1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/samples/trycatchredo/src/org/apidesign/exceptions/trycatchredo/usage/QueryStream.java	Sun Feb 01 16:29:46 2009 +0100
     1.3 @@ -0,0 +1,65 @@
     1.4 +package org.apidesign.exceptions.trycatchredo.usage;
     1.5 +
     1.6 +import org.apidesign.exceptions.trycatchredo.api.UserQuestionException;
     1.7 +import java.io.ByteArrayOutputStream;
     1.8 +import java.io.IOException;
     1.9 +import java.io.OutputStream;
    1.10 +import javax.swing.JOptionPane;
    1.11 +
    1.12 +public final class QueryStream extends OutputStream {
    1.13 +    private ByteArrayOutputStream arr = new ByteArrayOutputStream();
    1.14 +    /** this field can be manipulated by the QueryException */
    1.15 +    Boolean reverse;
    1.16 +
    1.17 +    @Override
    1.18 +    public synchronized void write(byte[] b, int off, int len) throws IOException {
    1.19 +        if (reverse == null) {
    1.20 +            throw new QueryException();
    1.21 +        }
    1.22 +        arr.write(b, off, len);
    1.23 +    }
    1.24 +
    1.25 +    @Override
    1.26 +    public synchronized void write(int b) throws IOException {
    1.27 +        if (reverse == null) {
    1.28 +            throw new QueryException();
    1.29 +        }
    1.30 +        arr.write(b);
    1.31 +    }
    1.32 +
    1.33 +    @Override
    1.34 +    public String toString() {
    1.35 +        if (reverse == null) {
    1.36 +            return "Reverse question was not answered yet!";
    1.37 +        }
    1.38 +        if (reverse) {
    1.39 +            StringBuilder sb = new StringBuilder();
    1.40 +            sb.append(arr.toString());
    1.41 +            sb.reverse();
    1.42 +            return sb.toString();
    1.43 +        }
    1.44 +        return arr.toString();
    1.45 +    }
    1.46 +
    1.47 +    private class QueryException extends UserQuestionException {
    1.48 +
    1.49 +        @Override
    1.50 +        public JOptionPane getQuestionPane() {
    1.51 +            JOptionPane p = new JOptionPane("Store in reverse way?");
    1.52 +            p.setOptionType(JOptionPane.YES_NO_CANCEL_OPTION);
    1.53 +            return p;
    1.54 +        }
    1.55 +
    1.56 +        @Override
    1.57 +        public void confirm(Object option) {
    1.58 +            if (option.equals(JOptionPane.YES_OPTION)) {
    1.59 +                reverse = Boolean.TRUE;
    1.60 +                return;
    1.61 +            }
    1.62 +            if (option.equals(JOptionPane.NO_OPTION)) {
    1.63 +                reverse = Boolean.FALSE;
    1.64 +                return;
    1.65 +            }
    1.66 +        }
    1.67 +    }
    1.68 +}