IsolationLevel (H2 Database Engine 2.0.0 API)

java.lang.Object
- java.lang.Enum<IsolationLevel>
- - org.h2.engine.IsolationLevel

所有已实现的接口:

Serializable, Comparable<IsolationLevel>
```
public enum IsolationLevel
extends Enum<IsolationLevel>
```
Level of isolation.

枚举常量概要

枚举常量
枚举常量和说明
`READ_COMMITTED` Dirty reads aren't allowed; non-repeatable reads and phantom reads are allowed.
`READ_UNCOMMITTED` Dirty reads, non-repeatable reads and phantom reads are allowed.
`REPEATABLE_READ` Dirty reads and non-repeatable reads aren't allowed; phantom reads are allowed.
`SERIALIZABLE` Dirty reads, non-repeatable reads and phantom reads are'n allowed.
`SNAPSHOT` Dirty reads, non-repeatable reads and phantom reads are'n allowed.

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
`boolean`	`allowNonRepeatableRead()` Returns whether a non-repeatable read phenomena is allowed.
`static IsolationLevel`	`fromJdbc(int level)` Returns the isolation level from LOCK_MODE equivalent for PageStore and old versions of H2.
`static IsolationLevel`	`fromLockMode(int lockMode)` Returns the isolation level from LOCK_MODE equivalent for PageStore and old versions of H2.
`static IsolationLevel`	`fromSql(String sql)` Returns the isolation level from its SQL name.
`int`	`getJdbc()` Returns the JDBC constant for this isolation level.
`int`	`getLockMode()` Returns the LOCK_MODE equivalent for PageStore and old versions of H2.
`String`	`getSQL()` Returns the SQL representation of this isolation level.
`static IsolationLevel`	`valueOf(String name)` 返回带有指定名称的该类型的枚举常量。
`static IsolationLevel[]`	`values()` 按照声明该枚举类型的常量的顺序, 返回包含这些常量的数组。

从类继承的方法 java.lang.Enum
clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

从类继承的方法 java.lang.Object
getClass, notify, notifyAll, wait, wait, wait

- 枚举常量详细资料
  - READ_UNCOMMITTED
```
public static final IsolationLevel READ_UNCOMMITTED
```
    Dirty reads, non-repeatable reads and phantom reads are allowed.
  - READ_COMMITTED
```
public static final IsolationLevel READ_COMMITTED
```
    Dirty reads aren't allowed; non-repeatable reads and phantom reads are allowed.
  - REPEATABLE_READ
```
public static final IsolationLevel REPEATABLE_READ
```
    Dirty reads and non-repeatable reads aren't allowed; phantom reads are allowed.
  - SNAPSHOT
```
public static final IsolationLevel SNAPSHOT
```
    Dirty reads, non-repeatable reads and phantom reads are'n allowed.
  - SERIALIZABLE
```
public static final IsolationLevel SERIALIZABLE
```
    Dirty reads, non-repeatable reads and phantom reads are'n allowed. Concurrent and serial execution of transactions with this isolation level should have the same effect.
- 方法详细资料
  - values
```
public static IsolationLevel[] values()
```
    按照声明该枚举类型的常量的顺序, 返回包含这些常量的数组。该方法可用于迭代常量, 如下所示:
```
for (IsolationLevel c : IsolationLevel.values())
    System.out.println(c);
```
    返回:
    
    按照声明该枚举类型的常量的顺序返回的包含这些常量的数组
  - valueOf
```
public static IsolationLevel valueOf(String name)
```
    返回带有指定名称的该类型的枚举常量。字符串必须与用于声明该类型的枚举常量的标识符完全匹配。(不允许有多余的空格字符。)
    
    参数:
    
    name - 要返回的枚举常量的名称。
    
    返回:
    
    返回带有指定名称的枚举常量
    
    抛出:
    
    IllegalArgumentException - 如果该枚举类型没有带有指定名称的常量
    
    NullPointerException - 如果参数为空值
  - fromJdbc
```
public static IsolationLevel fromJdbc(int level)
```
    Returns the isolation level from LOCK_MODE equivalent for PageStore and old versions of H2.
    
    参数:
    
    level - the LOCK_MODE value
    
    返回:
    
    the isolation level
  - fromLockMode
```
public static IsolationLevel fromLockMode(int lockMode)
```
    Returns the isolation level from LOCK_MODE equivalent for PageStore and old versions of H2.
    
    参数:
    
    lockMode - the LOCK_MODE value
    
    返回:
    
    the isolation level
  - fromSql
```
public static IsolationLevel fromSql(String sql)
```
    Returns the isolation level from its SQL name.
    
    参数:
    
    sql - the SQL name
    
    返回:
    
    the isolation level from its SQL name
  - getSQL
```
public String getSQL()
```
    Returns the SQL representation of this isolation level.
    
    返回:
    
    SQL representation of this isolation level
  - getJdbc
```
public int getJdbc()
```
    Returns the JDBC constant for this isolation level.
    
    返回:
    
    the JDBC constant for this isolation level
  - getLockMode
```
public int getLockMode()
```
    Returns the LOCK_MODE equivalent for PageStore and old versions of H2.
    
    返回:
    
    the LOCK_MODE equivalent
  - allowNonRepeatableRead
```
public boolean allowNonRepeatableRead()
```
    Returns whether a non-repeatable read phenomena is allowed.
    
    返回:
    
    whether a non-repeatable read phenomena is allowed

枚举 IsolationLevel

枚举常量概要

方法概要

从类继承的方法 java.lang.Enum

从类继承的方法 java.lang.Object

枚举常量详细资料

READ_UNCOMMITTED

READ_COMMITTED

REPEATABLE_READ

SNAPSHOT

SERIALIZABLE

方法详细资料

values

valueOf

fromJdbc

fromLockMode

fromSql

getSQL

getJdbc

getLockMode

allowNonRepeatableRead