org.carrot2.util.attribute
Class AttributeBinder.AttributeTransformerFromString

java.lang.Object
  org.carrot2.util.attribute.AttributeBinder.AttributeTransformerFromString

All Implemented Interfaces:

AttributeBinder.IAttributeTransformer

Enclosing class:

AttributeBinder

public static class AttributeBinder.AttributeTransformerFromString
extends Object
implements AttributeBinder.IAttributeTransformer

Transforms String attribute values to the types required by the target field by:

1. Leaving non-String typed values unchanged.
2. Looking for a static valueOf(String) in the target type and using it for conversion.
3. If the method is not available, trying to load a class named as the value of the attribute, so that this class can be further coerced to the class instance.
4. If the class cannot be loaded, leaving the the value unchanged.

Field Summary

static AttributeBinder.AttributeTransformerFromString

INSTANCE Shared instance of the transformer.

Method Summary

Object

transform(Object value, String key, Field field, Class<? extends Annotation> bindingDirectionAnnotation)

Methods inherited from class java.lang.Object

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

Field Detail

INSTANCE

public static final AttributeBinder.AttributeTransformerFromString INSTANCE

Shared instance of the transformer.

Method Detail

transform

public Object transform(Object value,
                        String key,
                        Field field,
                        Class<? extends Annotation> bindingDirectionAnnotation)

Specified by:

transform in interface AttributeBinder.IAttributeTransformer