DATAMONGO-1229 - Fixed application of ignore case flag on nested properties.

Previously we tried to apply the ignore case settings found in the PartTree to the root PropertyPath we handle in MongoQueryCreator.create(). This is now changed to work on the leaf property of the PropertyPath.

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/repository/query/MongoQueryCreator.java

@@ -28,6 +28,7 @@ import org.springframework.data.geo.Distance;
 import org.springframework.data.geo.Metrics;
 import org.springframework.data.geo.Point;
 import org.springframework.data.geo.Shape;
+import org.springframework.data.mapping.PropertyPath;
 import org.springframework.data.mapping.context.MappingContext;
 import org.springframework.data.mapping.context.PersistentPropertyPath;
 import org.springframework.data.mongodb.core.mapping.MongoPersistentProperty;
@@ -263,19 +264,23 @@ class MongoQueryCreator extends AbstractQueryCreator<Query, Criteria> {
 	private Criteria createLikeRegexCriteriaOrThrow(Part part, MongoPersistentProperty property, Criteria criteria,
 			PotentiallyConvertingIterator parameters, boolean shouldNegateExpression) {
 
+		PropertyPath path = part.getProperty().getLeafProperty();
+
 		switch (part.shouldIgnoreCase()) {
 
 			case ALWAYS:
-				if (part.getProperty().getType() != String.class) {
-					throw new IllegalArgumentException(String.format("part %s must be of type String but was %s",
-							part.getProperty(), part.getType()));
+				if (path.getType() != String.class) {
+					throw new IllegalArgumentException(
+							String.format("Part %s must be of type String but was %s", path, path.getType()));
 				}
 				// fall-through
 
 			case WHEN_POSSIBLE:
+
 				if (shouldNegateExpression) {
 					criteria = criteria.not();
 				}
+
 				return addAppropriateLikeRegexTo(criteria, part, parameters.nextConverted(property).toString());
 
 			case NEVER:
@@ -352,8 +357,8 @@ class MongoQueryCreator extends AbstractQueryCreator<Query, Criteria> {
 			return (T) parameter;
 		}
 
-		throw new IllegalArgumentException(String.format("Expected parameter type of %s but got %s!", type,
-				parameter.getClass()));
+		throw new IllegalArgumentException(
+				String.format("Expected parameter type of %s but got %s!", type, parameter.getClass()));
 	}
 
 	private Object[] nextAsArray(PotentiallyConvertingIterator iterator, MongoPersistentProperty property) {

spring-data-mongodb/src/test/java/org/springframework/data/mongodb/repository/query/MongoQueryCreatorUnitTests.java

@@ -456,6 +456,18 @@ public class MongoQueryCreatorUnitTests {
 		assertThat(query, is(query(where("location").near(point).maxDistance(1.0))));
 	}
 
+	/**
+	 * @see DATAMONGO-1229
+	 */
+	@Test
+	public void appliesIgnoreCaseToLeafProperty() {
+
+		PartTree tree = new PartTree("findByAddressStreetIgnoreCase", User.class);
+		ConvertingParameterAccessor accessor = getAccessor(converter, "Street");
+
+		assertThat(new MongoQueryCreator(tree, accessor, context).createQuery(), is(notNullValue()));
+	}
+
 	interface PersonRepository extends Repository<Person, Long> {
 
 		List<Person> findByLocationNearAndFirstname(Point location, Distance maxDistance, String firstname);
@@ -468,5 +480,12 @@ public class MongoQueryCreatorUnitTests {
 		@DBRef User creator;
 
 		List<String> emailAddresses;
+
+		Address address;
+	}
+
+	class Address {
+
+		String street;
 	}
 }