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:io.dstream.hadoop.TypeAwareWritable.java

/**
 * /*ww w  .  jav  a  2  s.  co  m*/
 */
@Override
public void readFields(DataInput in) throws IOException {
    this.valueType = in.readByte();
    switch (this.valueType) {
    case INTEGER:
        this.value = (T) Integer.valueOf(in.readInt());
        break;
    case LONG:
        this.value = (T) Long.valueOf(in.readLong());
        break;
    case NULL:
        this.value = null;
        break;
    case OBJECT:
        try {
            ObjectInputStream ois = new ObjectInputStream((DataInputStream) in);
            T value = (T) ois.readObject();
            this.value = (T) value;
        } catch (Exception e) {
            throw new IllegalStateException("Failed to deserialize value", e);
        }
        break;
    default:
        throw new IllegalStateException("Unsupported or unrecognized value type: " + this.valueType);
    }
}

From source file:parquet.hadoop.ParquetInputSplit.java

private Map<String, String> readKeyValues(DataInput in) throws IOException {
    int size = in.readInt();
    Map<String, String> map = new HashMap<String, String>(size);
    for (int i = 0; i < size; i++) {
        String key = in.readUTF().intern();
        String value = in.readUTF().intern();
        map.put(key, value);/*from  w ww .  j  ava  2 s .  co m*/
    }
    return map;
}

From source file:io.dstream.tez.io.TypeAwareWritable.java

/**
 *
 *///  www .  j  a va 2 s  .  c  o  m
@Override
public void readFields(DataInput in) throws IOException {
    this.valueType = in.readByte();
    switch (this.valueType) {
    case INTEGER:
        this.value = (T) Integer.valueOf(in.readInt());
        break;
    case LONG:
        this.value = (T) Long.valueOf(in.readLong());
        break;
    case NULL:
        this.value = null;
        break;
    case OBJECT:
        try {
            ObjectInputStream ois = new ObjectInputStream((DataInputStream) in);
            T value = (T) ois.readObject();
            this.value = value;
        } catch (Exception e) {
            throw new IllegalStateException("Failed to deserialize value", e);
        }
        break;
    default:
        throw new IllegalStateException("Unsupported or unrecognized value type: " + this.valueType);
    }
}

From source file:org.apache.giraph.block_app.reducers.array.BasicArrayReduce.java

@Override
public void readFields(DataInput in) throws IOException {
    fixedSize = in.readInt();
    typeOps = TypeOpsUtils.readTypeOps(in);
    elementReduceOp = WritableUtils.readWritableObject(in, null);
    init();/*from w  ww.ja v a2s  . c  o  m*/
}

From source file:org.apache.kylin.dict.lookup.SnapshotTable.java

void readData(DataInput in) throws IOException {
    int rowNum = in.readInt();
    if (rowNum > 0) {
        int n = in.readInt();
        rowIndices = new ArrayList<int[]>(rowNum);

        if (this.useDictionary == true) {
            this.dict = new TrieDictionary<String>();
            dict.readFields(in);//w  w  w. j a va 2s .c  om

            for (int i = 0; i < rowNum; i++) {
                int[] row = new int[n];
                this.rowIndices.add(row);
                for (int j = 0; j < n; j++) {
                    row[j] = in.readInt();
                }
            }
        } else {
            List<String[]> rows = new ArrayList<String[]>(rowNum);
            TrieDictionaryBuilder<String> b = new TrieDictionaryBuilder<String>(new StringBytesConverter());

            for (int i = 0; i < rowNum; i++) {
                String[] row = new String[n];
                rows.add(row);
                for (int j = 0; j < n; j++) {
                    row[j] = in.readUTF();
                    // NULL_STR is tricky, but we don't want to break the current snapshots
                    if (row[j].equals(NULL_STR))
                        row[j] = null;

                    b.addValue(row[j]);
                }
            }
            this.dict = b.build(0);
            for (String[] row : rows) {
                int[] rowIndex = new int[n];
                for (int i = 0; i < n; i++) {
                    rowIndex[i] = dict.getIdFromValue(row[i]);
                }
                this.rowIndices.add(rowIndex);
            }
        }
    } else {
        rowIndices = new ArrayList<int[]>();
        dict = new TrieDictionary<String>();
    }
}

From source file:edu.umn.cs.spatialHadoop.indexing.GridPartitioner.java

@Override
public void readFields(DataInput in) throws IOException {
    this.x = in.readDouble();
    this.y = in.readDouble();
    this.tileWidth = in.readDouble();
    this.tileHeight = in.readDouble();
    this.numTiles = in.readInt();
    this.numColumns = (int) Math.round(Math.sqrt(numTiles));
    this.numRows = (int) Math.ceil(numTiles / numColumns);
}

From source file:com.blackberry.logdriver.boom.LogLineData.java

@Override
public void readFields(DataInput in) throws IOException {
    timestamp = in.readLong();/*from ww  w .ja v a  2 s.  c  o  m*/
    createTime = in.readLong();
    blockNumber = in.readLong();
    lineNumber = in.readLong();
    eventId = in.readInt();
}

From source file:IndexService.IColumnInputSplit.java

@Override
public void readFields(DataInput in) throws IOException {
    this.file = new Path(in.readUTF());
    this.splitbyline = in.readBoolean();
    this.wholefileASasplit = in.readBoolean();
    if (splitbyline) {
        if (!wholefileASasplit) {
            this.beginline = in.readInt();
            this.recnum = in.readInt();
        }//from www .j av  a  2 s. co  m
    } else {
        this.beginkey = new IRecord.IFValue();
        beginkey.readFields(in);
        this.recnum = in.readInt();
    }
}

From source file:org.apache.giraph.graph.VertexMutations.java

@Override
public void readFields(DataInput input) throws IOException {
    addedVertexList.clear();/*from ww  w.ja v  a2 s.c  om*/
    addedEdgeList.clear();
    removedEdgeList.clear();

    int addedVertexListSize = input.readInt();
    for (int i = 0; i < addedVertexListSize; ++i) {
        BasicVertex<I, V, E, M> vertex = BspUtils.createVertex(conf);
        vertex.readFields(input);
        addedVertexList.add(vertex);
    }
    removedVertexCount = input.readInt();
    int addedEdgeListSize = input.readInt();
    for (int i = 0; i < addedEdgeListSize; ++i) {
        I destVertex = BspUtils.<I>createVertexIndex(conf);
        destVertex.readFields(input);
        E edgeValue = BspUtils.<E>createEdgeValue(conf);
        edgeValue.readFields(input);
        addedEdgeList.add(new Edge<I, E>(destVertex, edgeValue));
    }
    int removedEdgeListSize = input.readInt();
    for (int i = 0; i < removedEdgeListSize; ++i) {
        I removedEdge = BspUtils.<I>createVertexIndex(conf);
        removedEdge.readFields(input);
        removedEdgeList.add(removedEdge);
    }
}

From source file:IndexService.IndexMergeIFormatSplit.java

@Override
public void readFields(DataInput in) throws IOException {
    this.file = new Path(in.readUTF());
    this.splitbyline = in.readBoolean();
    this.wholefileASasplit = in.readBoolean();
    if (splitbyline) {
        if (!wholefileASasplit) {
            this.beginline = in.readInt();
            this.recnum = in.readInt();
        }/*from  w w  w  . j a  va 2s . c  om*/
    } else {
        this.beginkey = new IRecord.IFValue();
        beginkey.readFields(in);
        this.recnum = in.readInt();
    }

}