Removed unused code and reduce visibility where possible.

h2/src/main/org/h2/bnf/RuleElement.java

@@ -13,7 +13,7 @@ import org.h2.util.StringUtils;
 /**
  * A single terminal rule in a BNF object.
  */
-public class RuleElement implements Rule {
+class RuleElement implements Rule {
 
     private boolean keyword;
     private String name;

h2/src/main/org/h2/bnf/RuleList.java

@@ -13,7 +13,7 @@ import org.h2.util.New;
 /**
  * Represents a sequence of BNF rules, or a list of alternative rules.
  */
-public class RuleList implements Rule {
+class RuleList implements Rule {
 
     private boolean or;
     private ArrayList<Rule> list;

h2/src/main/org/h2/bnf/RuleOptional.java

@@ -11,7 +11,7 @@ import java.util.HashMap;
 /**
  * Represents an optional BNF rule.
  */
-public class RuleOptional implements Rule {
+class RuleOptional implements Rule {
     private Rule rule;
     private boolean mapSet;
 

h2/src/main/org/h2/bnf/RuleRepeat.java

@@ -11,7 +11,7 @@ import java.util.HashMap;
 /**
  * Represents a loop in a BNF object.
  */
-public class RuleRepeat implements Rule {
+class RuleRepeat implements Rule {
 
     private final Rule rule;
     private final boolean comma;

h2/src/main/org/h2/fulltext/FullText.java

@@ -50,27 +50,27 @@ public class FullText {
     /**
      * A column name of the result set returned by the searchData method.
      */
-    protected static final String FIELD_SCHEMA = "SCHEMA";
+    private static final String FIELD_SCHEMA = "SCHEMA";
 
     /**
      * A column name of the result set returned by the searchData method.
      */
-    protected static final String FIELD_TABLE = "TABLE";
+    private static final String FIELD_TABLE = "TABLE";
 
     /**
      * A column name of the result set returned by the searchData method.
      */
-    protected static final String FIELD_COLUMNS = "COLUMNS";
+    private static final String FIELD_COLUMNS = "COLUMNS";
 
     /**
      * A column name of the result set returned by the searchData method.
      */
-    protected static final String FIELD_KEYS = "KEYS";
+    private static final String FIELD_KEYS = "KEYS";
 
     /**
      * The hit score.
      */
-    protected static final String FIELD_SCORE = "SCORE";
+    private static final String FIELD_SCORE = "SCORE";
 
     private static final String TRIGGER_PREFIX = "FT_";
     private static final String SCHEMA = "FT";

h2/src/main/org/h2/jdbc/JdbcConnection.java

@@ -1401,7 +1401,8 @@ public class JdbcConnection extends TraceObject implements Connection {
             return;
         }
         if (session != null && openStackTrace != null) {
-            trace.error(openStackTrace, "connection not closed");
+            Exception ex = DbException.get(ErrorCode.TRACE_CONNECTION_NOT_CLOSED);
+            trace.error(openStackTrace, ex.getMessage());
             try {
                 close();
             } catch (SQLException e) {

h2/src/main/org/h2/message/Trace.java

@@ -64,11 +64,6 @@ public class Trace {
      */
     public static final String SCHEMA = "schema";
 
-    /**
-     * The trace module name for sessions.
-     */
-    public static final String SESSION = "session";
-
     /**
      * The trace module name for sequences.
      */

h2/src/main/org/h2/util/Profiler.java

@@ -168,7 +168,7 @@ public class Profiler implements Runnable {
         }
     }
 
-    private boolean startsWithAny(String s, String[] prefixes) {
+    private static boolean startsWithAny(String s, String[] prefixes) {
         for (String p : prefixes) {
             if (p.length() > 0 && s.startsWith(p)) {
                 return true;