DATADOC-286 - Added support for GreaterThanEqual and LessThanEqual.

Using those keywords provided by Spring Data Commons will cause $gte and $lte criterias to be created.

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

@@ -148,8 +148,12 @@ class MongoQueryCreator extends AbstractQueryCreator<Query, Query> {
 		switch (type) {
 		case GREATER_THAN:
 			return criteria.gt(parameters.nextConverted());
+		case GREATER_THAN_EQUAL:
+			return criteria.gte(parameters.nextConverted());
 		case LESS_THAN:
 			return criteria.lt(parameters.nextConverted());
+		case LESS_THAN_EQUAL:
+			return criteria.lte(parameters.nextConverted());
 		case BETWEEN:
 			return criteria.gt(parameters.nextConverted()).lt(parameters.nextConverted());
 		case IS_NOT_NULL:

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

@@ -130,6 +130,27 @@ public class MongoQueryCreatorUnitTests {
 		assertBindsDistanceToQuery(point, distance, query);
 	}
 
+	@Test
+	public void createsLessThanEqualQueryCorrectly() throws Exception {
+		
+		PartTree tree = new PartTree("findByAgeLessThanEqual", Person.class);
+		MongoQueryCreator creator = new MongoQueryCreator(tree, getAccessor(converter, 18));
+		
+		Query reference = query(where("age").lte(18));
+		assertThat(creator.createQuery().getQueryObject(), is (reference.getQueryObject()));
+	}
+	
+	@Test
+  public void createsGreaterThanEqualQueryCorrectly() throws Exception {
+		
+		PartTree tree = new PartTree("findByAgeGreaterThanEqual", Person.class);
+		MongoQueryCreator creator = new MongoQueryCreator(tree, getAccessor(converter, 18));
+		
+		Query reference = query(where("age").gte(18));
+		assertThat(creator.createQuery().getQueryObject(), is (reference.getQueryObject()));
+	}
+	
+
 	private void assertBindsDistanceToQuery(Point point, Distance distance, Query reference) throws Exception {
 
 		when(converter.convertToMongoType("Dave")).thenReturn("Dave");