```
@Target(METHOD)
@Retention(CLASS)
public @interface Condition
```
This annotation marks a method as a presence check method to check check for presence in beans.
By default bean properties are checked against null or using a presence check method in the source bean. If a presence check method is available then it will be used instead.
Presence check methods have to return boolean. The following parameters are accepted for the presence check methods:
- The parameter with the value of the source property. e.g. the value given by calling getName() for the name property of the source bean
- The mapping source parameter
- @Context parameter
Note: The usage of this annotation is mandatory for a method to be considered as a presence check method.
```
 public class PresenceCheckUtils {

   @Condition
   public static boolean isNotEmpty(String value) {
      return value != null && !value.isEmpty();
   }
 }

 @Mapper(uses = PresenceCheckUtils.class)
 public interface MovieMapper {

     MovieDto map(Movie movie);
 }
 
```
The following implementation of MovieMapper will be generated:
```
 
 public class MovieMapperImpl implements MovieMapper {

     @Override
     public MovieDto map(Movie movie) {
         if ( movie == null ) {
             return null;
         }

         MovieDto movieDto = new MovieDto();

         if ( PresenceCheckUtils.isNotEmpty( movie.getTitle() ) ) {
             movieDto.setTitle( movie.getTitle() );
         }

         return movieDto;
     }
 }
 
 
```
Since:

1.5

Author:

Filip Hrisafov

Annotation Type Condition