org.h2.mvstore.db

类 TransactionStore.ArrayType

java.lang.Object

org.h2.mvstore.db.TransactionStore.ArrayType

所有已实现的接口:

DataType

封闭类:

TransactionStore

public static class TransactionStore.ArrayType
extends Object
implements DataType

A data type that contains an array of objects with the specified data types.

方法概要

限定符和类型	方法和说明
int	compare(Object aObj, Object bObj) Compare two keys.
int	getMemory(Object obj) Estimate the used memory in bytes.
Object	read(ByteBuffer buff) Read an object.
void	read(ByteBuffer buff, Object[] obj, int len, boolean key) Read a list of objects.
void	write(WriteBuffer buff, Object obj) Write an object.
void	write(WriteBuffer buff, Object[] obj, int len, boolean key) Write a list of objects.

从类继承的方法 java.lang.Object

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

方法详细资料

getMemory

public int getMemory(Object obj)

从接口复制的说明: DataType

Estimate the used memory in bytes.

指定者:

getMemory 在接口中 DataType

参数:

obj - the object

返回:

the used memory

compare

public int compare(Object aObj,
                   Object bObj)

从接口复制的说明: DataType

Compare two keys.

指定者:

compare 在接口中 DataType

参数:

aObj - the first key

bObj - the second key

返回:

-1 if the first key is smaller, 1 if larger, and 0 if equal

read

public void read(ByteBuffer buff,
                 Object[] obj,
                 int len,
                 boolean key)

从接口复制的说明: DataType

Read a list of objects.

指定者:

read 在接口中 DataType

参数:

buff - the target buffer

obj - the objects

len - the number of objects to read

key - whether the objects are keys

write

public void write(WriteBuffer buff,
                  Object[] obj,
                  int len,
                  boolean key)

从接口复制的说明: DataType

Write a list of objects.

指定者:

write 在接口中 DataType

参数:

buff - the target buffer

obj - the objects

len - the number of objects to write

key - whether the objects are keys

write

public void write(WriteBuffer buff,
                  Object obj)

从接口复制的说明: DataType

Write an object.

指定者:

write 在接口中 DataType

参数:

buff - the target buffer

obj - the value

read

public Object read(ByteBuffer buff)

从接口复制的说明: DataType

Read an object.

指定者:

read 在接口中 DataType

参数:

buff - the source buffer

返回:

the object