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

类 HeapBytesVector

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.HeapBytesVector

所有已实现的接口:

Serializable, BytesColumnVector, ColumnVector, WritableBytesVector, WritableColumnVector

public class HeapBytesVector
extends AbstractHeapVector
implements WritableBytesVector

This class supports string and binary data by value reference -- i.e. each field is explicitly present, as opposed to provided by a dictionary reference. In some cases, all the values will be in the same byte array to begin with, but this need not be the case. If each value is in a separate byte array to start with, or not all of the values are in the same original byte array, you can still assign data by reference into this column vector. This gives flexibility to use this in multiple situations.

When setting data by reference, the caller is responsible for allocating the byte arrays used to hold the data. You can also set data by value, as long as you call the initBuffer() method first. You can mix "by value" and "by reference" in the same column vector, though that use is probably not typical.

另请参阅:

序列化表格

嵌套类概要

从接口继承的嵌套类/接口 org.apache.flink.table.data.vector.BytesColumnVector

BytesColumnVector.Bytes

字段概要

字段

限定符和类型	字段和说明
byte[]	buffer buffer to use when actually copying in data.
int[]	length The length of each field.
int[]	start start offset of each field.

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
HeapBytesVector(int size) Don't call this constructor except for testing purposes.

方法概要

限定符和类型	方法和说明
void	appendBytes(int elementNum, byte[] sourceBuf, int start, int length) Append byte[] at rowId with the provided value.
void	fill(byte[] value) Fill the column vector with the provided value.
BytesColumnVector.Bytes	getBytes(int i)
void	reset() Resets the column to default state

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

fillWithNulls, getDictionaryIds, isNullAt, reserveDictionaryIds, 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, 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

start

public int[] start

start offset of each field.

length

public int[] length

The length of each field.

buffer

public byte[] buffer

buffer to use when actually copying in data.

构造器详细资料

HeapBytesVector

public HeapBytesVector(int size)

Don't call this constructor except for testing purposes.

参数:

size - number of elements in the column vector

方法详细资料

reset

public void reset()

从类复制的说明: AbstractHeapVector

Resets the column to default state. - fills the isNull array with false. - sets noNulls to true.

指定者:

reset 在接口中 WritableColumnVector

覆盖:

reset 在类中 AbstractHeapVector

appendBytes

public void appendBytes(int elementNum,
                        byte[] sourceBuf,
                        int start,
                        int length)

从接口复制的说明: WritableBytesVector

Append byte[] at rowId with the provided value. Note: Must append values according to the order of rowId, can not random append.

指定者:

appendBytes 在接口中 WritableBytesVector

fill

public void fill(byte[] value)

从接口复制的说明: WritableBytesVector

Fill the column vector with the provided value.

指定者:

fill 在接口中 WritableBytesVector

getBytes

public BytesColumnVector.Bytes getBytes(int i)

指定者:

getBytes 在接口中 BytesColumnVector