org.springframework.batch.classify
Class BinaryExceptionClassifier

java.lang.Object
  org.springframework.batch.classify.SubclassClassifier<Throwable,Boolean>
      org.springframework.batch.classify.BinaryExceptionClassifier

All Implemented Interfaces:

Classifier<Throwable,Boolean>

public class BinaryExceptionClassifier
extends SubclassClassifier<Throwable,Boolean>

A Classifier for exceptions that has only two classes (true and false). Classifies objects according to their inheritance relation with the supplied types. If the object to be classified is one of the provided types, or is a subclass of one of the types, then the non-default value is returned (usually true).

Author:

Dave Syer

See Also:

SubclassClassifier

Constructor Summary

BinaryExceptionClassifier()
Create a binary exception classifier with the default value (false).

BinaryExceptionClassifier(boolean defaultValue)
Create a binary exception classifier with the provided default value.

BinaryExceptionClassifier(Collection<Class<? extends Throwable>> exceptionClasses)
Create a binary exception classifier with the default value false and value mapping true for the provided classes and their subclasses.

BinaryExceptionClassifier(Collection<Class<? extends Throwable>> exceptionClasses, boolean value)
Create a binary exception classifier with the provided classes and their subclasses.

Method Summary

void	setTypes(Collection<Class<? extends Throwable>> types) Set of Throwable class types to keys for the classifier.

Methods inherited from class org.springframework.batch.classify.SubclassClassifier

classify, getDefault, setDefaultValue, setTypeMap

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

BinaryExceptionClassifier

public BinaryExceptionClassifier(boolean defaultValue)

Create a binary exception classifier with the provided default value. All exceptions will classify as this value unless setTypes(Collection) is used to narrow the field.

Parameters:

defaultValue - defaults to false

BinaryExceptionClassifier

public BinaryExceptionClassifier()

Create a binary exception classifier with the default value (false). All exceptions will classify as false.

BinaryExceptionClassifier

public BinaryExceptionClassifier(Collection<Class<? extends Throwable>> exceptionClasses,
                                 boolean value)

Create a binary exception classifier with the provided classes and their subclasses. The mapped value for these exceptions will be the one provided (which will be the opposite of the default).

Parameters:

value -

BinaryExceptionClassifier

public BinaryExceptionClassifier(Collection<Class<? extends Throwable>> exceptionClasses)

Create a binary exception classifier with the default value false and value mapping true for the provided classes and their subclasses.

Method Detail

setTypes

public final void setTypes(Collection<Class<? extends Throwable>> types)

Set of Throwable class types to keys for the classifier. Any subclass of the type provided will be classified as of non-default type.

Parameters:

types - the types to classify as non-default