org.omnaest.utils.beans.adapter.source
Annotation Type DefaultValue

@Documented
@Retention(value=RUNTIME)
@Target(value=METHOD)
public @interface DefaultValue

The DefaultValue Annotation allows to declare a value which is used as default value, if a given or returned value of a method is null.

The values are specified as String and will be converted to any type which has a single String parameter constructor or a valueOf method like Double.valueOf(String) .

Example:

 protected interface ExampleInterface
 {
   @DefaultValue(value = "defaultValueSet")
   public void setFieldString( String value );
   
   @DefaultValue(value = "defaultValueGet")
   public String getFieldString();
   
   @DefaultValue(value = "1.23")
   public void setFieldDouble( Double value );
   
   @DefaultValue(value = "3.45")
   public Double getFieldDouble();
 }
 

Author:

Omnaest

See Also:

defaultValueConverterTypes()

Required Element Summary

String

value

Optional Element Summary

Class<? extends ElementConverter<String,?>>[]

defaultValueConverterTypes ElementConverter types specified here can be used to transform a default value String into any other result object.

Element Detail

value

public abstract String value

defaultValueConverterTypes

public abstract Class<? extends ElementConverter<String,?>>[] defaultValueConverterTypes

ElementConverter types specified here can be used to transform a default value String into any other result object. This can be used to create more complex default value Objects. If multiple ElementConverter types are specified, they are used in ascending index position order (from left to right).

Returns:

Default:

{}