HSEARCH-3222 Replace FromIndexFieldValueConverter#getConvertedType() …

…by #isConvertedTypeAssignableTo()

engine/src/main/java/org/hibernate/search/engine/backend/document/converter/FromIndexFieldValueConverter.java

@@ -15,9 +15,15 @@
 public interface FromIndexFieldValueConverter<F, V> {
 
 	/**
-	 * @return The type of the converted value.
+	 * Check whether converted values can be assigned to the given type.
+	 * <p>
+	 * This method is generally implemented like this:
+	 * {@code return superTypeCandidate.isAssignableFrom( TheConvertedType.class )}.
+	 * @param superTypeCandidate A candidate type for assignment of converted values.
+	 * @return {@code true} if the converted type {@link V} is a subtype of {@code superTypeCandidate},
+	 * {@code false} otherwise.
 	 */
-	Class<?> getConvertedType();
+	boolean isConvertedTypeAssignableTo(Class<?> superTypeCandidate);
 
 	/**
 	 * @param value The index field value to convert.

engine/src/main/java/org/hibernate/search/engine/backend/document/converter/spi/PassThroughFromIndexFieldValueConverter.java

@@ -22,8 +22,7 @@ public F convert(F value) {
 	}
 
 	@Override
-	public Class<?> getConvertedType() {
-		return fieldType;
+	public boolean isConvertedTypeAssignableTo(Class<?> superTypeCandidate) {
+		return superTypeCandidate.isAssignableFrom( fieldType );
 	}
-
 }

engine/src/main/java/org/hibernate/search/engine/backend/document/spi/UserIndexFieldConverter.java

@@ -84,6 +84,6 @@ public boolean isProjectionCompatibleWith(Class<?> projectionType) {
 			return projectionType.isAssignableFrom( indexFieldType );
 		}
 
-		return projectionType.isAssignableFrom( projectionFromIndexConverter.getConvertedType() );
+		return projectionFromIndexConverter.isConvertedTypeAssignableTo( projectionType );
 	}
 }

integrationtest/backend/tck/src/main/java/org/hibernate/search/integrationtest/backend/tck/util/ValueWrapper.java

@@ -37,8 +37,8 @@ public static <T> FromIndexFieldValueConverter<T, ValueWrapper<T>> fromIndexFiel
 		return new FromIndexFieldValueConverter<T, ValueWrapper<T>>() {
 
 			@Override
-			public Class<?> getConvertedType() {
-				return ValueWrapper.class;
+			public boolean isConvertedTypeAssignableTo(Class<?> superTypeCandidate) {
+				return superTypeCandidate.isAssignableFrom( ValueWrapper.class );
 			}
 
 			@Override

integrationtest/showcase/library/src/main/java/org/hibernate/search/integrationtest/showcase/library/bridge/ISBNBridge.java

@@ -43,8 +43,8 @@ public boolean isCompatibleWith(ValueBridge<?, ?> other) {
 	private static class ISBNFromIndexFieldValueConverter implements FromIndexFieldValueConverter<String, ISBN> {
 
 		@Override
-		public Class<ISBN> getConvertedType() {
-			return ISBN.class;
+		public boolean isConvertedTypeAssignableTo(Class<?> superTypeCandidate) {
+			return superTypeCandidate.isAssignableFrom( ISBN.class );
 		}
 
 		@Override

mapper/pojo/src/main/java/org/hibernate/search/mapper/pojo/bridge/builtin/impl/DefaultEnumValueBridge.java

@@ -50,8 +50,8 @@ public boolean isCompatibleWith(ValueBridge<?, ?> other) {
 	private class DefaultEnumFromIndexFieldValueConverter implements FromIndexFieldValueConverter<String, V> {
 
 		@Override
-		public Class<?> getConvertedType() {
-			return enumType;
+		public boolean isConvertedTypeAssignableTo(Class<?> superTypeCandidate) {
+			return superTypeCandidate.isAssignableFrom( enumType );
 		}
 
 		@Override