Consider enclosing class for dynamic projection parameter detection.

We now consider the enclosing class to determine correct generic typing.

Closes #3020

src/main/java/org/springframework/data/repository/query/Parameter.java

@@ -260,7 +260,7 @@ public class Parameter {
 			throw new IllegalArgumentException("Parameter is not associated with any method");
 		}
 
-		var returnType = TypeInformation.fromReturnTypeOf(method);
+		var returnType = TypeInformation.fromReturnTypeOf(method, parameter.getContainingClass());
 		var unwrapped = QueryExecutionConverters.unwrapWrapperTypes(returnType);
 		var reactiveUnwrapped = ReactiveWrapperConverters.unwrapWrapperTypes(unwrapped);
 

src/main/java/org/springframework/data/web/querydsl/QuerydslPredicateArgumentResolverSupport.java

@@ -146,7 +146,7 @@ public abstract class QuerydslPredicateArgumentResolverSupport {
 			throw new IllegalArgumentException("Method parameter is not backed by a method");
 		}
 
-		return detectDomainType(TypeInformation.fromReturnTypeOf(method));
+		return detectDomainType(TypeInformation.fromReturnTypeOf(method, parameter.getContainingClass()));
 	}
 
 	private static TypeInformation<?> detectDomainType(TypeInformation<?> source) {

src/test/java/org/springframework/data/repository/query/ParameterUnitTests.java

@@ -23,10 +23,10 @@ import java.util.Optional;
 import java.util.function.Function;
 import java.util.stream.Stream;
 
-import org.jetbrains.annotations.NotNull;
 import org.junit.jupiter.api.DynamicTest;
 import org.junit.jupiter.api.Test;
 import org.junit.jupiter.api.TestFactory;
+
 import org.springframework.core.MethodParameter;
 import org.springframework.data.repository.query.ParametersUnitTests.User;
 import org.springframework.data.util.TypeInformation;
@@ -85,7 +85,6 @@ class ParameterUnitTests {
 		assertThat(parameter.isDynamicProjectionParameter()).isFalse();
 	}
 
-	@NotNull
 	private MethodParameter getMethodParameter(String methodName) throws NoSuchMethodException {
 		return new MethodParameter(this.getClass().getDeclaredMethod(methodName, Class.class), 0);
 	}
@@ -117,4 +116,5 @@ class ParameterUnitTests {
 	<T> T atParamOnClass(@Param("type") Class<T> type) {
 		return null;
 	}
+
 }

src/test/java/org/springframework/data/repository/query/ParametersUnitTests.java

@@ -159,6 +159,16 @@ class ParametersUnitTests {
 		assertThat(parameters.getParameter(2).isDynamicProjectionParameter()).isFalse();
 	}
 
+	@Test // GH-3020
+	void detectsDynamicParametrizedProjectionParameter() throws Exception {
+
+		var method = ParametrizedRepository.class.getMethod("dynamicBind", Class.class);
+		var parameters = new DefaultParameters(
+				ParametersSource.of(new DefaultRepositoryMetadata(ParametrizedRepository.class), method));
+
+		assertThat(parameters.getParameter(0).isDynamicProjectionParameter()).isTrue();
+	}
+
 	@Test // DATACMNS-863
 	void unwrapsOptionals() throws Exception {
 
@@ -272,4 +282,12 @@ class ParametersUnitTests {
 
 	interface TypedInterface extends Intermediate<User, Long> {}
 
+	interface GenericRepository<T, ID> extends Repository<T, ID> {
+		<P extends Projection<T>> Optional<P> dynamicBind(Class<P> type);
+	}
+
+	interface ParametrizedRepository extends GenericRepository<User, Long> {}
+
+	interface Projection<T> {}
+
 }