Add QueryCriteria arrayContaining.

Add QueryCriteria arrayContaining which maps to n1ql array_containing.

Closes #1073.
Original pull request: #1109.

Co-authored-by: mikereiche <michael.reiche@couchbase.com>

src/main/java/org/springframework/data/couchbase/core/query/QueryCriteria.java

@@ -192,6 +192,13 @@ public class QueryCriteria implements QueryCriteriaDefinition {
 		return this;
 	}
 
+	public QueryCriteria arrayContaining(@Nullable Object o) {
+		operator = "ARRAY_CONTAINING";
+		value = new Object[] { o };
+		format = "array_containing(%1$s, %3$s)";
+		return this;
+	}
+
 	public QueryCriteria notContaining(@Nullable Object o) {
 		value = new QueryCriteria[] { wrap(containing(o)) };
 		operator = "NOT";

src/test/java/org/springframework/data/couchbase/core/query/QueryCriteriaTests.java

@@ -123,14 +123,11 @@ class QueryCriteriaTests {
 		assertEquals("`name` like (\"Cou\"||\"%\")", c.export());
 	}
 
-	/* cannot do this properly yet because in arg to when() in
-	       * startingWith()  cannot be a QueryCriteria
 	@Test
 	void testStartingWithExpr() {
 		QueryCriteria c = where(i("name")).startingWith(where(i("name")).plus("xxx"));
-		assertEquals("`name` like (((`name` || "xxx") || ""%""))", c.export());
+		assertEquals("`name` like (((`name` || \"xxx\"))||\"%\")", c.export());
 	}
-	      */
 
 	@Test
 	void testEndingWith() {
@@ -162,6 +159,12 @@ class QueryCriteriaTests {
 		assertEquals("not( (contains(`name`, \"Elvis\")) )", c.export());
 	}
 
+	@Test
+	void testArrayContaining() {
+		QueryCriteria c = where(i("name")).arrayContaining("Elvis");
+		assertEquals("array_containing(`name`, \"Elvis\")", c.export());
+	}
+
 	@Test
 	void testLike() {
 		QueryCriteria c = where(i("name")).like("%ouch%");