H2 Console: opening a MS SQL Server database is now faster. Also, listing the…

H2 Console: opening a MS SQL Server database is now faster. Also, listing the database meta data sometimes resulted in an exception.

h2/src/main/org/h2/server/web/DbContents.java

@@ -72,6 +72,11 @@ public class DbContents {
      */
     boolean isSQLite;
 
+    /**
+     * True if this is a MS SQL Server database.
+     */
+    boolean isMSSQLServer;
+
     /**
      * True if the unquoted names are stored as upper case.
      * False for MySQL and PostgreSQL.
@@ -101,7 +106,7 @@ public class DbContents {
      *
      * @param meta the database meta data
      */
-    void readContents(DatabaseMetaData meta) throws SQLException {
+    synchronized void readContents(DatabaseMetaData meta) throws SQLException {
         String prod = StringUtils.toLowerEnglish(meta.getDatabaseProductName());
         isSQLite = prod.indexOf("sqlite") >= 0;
         String url = meta.getURL();
@@ -124,6 +129,7 @@ public class DbContents {
             isMySQL = url.startsWith("jdbc:mysql:");
             isDerby = url.startsWith("jdbc:derby:");
             isFirebird = url.startsWith("jdbc:firebirdsql:");
+            isMSSQLServer = url.startsWith("jdbc:sqlserver:");
         }
         storedUpperCaseIdentifiers = meta.storesUpperCaseIdentifiers();
         String defaultSchemaName = getDefaultSchemaName(meta);
@@ -178,6 +184,16 @@ public class DbContents {
                         break;
                     }
                 }
+            } else if (isMSSQLServer) {
+                for (String ignore : new String[] {
+                        "sys", "db_accessadmin", "db_backupoperator", "db_datareader", "db_datawriter", "db_ddladmin",
+                        "db_denydatareader", "db_denydatawriter", "db_owner", "db_securityadmin"
+                }) {
+                    if (ignore.equals(schema)) {
+                        schema = null;
+                        break;
+                    }
+                }
             }
             if (schema == null) {
                 continue;