本文整理汇总了C++中TableDescriptor::getAttributes方法的典型用法代码示例。如果您正苦于以下问题：C++ TableDescriptor::getAttributes方法的具体用法？C++ TableDescriptor::getAttributes怎么用？C++ TableDescriptor::getAttributes使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类TableDescriptor的用法示例。
在下文中一共展示了TableDescriptor::getAttributes方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: analyse
void Analyzer::analyse(TableID table_id, analysis_level level) {
TableStatistic* tab_stat =
StatManager::getInstance()->getTableStatistic(table_id);
TableDescriptor* table = Catalog::getInstance()->getTable(table_id);
if (tab_stat == 0) {
// LogicalOperator * scan = new LogicalScan(table->getProjectoin(0));
// std::vector<Attribute> group_by_attributes;
// std::vector<Attribute> aggregation_attributes;
//
// aggregation_attributes.push_back(Attribute(ATTRIBUTE_ANY));
//
// std::vector<BlockStreamAggregationIterator::State::aggregation>
// aggregation_function;
// aggregation_function.push_back(
// BlockStreamAggregationIterator::State::count);
// LogicalOperator* agg = new Aggregation(group_by_attributes,
// aggregation_attributes,
// aggregation_function, scan);
// LogicalOperator* root = new LogicalQueryPlanRoot(
// 0, agg, LogicalQueryPlanRoot::RESULTCOLLECTOR);
//
// BlockStreamIteratorBase* collector = root->getIteratorTree(
// 1024 * 64 - sizeof(unsigned));
// collector->open();
// collector->next(0);
// collector->close();
// ResultSet* resultset = collector->getResultSet();
// ResultSet::Iterator it = resultset->createIterator();
// BlockStreamBase::BlockStreamTraverseIterator* b_it = it.nextBlock()
// ->createIterator();
// const unsigned long tuple_count = *(unsigned
// long*) b_it->nextTuple();
// BlockStreamBase* block;
// while (block = it.nextBlock()) {
// BlockStreamBase::BlockStreamTraverseIterator* b_it =
// block->createIterator();
//
// }
// tab_stat = new TableStatistic();
// tab_stat->number_of_tuples_ = tuple_count;
// printf("Statistics for table %s is
// gathered!\n",Catalog::getInstance()->getTable(table_id)
// ->getTableName().c_str());
// tab_stat->print();
// StatManager::getInstance()->setTableStatistic(table_id, tab_stat);
// resultset->destory();
// root->~LogicalOperator();
compute_table_stat(table_id);
}
if (level == a_l_attribute) {
std::vector<Attribute> attribute_list = table->getAttributes();
for (unsigned i = 0; i < attribute_list.size(); i++) {
compute_attribute_stat(attribute_list[i].getID());
}
}
}示例2: Execute
RetCode DescExec::Execute(ExecutedResult* exec_result) {
SemanticContext sem_cnxt;
RetCode ret = desc_stmt_ast_->SemanticAnalisys(&sem_cnxt);
if (rSuccess != ret) {
exec_result->error_info_ =
"Semantic analysis error.\n" + sem_cnxt.error_msg_;
exec_result->status_ = false;
LOG(ERROR) << "semantic analysis error result= : " << ret;
cout << "semantic analysis error result= : " << ret << endl;
return ret;
}
ostringstream ostr;
Catalog* local_catalog = Environment::getInstance()->getCatalog();
TableDescriptor* table = local_catalog->getTable(desc_stmt_ast_->table_name_);
for (int i = 0; i < table->getAttributes().size(); i++) {
desc_stmt_ast_->column_name_.push_back(table->getAttributes()[i].attrName);
// extra and is_key not used now.
desc_stmt_ast_->extra_.push_back("");
desc_stmt_ast_->is_key_.push_back("");
desc_stmt_ast_->size_.push_back(
table->getAttributes()[i].attrType->get_length());
if (table->getAttributes()[i].attrType->nullable) {
desc_stmt_ast_->nullable_.push_back("YES");
} else {
desc_stmt_ast_->nullable_.push_back("NO");
}
switch (table->getAttributes()[i].attrType->type) {
case t_smallInt:
desc_stmt_ast_->type_.push_back("small int");
desc_stmt_ast_->default_value_.push_back("0");
break;
case t_int:
desc_stmt_ast_->type_.push_back("int");
desc_stmt_ast_->default_value_.push_back("0");
break;
case t_u_long:
desc_stmt_ast_->type_.push_back("unsigned long");
desc_stmt_ast_->default_value_.push_back("0");
break;
case t_float:
desc_stmt_ast_->type_.push_back("float");
desc_stmt_ast_->default_value_.push_back("0.0");
break;
case t_double:
desc_stmt_ast_->type_.push_back("double");
desc_stmt_ast_->default_value_.push_back("0.0");
break;
case t_string:
desc_stmt_ast_->type_.push_back("string");
desc_stmt_ast_->default_value_.push_back("NULL");
break;
case t_date:
desc_stmt_ast_->type_.push_back("date");
desc_stmt_ast_->default_value_.push_back("1400-01-01");
break;
case t_time:
desc_stmt_ast_->type_.push_back("time");
desc_stmt_ast_->default_value_.push_back("00:00:00.000000");
break;
case t_datetime:
desc_stmt_ast_->type_.push_back("date and time");
desc_stmt_ast_->default_value_.push_back("1400-01-01 00:00:00.000000");
break;
case t_decimal:
desc_stmt_ast_->type_.push_back("decimal");
desc_stmt_ast_->default_value_.push_back("0.0");
break;
case t_boolean:
desc_stmt_ast_->type_.push_back("boolean");
desc_stmt_ast_->default_value_.push_back("false");
break;
case t_u_smallInt:
desc_stmt_ast_->type_.push_back("unsigned small int");
desc_stmt_ast_->default_value_.push_back("0.0");
break;
case t_date_day:
desc_stmt_ast_->type_.push_back("date day");
desc_stmt_ast_->default_value_.push_back("");
break;
case t_date_week:
desc_stmt_ast_->type_.push_back("date week");
desc_stmt_ast_->default_value_.push_back("");
break;
case t_date_month:
desc_stmt_ast_->type_.push_back("date month");
desc_stmt_ast_->default_value_.push_back("");
break;
case t_date_year:
desc_stmt_ast_->type_.push_back("date year");
desc_stmt_ast_->default_value_.push_back("");
break;
case t_date_quarter:
desc_stmt_ast_->type_.push_back("date quarter");
desc_stmt_ast_->default_value_.push_back("");
break;
default:
desc_stmt_ast_->type_.push_back("unknown");
desc_stmt_ast_->default_value_.push_back("");
break;
//.........这里部分代码省略.........