com.alibaba.innodb.java.reader.column

接口 ColumnParser<V>

所有已知实现类:

AbstractColumnParser

public interface ColumnParser<V>

Parser for decoding from a SliceInput which contains byte array to a specific data type. For example, parse 4 bytes to an Integer.

作者:

xu.zx

方法概要

限定符和类型	方法和说明
V	readFrom(SliceInput input, Column column) Read value from byte array input.
V	readFrom(SliceInput input, int len, String charset) Read value from byte array input with length and charset.
void	skipFrom(SliceInput input, Column column) For row-oriented columnar storage format, there should be a way to skip value from byte array input.
void	skipFrom(SliceInput input, int len, String charset) For row-oriented columnar storage format, there should be a way to skip value from byte array input with length and charset,
Class<?>	typeClass() Returned value class.

方法详细资料

readFrom

V readFrom(SliceInput input,
           int len,
           String charset)

Read value from byte array input with length and charset.

参数:

input - slice input

len - length

charset - charset

返回:

value

readFrom

V readFrom(SliceInput input,
           Column column)

Read value from byte array input.

参数:

input - slice input

column - column

返回:

value

skipFrom

void skipFrom(SliceInput input,
              int len,
              String charset)

For row-oriented columnar storage format, there should be a way to skip value from byte array input with length and charset,

参数:

input - slice input

len - length

charset - charset

skipFrom

void skipFrom(SliceInput input,
              Column column)

For row-oriented columnar storage format, there should be a way to skip value from byte array input.

参数:

input - slice input

column - column

typeClass

Class<?> typeClass()

Returned value class.

返回:

class