本文整理汇总了C++中TableDescriptor::getNumberOfAttribute方法的典型用法代码示例。如果您正苦于以下问题：C++ TableDescriptor::getNumberOfAttribute方法的具体用法？C++ TableDescriptor::getNumberOfAttribute怎么用？C++ TableDescriptor::getNumberOfAttribute使用的例子？那么恭喜您, 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::getNumberOfAttribute方法的1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: InsertData
void InsertData(Catalog *catalog, Node *node, ResultSet *&result_set, bool &result_flag, string &error_msg, string &info) {
bool has_warning = false;
bool is_correct = true;
bool is_all_col = false;
Insert_stmt *insert_stmt = (Insert_stmt *)node;
string table_name(insert_stmt->tablename);
TableDescriptor *table = Environment::getInstance()->getCatalog()->getTable(table_name);
if(table == NULL)
{
// ASTParserLogging::elog("The table %s does not exist!", table_name.c_str());
error_msg = "The table "+table_name+" does not exist!";
result_flag = false;
result_set = NULL;
return;
}
unsigned col_count = 0;
Columns *col = (Columns *)insert_stmt->col_list;
if (col == NULL) { // insert all columns
is_all_col = true;
}
else { // get insert column count
++col_count;
while(col = (Columns *)col->next) ++col_count;
}
Insert_val_list *insert_value_list = (Insert_val_list*)insert_stmt->insert_val_list;
if (insert_value_list == NULL) {
// ASTParserLogging::elog("No value!");
error_msg = "No value!";
result_flag = false;
result_set = NULL;
return;
}
ostringstream ostr;
int changed_row_num = 0;
while(insert_value_list) // 循环获得 （……），（……），（……）中的每一个（……）
{
// make sure: the insert column count = insert value count = used column count = used value count
// init
Insert_vals *insert_value = (Insert_vals *)insert_value_list->insert_vals;
col = (Columns *)insert_stmt->col_list;
if (is_all_col) // insert all columns
{
// by scdong: Claims adds a default row_id attribute for all tables which is attribute(0), when inserting tuples we should begin to construct the string_tuple from the second attribute.
for(unsigned int position = 1; position < table->getNumberOfAttribute(); position++)
{
// check value count
if (insert_value == NULL)
{
// ASTParserLogging::elog("Value count is too few");
is_correct = false;
error_msg = "Value count is too few";
result_flag = false;
result_set = NULL;
break;
}
// insert value to ostringstream and if has warning return 1; look out the order!
has_warning = InsertValueToStream(insert_value, table, position, ostr) || has_warning;
// move back
insert_value = (Insert_vals*)insert_value->next;
ostr<<"|";
}
if (!is_correct) break;
// check insert value count
if (insert_value)
{
// ASTParserLogging::elog("Value count is too many");
error_msg = "Value count is too many";
result_flag = false;
result_set = NULL;
is_correct = false;
break;
}
}
else //insert part of columns
{
// get insert value count and check whether it match column count
unsigned insert_value_count = 0;
while (insert_value)
{
++insert_value_count;
insert_value = (Insert_vals*)insert_value->next;
}
if (insert_value_count != col_count)
{
// ASTParserLogging::elog("Column count doesn't match value count");
error_msg = "Column count doesn't match value count";
result_flag = false;
result_set = NULL;
is_correct = false;
break;
//.........这里部分代码省略.........