Allow QueryOptions to set timeout to 0.

If it is zero, the read timeout will be disabled for this statement.

Closes spring-projects#1494

spring-data-cassandra/src/main/java/org/springframework/data/cassandra/core/cql/QueryOptions.java

@@ -284,6 +284,7 @@ public int hashCode() {
 	 * Builder for {@link QueryOptions}.
 	 *
 	 * @author Mark Paluch
+	 * @author Seungho Kang
 	 * @since 1.5
 	 */
 	public static class QueryOptionsBuilder {
@@ -482,8 +483,7 @@ public QueryOptionsBuilder readTimeout(long readTimeout, TimeUnit timeUnit) {
 		@Deprecated
 		public QueryOptionsBuilder readTimeout(Duration readTimeout) {
 
-			Assert.isTrue(!readTimeout.isZero() && !readTimeout.isNegative(),
-					"ReadTimeout must be greater than equal to zero");
+			Assert.isTrue(!readTimeout.isNegative(), "ReadTimeout must be greater than equal to zero");
 
 			this.timeout = readTimeout;
 
@@ -548,7 +548,7 @@ public QueryOptionsBuilder serialConsistencyLevel(ConsistencyLevel consistencyLe
 		 */
 		public QueryOptionsBuilder timeout(Duration timeout) {
 
-			Assert.isTrue(!timeout.isZero() && !timeout.isNegative(), "ReadTimeout must be greater than equal to zero");
+			Assert.isTrue(!timeout.isNegative(), "ReadTimeout must be greater than equal to zero");
 
 			this.timeout = timeout;
 

spring-data-cassandra/src/test/java/org/springframework/data/cassandra/core/cql/QueryOptionsUnitTests.java

@@ -31,6 +31,7 @@
  * @author Mark Paluch
  * @author Tomasz Lelek
  * @author Sam Lightfoot
+ * @author Seungho Kang
  */
 class QueryOptionsUnitTests {
 
@@ -86,4 +87,34 @@ void buildQueryOptionsMutate() {
 		assertThat(mutated.getRoutingKeyspace()).isEqualTo(CqlIdentifier.fromCql("rksl"));
 		assertThat(mutated.getRoutingKey()).isEqualTo(ByteBuffer.allocate(1));
 	}
+
+	@Test // GH-1494
+	void buildZeroDurationTimeoutQueryOptions() {
+
+		QueryOptions queryOptions = QueryOptions.builder().timeout(Duration.ofSeconds(0)).build();
+
+		assertThat(queryOptions.getTimeout()).isEqualTo(Duration.ZERO);
+	}
+
+	@Test // GH-1494
+	void shouldRejectNegativeDurationTimeoutQueryOptions() {
+
+		assertThatIllegalArgumentException().isThrownBy(
+				() -> QueryOptions.builder().timeout(Duration.ofSeconds(-1)).build());
+	}
+
+	@Test // GH-1494
+	void buildZeroDurationReadTimeoutQueryOptions() {
+
+		QueryOptions queryOptions = QueryOptions.builder().readTimeout(Duration.ofSeconds(0)).build();
+
+		assertThat(queryOptions.getReadTimeout()).isEqualTo(Duration.ZERO);
+	}
+
+	@Test // GH-1494
+	void shouldRejectNegativeDurationReadTimeoutQueryOptions() {
+
+		assertThatIllegalArgumentException().isThrownBy(
+				() -> QueryOptions.builder().readTimeout(Duration.ofSeconds(-1)).build());
+	}
 }