org.databene.benerator.wrapper
Class NullStartingGenerator<E>

java.lang.Object
  extended by org.databene.benerator.util.AbstractGenerator<P>
      extended by org.databene.benerator.wrapper.GeneratorWrapper<E,E>
          extended by org.databene.benerator.wrapper.GeneratorProxy<E>
              extended by org.databene.benerator.wrapper.NullStartingGenerator<E>
All Implemented Interfaces:
java.io.Closeable, Generator<E>, org.databene.commons.Resettable, org.databene.commons.ThreadAware

public class NullStartingGenerator<E>
extends GeneratorProxy<E>

Generator implementation which wraps a source Generator but generates a null value before forwarding the products of the source.

Created: 04.07.2011 13:18:03

Since:
0.7.0
Author:
Volker Bergmann

Field Summary
 
Fields inherited from class org.databene.benerator.wrapper.GeneratorProxy
generatedType
 
Fields inherited from class org.databene.benerator.util.AbstractGenerator
context, logger, state
 
Constructor Summary
NullStartingGenerator(Generator<E> source)
           
 
Method Summary
 ProductWrapper<E> generate(ProductWrapper<E> wrapper)
          Returns an instance of the generic type E, using the ProductWrapper instance provided as argument.
 void init(GeneratorContext context)
           
 void reset()
           
 
Methods inherited from class org.databene.benerator.wrapper.GeneratorProxy
getGeneratedType, toString
 
Methods inherited from class org.databene.benerator.wrapper.GeneratorWrapper
close, equals, generateFromSource, getSource, getSourceWrapper, hashCode, isParallelizable, isThreadSafe, setSource
 
Methods inherited from class org.databene.benerator.util.AbstractGenerator
assertInitialized, assertNotInitialized, getResultWrapper, wasInitialized
 
Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait
 

Constructor Detail

NullStartingGenerator

public NullStartingGenerator(Generator<E> source)
Method Detail

init

public void init(GeneratorContext context)
          throws InvalidGeneratorSetupException
Specified by:
init in interface Generator<E>
Overrides:
init in class GeneratorWrapper<E,E>
Throws:
InvalidGeneratorSetupException

generate

public ProductWrapper<E> generate(ProductWrapper<E> wrapper)
Description copied from interface: Generator
Returns an instance of the generic type E, using the ProductWrapper instance provided as argument. The wrapper may wrap a null value as a regular generator product. If the generator is not available (any more), it returns null instead of the ProductWrapper instance.

Specified by:
generate in interface Generator<E>
Overrides:
generate in class GeneratorProxy<E>

reset

public void reset()
Specified by:
reset in interface org.databene.commons.Resettable
Overrides:
reset in class GeneratorWrapper<E,E>


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