diff --git a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/repository/query/MongoQueryCreator.java b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/repository/query/MongoQueryCreator.java
index 0e5859983..2b8f3db9f 100644
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/repository/query/MongoQueryCreator.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/repository/query/MongoQueryCreator.java
@@ -134,7 +134,7 @@ class MongoQueryCreator extends AbstractQueryCreator<Query, Query> {
 	*/
 	@Override
 	protected Query or(Query base, Query query) {
-		return new OrQuery(new Query[] {base, query});
+		return new OrQuery(new Query[] { base, query });
 	}
 
 	/*
@@ -192,6 +192,14 @@ class MongoQueryCreator extends AbstractQueryCreator<Query, Query> {
 		case LIKE:
 			String value = parameters.next().toString();
 			return criteria.regex(toLikeRegex(value));
+		case REGEX:
+			return criteria.regex(parameters.next().toString());
+		case EXISTS:
+			return criteria.exists((Boolean) parameters.next());
+		case TRUE:
+			return criteria.is(true);
+		case FALSE:
+			return criteria.is(false);
 		case NEAR:
 
 			Distance distance = accessor.getMaxDistance();
diff --git a/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/core/Person.java b/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/core/Person.java
index 6f056b381..3d6f2148a 100644
--- a/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/core/Person.java
+++ b/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/core/Person.java
@@ -27,6 +27,8 @@ public class Person {
 
 	private Person friend;
 
+	private boolean active = true;
+
 	public Person() {
 		this.id = new ObjectId();
 	}
@@ -80,6 +82,13 @@ public class Person {
 		this.friend = friend;
 	}
 
+	/**
+	 * @return the active
+	 */
+	public boolean isActive() {
+		return active;
+	}
+
 	/*
 	  * (non-Javadoc)
 	  *
diff --git a/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/repository/query/MongoQueryCreatorUnitTests.java b/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/repository/query/MongoQueryCreatorUnitTests.java
index 47b89d1fa..5eccee996 100644
--- a/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/repository/query/MongoQueryCreatorUnitTests.java
+++ b/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/repository/query/MongoQueryCreatorUnitTests.java
@@ -66,9 +66,9 @@ public class MongoQueryCreatorUnitTests {
 
 	@Before
 	public void setUp() throws SecurityException, NoSuchMethodException {
-		
+
 		context = new MongoMappingContext();
-		
+
 		doAnswer(new Answer<Object>() {
 			public Object answer(InvocationOnMock invocation) throws Throwable {
 				return invocation.getArguments()[0];
@@ -151,18 +151,66 @@ public class MongoQueryCreatorUnitTests {
 	}
 
 	/**
-	 * DATADOC-291
+	 * @see DATAMONGO-291
 	 */
 	@Test
 	public void honoursMappingInformationForPropertyPaths() {
 
 		PartTree partTree = new PartTree("findByUsername", User.class);
-		
+
 		MongoQueryCreator creator = new MongoQueryCreator(partTree, getAccessor(converter, "Oliver"), context);
 		Query reference = query(where("foo").is("Oliver"));
 		assertThat(creator.createQuery().getQueryObject(), is(reference.getQueryObject()));
 	}
 
+	/**
+	 * @see DATAMONGO-338
+	 */
+	@Test
+	public void createsExistsClauseCorrectly() {
+
+		PartTree tree = new PartTree("findByAgeExists", Person.class);
+		MongoQueryCreator creator = new MongoQueryCreator(tree, getAccessor(converter, true), context);
+		Query query = query(where("age").exists(true));
+		assertThat(creator.createQuery().getQueryObject(), is(query.getQueryObject()));
+	}
+
+	/**
+	 * @see DATAMONGO-338
+	 */
+	@Test
+	public void createsRegexClauseCorrectly() {
+
+		PartTree tree = new PartTree("findByFirstNameRegex", Person.class);
+		MongoQueryCreator creator = new MongoQueryCreator(tree, getAccessor(converter, ".*"), context);
+		Query query = query(where("firstName").regex(".*"));
+		assertThat(creator.createQuery().getQueryObject(), is(query.getQueryObject()));
+	}
+
+	/**
+	 * @see DATAMONGO-338
+	 */
+	@Test
+	public void createsTrueClauseCorrectly() {
+
+		PartTree tree = new PartTree("findByActiveTrue", Person.class);
+		MongoQueryCreator creator = new MongoQueryCreator(tree, getAccessor(converter), context);
+		Query query = query(where("active").is(true));
+		assertThat(creator.createQuery().getQueryObject(), is(query.getQueryObject()));
+	}
+
+	/**
+	 * @see DATAMONGO-338
+	 */
+	@Test
+	public void createsFalseClauseCorrectly() {
+
+		PartTree tree = new PartTree("findByActiveFalse", Person.class);
+		MongoQueryCreator creator = new MongoQueryCreator(tree, getAccessor(converter), context);
+		Query query = query(where("active").is(false));
+		assertThat(creator.createQuery().getQueryObject(), is(query.getQueryObject()));
+	}
+
 	private void assertBindsDistanceToQuery(Point point, Distance distance, Query reference) throws Exception {
 
 		when(converter.convertToMongoType("Dave")).thenReturn("Dave");
@@ -185,9 +233,9 @@ public class MongoQueryCreatorUnitTests {
 
 		List<Person> findByLocationNearAndFirstname(Point location, Distance maxDistance, String firstname);
 	}
-	
+
 	class User {
-		
+
 		@Field("foo")
 		String username;
 	}