UserDataHelper (Apache Tomcat 7.0.109 API Documentation)

Apache Tomcat 7.0.109

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java.lang.Object
- org.apache.tomcat.util.log.UserDataHelper

```
public class UserDataHelper
extends Object
```
This helper class assists with the logging associated with invalid input data. A developer may want all instances of invalid input data logged to assist with debugging whereas in production it is likely to be desirable not to log anything for invalid data. The following settings may be used:
- NOTHING: Log nothing.
- DEBUG_ALL: Log all problems at DEBUG log level.
- INFO_THEN_DEBUG: Log first problem at INFO log level and any further issues in the following TBD (configurable) seconds at DEBUG level
- INFO_ALL: Log all problems at INFO log level.
By default, INFO_THEN_DEBUG is used with a suppression time of 24 hours. NOTE: This class is not completely thread-safe. When using INFO_THEN_DEBUG it is possible that several INFO messages will be logged before dropping to DEBUG.

- Nested Class Summary
  
  Nested Classes
  Modifier and Type Class and Description
  
  static class UserDataHelper.Mode
  Log mode for the next log message.
- Constructor Summary
  
  Constructors
  Constructor and Description
  
  UserDataHelper(Log log)
- Method Summary
  
  Methods
  Modifier and Type Method and Description
  
  UserDataHelper.Mode getNextMode()
  Returns log mode for the next log message, or null if the message should not be logged.
  - Methods inherited from class java.lang.Object
    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - UserDataHelper
```
public UserDataHelper(Log log)
```
- Method Detail
  - getNextMode
```
public UserDataHelper.Mode getNextMode()
```
    Returns log mode for the next log message, or null if the message should not be logged.
    If INFO_THEN_DEBUG configuration option is enabled, this method might change internal state of this object.
    
    Returns:
    Log mode, or null

Apache Tomcat 7.0.109

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