LogSource (Apache Commons Logging 1.2 API)

java.lang.Object
- org.apache.commons.logging.LogSource

Deprecated.
Use LogFactory instead - The default factory implementation performs exactly the same algorithm as this class did
```
public class LogSource
extends Object
```
Factory for creating Log instances. Applications should call the makeNewLogInstance() method to instantiate new instances of the configured Log implementation class.
By default, calling getInstance() will use the following algorithm:
- If Log4J is available, return an instance of org.apache.commons.logging.impl.Log4JLogger.
- If JDK 1.4 or later is available, return an instance of org.apache.commons.logging.impl.Jdk14Logger.
- Otherwise, return an instance of org.apache.commons.logging.impl.NoOpLog.
You can change the default behavior in one of two ways:
- On the startup command line, set the system property org.apache.commons.logging.log to the name of the org.apache.commons.logging.Log implementation class you want to use.
- At runtime, call LogSource.setLogImplementation().
Version:

$Id: LogSource.java 1432675 2013-01-13 17:53:30Z tn $

Field Summary

Fields
Modifier and Type	Field and Description
`protected static boolean`	`jdk14IsAvailable` Deprecated. Is JDK 1.4 logging available
`protected static boolean`	`log4jIsAvailable` Deprecated. Is log4j available (in the current classpath)
`protected static Constructor`	`logImplctor` Deprecated. Constructor for current log class
`protected static Hashtable`	`logs` Deprecated.

Method Summary

Methods
Modifier and Type	Method and Description
`static Log`	`getInstance(Class clazz)` Deprecated. Get a `Log` instance by class.
`static Log`	`getInstance(String name)` Deprecated. Get a `Log` instance by class name.
`static String[]`	`getLogNames()` Deprecated. Returns a `String` array containing the names of all logs known to me.
`static Log`	`makeNewLogInstance(String name)` Deprecated. Create a new `Log` implementation, based on the given name.
`static void`	`setLogImplementation(Class logclass)` Deprecated. Set the log implementation/log implementation factory by class.
`static void`	`setLogImplementation(String classname)` Deprecated. Set the log implementation/log implementation factory by the name of the class.

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

- Field Detail
  - logs
```
protected static Hashtable logs
```
    Deprecated.
  - log4jIsAvailable
```
protected static boolean log4jIsAvailable
```
    Deprecated.
    
    Is log4j available (in the current classpath)
  - jdk14IsAvailable
```
protected static boolean jdk14IsAvailable
```
    Deprecated.
    
    Is JDK 1.4 logging available
  - logImplctor
```
protected static Constructor logImplctor
```
    Deprecated.
    
    Constructor for current log class
- Method Detail
  - setLogImplementation
```
public static void setLogImplementation(String classname)
                                 throws LinkageError,
                                        NoSuchMethodException,
                                        SecurityException,
                                        ClassNotFoundException
```
    Deprecated.
    
    Set the log implementation/log implementation factory by the name of the class. The given class must implement Log, and provide a constructor that takes a single String argument (containing the name of the log).
    
    Throws:
    
    LinkageError
    
    NoSuchMethodException
    
    SecurityException
    
    ClassNotFoundException
  - setLogImplementation
```
public static void setLogImplementation(Class logclass)
                                 throws LinkageError,
                                        ExceptionInInitializerError,
                                        NoSuchMethodException,
                                        SecurityException
```
    Deprecated.
    
    Set the log implementation/log implementation factory by class. The given class must implement Log, and provide a constructor that takes a single String argument (containing the name of the log).
    
    Throws:
    
    LinkageError
    
    ExceptionInInitializerError
    
    NoSuchMethodException
    
    SecurityException
  - getInstance
```
public static Log getInstance(String name)
```
    Deprecated.
    
    Get a Log instance by class name.
  - getInstance
```
public static Log getInstance(Class clazz)
```
    Deprecated.
    
    Get a Log instance by class.
  - makeNewLogInstance
```
public static Log makeNewLogInstance(String name)
```
    Deprecated.
    
    Create a new Log implementation, based on the given name.
    The specific Log implementation returned is determined by the value of the org.apache.commons.logging.log property. The value of org.apache.commons.logging.log may be set to the fully specified name of a class that implements the Log interface. This class must also have a public constructor that takes a single String argument (containing the name of the Log to be constructed.
    When org.apache.commons.logging.log is not set, or when no corresponding class can be found, this method will return a Log4JLogger if the log4j Logger class is available in the LogSource's classpath, or a Jdk14Logger if we are on a JDK 1.4 or later system, or NoOpLog if neither of the above conditions is true.
    
    Parameters:
    name - the log name (or category)
  - getLogNames
```
public static String[] getLogNames()
```
    Deprecated.
    
    Returns a String array containing the names of all logs known to me.

Class LogSource

Field Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

logs

log4jIsAvailable

jdk14IsAvailable

logImplctor

Method Detail

setLogImplementation

setLogImplementation

getInstance

getInstance

makeNewLogInstance

getLogNames