index cfdf48db8ea7d63fd1c2ef718901706bd10ca2e0..9ab5cdabf50936d33f5a494a64456bad3502c6c9 100644 (file)
--- a/src/include/core/data.h
+++ b/src/include/core/data.h
_Bool
sdb_data_isnull(const sdb_data_t *datum);
+/*
+ * sdb_data_inarray:
+ * Determine whether a datum is included in an array based on the usual
+ * comparison function of the value's type. The element type of the array has
+ * to match the type of the value.
+ */
+_Bool
+sdb_data_inarray(const sdb_data_t *value, const sdb_data_t *array);
+
/*
* Operators supported by sdb_data_eval_expr.
*/
sdb_data_expr_eval(int op, const sdb_data_t *d1, const sdb_data_t *d2,
sdb_data_t *res);
+/*
+ * sdb_data_expr_type:
+ * Determine the type of the expression when applying the specified operator
+ * to the specified types. Note that if an actual value is a typed NULL value
+ * (e.g. a NULL string value), the return value of this function does not
+ * match the return type of sdb_data_expr_eval.
+ *
+ * See the documentation of sdb_data_expr_eval() for a description of which
+ * operations are supported.
+ *
+ * Returns:
+ * - the type id on success
+ * - a negative value else
+ */
+int
+sdb_data_expr_type(int op, int type1, int type2);
+
/*
* sdb_data_strlen:
* Returns a (worst-case) estimate for the number of bytes required to format