Package org.springframework.classify

Class BackToBackPatternClassifier<C,T>

java.lang.Object
org.springframework.classify.BackToBackPatternClassifier<C,T>
Type Parameters:
C - the type of thing to classify
T - the output of the classifier
All Implemented Interfaces:
Serializable, Classifier<C,T>
public class BackToBackPatternClassifier<C,T> extends Object implements Classifier<C,T>
A special purpose Classifier with easy configuration options for mapping from one arbitrary type of object to another via a pattern matcher.
Author:
Dave Syer
See Also:

  • Constructor Details

    • BackToBackPatternClassifier

      public BackToBackPatternClassifier()
      Default constructor, provided as a convenience for people using setter injection.

    • BackToBackPatternClassifier

      public BackToBackPatternClassifier(Classifier<C,String> router, Classifier<String,T> matcher)
      Set up a classifier with input to the router and output from the matcher.
      Parameters:
      router - see setRouterDelegate(Object)
      matcher - see setMatcherMap(Map)

  • Method Details

    • setMatcherMap

      public void setMatcherMap(Map<String,T> map)
      A convenience method for creating a pattern matching classifier for the matcher component.
      Parameters:
      map - maps pattern keys with wildcards to output values

    • setRouterDelegate

      public void setRouterDelegate(Object delegate)
      A convenience method of creating a router classifier based on a plain old Java Object. The object provided must have precisely one public method that either has the @Classifier annotation or accepts a single argument and outputs a String. This will be used to create an input classifier for the router component.
      Parameters:
      delegate - the delegate object used to create a router classifier

    • classify

      public T classify(C classifiable)
      Classify the input and map to a String, then take that and put it into a pattern matcher to match to an output value.
      Specified by:
      classify in interface Classifier<C,T>
      Parameters:
      classifiable - the input object. Can be null.
      Returns:
      an object. Can be null, but implementations should declare if this is the case.