coco::work_node_comp_hook Class Reference
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The work_node_comp_hook class (work node computation hook).
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#include <comp_hook.h>
Public Member Functions | |
| work_node_comp_hook (const wnc_hook_base &w) | |
| work_node_comp_hook (const work_node_comp_hook &wh) | |
| ~work_node_comp_hook () | |
| work_node_comp_hook & | operator= (const work_node_comp_hook &w) |
| void | operator() (const work_node &wn, dbt_row &dbr, std::list< delta > *add_ds=NULL, std::list< certificate > *add_cs=NULL) |
| bool | init_columns (vdbl::standard_table &stable) |
| bool | drop_columns (vdbl::standard_table &stable) |
| const std::string & | name () const |
Detailed Description
The work_node_comp_hook class is used to compute info about work_nodes just when the work node is split and stored in the search graph. It is, like the delta class, designed as a wrapper class in order to overcome the problem that copy constructors cannot be overloaded. Work node computation hooks are stored in the search_graph, can be registered and released with search_graph methods.Definition at line 50 of file comp_hook.h.
Constructor & Destructor Documentation
| coco::work_node_comp_hook::work_node_comp_hook | ( | const wnc_hook_base & | w | ) | [inline] |
Constructor, which constructs a work node computation hook from a wnc_hook_base. The clone operation for the wnc_hook_base will be called in that process.
Definition at line 193 of file comp_hook.h.
| coco::work_node_comp_hook::work_node_comp_hook | ( | const work_node_comp_hook & | wh | ) | [inline] |
Copy Constructor, which constructs a new work node computation hook from an existing one. The clone operation for the wnc_hook_base will be called in that process, effectively overloading the copy constructor for the wnc_hook_base.
Definition at line 198 of file comp_hook.h.
| coco::work_node_comp_hook::~work_node_comp_hook | ( | ) | [inline] |
Standard Destructor calling delete on __wh.
Definition at line 203 of file comp_hook.h.
Member Function Documentation
| bool coco::work_node_comp_hook::drop_columns | ( | vdbl::standard_table & | stable | ) | [inline] |
Upon unregistering this hook, destroy the column(s) in the ``search info'' table in which the result(s) of this hook are stored.
Definition at line 227 of file comp_hook.h.
| bool coco::work_node_comp_hook::init_columns | ( | vdbl::standard_table & | stable | ) | [inline] |
Upon registering this hook, initialize the column(s) in the ``search info'' table in which the result(s) of this hook are stored.
Definition at line 222 of file comp_hook.h.
| const std::string & coco::work_node_comp_hook::name | ( | ) | const [inline] |
Return the identifier string for this work node computation hook.
Definition at line 232 of file comp_hook.h.
| void coco::work_node_comp_hook::operator() | ( | const work_node & | wn, | |
| dbt_row & | dbr, | |||
| std::list< delta > * | add_ds = NULL, |
|||
| std::list< certificate > * | add_cs = NULL | |||
| ) | [inline] |
The evaluation operator of this computation hook. It stores the result of the hook applied to work_node wn in dbt_row dbr, which in return is stored in the ``search info'' table of the search database. The hook can compute additional deltas and add them to add_ds, which are applied to the work node during the split.
Definition at line 216 of file comp_hook.h.
| work_node_comp_hook & coco::work_node_comp_hook::operator= | ( | const work_node_comp_hook & | w | ) | [inline] |
Assignment operator, which uses the clone operation for the wnc_hook_base, effectively overloading the assignment operator for the wnc_hook_base.
Definition at line 209 of file comp_hook.h.
The documentation for this class was generated from the following file:
