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

类 HeapDoubleVector

java.lang.Object

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

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

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

所有已实现的接口:

Serializable, ColumnVector, DoubleColumnVector, WritableColumnVector, WritableDoubleVector

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.

另请参阅:

序列化表格

字段概要

字段

限定符和类型	字段和说明
double[]	vector

从类继承的字段 org.apache.flink.table.data.vector.heap.AbstractHeapVector

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

从类继承的字段 org.apache.flink.table.data.vector.writable.AbstractWritableVector

dictionary, noNulls

构造器概要

构造器

构造器和说明
HeapDoubleVector(int len) Don't use this except for testing purposes.

方法概要

限定符和类型	方法和说明
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.

从类继承的方法 org.apache.flink.table.data.vector.heap.AbstractHeapVector

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

从类继承的方法 org.apache.flink.table.data.vector.writable.AbstractWritableVector

hasDictionary, setDictionary

从类继承的方法 java.lang.Object

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

从接口继承的方法 org.apache.flink.table.data.vector.writable.WritableColumnVector

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

从接口继承的方法 org.apache.flink.table.data.vector.ColumnVector

isNullAt

字段详细资料

vector

public double[] vector

构造器详细资料

HeapDoubleVector

public HeapDoubleVector(int len)

Don't use this except for testing purposes.

参数:

len - the number of rows

方法详细资料

getDouble

public double getDouble(int i)

指定者:

getDouble 在接口中 DoubleColumnVector

setDouble

public void setDouble(int i,
                      double value)

从接口复制的说明: WritableDoubleVector

Set double at rowId with the provided value.

指定者:

setDouble 在接口中 WritableDoubleVector

setDoublesFromBinary

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

从接口复制的说明: WritableDoubleVector

Set doubles from binary, need use UNSAFE to copy.

指定者:

setDoublesFromBinary 在接口中 WritableDoubleVector

参数:

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)

从接口复制的说明: WritableDoubleVector

Fill the column vector with the provided value.

指定者:

fill 在接口中 WritableDoubleVector