWritePath = Text.readString(in);
    this.initReadPath = Text.readString(in);
    this.ableCheckPoint = in.readInt();
    this.nextSuperStepNum = in.readInt();
    this.oldCheckPoint = in.readInt();
    int count = in.readInt();
    this.aggValues = new String[count];
    for (int i = 0; i < count; i++) {
        this.aggValues[i] = Text.readString(in);
    }//from www.  j  av a  2 s.co  m
    int size = WritableUtils.readVInt(in);
    if (size > 0) {
        String[] partitionToWMName = WritableUtils.readCompressedStringArray(in);
        this.partitionToWorkerManagerNameAndPort = new HashMap<Integer, String>();
        for (int j = 0; j < size; j++) {
            this.partitionToWorkerManagerNameAndPort.put(j, partitionToWMName[j]);
        }
    }
    this.migrateStaffIDs = in.readUTF();
    this.migrateVertexCommand.readFields(in);

}

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From source file:com.mobicage.rogerthat.plugins.messaging.BrandingMgr.java

@SuppressWarnings("unchecked")
private void readLegacyStashedLockRequests(DataInput in) throws IOException, PickleException {
    int size = in.readInt();
    for (int i = 0; i < size; i++) {
        String key = in.readUTF();
        BrandedItem item = getMessageFromQueue(key);
        item.calls.add(createRpcCall("com.mobicage.capi.messaging.messageLocked",
                (Map<String, Object>) JSONValue.parse(in.readUTF())));
    }/*  www  .j  a  va 2  s  .c o m*/
}

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From source file:com.mobicage.rogerthat.plugins.messaging.BrandingMgr.java

@SuppressWarnings("unchecked")
private void readLegacyStashedMemberStatusUpdates(DataInput in) throws IOException, PickleException {
    int size = in.readInt();
    for (int i = 0; i < size; i++) {
        String key = in.readUTF();
        BrandedItem item = getMessageFromQueue(key);
        int updatesCount = in.readInt();
        for (int j = 0; j < updatesCount; j++) {
            item.calls.add(createRpcCall("com.mobicage.capi.messaging.updateMessageMemberStatus",
                    (Map<String, Object>) JSONValue.parse(in.readUTF())));
        }//from  w ww  .j  a  va 2  s .c om
    }
}

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From source file:com.mobicage.rogerthat.plugins.messaging.BrandingMgr.java

@SuppressWarnings("unchecked")
private void deserializeStashedLegacyManager(int version, DataInput in) throws IOException, PickleException {
    int msgQueueSize = in.readInt();
    for (int i = 0; i < msgQueueSize; i++) {
        try {/*from   ww  w  . ja v  a  2 s .  com*/
            Message message = new Message((Map<String, Object>) JSONValue.parse(in.readUTF()));
            mQueue.add(new BrandedItem(message));
        } catch (IncompleteMessageException e) {
            L.bug(e);
        }
    }

    if (version == 3) {
        readLegacyStashedMemberStatusUpdates(in);
    }

    if (version >= 2) {
        int friendQueueSize = in.readInt();
        for (int i = 0; i < friendQueueSize; i++) {
            try {
                FriendTO friend = new FriendTO((Map<String, Object>) JSONValue.parse(in.readUTF()));
                mQueue.add(new BrandedItem(BrandedItem.TYPE_FRIEND, friend, friend.descriptionBranding));
            } catch (IncompleteMessageException e) {
                L.bug(e);
            }
        }
    }
}

---

From source file:com.mobicage.rogerthat.plugins.messaging.BrandingMgr.java

@Override
public void readFromPickle(int version, DataInput in) throws IOException, PickleException {
    T.dontCare();//  w w w.  j a v a 2s  .c  om
    if (version < 4) {
        deserializeStashedLegacyManager(version, in);
    } else {
        // Read branding queue
        int queueSize = in.readInt();
        for (int i = 0; i < queueSize; i++) {
            @SuppressWarnings("unchecked")
            Map<String, Object> jsonMap = (Map<String, Object>) JSONValue.parse(in.readUTF());
            try {
                mQueue.add(new BrandedItem(jsonMap));
            } catch (IncompleteMessageException e) {
                L.bug(e);
            }
        }

        if (version < 6) {
            readLegacyStashedMemberStatusUpdates(in);
            if (version >= 5) {
                readLegacyStashedLockRequests(in);
            }
        }

        if (version >= 7) {
            int downloadQueueSize = in.readInt();
            for (int i = 0; i < downloadQueueSize; i++) {
                @SuppressWarnings("unchecked")
                Map<String, Object> jsonMap = (Map<String, Object>) JSONValue.parse(in.readUTF());
                try {
                    final BrandedItem item = new BrandedItem(jsonMap);
                    mDownloadMgrQueue.put(item.downloadId, item);
                } catch (IncompleteMessageException e) {
                    L.bug(e);
                }
            }
        }
    }
}

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From source file:org.apache.accumulo.core.client.mapreduce.RangeInputSplit.java

