+ struct variable_node *vn = NULL;
+ int i;
+ if (NULL == cat)
+ return;
+
+ for (i = 0; i < cat->n_iap; ++i)
+ {
+ struct interaction_value *iv = NULL;
+ /* Interate over each interaction value, and unref any cases that we reffed */
+ HMAP_FOR_EACH (iv, struct interaction_value, node, &cat->iap[i].ivmap)
+ {
+ if (cat->payload && cat->payload->destroy)
+ cat->payload->destroy (cat->aux1, cat->aux2, iv->user_data);
+ case_unref (iv->ccase);
+ }
+
+ free (cat->iap[i].enc_sum);
+ free (cat->iap[i].df_prod);
+ hmap_destroy (&cat->iap[i].ivmap);
+ }
+
+ /* Interate over each variable and delete its value map */
+ HMAP_FOR_EACH (vn, struct variable_node, node, &cat->varmap)
+ {
+ hmap_destroy (&vn->valmap);
+ }
+
+ hmap_destroy (&cat->varmap);
+
+ pool_destroy (cat->pool);
+