public String toString() {
StringBuffer buf = new StringBuffer("update " + table_);
if (alias_ != null) buf.append(" " + alias_);
buf.append(" set ");
Enumeration e;
if (columns_ != null) e = columns_.elements();
else e = set_.keys();
boolean first = true;
while (e.hasMoreElements()) {
String key = e.nextElement().toString();
if (!first) buf.append(", ");
buf.append(key + "=" + set_.get(key).toString());
first = false;
}
if (where_ != null) buf.append(" where " + where_.toString());
return buf.toString();
}