[refactor] Address code-review from @reinhapa

Author: adamretter

exist-core/src/main/java/org/exist/xquery/CountClause.java

@@ -105,12 +105,12 @@ private boolean hasPreviousOrderByDescending() {
         FLWORClause prev = getPreviousClause();
         while (prev != null) {
             switch (prev.getType()) {
-                case LET:
-                case GROUPBY:
-                case FOR:
+                case LET, GROUPBY, FOR -> {
                     return false;
-                case ORDERBY:
-                   return isDescending(((OrderByClause) prev).getOrderSpecs());
+                }
+                case ORDERBY -> {
+                    return isDescending(((OrderByClause) prev).getOrderSpecs());
+                }
             }
             prev = prev.getPreviousClause();
         }

exist-core/src/main/java/org/exist/xquery/value/DoubleValue.java

@@ -153,14 +153,14 @@ public boolean isPositive() {
             comparison = () -> Constants.SUPERIOR;
         } else if (isInfinite() && other.isInfinite() && isPositive() == other.isPositive()) {
             comparison = () -> Constants.EQUAL;
-        } else if (other instanceof IntegerValue) {
-            comparison = () -> BigDecimal.valueOf(value).compareTo(new BigDecimal(((IntegerValue) other).value));
-        } else if (other instanceof DecimalValue) {
-            comparison = () -> BigDecimal.valueOf(value).compareTo(((DecimalValue) other).value);
-        } else if (other instanceof DoubleValue) {
-            comparison = () -> Double.compare(value, ((DoubleValue) other).value);
-        } else if (other instanceof FloatValue) {
-            comparison = () -> Double.compare(value, ((FloatValue) other).value);
+        } else if (other instanceof IntegerValue iv) {
+            comparison = () -> BigDecimal.valueOf(value).compareTo(new BigDecimal(iv.value));
+        } else if (other instanceof DecimalValue dv) {
+            comparison = () -> BigDecimal.valueOf(value).compareTo(dv.value);
+        } else if (other instanceof DoubleValue dv) {
+            comparison = () -> Double.compare(value, dv.value);
+        } else if (other instanceof FloatValue fv) {
+            comparison = () -> Double.compare(value, fv.value);
         } else {
             comparison = null;
         }