Java Buzz Forum - The Same Code

This post originated from an RSS feed registered with Java Buzz by Brian McCallister.
Original Post: The Same Code Feed Title: Waste of Time Feed URL: http://kasparov.skife.org/blog/index.rss Feed Description: A simple waste of time and weblog experiment	Latest Java Buzz Posts Latest Java Buzz Posts by Brian McCallister Latest Posts From Waste of Time

Same thing in three languages (one language twice, doing two styles). All technically as very realistic pseudo-code =)

Handle h;
try {
    h = dbi.open();
    h.begin()
    final Collection results = h.query(CHANGED_DESCRIPTIONS);
    for (Iterator i = results.iterator(); i.hasNext();) {
        final Map row = (Map) i.next();
        System.out.println(row.get("name"));
    }
} catch (Exception e) {
    if (h != null && h.isOpen()) {
        if (h.isInTransaction()) {
            h.rollback();
        }
    }
    throw new DBIException("...", e);
} catch (Error e) {
    if (h != null && h.isOpen()) {
        if (h.isInTransaction()) {
            h.rollback();
        }
    }
    throw new DBIError("...", e);
} finally {
    if (h != null) {
        h.close();
    }
}

dbi.open(new HandleCallback() {
    public void withHandle(final Handle handle) throws Exception {
        handle.inTransaction(new TransactionCallback() {
            public void inTransaction(final Handle handle) throws Exception {
                handle.query(CHANGED_DESCRIPTIONS, new RowCallback() {
                    public void eachRow(final Handle handle, final Map row) throws Exception {
                        System.out.println(row.get("name"));
                    }
                });
            }
        });
    }
});

or (this one is even more pseudocode'ish)

(invoke dbi 'with-handle (lambda (handle) 
    (invoke handle 'in-transaction (lambda(handle)
        (invoke handle 'each-row (CHANGED_DESCRIPTIONS lambda(row) 
            (print (map-get row 'name))))))))

dbi.open do |handle|
    handle.inTransaction do 
        handle.query(CHANGED_DESCRIPTIONS) { |row| puts row['name'] }
    end
end


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