tomasz.sowa/morm
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added support in Model for removing the whole tree

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(without lists/vectors at the moment yet)




git-svn-id: svn://ttmath.org/publicrep/morm/trunk@1206 e52654a7-88a9-db11-a3e9-0013d4bc506e
This commit is contained in:
Tomasz Sowa
2019-09-05 16:32:35 +00:00
parent d2f851faf9
commit 0be9feda44
8 changed files with 118 additions and 67 deletions
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67
src/model.cpp
View File

@@ -411,16 +411,41 @@ void Model::generate_remove_query(PT::TextStream & stream, ModelData * model_dat
}
bool Model::remove(ModelData * model_data)
bool Model::remove(ModelData & model_data, bool remove_whole_tree)
{
return remove(&model_data);
}
bool Model::remove(ModelData * model_data, bool remove_whole_tree)
{
ModelEnv model_env_local;
model_env = &model_env_local;
model_env->model_data = model_data;
bool status = remove_tree(remove_whole_tree);
// what about if an exception was thrown? this pointer will not be null
model_env = nullptr;
return status;
}
// FIX ME we need to propagage the status from the whole tree, if there is an error somewhere then we should return error from the parent
bool Model::remove_tree(bool remove_whole_tree)
{
bool result = false;
if( remove_whole_tree )
{
model_env->model_connector_mode = MORM_MODEL_CONNECTOR_MODE_ITERATE_THROUGH_CHILDS_WITHOUT_FOREIGN_KEY_AND_REMOVE;
map_fields();
}
if( model_connector )
{
ModelEnv model_env_local;
model_env = &model_env_local;
model_env->model_data = model_data;
model_env->model_connector_mode = MORM_MODEL_CONNECTOR_MODE_GENERATING_DB_SQL;
DbConnector * db_connector = model_connector->get_db_connector();
@@ -435,7 +460,7 @@ bool Model::remove(ModelData * model_data)
if( result )
{
save_mode = DO_INSERT_ON_SAVE;
save_mode = DO_INSERT_ON_SAVE; // CHECKME may it would be better to set DO_NOTHING_ON_SAVE?
after_remove();
}
else
@@ -443,20 +468,18 @@ bool Model::remove(ModelData * model_data)
after_remove_failure();
}
}
}
// what about if an exception was thrown? this pointer will not be null
model_env = nullptr;
if( remove_whole_tree )
{
model_env->model_connector_mode = MORM_MODEL_CONNECTOR_MODE_ITERATE_THROUGH_CHILDS_WITH_FOREIGN_KEY_AND_REMOVE;
map_fields();
}
return result;
}
bool Model::remove(ModelData & model_data)
{
return remove(&model_data);
}
bool Model::save(ModelData & model_data, bool save_whole_tree)
@@ -486,7 +509,11 @@ bool Model::save_tree(bool save_whole_tree)
if( save_whole_tree )
{
model_env->model_connector_mode = MORM_MODEL_CONNECTOR_MODE_ITERATE_THROUGH_CHILDS_WITH_FOREIGN_KEY_AND_SAVE;
if( save_mode == DO_DELETE_ON_SAVE )
model_env->model_connector_mode = MORM_MODEL_CONNECTOR_MODE_ITERATE_THROUGH_CHILDS_WITHOUT_FOREIGN_KEY_AND_SAVE;
else
model_env->model_connector_mode = MORM_MODEL_CONNECTOR_MODE_ITERATE_THROUGH_CHILDS_WITH_FOREIGN_KEY_AND_SAVE;
map_fields();
}
@@ -495,15 +522,15 @@ bool Model::save_tree(bool save_whole_tree)
switch( save_mode )
{
case DO_DELETE_ON_SAVE:
result = remove(model_env->model_data);// without the whole tree
result = remove_tree(false);
break;
case DO_INSERT_ON_SAVE:
result = insert(model_env->model_data, false);
result = insert_tree(false);
break;
case DO_UPDATE_ON_SAVE:
result = update(model_env->model_data, false);
result = update_tree(false);
break;
case DO_NOTHING_ON_SAVE:
@@ -515,7 +542,11 @@ bool Model::save_tree(bool save_whole_tree)
if( save_whole_tree )
{
model_env->model_connector_mode = MORM_MODEL_CONNECTOR_MODE_ITERATE_THROUGH_CHILDS_WITHOUT_FOREIGN_KEY_AND_SAVE;
if( save_mode == DO_DELETE_ON_SAVE )
model_env->model_connector_mode = MORM_MODEL_CONNECTOR_MODE_ITERATE_THROUGH_CHILDS_WITH_FOREIGN_KEY_AND_SAVE;
else
model_env->model_connector_mode = MORM_MODEL_CONNECTOR_MODE_ITERATE_THROUGH_CHILDS_WITHOUT_FOREIGN_KEY_AND_SAVE;
map_fields();
}

