Debug (Storm 2.7.1 API)

java.lang.Object
- org.apache.storm.trident.operation.BaseOperation
- - org.apache.storm.trident.operation.BaseFilter
  - - org.apache.storm.trident.operation.builtin.Debug

All Implemented Interfaces:

Serializable, EachOperation, Filter, Operation
```
public class Debug
extends BaseFilter
```
Filter for debugging purposes. The `isKeep()` method simply prints the tuple to `System.out` and returns `true`.

See Also:

Serialized Form

- Constructor Summary
  
  Constructors
  Constructor Description
  
  Debug()
  
  Debug(boolean useLogger)
  
  Debug(String name)
  Creates a `Debug` filter with a string identifier.
- Method Summary
  
  All Methods Instance Methods Concrete Methods
  Modifier and Type Method Description
  
  boolean isKeep(TridentTuple tuple)
  Determines if a tuple should be filtered out of a stream.
  - Methods inherited from class org.apache.storm.trident.operation.BaseOperation
    cleanup, prepare
  - Methods inherited from class java.lang.Object
    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
  - Methods inherited from interface org.apache.storm.trident.operation.Operation
    cleanup, prepare

- Constructor Detail
  - Debug
```
public Debug()
```
  - Debug
```
public Debug(boolean useLogger)
```
  - Debug
```
public Debug(String name)
```
    Creates a `Debug` filter with a string identifier.
- Method Detail
  - isKeep
```
public boolean isKeep(TridentTuple tuple)
```
    Description copied from interface: Filter
    
    Determines if a tuple should be filtered out of a stream.
    
    Parameters:
    
    tuple - the tuple being evaluated
    
    Returns:
    
    `false` to drop the tuple, `true` to keep the tuple