Port 17e7374 from 3.x branch (Parse rc versions)

Author: Bouncheck

core/src/main/java/com/datastax/oss/driver/api/core/Version.java

@@ -42,7 +42,7 @@ public class Version implements Comparable<Version>, Serializable {
   private static final long serialVersionUID = 1;
 
   private static final String VERSION_REGEXP =
-      "(\\d+)\\.(\\d+)(\\.\\d+)?(\\.\\d+)?([~\\-]\\w[.\\w]*(?:-\\w[.\\w]*)*)?(\\+[.\\w]+)?";
+      "(\\d+)\\.(\\d+)(\\.(?:rc)?\\d+)?(\\.\\d+)?([~\\-]\\w[.\\w]*(?:-\\w[.\\w]*)*)?(\\+[.\\w]+)?";
 
   private static final Pattern pattern = Pattern.compile(VERSION_REGEXP);
 
@@ -100,8 +100,9 @@ public static Version parse(@Nullable String version) {
       int minor = Integer.parseInt(matcher.group(2));
 
       String pa = matcher.group(3);
+      boolean isRC = pa != null && pa.startsWith(".rc"); // Detect Scylla naming convention: X.Y.rcZ
       int patch =
-          pa == null || pa.isEmpty()
+          pa == null || pa.isEmpty() || isRC
               ? 0
               : Integer.parseInt(
                   pa.substring(1)); // dropping the initial '.' since it's included this time
@@ -115,10 +116,12 @@ public static Version parse(@Nullable String version) {
 
       String pr = matcher.group(5);
       String[] preReleases =
-          pr == null || pr.isEmpty()
-              ? null
-              : pr.substring(1)
-                  .split("-"); // drop initial '-' or '~' then split on the remaining ones
+          isRC
+              ? new String[] {pa.substring(1)}
+              : pr == null || pr.isEmpty()
+                  ? null
+                  : pr.substring(1)
+                      .split("-"); // drop initial '-' or '~' then split on the remaining ones
 
       String bl = matcher.group(6);
       String build = bl == null || bl.isEmpty() ? null : bl.substring(1); // drop the initial '+'

core/src/test/java/com/datastax/oss/driver/api/core/VersionTest.java

@@ -68,6 +68,14 @@ public void should_parse_dse_patch() {
         .hasNextStable("1.2.19.2");
   }
 
+  @Test
+  public void should_parse_scylla_release_candidates() {
+    assertThat(Version.parse("4.3.rc5"))
+        .hasMajorMinorPatch(4, 3, 0)
+        .hasToString("4.3.0-rc5")
+        .hasPreReleaseLabels("rc5");
+  }
+
   @Test
   public void should_order_versions() {
     // by component