/afs/cs.wisc.edu/u/n/w/nwilliam/private/workspace/Quut/src/catalog.h

#pragma once

#include "filescan.h"

namespace badgerdb {

#define RELCATNAME    "relcat"

#define ATTRCATNAME   "attrcat"

#define MAXNAMESIZE   32

#define MAXSTRINGLEN  255


typedef struct
{
  char relName[MAXNAMESIZE];

  int attrCnt;
  
  int indexCnt;
} RelDesc;


typedef struct {
  char relName[MAXNAMESIZE];

  char attrName[MAXNAMESIZE];

  int  attrType;

  int  attrLen;

  void *attrValue;                         
} attrInfo; 


class RelCatalog : public FileScan {
 public:
  RelCatalog(BufMgr *bufferMgr);

  void getInfo(const std::string &relation, RelDesc &reldesc);

  void addInfo(RelDesc &reldesc);

  void removeInfo(const std::string & relation);

  void createRel(const std::string &relation, int attrCnt, const attrInfo attrList[]);

  void destroyRel(const std::string & relation);

  void addIndex(const std::string &relation, const std::string &attrName);

  void dropIndex(const std::string &relation, const std::string &attrName);

  void help(const std::string &rName);          // relation may be NULL

  ~RelCatalog();
};


typedef struct {
  char relName[MAXNAMESIZE];

  char attrName[MAXNAMESIZE];

  int attrOffset;

  int attrType;

  int attrLen;

  int indexed;
} AttrDesc;


class AttrCatalog : public FileScan
{
 friend class RelCatalog;

 public:
  AttrCatalog(BufMgr *bufferMgr);

  void getInfo(const std::string &relation, const std::string &attrName, AttrDesc &attrdesc);

  void addInfo(AttrDesc &attrdesc);

  void removeInfo(const std::string &relation, const std::string &attrName);

  void getRelInfo(const std::string &relation, int &attrCnt, AttrDesc *&attrs);

  void dropRelation(const std::string &relation);
  
  void addIndex(const std::string &relation, const std::string &attrName);

  void dropIndex(const std::string &relation, const std::string &attrName);

  ~AttrCatalog();
};

}

extern badgerdb::RelCatalog *relCat;
extern badgerdb::AttrCatalog *attrCat;