enum conversion for filter.

Author: fxrobin

src/main/java/fr/fxjavadevblog/aid/api/genre/GenreConverterProvider.java

@@ -7,6 +7,7 @@
 import javax.ws.rs.ext.ParamConverterProvider;
 import javax.ws.rs.ext.Provider;
 
+import org.apache.commons.beanutils.ConvertUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -23,11 +24,12 @@
 public class GenreConverterProvider implements ParamConverterProvider
 {
     private static final Logger log = LoggerFactory.getLogger(GenreConverterProvider.class);
-    private final ParamConverter<Genre> converter = GenericEnumConverter.of(Genre.class);
+    private static final GenericEnumConverter<Genre> converter = GenericEnumConverter.of(Genre.class);
 
     static
     {
-        log.debug("Registering converter provider for Genre");
+        log.debug("Registering converter provider for Genre (JAX-RS + ConvertUtils");
+        ConvertUtils.register(converter, Genre.class);
     }
 
     @SuppressWarnings("unchecked")

src/main/java/fr/fxjavadevblog/aid/utils/commons/StartupApplication.java

@@ -18,6 +18,7 @@
 @Slf4j
 public class StartupApplication {
 
+	// embedding h2 webserver (web client) for dev purpose only.
 	private Server h2Server;
 
 	@PostConstruct

src/main/java/fr/fxjavadevblog/aid/utils/jaxrs/converters/GenericEnumConverter.java

@@ -5,6 +5,7 @@
 
 import javax.ws.rs.ext.ParamConverter;
 
+import org.apache.commons.beanutils.Converter;
 import org.apache.commons.collections4.BidiMap;
 import org.apache.commons.collections4.bidimap.DualHashBidiMap;
 import org.slf4j.Logger;
@@ -21,7 +22,7 @@
  * @param <T>
  */
 
-public class GenericEnumConverter<T extends Enum<T>> implements ParamConverter<T>
+public class GenericEnumConverter<T extends Enum<T>> implements ParamConverter<T>, Converter
 {
     private static final Logger log = LoggerFactory.getLogger(GenericEnumConverter.class);
 
@@ -41,7 +42,7 @@ public class GenericEnumConverter<T extends Enum<T>> implements ParamConverter<T
      * @return
      *    a generic converter used by JAX-RS.
      */
-    public static <T extends Enum<T>> ParamConverter<T> of(Class<T> t)
+    public static <T extends Enum<T>> GenericEnumConverter<T> of(Class<T> t)
     {
         return new GenericEnumConverter<>(t);
     }
@@ -74,7 +75,7 @@ private GenericEnumConverter(Class<T> t)
     public T fromString(String value)
     {	
         T returnedValue = biMap.inverseBidiMap().get(value); 
-        log.debug("Converting String \"{}\" to {}.{}", value, returnedValue.getClass(), returnedValue);
+        log.debug("Converting String \"{}\" to {}", value, returnedValue);
         return returnedValue;
     }
 
@@ -89,4 +90,10 @@ public String toString(T t)
         log.debug("Converting Enum {}.{} to String \"{}\"", t.getClass(), t, returnedValue);
         return returnedValue;
     }
+
+	@SuppressWarnings("unchecked")
+	@Override
+	public <U> U convert(Class<U> type, Object value) {
+		return (U) fromString(value.toString());
+	}
 }

src/main/java/fr/fxjavadevblog/aid/utils/jaxrs/filtering/Filtering.java

@@ -21,6 +21,7 @@
 import org.apache.commons.collections4.CollectionUtils;
 
 import fr.fxjavadevblog.aid.api.exceptions.ApiException;
+import fr.fxjavadevblog.aid.utils.jaxrs.converters.GenericEnumConverter;
 import lombok.AllArgsConstructor;
 import lombok.Getter;
 import lombok.NoArgsConstructor;
@@ -149,12 +150,17 @@ private Filter createFilter(String paramName, String paramValue) throws NoSuchFi
 			String operationValue = matcher.group(1);
 			operation = operationAliases.get(operationValue);
 		    value = matcher.group(3);
+		    
+		    
 		    if (operation == Operation.LIKE)
 		    {
 		    	value = "%"+value+"%";
 		    }
 		}
 
+		// values mapped to enum are converted throw a specific converter
+		// @see GenericEnumConverter and ConverterBootstrap.
+		// otherwise the value is converted through standard converters.
 		Object convertedValue = ConvertUtils.convert(value, targetType);
 
 		return Filter.builder()