XBLogger (XMLBeans 4.0.0 Documentation)

java.lang.Object
- org.apache.xmlbeans.impl.common.XBLogger

Direct Known Subclasses:

NullLogger
```
public abstract class XBLogger
extends Object
```
A logger interface that strives to make it as easy as possible for developers to write log calls, while simultaneously making those calls as cheap as possible by performing lazy evaluation of the log message.

Field Summary

Fields
Modifier and Type	Field and Description
`static int`	`DEBUG`
`static int`	`ERROR`
`static int`	`FATAL`
`static int`	`INFO`
`protected static String[]`	`LEVEL_STRINGS` Long strings for numeric log level.
`protected static String[]`	`LEVEL_STRINGS_SHORT` Short strings for numeric log level.
`static int`	`WARN`

Method Summary

All Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method and Description
`protected abstract void`	`_log(int level, Object obj1)` Log a message
`protected abstract void`	`_log(int level, Object obj1, Throwable exception)` Log a message
`abstract boolean`	`check(int level)` Check if a logger is enabled to log at the specified level This allows code to avoid building strings or evaluating functions in the arguments to log.
`abstract void`	`initialize(String cat)`
`void`	`log(int level, Object... objs)` Log a message.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - DEBUG
```
public static final int DEBUG
```
    See Also:
    
    Constant Field Values
  - INFO
```
public static final int INFO
```
    See Also:
    
    Constant Field Values
  - WARN
```
public static final int WARN
```
    See Also:
    
    Constant Field Values
  - ERROR
```
public static final int ERROR
```
    See Also:
    
    Constant Field Values
  - FATAL
```
public static final int FATAL
```
    See Also:
    
    Constant Field Values
  - LEVEL_STRINGS_SHORT
```
protected static final String[] LEVEL_STRINGS_SHORT
```
    Short strings for numeric log level. Use level as array index.
  - LEVEL_STRINGS
```
protected static final String[] LEVEL_STRINGS
```
    Long strings for numeric log level. Use level as array index.
- Method Detail
  - initialize
```
public abstract void initialize(String cat)
```
  - _log
```
protected abstract void _log(int level,
                             Object obj1)
```
    Log a message
    
    Parameters:
    
    level - One of DEBUG, INFO, WARN, ERROR, FATAL
    
    obj1 - The object to log. This is converted to a string.
  - _log
```
protected abstract void _log(int level,
                             Object obj1,
                             Throwable exception)
```
    Log a message
    
    Parameters:
    
    level - One of DEBUG, INFO, WARN, ERROR, FATAL
    
    obj1 - The object to log. This is converted to a string.
    
    exception - An exception to be logged
  - check
```
public abstract boolean check(int level)
```
    Check if a logger is enabled to log at the specified level This allows code to avoid building strings or evaluating functions in the arguments to log. An example: if (logger.check(XBLogger.INFO)) { logger.log(XBLogger.INFO, "Avoid concatenating " + " strings and evaluating " + functions()); }
    Parameters:
    
    level - One of DEBUG, INFO, WARN, ERROR, FATAL
  - log
```
public void log(int level,
                Object... objs)
```
    Log a message. Lazily appends Object parameters together. If the last parameter is a Throwable it is logged specially.
    
    Parameters:
    
    level - One of DEBUG, INFO, WARN, ERROR, FATAL
    
    objs - the objects to place in the message

Class XBLogger

Field Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

DEBUG

INFO

WARN

ERROR

FATAL

LEVEL_STRINGS_SHORT

LEVEL_STRINGS

Method Detail

initialize

_log

_log

check

log