Use a constant for "--hide--"

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

@@ -17,6 +17,13 @@ import org.h2.engine.Constants;
  */
 public class JdbcSQLException extends SQLException {
 
+    /**
+     * If the SQL statement contains this text, then it is never added to the
+     * SQL exception. Hiding the SQL statement may be important if it contains a
+     * passwords, such as a CREATE LINKED TABLE statement.
+     */
+    public static final String HIDE_SQL = "--hide--";
+
     private static final long serialVersionUID = 1L;
     private final String originalMessage;
     private final Throwable cause;
@@ -144,7 +151,7 @@ public class JdbcSQLException extends SQLException {
      * INTERNAL
      */
     public void setSQL(String sql) {
-        if (sql.indexOf("--hide--") < 0) {
+        if (sql.indexOf(HIDE_SQL) < 0) {
             this.sql = sql;
             buildMessage();
         }

h2/src/main/org/h2/table/TableLink.java

@@ -20,6 +20,7 @@ import org.h2.engine.Session;
 import org.h2.index.Index;
 import org.h2.index.IndexType;
 import org.h2.index.LinkedIndex;
+import org.h2.jdbc.JdbcSQLException;
 import org.h2.log.UndoLogRecord;
 import org.h2.message.Message;
 import org.h2.message.Trace;
@@ -325,7 +326,7 @@ public class TableLink extends Table {
         if (readOnly) {
             buff.append(" READONLY");
         }
-        buff.append(" /*--hide--*/");
+        buff.append(" /*" + JdbcSQLException.HIDE_SQL + "*/");
         return buff.toString();
     }