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## BEA WebLogic Server 9.0 API Reference

## weblogic.logging
Class Loggable

    java.lang.Object
      weblogic.logging.Loggable

public class Loggable
extends Object

Loggable objects are used when there is a need to collect log entry data without actually logging the message until a later time. Type casting is weak for the log parameters provided when constructing. The user must ensure that the arguments associated with a particular log message are of the appropriate type and in the correct order.

It is therefore preferable to not explicitly create Loggable objects, rather they should be defined through the relevant message catalog file as follows:

      <?xml version="1.0" encoding="UTF-8"?>
      <!DOCTYPE message_catalog PUBLIC "weblogic-message-catalog-dtd" "http://www.bea.com/servers/wls600/msgcat.dtd">
      <message_catalog
         l10n_package="examples"
         i18n_package="examples"
         subsystem="LoggableExample"
         version="1.0"
         baseid="999000"
         endid="999999"
         loggables="true"
         >
         <logmessage
            messageid="999000"
            severity="info"
            method="logExample(String arg1)"
            >
            <messagebody>
               Test message with arg, {0}
            </messagebody>
            <messagedetail>
            </messagedetail>
            <cause>
            </cause>
            <action>
            </action>
         </logmessage>
      </message_catalog>

The above catalog defines the logExample(String) method plus a logExampleLoggable(String) method. The latter is created due to the presence of the `loggables="true"` setting for the `message_catalog` element. The logExample(String) method logs the message and returns the id of the message. The logExampleLoggable(String) method does not log the message, and returns the appropriate Loggable object for the message. Loggable objects are convenient for logging messages and using the same text in a Throwable. For example,

     import examples.LoggableExampleLogger;
     import weblogic.logging.Loggable;
     ...
     // some error detected
     Loggable l = LoggableExampleLogger.logExampleLoggable("whatever");
     l.log();  // this logs the message
     throw new Exception(l.getMessage()); // creates exception with same text as logged

  Copyright © 2005 BEA Systems, Inc. All Rights Reserved.

Constructor Summary
`Loggable(String id, Object[] args)` Creates an object that can be logged to the server log.

Method Summary
`String` | `getId()` Get the message id.
`String` | `getMessage()` Get the message in current locale with [subsytem:id] prefix.
`String` | `getMessage(Locale l)` Get the message in specified locale with [subsytem:id] prefix.
`String` | `getMessageText()` Get the message in current locale, no prefix.
`String` | `getMessageText(Locale l)` Get the message in specified locale, no prefix.
`String` | `log()` Log the message.

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

Constructor Detail

### Loggable

    public Loggable(String id,
                    Object[] args)

  Creates an object that can be logged to the server log.

Method Detail

### getId

    public String getId()

  Get the message id.

### getMessage

    public String getMessage()

  Get the message in current locale with [subsytem:id] prefix.

### getMessage

    public String getMessage(Locale l)

  Get the message in specified locale with [subsytem:id] prefix.

### getMessageText

    public String getMessageText()

  Get the message in current locale, no prefix.

### getMessageText

    public String getMessageText(Locale l)

  Get the message in specified locale, no prefix.

### log

    public String log()

  Log the message.

Overview | Package | Class | Use | Tree | Deprecated | Index | Help
| Documentation is available at http://e-docs.bea.com/wls/docs90 Copyright 2005 BEA Systems Inc.
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