Examples of henplus.view.util.CancelWriter

henplus.view.util.CancelWriter
Little utility that allows to write a string to the screen and cancel it afterwards (with Backspaces). Will only write, if the Output is indeed a terminal.

            return _workingStatement.executeQuery(selectStmt.toString());
        }


        @Override
        public long getExpectedRows() {
            final CancelWriter selectInfo = new CancelWriter(HenPlus.msg());
            Statement stmt = null;
            ResultSet rset = null;
            try {
                selectInfo.print("determining number of rows...");
                stmt = _session.createStatement();
                final StringBuilder countStmt = new StringBuilder("SELECT count(*) from ");
                countStmt.append(_table);
                if (_whereClause != null) {
                    countStmt.append(" WHERE ");
                    countStmt.append(_whereClause);
                }
                rset = stmt.executeQuery(countStmt.toString());
                rset.next();
                return rset.getLong(1);
            } catch (final Exception e) {
                return -1;
            } finally {
                if (rset != null) {
                    try {
                        rset.close();
                    } catch (final Exception e) {
                    }
                }
                if (stmt != null) {
                    try {
                        stmt.close();
                    } catch (final Exception e) {
                    }
                }
                selectInfo.cancel();
            }
        }

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    public LongRunningTimeDisplay(final String msg, final long showAfter) {
        _startTimeDisplayAfter = showAfter;
        _message = msg;
        _running = true;
        _armed = false;
        _timeDisplay = new CancelWriter(HenPlus.msg());
    }

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        @Override
        public void cancelRunningStatement() {
            try {
                HenPlus.msg().println("cancel statement...");
                HenPlus.msg().flush();
                final CancelWriter info = new CancelWriter(HenPlus.msg());
                info.print("please wait");
                _stmt.cancel();
                info.cancel();
                HenPlus.msg().println("done.");
                _running = false;
            } catch (final Exception e) {
                Logger.debug("Exception while cancelling a statement: ", e);
            }

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Related Classes of henplus.view.util.CancelWriter

henplus.commands.DumpCommand$TableDumpSource

henplus.commands.LongRunningTimeDisplay

henplus.commands.SQLCommand$CurrentStatementCancelTarget

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