本文整理汇总了C++中Catalog::getPrimaryAttr方法的典型用法代码示例。如果您正苦于以下问题：C++ Catalog::getPrimaryAttr方法的具体用法？C++ Catalog::getPrimaryAttr怎么用？C++ Catalog::getPrimaryAttr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Catalog的用法示例。
在下文中一共展示了Catalog::getPrimaryAttr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: main
int main()
{
Catalog CatalogManager;
table_t table;
table.name = "Persons";
table.attrNum = 3;
table.recordLength = 68;
table.attributes[0].name = "姓名";
table.attributes[0].isPrimary = false;
table.attributes[0].length = 32;
table.attributes[0].type = CHAR;
table.attributes[1].name = "性别";
table.attributes[1].isPrimary = false;
table.attributes[1].length = 32;
table.attributes[1].type = CHAR;
table.attributes[2].name = "学号";
table.attributes[2].isPrimary = true;
table.attributes[2].length = 8;
table.attributes[2].type = INT;
// 建表
cout << "---建表：" << endl;
CatalogManager.createTable(table);
cout << endl;
// 返回主键
cout << "---返回主键：" << endl;
attr_t attrTmp = CatalogManager.getPrimaryAttr("Persons");
printAttr(attrTmp);
cout << endl;
// 返回表
cout << "---返回表：" << endl;
table_t tableTmp = CatalogManager.findTable("Persons");
cout << tableTmp.name << " " << tableTmp.attrNum << " " << tableTmp.recordLength << endl;
for (int i = 0; i < tableTmp.attrNum; i++)
{
printAttr(tableTmp.attributes[i]);
}
cout << endl;
// 返回字段
cout << "---返回字段：" << endl;
attr_t attrTmp2 = CatalogManager.findAttr("Persons", "姓名");
printAttr(attrTmp2);
cout << endl;
// 表存在
cout << "---表存在：" << endl;
cout << CatalogManager.tableExist("Persons") << endl;
cout << CatalogManager.tableExist("a") << endl;
cout << endl;
// 建表
cout << "---建表：" << endl;
table.name = "Students";
CatalogManager.createTable(table);
cout << endl;
// 表存在
cout << "---表存在：" << endl;
cout << CatalogManager.tableExist("Persons") << endl;
cout << CatalogManager.tableExist("Students") << endl;
cout << endl;
// 字段存在
cout << "---字段存在：" << endl;
cout << "我想找 Students 中的 '学号' 字段" << endl;
cout << CatalogManager.attrExist("Students", "学号") << endl;
cout << "我想找 Students 中的 '什么鸟啊' 字段" << endl;
cout << CatalogManager.attrExist("Students", "什么鸟啊") << endl;
cout << endl;
// 删表
cout << "---删表：" << endl;
CatalogManager.deleteTable(table);
cout << endl;
// 表存在
cout << "---表存在：" << endl;
cout << CatalogManager.tableExist("Persons") << endl;
cout << CatalogManager.tableExist("Students") << endl;
cout << endl;
return 0;
}