Package org.apache.flink.table.data.columnar.vector.heap

Class HeapDoubleVector

java.lang.Object

org.apache.flink.table.data.columnar.vector.writable.AbstractWritableVector

org.apache.flink.table.data.columnar.vector.heap.AbstractHeapVector

org.apache.flink.table.data.columnar.vector.heap.HeapDoubleVector

All Implemented Interfaces:

Serializable, ColumnVector, DoubleColumnVector, WritableColumnVector, WritableDoubleVector

@Internal
public class HeapDoubleVector
extends AbstractHeapVector
implements WritableDoubleVector

This class represents a nullable double precision floating point column vector. This class will be used for operations on all floating point double types and as such will use a 64-bit double value to hold the biggest possible value.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
double[]	vector

Fields inherited from class org.apache.flink.table.data.columnar.vector.heap.AbstractHeapVector

BYTE_ARRAY_OFFSET, dictionaryIds, DOUBLE_ARRAY_OFFSET, FLOAT_ARRAY_OFFSET, INT_ARRAY_OFFSET, isNull, LITTLE_ENDIAN, LONG_ARRAY_OFFSET, UNSAFE

Fields inherited from class org.apache.flink.table.data.columnar.vector.writable.AbstractWritableVector

dictionary, noNulls

Constructor Summary

Constructors

Constructor	Description
HeapDoubleVector(int len)	Don't use this except for testing purposes.

Method Summary

Modifier and Type	Method	Description
void	fill(double value)	Fill the column vector with the provided value.
double	getDouble(int i)
void	setDouble(int i, double value)	Set double at rowId with the provided value.
void	setDoublesFromBinary(int rowId, int count, byte[] src, int srcIndex)	Set doubles from binary, need use UNSAFE to copy.

Methods inherited from class org.apache.flink.table.data.columnar.vector.heap.AbstractHeapVector

fillWithNulls, getDictionaryIds, getLen, isNullAt, reserveDictionaryIds, reset, setNullAt, setNulls

Methods inherited from class org.apache.flink.table.data.columnar.vector.writable.AbstractWritableVector

hasDictionary, setDictionary

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.apache.flink.table.data.columnar.vector.ColumnVector

isNullAt

Methods inherited from interface org.apache.flink.table.data.columnar.vector.writable.WritableColumnVector

fillWithNulls, getDictionaryIds, hasDictionary, reserveDictionaryIds, reset, setDictionary, setNullAt, setNulls

Field Detail

vector

public double[] vector

Constructor Detail

HeapDoubleVector

public HeapDoubleVector(int len)

Don't use this except for testing purposes.

Parameters:

len - the number of rows

Method Detail

getDouble

public double getDouble(int i)

Specified by:

getDouble in interface DoubleColumnVector

setDouble

public void setDouble(int i,
                      double value)

Description copied from interface: WritableDoubleVector

Set double at rowId with the provided value.

Specified by:

setDouble in interface WritableDoubleVector

setDoublesFromBinary

public void setDoublesFromBinary(int rowId,
                                 int count,
                                 byte[] src,
                                 int srcIndex)

Description copied from interface: WritableDoubleVector

Set doubles from binary, need use UNSAFE to copy.

Specified by:

setDoublesFromBinary in interface WritableDoubleVector

Parameters:

rowId - set start rowId.

count - count for double, so the bytes size is count * 8.

src - source binary.

srcIndex - source binary index, it is the index for byte index.

fill

public void fill(double value)

Description copied from interface: WritableDoubleVector

Fill the column vector with the provided value.

Specified by:

fill in interface WritableDoubleVector