Small improvements.

h2/src/main/org/h2/value/DataType.java

@@ -586,8 +586,9 @@ public class DataType {
                 if (list == null) {
                     return ValueNull.INSTANCE;
                 }
-                Value[] values = new Value[list.length];
-                for (int i = 0; i < list.length; i++) {
+                int len = list.length;
+                Value[] values = new Value[len];
+                for (int i = 0; i < len; i++) {
                     values[i] = DataType.convertToValue(session, list[i], Value.NULL);
                 }
                 v = ValueArray.get(values);

h2/src/main/org/h2/value/Value.java

@@ -802,8 +802,10 @@ public abstract class Value {
      *         1 otherwise
      */
     public final int compareTypeSave(Value v, CompareMode mode) {
-        if (this == ValueNull.INSTANCE) {
-            return v == ValueNull.INSTANCE ? 0 : -1;
+        if (this == v) {
+            return 0;
+        } else if (this == ValueNull.INSTANCE) {
+            return -1;
         } else if (v == ValueNull.INSTANCE) {
             return 1;
         }

h2/src/main/org/h2/value/ValueArray.java

@@ -86,8 +86,9 @@ public class ValueArray extends Value {
     }
 
     public Object getObject() {
-        Object[] list = new Object[values.length];
-        for (int i = 0; i < values.length; i++) {
+        int len = values.length;
+        Object[] list = new Object[len];
+        for (int i = 0; i < len; i++) {
             list[i] = values[i].getObject();
         }
         return list;
@@ -131,10 +132,11 @@ public class ValueArray extends Value {
         if (values == v.values) {
             return true;
         }
-        if (values.length != v.values.length) {
+        int len = values.length;
+        if (len != v.values.length) {
             return false;
         }
-        for (int i = 0; i < values.length; i++) {
+        for (int i = 0; i < len; i++) {
             if (!values[i].equals(v.values[i])) {
                 return false;
             }

h2/src/test/org/h2/test/jdbc/TestCallableStatement.java

@@ -60,8 +60,8 @@ public class TestCallableStatement extends TestBase {
         assertEquals(1, rs.getInt(1));
         assertEquals("Hello", rs.getString(2));
         assertFalse(rs.next());
-        stat.execute("CREATE ALIAS testcall FOR \"" + getClass().getName() + ".testCall\"");
-        call = conn.prepareCall("{CALL testcall(?,?,?)}");
+        stat.execute("CREATE ALIAS testCall FOR \"" + getClass().getName() + ".testCall\"");
+        call = conn.prepareCall("{CALL testCall(?,?,?)}");
         call.setInt("A", 100);
         call.setString(2, "abc");
         long t = System.currentTimeMillis();
@@ -93,7 +93,7 @@ public class TestCallableStatement extends TestBase {
             // expected exception
         }
         try {
-            call.getBoolean("ASD");
+            call.getBoolean("X");
             fail("incorrect parameter name value");
         } catch (SQLException e) {
             // expected exception