Trace (H2 Database Engine 2.0.0 API)

java.lang.Object
- org.h2.message.Trace

```
public final class Trace
extends Object
```
This class represents a trace module.

字段概要

字段
限定符和类型	字段和说明
`static int`	`COMMAND` The trace module id for commands.
`static int`	`CONSTRAINT` The trace module id for constraints.
`static int`	`DATABASE` The trace module id for databases.
`static int`	`FILE_LOCK` The trace module id for file locks.
`static int`	`FUNCTION` The trace module id for functions.
`static int`	`INDEX` The trace module id for indexes.
`static int`	`JDBC` The trace module id for the JDBC API.
`static int`	`JDBCX` The trace module id for the JDBCX API
`static int`	`LOCK` The trace module id for locks.
`static int`	`SCHEMA` The trace module id for schemas.
`static int`	`SEQUENCE` The trace module id for sequences.
`static int`	`SETTING` The trace module id for settings.
`static int`	`TABLE` The trace module id for tables.
`static int`	`TRIGGER` The trace module id for triggers.
`static int`	`USER` The trace module id for users.

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
`void`	`debug(String s)` Write a message with trace level DEBUG to the trace system.
`void`	`debug(String s, Object... params)` Write a message with trace level DEBUG to the trace system.
`void`	`debug(Throwable t, String s)` Write a message with trace level DEBUG to the trace system.
`void`	`error(Throwable t, String s)` Write a message with trace level ERROR to the trace system.
`void`	`error(Throwable t, String s, Object... params)` Write a message with trace level ERROR to the trace system.
`static String`	`formatParams(ArrayList<? extends ParameterInterface> parameters)` Format the parameter list.
`void`	`info(String s)` Write a message with trace level INFO to the trace system.
`void`	`info(String s, Object... params)` Write a message with trace level INFO to the trace system.
`void`	`infoCode(String java)` Write Java source code with trace level INFO to the trace system.
`void`	`infoSQL(String sql, String params, long count, long time)` Write a SQL statement with trace level INFO to the trace system.
`boolean`	`isDebugEnabled()` Check if the trace level is equal or higher than DEBUG.
`boolean`	`isInfoEnabled()` Check if the trace level is equal or higher than INFO.
`void`	`setLevel(int level)` Set the trace level of this component.

从类继承的方法 java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- 字段详细资料
  - COMMAND
```
public static final int COMMAND
```
    The trace module id for commands.
    
    另请参阅:
    
    常量字段值
  - CONSTRAINT
```
public static final int CONSTRAINT
```
    The trace module id for constraints.
    
    另请参阅:
    
    常量字段值
  - DATABASE
```
public static final int DATABASE
```
    The trace module id for databases.
    
    另请参阅:
    
    常量字段值
  - FUNCTION
```
public static final int FUNCTION
```
    The trace module id for functions.
    
    另请参阅:
    
    常量字段值
  - FILE_LOCK
```
public static final int FILE_LOCK
```
    The trace module id for file locks.
    
    另请参阅:
    
    常量字段值
  - INDEX
```
public static final int INDEX
```
    The trace module id for indexes.
    
    另请参阅:
    
    常量字段值
  - JDBC
```
public static final int JDBC
```
    The trace module id for the JDBC API.
    
    另请参阅:
    
    常量字段值
  - LOCK
```
public static final int LOCK
```
    The trace module id for locks.
    
    另请参阅:
    
    常量字段值
  - SCHEMA
```
public static final int SCHEMA
```
    The trace module id for schemas.
    
    另请参阅:
    
    常量字段值
  - SEQUENCE
```
public static final int SEQUENCE
```
    The trace module id for sequences.
    
    另请参阅:
    
    常量字段值
  - SETTING
```
public static final int SETTING
```
    The trace module id for settings.
    
    另请参阅:
    
    常量字段值
  - TABLE
```
public static final int TABLE
```
    The trace module id for tables.
    
    另请参阅:
    
    常量字段值
  - TRIGGER
```
public static final int TRIGGER
```
    The trace module id for triggers.
    
    另请参阅:
    
    常量字段值
  - USER
```
public static final int USER
```
    The trace module id for users.
    
    另请参阅:
    
    常量字段值
  - JDBCX
```
public static final int JDBCX
```
    The trace module id for the JDBCX API
    
    另请参阅:
    
    常量字段值
- 方法详细资料
  - setLevel
```
public void setLevel(int level)
```
    Set the trace level of this component. This setting overrides the parent trace level.
    
    参数:
    
    level - the new level
  - isInfoEnabled
```
public boolean isInfoEnabled()
```
    Check if the trace level is equal or higher than INFO.
    
    返回:
    
    true if it is
  - isDebugEnabled
```
public boolean isDebugEnabled()
```
    Check if the trace level is equal or higher than DEBUG.
    
    返回:
    
    true if it is
  - error
```
public void error(Throwable t,
                  String s)
```
    Write a message with trace level ERROR to the trace system.
    
    参数:
    
    t - the exception
    
    s - the message
  - error
```
public void error(Throwable t,
                  String s,
                  Object... params)
```
    Write a message with trace level ERROR to the trace system.
    
    参数:
    
    t - the exception
    
    s - the message
    
    params - the parameters
  - info
```
public void info(String s)
```
    Write a message with trace level INFO to the trace system.
    
    参数:
    
    s - the message
  - info
```
public void info(String s,
                 Object... params)
```
    Write a message with trace level INFO to the trace system.
    
    参数:
    
    s - the message
    
    params - the parameters
  - formatParams
```
public static String formatParams(ArrayList<? extends ParameterInterface> parameters)
```
    Format the parameter list.
    
    参数:
    
    parameters - the parameter list
    
    返回:
    
    the formatted text
  - infoSQL
```
public void infoSQL(String sql,
                    String params,
                    long count,
                    long time)
```
    Write a SQL statement with trace level INFO to the trace system.
    
    参数:
    
    sql - the SQL statement
    
    params - the parameters used, in the for {1:...}
    
    count - the update count
    
    time - the time it took to run the statement in ms
  - debug
```
public void debug(String s,
                  Object... params)
```
    Write a message with trace level DEBUG to the trace system.
    
    参数:
    
    s - the message
    
    params - the parameters
  - debug
```
public void debug(String s)
```
    Write a message with trace level DEBUG to the trace system.
    
    参数:
    
    s - the message
  - debug
```
public void debug(Throwable t,
                  String s)
```
    Write a message with trace level DEBUG to the trace system.
    
    参数:
    
    t - the exception
    
    s - the message
  - infoCode
```
public void infoCode(String java)
```
    Write Java source code with trace level INFO to the trace system.
    
    参数:
    
    java - the source code

类 Trace

字段概要

方法概要

从类继承的方法 java.lang.Object

字段详细资料

COMMAND

CONSTRAINT

DATABASE

FUNCTION

FILE_LOCK

INDEX

JDBC

LOCK

SCHEMA

SEQUENCE

SETTING

TABLE

TRIGGER

USER

JDBCX

方法详细资料

setLevel

isInfoEnabled

isDebugEnabled

error

error

info

info

formatParams

infoSQL

debug

debug

debug

infoCode