Adopt `RelationalParameters` and `RelationalParameter` to reflect the actual parameter type when using generics.

Closes #1691

spring-data-jdbc/src/main/java/org/springframework/data/jdbc/repository/query/JdbcQueryMethod.java

@@ -32,6 +32,8 @@ import org.springframework.data.relational.repository.query.RelationalParameters
 import org.springframework.data.relational.repository.query.SimpleRelationalEntityMetadata;
 import org.springframework.data.repository.core.NamedQueries;
 import org.springframework.data.repository.core.RepositoryMetadata;
+import org.springframework.data.repository.query.Parameters;
+import org.springframework.data.repository.query.ParametersSource;
 import org.springframework.data.repository.query.QueryMethod;
 import org.springframework.jdbc.core.ResultSetExtractor;
 import org.springframework.jdbc.core.RowMapper;
@@ -71,8 +73,8 @@ public class JdbcQueryMethod extends QueryMethod {
 	}
 
 	@Override
-	protected RelationalParameters createParameters(Method method) {
-		return new RelationalParameters(method);
+	protected Parameters<?, ?> createParameters(ParametersSource parametersSource) {
+		return new RelationalParameters(parametersSource);
 	}
 
 	@Override

spring-data-r2dbc/src/main/java/org/springframework/data/r2dbc/repository/query/R2dbcQueryMethod.java

@@ -38,10 +38,11 @@ import org.springframework.data.relational.repository.query.RelationalParameters
 import org.springframework.data.relational.repository.query.SimpleRelationalEntityMetadata;
 import org.springframework.data.repository.core.RepositoryMetadata;
 import org.springframework.data.repository.query.Parameter;
+import org.springframework.data.repository.query.ParametersSource;
 import org.springframework.data.repository.query.QueryMethod;
 import org.springframework.data.repository.util.ReactiveWrapperConverters;
-import org.springframework.data.util.ReactiveWrappers;
 import org.springframework.data.util.Lazy;
+import org.springframework.data.util.ReactiveWrappers;
 import org.springframework.data.util.ReflectionUtils;
 import org.springframework.data.util.TypeInformation;
 import org.springframework.lang.Nullable;
@@ -122,12 +123,9 @@ public class R2dbcQueryMethod extends QueryMethod {
 		this.lock = Optional.ofNullable(AnnotatedElementUtils.findMergedAnnotation(method, Lock.class));
 	}
 
-	/* (non-Javadoc)
-	 * @see org.springframework.data.repository.query.QueryMethod#createParameters(java.lang.reflect.Method)
-	 */
 	@Override
-	protected RelationalParameters createParameters(Method method) {
-		return new RelationalParameters(method);
+	protected RelationalParameters createParameters(ParametersSource parametersSource) {
+		return new RelationalParameters(parametersSource);
 	}
 
 	/* (non-Javadoc)

spring-data-relational/src/main/java/org/springframework/data/relational/repository/query/RelationalParameters.java

@@ -15,7 +15,6 @@
  */
 package org.springframework.data.relational.repository.query;
 
-import java.lang.reflect.Method;
 import java.util.List;
 
 import org.springframework.core.MethodParameter;
@@ -23,6 +22,7 @@ import org.springframework.core.ResolvableType;
 import org.springframework.data.relational.repository.query.RelationalParameters.RelationalParameter;
 import org.springframework.data.repository.query.Parameter;
 import org.springframework.data.repository.query.Parameters;
+import org.springframework.data.repository.query.ParametersSource;
 import org.springframework.data.util.TypeInformation;
 
 /**
@@ -33,23 +33,19 @@ import org.springframework.data.util.TypeInformation;
 public class RelationalParameters extends Parameters<RelationalParameters, RelationalParameter> {
 
 	/**
-	 * Creates a new {@link RelationalParameters} instance from the given {@link Method}.
+	 * Creates a new {@link RelationalParameters} instance from the given {@link ParametersSource}.
 	 *
-	 * @param method must not be {@literal null}.
+	 * @param parametersSource must not be {@literal null}.
 	 */
-	public RelationalParameters(Method method) {
-		super(method);
+	public RelationalParameters(ParametersSource parametersSource) {
+		super(parametersSource,
+				methodParameter -> new RelationalParameter(methodParameter, parametersSource.getDomainTypeInformation()));
 	}
 
 	private RelationalParameters(List<RelationalParameter> parameters) {
 		super(parameters);
 	}
 
-	@Override
-	protected RelationalParameter createParameter(MethodParameter parameter) {
-		return new RelationalParameter(parameter);
-	}
-
 	@Override
 	protected RelationalParameters createFrom(List<RelationalParameter> parameters) {
 		return new RelationalParameters(parameters);
@@ -70,8 +66,8 @@ public class RelationalParameters extends Parameters<RelationalParameters, Relat
 		 *
 		 * @param parameter must not be {@literal null}.
 		 */
-		RelationalParameter(MethodParameter parameter) {
-			super(parameter);
+		RelationalParameter(MethodParameter parameter, TypeInformation<?> domainType) {
+			super(parameter, domainType);
 			this.parameter = parameter;
 		}