mirrors/z3
3
0
Fork 0
mirror of https://github.com/Z3Prover/z3 synced 2025-10-18 21:40:27 +00:00
Code Activity

remove a few leftovers from min aggregation cleanup

Browse source 
Signed-off-by: Nuno Lopes <nlopes@microsoft.com>
This commit is contained in:
Nuno Lopes 2015-12-09 09:28:17 +00:00
parent 83db19654f
commit d9cd01f3f7
8 changed files with 0 additions and 295 deletions
Download patch file Download diff file Expand all files Collapse all files

28
src/muz/rel/dl_base.h
View file

@ -192,29 +192,6 @@ namespace datalog {
virtual base_object * operator()(const base_object & t1, const base_object & t2) = 0;
};
/**
\brief Aggregate minimum value
Informally, we want to group rows in a table \c t by \c group_by_cols and
return the minimum value in column \c col among each group.
Let \c t be a table with N columns.
Let \c group_by_cols be a set of column identifers for table \c t such that |group_by_cols| < N.
Let \c col be a column identifier for table \c t such that \c col is not in \c group_by_cols.
Let R_col be a set of rows in table \c t such that, for all rows r_i, r_j in R_col
and column identifiers k in \c group_by_cols, r_i[k] = r_j[k].
For each R_col, we want to restrict R_col to those rows whose value in column \c col is minimal.
min_fn(R, group_by_cols, col) =
{ row in R | forall row' in R . row'[group_by_cols] = row[group_by_cols] => row'[col] >= row[col] }
*/
class min_fn : public base_fn {
public:
virtual base_object * operator()(const base_object & t) = 0;
};
class transformer_fn : public base_fn {
public:
virtual base_object * operator()(const base_object & t) = 0;
@ -879,7 +856,6 @@ namespace datalog {
typedef table_infrastructure::base_fn base_table_fn;
typedef table_infrastructure::join_fn table_join_fn;
typedef table_infrastructure::min_fn table_min_fn;
typedef table_infrastructure::transformer_fn table_transformer_fn;
typedef table_infrastructure::union_fn table_union_fn;
typedef table_infrastructure::mutator_fn table_mutator_fn;
@ -1044,7 +1020,6 @@ namespace datalog {
class table_plugin : public table_infrastructure::plugin_object {
friend class relation_manager;
class min_fn;
protected:
table_plugin(symbol const& n, relation_manager & manager) : plugin_object(n, manager) {}
public:
@ -1052,9 +1027,6 @@ namespace datalog {
virtual bool can_handle_signature(const table_signature & s) { return s.functional_columns()==0; }
protected:
virtual table_min_fn * mk_min_fn(const table_base & t,
unsigned_vector & group_by_cols, const unsigned col);
/**
If the returned value is non-zero, the returned object must take ownership of \c mapper.
Otherwise \c mapper must remain unmodified.