DatabaseInfo (H2 Database Engine 2.0.0 API)

java.lang.Object
- org.h2.jmx.DatabaseInfo

所有已实现的接口:

DatabaseInfoMBean
```
public class DatabaseInfo
extends Object
implements DatabaseInfoMBean
```
The MBean implementation.

作者:

Eric Dong, Thomas Mueller

方法概要

所有方法静态方法实例方法具体方法
限定符和类型	方法和说明
`int`	`getCacheSize()` The current cache size in KB.
`int`	`getCacheSizeMax()` The maximum cache size in KB.
`long`	`getFileReadCount()` The file read count since the database was opened.
`long`	`getFileSize()` The database file size in KB.
`long`	`getFileWriteCount()` The number of write operations since the database was opened.
`String`	`getMode()` The database compatibility mode (REGULAR if no compatibility mode is used).
`int`	`getTraceLevel()` The trace level (0 disabled, 1 error, 2 info, 3 debug).
`String`	`getVersion()` The database version.
`boolean`	`isExclusive()` Is the database open in exclusive mode?
`boolean`	`isReadOnly()` Is the database read-only?
`String`	`listSessions()` List sessions, including the queries that are in progress, and locked tables.
`String`	`listSettings()` List the database settings.
`static void`	`registerMBean(ConnectionInfo connectionInfo, Database database)` Registers an MBean for the database.
`void`	`setCacheSizeMax(int kb)` Change the maximum size.
`void`	`setTraceLevel(int level)` Set the trace level.
`static void`	`unregisterMBean(String name)` Unregisters the MBean for the database if one is registered.

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
  - registerMBean
```
public static void registerMBean(ConnectionInfo connectionInfo,
                                 Database database)
                          throws JMException
```
    Registers an MBean for the database.
    
    参数:
    
    connectionInfo - connection info
    
    database - database
    
    抛出:
    
    JMException - on failure
  - unregisterMBean
```
public static void unregisterMBean(String name)
                            throws Exception
```
    Unregisters the MBean for the database if one is registered.
    
    参数:
    
    name - database name
    
    抛出:
    
    JMException - on failure
    
    Exception
  - isExclusive
```
public boolean isExclusive()
```
    从接口复制的说明: DatabaseInfoMBean
    
    Is the database open in exclusive mode?
    
    指定者:
    
    isExclusive 在接口中 DatabaseInfoMBean
    
    返回:
    
    true if the database is open in exclusive mode, false otherwise
  - isReadOnly
```
public boolean isReadOnly()
```
    从接口复制的说明: DatabaseInfoMBean
    
    Is the database read-only?
    
    指定者:
    
    isReadOnly 在接口中 DatabaseInfoMBean
    
    返回:
    
    true if the database is read-only, false otherwise
  - getMode
```
public String getMode()
```
    从接口复制的说明: DatabaseInfoMBean
    
    The database compatibility mode (REGULAR if no compatibility mode is used).
    
    指定者:
    
    getMode 在接口中 DatabaseInfoMBean
    
    返回:
    
    the database mode
  - getTraceLevel
```
public int getTraceLevel()
```
    从接口复制的说明: DatabaseInfoMBean
    
    The trace level (0 disabled, 1 error, 2 info, 3 debug).
    
    指定者:
    
    getTraceLevel 在接口中 DatabaseInfoMBean
    
    返回:
    
    the level
  - setTraceLevel
```
public void setTraceLevel(int level)
```
    从接口复制的说明: DatabaseInfoMBean
    
    Set the trace level.
    
    指定者:
    
    setTraceLevel 在接口中 DatabaseInfoMBean
    
    参数:
    
    level - the new value
  - getFileWriteCount
```
public long getFileWriteCount()
```
    从接口复制的说明: DatabaseInfoMBean
    
    The number of write operations since the database was opened.
    
    指定者:
    
    getFileWriteCount 在接口中 DatabaseInfoMBean
    
    返回:
    
    the write count
  - getFileReadCount
```
public long getFileReadCount()
```
    从接口复制的说明: DatabaseInfoMBean
    
    The file read count since the database was opened.
    
    指定者:
    
    getFileReadCount 在接口中 DatabaseInfoMBean
    
    返回:
    
    the read count
  - getFileSize
```
public long getFileSize()
```
    从接口复制的说明: DatabaseInfoMBean
    
    The database file size in KB.
    
    指定者:
    
    getFileSize 在接口中 DatabaseInfoMBean
    
    返回:
    
    the number of pages
  - getCacheSizeMax
```
public int getCacheSizeMax()
```
    从接口复制的说明: DatabaseInfoMBean
    
    The maximum cache size in KB.
    
    指定者:
    
    getCacheSizeMax 在接口中 DatabaseInfoMBean
    
    返回:
    
    the maximum size
  - setCacheSizeMax
```
public void setCacheSizeMax(int kb)
```
    从接口复制的说明: DatabaseInfoMBean
    
    Change the maximum size.
    
    指定者:
    
    setCacheSizeMax 在接口中 DatabaseInfoMBean
    
    参数:
    
    kb - the cache size in KB.
  - getCacheSize
```
public int getCacheSize()
```
    从接口复制的说明: DatabaseInfoMBean
    
    The current cache size in KB.
    
    指定者:
    
    getCacheSize 在接口中 DatabaseInfoMBean
    
    返回:
    
    the current size
  - getVersion
```
public String getVersion()
```
    从接口复制的说明: DatabaseInfoMBean
    
    The database version.
    
    指定者:
    
    getVersion 在接口中 DatabaseInfoMBean
    
    返回:
    
    the version
  - listSettings
```
public String listSettings()
```
    从接口复制的说明: DatabaseInfoMBean
    
    List the database settings.
    
    指定者:
    
    listSettings 在接口中 DatabaseInfoMBean
    
    返回:
    
    the database settings
  - listSessions
```
public String listSessions()
```
    从接口复制的说明: DatabaseInfoMBean
    
    List sessions, including the queries that are in progress, and locked tables.
    
    指定者:
    
    listSessions 在接口中 DatabaseInfoMBean
    
    返回:
    
    information about the sessions

类 DatabaseInfo

方法概要

从类继承的方法 java.lang.Object

方法详细资料

registerMBean

unregisterMBean

isExclusive

isReadOnly

getMode

getTraceLevel

setTraceLevel

getFileWriteCount

getFileReadCount

getFileSize

getCacheSizeMax

setCacheSizeMax

getCacheSize

getVersion

listSettings

listSessions