@Override
public void readFields(DataInput in) throws IOException {
    range.readFields(in);//from w ww. ja  va2s. c om
    tableName = in.readUTF();
    tableId = in.readUTF();
    int numLocs = in.readInt();
    locations = new String[numLocs];
    for (int i = 0; i < numLocs; ++i)
        locations[i] = in.readUTF();

    if (in.readBoolean()) {
        isolatedScan = in.readBoolean();
    }

    if (in.readBoolean()) {
        offline = in.readBoolean();
    }

    if (in.readBoolean()) {
        localIterators = in.readBoolean();
    }

    if (in.readBoolean()) {
        mockInstance = in.readBoolean();
    }

    if (in.readBoolean()) {
        int numColumns = in.readInt();
        List<String> columns = new ArrayList<String>(numColumns);
        for (int i = 0; i < numColumns; i++) {
            columns.add(in.readUTF());
        }

        fetchedColumns = InputConfigurator.deserializeFetchedColumns(columns);
    }

    if (in.readBoolean()) {
        String strAuths = in.readUTF();
        auths = new Authorizations(strAuths.getBytes(Constants.UTF8));
    }

    if (in.readBoolean()) {
        principal = in.readUTF();
    }

    if (in.readBoolean()) {
        int ordinal = in.readInt();
        this.tokenSource = TokenSource.values()[ordinal];

        switch (this.tokenSource) {
        case INLINE:
            String tokenClass = in.readUTF();
            byte[] base64TokenBytes = in.readUTF().getBytes(Constants.UTF8);
            byte[] tokenBytes = Base64.decodeBase64(base64TokenBytes);

            this.token = AuthenticationTokenSerializer.deserialize(tokenClass, tokenBytes);
            break;

        case FILE:
            this.tokenFile = in.readUTF();

            break;
        default:
            throw new IOException("Cannot parse unknown TokenSource ordinal");
        }
    }

    if (in.readBoolean()) {
        instanceName = in.readUTF();
    }

    if (in.readBoolean()) {
        zooKeepers = in.readUTF();
    }

    if (in.readBoolean()) {
        level = Level.toLevel(in.readInt());
    }
}

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From source file:org.apache.bigtop.bigpetstore.generator.PetStoreTransactionInputSplit.java

public void readFields(DataInput dataInputStream) throws IOException {
    records = dataInputStream.readInt();
    state = State.valueOf(dataInputStream.readUTF());
    customerIdRange = Range.between(dataInputStream.readLong(), dataInputStream.readLong());
}

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From source file:org.apache.carbondata.core.metadata.schema.table.DataMapSchema.java

@Override
public void readFields(DataInput in) throws IOException {
    this.dataMapName = in.readUTF();
    this.providerName = in.readUTF();
    boolean isRelationIdentifierExists = in.readBoolean();
    if (isRelationIdentifierExists) {
        this.relationIdentifier = new RelationIdentifier(null, null, null);
        this.relationIdentifier.readFields(in);
    }//from   ww w .  j ava  2 s  .  c o  m
    boolean isChildSchemaExists = in.readBoolean();
    if (isChildSchemaExists) {
        this.childSchema = new TableSchema();
        this.childSchema.readFields(in);
    }

    int mapSize = in.readShort();
    this.properties = new HashMap<>(mapSize);
    for (int i = 0; i < mapSize; i++) {
        String key = in.readUTF();
        String value = in.readUTF();
        this.properties.put(key, value);
    }
}

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

/**
 * Reads an instance of {@code String} from a {@code DataInput} given the header byte already
 * being read. The return value may be {@code null}.
 *
 * @throws IOException A problem occurs while reading from {@code in}
 *
 * @since GemFire 5.7/*from   ww  w .  ja  va 2s.c  o m*/
 */
public static String readString(DataInput in, byte header) throws IOException {
    if (header == DSCODE.STRING_BYTES) {
        int len = in.readUnsignedShort();
        if (logger.isTraceEnabled(LogMarker.SERIALIZER)) {
            logger.trace(LogMarker.SERIALIZER, "Reading STRING_BYTES of len={}", len);
        }
        byte[] buf = new byte[len];
        in.readFully(buf, 0, len);
        return new String(buf, 0); // intentionally using deprecated constructor
    } else if (header == DSCODE.STRING) {
        if (logger.isTraceEnabled(LogMarker.SERIALIZER)) {
            logger.trace(LogMarker.SERIALIZER, "Reading utf STRING");
        }
        return in.readUTF();
    } else if (header == DSCODE.NULL_STRING) {
        if (logger.isTraceEnabled(LogMarker.SERIALIZER)) {
            logger.trace(LogMarker.SERIALIZER, "Reading NULL_STRING");
        }
        return null;
    } else if (header == DSCODE.HUGE_STRING_BYTES) {
        int len = in.readInt();
        if (logger.isTraceEnabled(LogMarker.SERIALIZER)) {
            logger.trace(LogMarker.SERIALIZER, "Reading HUGE_STRING_BYTES of len={}", len);
        }
        byte[] buf = new byte[len];
        in.readFully(buf, 0, len);
        return new String(buf, 0); // intentionally using deprecated constructor
    } else if (header == DSCODE.HUGE_STRING) {
        int len = in.readInt();
        if (logger.isTraceEnabled(LogMarker.SERIALIZER)) {
            logger.trace(LogMarker.SERIALIZER, "Reading HUGE_STRING of len={}", len);
        }
        char[] buf = new char[len];
        for (int i = 0; i < len; i++) {
            buf[i] = in.readChar();
        }
        return new String(buf);
    } else {
        String s = "Unknown String header " + header;
        throw new IOException(s);
    }
}

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