+
+
+/**
+ * This function applies a prefix+uri to "unresolved" index and relation
+ * URIs.
+ *
+ * "unresolved" URIs are those nodes where member index_uri / relation_uri
+ * is NULL.
+ */
+YAZ_EXPORT
+struct cql_node *cql_apply_prefix(struct cql_node *cn,
+ const char *prefix,
+ const char *uri);
+
+/**
+ * This function creates a boolean node.
+ */