-struct casewriter *mem_writer_create (size_t value_cnt);
-struct casewriter *tmpfile_writer_create (size_t value_cnt);
-struct casewriter *autopaging_writer_create (size_t value_cnt);
+struct casewriter *mem_writer_create (const struct caseproto *);
+struct casewriter *tmpfile_writer_create (const struct caseproto *);
+struct casewriter *autopaging_writer_create (const struct caseproto *);