DATACMNS-61 - Fixed Parameters lookup in QueryMethod.

spring-data-commons-core/src/main/java/org/springframework/data/repository/query/QueryMethod.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2008-2010 the original author or authors.
+ * Copyright 2008-2011 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -73,15 +73,17 @@ public class QueryMethod {
 		}
 
 		this.method = method;
-		this.parameters = getParameters();
+		this.parameters = createParameters(method);
 		this.metadata = metadata;
+		
+		Assert.notNull(this.parameters);
 	}
 	
 	/**
 	 * Creates a {@link Parameters} instance.
 	 * 
 	 * @param method
-	 * @return
+	 * @return must not return {@literal null}. 
 	 */
 	protected Parameters createParameters(Method method) {
 		return new Parameters(method);

spring-data-commons-core/src/test/java/org/springframework/data/repository/query/QueryMethodUnitTest.java

@@ -41,8 +41,16 @@ public class QueryMethodUnitTest {
 		Method method = SampleRepository.class.getMethod("pagingMethodWithInvalidReturnType", Pageable.class);
 		new QueryMethod(method, metadata);
 	}
+	
+	@Test
+	public void setsUpSimpleQueryMethodCorrectly() throws NoSuchMethodException, SecurityException {
+		Method method = SampleRepository.class.getMethod("findByUsername", String.class);
+		new QueryMethod(method, metadata);
+	}
 
 	interface SampleRepository {
 		String pagingMethodWithInvalidReturnType(Pageable pageable);
+		
+		String findByUsername(String username);
 	}
 }