63
src/model.h
View File

@@ -118,8 +118,8 @@ public:
virtual bool update(ModelData & model_data, bool update_whole_tree = true);
virtual void generate_remove_query(PT::TextStream & stream, ModelData * model_data = nullptr);
virtual bool remove(ModelData * model_data = nullptr);
virtual bool remove(ModelData & model_data);
virtual bool remove(ModelData * model_data = nullptr, bool remove_whole_tree = true);
virtual bool remove(ModelData & model_data, bool remove_whole_tree = true);
virtual bool save(ModelData * model_data = nullptr, bool save_whole_tree = true);
virtual bool save(ModelData & model_data, bool save_whole_tree = true);
@@ -188,6 +188,7 @@ protected:
virtual bool insert_tree(bool insert_whole_tree);
virtual bool update_tree(bool update_whole_tree);
virtual bool remove_tree(bool remove_whole_tree);
virtual bool save_tree(bool save_whole_tree);
virtual void map_values_from_query();
@@ -672,6 +673,8 @@ protected:
template<typename FieldValue>
void field_generic(const wchar_t * db_field_name, const wchar_t * flat_field_name, FieldValue & field_value, bool insertable, bool updatable, bool is_primary_key)
{
PT::Log * log = model_connector->get_logger();
if( model_connector && model_env )
{
if( model_env->model_connector_mode == MORM_MODEL_CONNECTOR_MODE_SET_FIELD_VALUE )
@@ -689,8 +692,13 @@ protected:
}
else
{
// IMPROVE ME
// put some log here
// the log has to be generated by a parent call
// it should compare model_env->field_index with the number of keys
// if( log )
// {
// // IMPROVE ME a better log message is required
// (*log) << PT::Log::log1 << "Morm: incorrect number of keys found in model objects" << PT::Log::logend;
// }
}
}
}
@@ -706,8 +714,12 @@ protected:
}
else
{
// IMPROVE ME
// put some log here
if( log )
{
// IMPROVE ME a better log message is required
// the log can be generated by a parent call
(*log) << PT::Log::log1 << "Morm: incorrect number of keys found in model objects" << PT::Log::logend;
}
}
}
@@ -1052,49 +1064,44 @@ protected:
field_model_set_parent_key(db_field_name, flat_field_name, field_model);
}
if( model_env->model_connector_mode == MORM_MODEL_CONNECTOR_MODE_ITERATE_THROUGH_CHILDS_WITH_FOREIGN_KEY_AND_INSERT && has_foreign_key )
if( !is_empty_field(db_field_name) )
{
if( !is_empty_field(db_field_name) )
if( model_env->model_connector_mode == MORM_MODEL_CONNECTOR_MODE_ITERATE_THROUGH_CHILDS_WITH_FOREIGN_KEY_AND_INSERT && has_foreign_key )
{
field_model.insert_tree(true);
}
}
if( model_env->model_connector_mode == MORM_MODEL_CONNECTOR_MODE_ITERATE_THROUGH_CHILDS_WITHOUT_FOREIGN_KEY_AND_INSERT && !has_foreign_key )
{
if( !is_empty_field(db_field_name) )
if( model_env->model_connector_mode == MORM_MODEL_CONNECTOR_MODE_ITERATE_THROUGH_CHILDS_WITHOUT_FOREIGN_KEY_AND_INSERT && !has_foreign_key )
{
field_model.insert_tree(true);
}
}
if( model_env->model_connector_mode == MORM_MODEL_CONNECTOR_MODE_ITERATE_THROUGH_CHILDS_WITH_FOREIGN_KEY_AND_UPDATE && has_foreign_key )
{
if( !is_empty_field(db_field_name) )
if( model_env->model_connector_mode == MORM_MODEL_CONNECTOR_MODE_ITERATE_THROUGH_CHILDS_WITH_FOREIGN_KEY_AND_UPDATE && has_foreign_key )
{
field_model.update_tree(true);
}
}
if( model_env->model_connector_mode == MORM_MODEL_CONNECTOR_MODE_ITERATE_THROUGH_CHILDS_WITHOUT_FOREIGN_KEY_AND_UPDATE && !has_foreign_key )
{
if( !is_empty_field(db_field_name) )
if( model_env->model_connector_mode == MORM_MODEL_CONNECTOR_MODE_ITERATE_THROUGH_CHILDS_WITHOUT_FOREIGN_KEY_AND_UPDATE && !has_foreign_key )
{
field_model.update_tree(true);
}
}
if( model_env->model_connector_mode == MORM_MODEL_CONNECTOR_MODE_ITERATE_THROUGH_CHILDS_WITH_FOREIGN_KEY_AND_SAVE && has_foreign_key )
{
if( !is_empty_field(db_field_name) )
if( model_env->model_connector_mode == MORM_MODEL_CONNECTOR_MODE_ITERATE_THROUGH_CHILDS_WITH_FOREIGN_KEY_AND_REMOVE && has_foreign_key )
{
field_model.remove_tree(true);
}
if( model_env->model_connector_mode == MORM_MODEL_CONNECTOR_MODE_ITERATE_THROUGH_CHILDS_WITHOUT_FOREIGN_KEY_AND_REMOVE && !has_foreign_key )
{
field_model.remove_tree(true);
}
if( model_env->model_connector_mode == MORM_MODEL_CONNECTOR_MODE_ITERATE_THROUGH_CHILDS_WITH_FOREIGN_KEY_AND_SAVE && has_foreign_key )
{
field_model.save_tree(true);
}
}
if( model_env->model_connector_mode == MORM_MODEL_CONNECTOR_MODE_ITERATE_THROUGH_CHILDS_WITHOUT_FOREIGN_KEY_AND_SAVE && !has_foreign_key )
{
if( !is_empty_field(db_field_name) )
if( model_env->model_connector_mode == MORM_MODEL_CONNECTOR_MODE_ITERATE_THROUGH_CHILDS_WITHOUT_FOREIGN_KEY_AND_SAVE && !has_foreign_key )
{
field_model.save_tree(true);
}

