Cursor.h

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/******************************************************************************/

#if !defined(CURSOR_H)
#define CURSOR_H

template<typename K, typename V>
class Cursor {
public:
Cursor(
    ion_dictionary_t    *dictionary,
    ion_predicate_t     *predicate
) {
    this->dictionary    = dictionary;
    dictionary_find(dictionary, predicate, &cursor);
    record.key          = malloc(dictionary->instance->record.key_size);
    record.value        = malloc(dictionary->instance->record.value_size);
}

~Cursor(
) {
    cursor->destroy(&cursor);
    free(record.key);
    free(record.value);
}

bool
hasNext(
) {
    return cursor->status == cs_cursor_initialized || cursor->status == cs_cursor_active;
}

bool
next(
) {
    ion_cursor_status_t status = cursor->next(cursor, &record);

    return status == cs_cursor_initialized || status == cs_cursor_active;
}

K
getKey(
) {
    return *((K *) record.key);
}

V
getValue(
) {
    return *((V *) record.value);
}

private:

ion_dictionary_t    *dictionary;
ion_dict_cursor_t   *cursor;
ion_record_t        record;
};

#endif