catalog.h

 
#ifndef CATALOG_H
#define CATALOG_H
 
#include "share/data_t.h"
#include <string>
#include "index/Index.h"
#include "buffer/buffer_manager.h"
#include <set>
 
 
#define ALL_TABLE_PATH PATH::CATALOG_PATH+"All_TableNames"
 
class CatalogManager{
public:
    CatalogManager(BufferManager *bfm);
 
    ~CatalogManager();
    void CreateTable(const std::string& table_name, Attribute &attr);
 
    void UpdateIndex(const std::string& table_name,const std::string& attr_name,const std::string& index_name);
 
    void DropTable(const std::string& table_name);
 
    void DropIndex(const std::string& table_name,const std::string& index_name);
 
    bool existTable(const std::string& table_name);
 
    bool existAttribute(const std::string& table_name, const std::string& attr_name);
 
    Attribute getAttribute(const std::string& table_name);
 
    Index getIndex(const std::string& table_name);
 
    std::string getIndexName(const std::string& table_name, const std::string& attr_name);
 
    std::string Index2Attr(const std::string& table_name, const std::string& attr_name,const std::string& index_name);
 
    void ShowTable(const std::string& table_name);
 
    void ShowAllTable();
 
    std::string indexName2table(std::string &index_name) const{
        auto iter = indexName2tableName.find(index_name);
        if (iter == indexName2tableName.end()) throw DB_INDEX_NOT_FOUND;
        return iter->second;
    }
 
private:
    std::map<std::string, std::string> indexName2tableName;
 
    void rewriteAttribute(const std::string &table_name, const Attribute &attr, const Index &index);
 
private:
    BufferManager *_bfm;
    std::set<std::string> tableNames; 
};
 
#endif