5
src/modelconnector.cpp
View File

@@ -71,6 +71,11 @@ void ModelConnector::set_logger(PT::Log & log)
this->log = &log;
}
PT::Log * ModelConnector::get_logger()
{
return log;
}
void ModelConnector::deallocate_stream()

1
src/modelconnector.h
View File

@@ -62,6 +62,7 @@ public:
virtual void set_logger(PT::Log * log);
virtual void set_logger(PT::Log & log);
virtual PT::Log * get_logger();
virtual void set_stream(PT::TextStream & stream);
virtual PT::TextStream * get_stream();

9
src/morm_types.h
View File

@@ -57,11 +57,14 @@
#define MORM_MODEL_CONNECTOR_MODE_ITERATE_THROUGH_CHILDS_WITH_FOREIGN_KEY_AND_SAVE 12
#define MORM_MODEL_CONNECTOR_MODE_ITERATE_THROUGH_CHILDS_WITHOUT_FOREIGN_KEY_AND_SAVE 13
#define MORM_MODEL_CONNECTOR_MODE_SET_PARENT_ID 14
#define MORM_MODEL_CONNECTOR_MODE_ITERATE_THROUGH_CHILDS_WITH_FOREIGN_KEY_AND_REMOVE 14
#define MORM_MODEL_CONNECTOR_MODE_ITERATE_THROUGH_CHILDS_WITHOUT_FOREIGN_KEY_AND_REMOVE 15
#define MORM_MODEL_CONNECTOR_MODE_ITERATE_PRIMARY_KEY_VALUES 15
#define MORM_MODEL_CONNECTOR_MODE_SET_PARENT_ID 16
#define MORM_MODEL_CONNECTOR_MODE_SET_FIELD_VALUE 16
#define MORM_MODEL_CONNECTOR_MODE_ITERATE_PRIMARY_KEY_VALUES 17
#define MORM_MODEL_CONNECTOR_MODE_SET_FIELD_VALUE 18

5
src/setfieldvaluehelper.h
View File

@@ -90,7 +90,11 @@ public:
{
const wchar_t * db_field_name;
const wchar_t * flat_field_name;
// IMPROVE ME
// instead of FieldValueBase can we have only a pointer to void (to the value object) and a pointer to std::type_info?
FieldValueBase * field_value_base;
bool auto_remove_field_value_object;
Item()
@@ -106,6 +110,7 @@ public:
}
};
std::vector<Item> item_tab;