package jnicli;import java.util.Enumeration;/** * Iterator through result set returned by Database.select. * There are two types of cursors: incremental and prefetched. * Incremental cursor fetch records on demand (one record at each iteration). * And prefetched cursor loads all selected records.  * Prefetched cursor is used in case of remote database connections and when AUTOCOMMIT flag is set in select */public interface Cursor { // extends Enumeration { // if Cursor is derived from enumeration, then Hessian tries tp deserialize it as Vector    /**     * Tests if this enumeration contains more elements.     *     * @return  <code>true</code> if and only if this enumeration object     *           contains at least one more element to provide;     *          <code>false</code> otherwise.     */    boolean hasMoreElements();    /**     * Returns the next element of this enumeration if this enumeration     * object has at least one more element to provide.     *     * @return     the next element of this enumeration.     * @exception  NoSuchElementException  if no more elements exist.     */    Object nextElement();    /**     * Get OID of the current object. This method should be used only after     * <code>Enumeration.nextElement()</code> method and its result is OID of the object returned     * by <code>nextElement()</code>.     * @exception  java.util.NoSuchElementException if there is no current element     */    long getOid();    /**     * Update current object. This method should be invoked after <code>Enumeration.nextElement()</code>     * and store updated object, returned by  <code>nextElement()</code>.     * This method is not supported for prefetched cursor (which is returned for remote database or     * when AUTOCOMMIT flag is set in select). In this case you should use Database.update method     * specifying OID of updated object. This OID can be obtained using Cursor.getOid() method.     * @exception  java.util.NoSuchElementException if there is no current element     */    void update();    /**     * Get number of selected records     */    int size();}