/Users/green/Documents/workspace/DavisDB_public/SystemManager.h

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/*
 * SystemManager.h
 *
 *  Created on: Apr 20, 2010
 *      Author: green
 */

#ifndef SYSTEMMANAGER_H_
#define SYSTEMMANAGER_H_

#include "Common.h"
#include "RecordFileScan.h"
#include "PageFileManager.h"
#include "RecordManager.h"
#include "IndexManager.h"
#include "RecordFileHandle.h"

static const uint MAX_DATABASE_NAME = 32;
static const uint MAX_RELATION_NAME = 32;
static const uint MAX_ATTRIBUTE_NAME = 32;

struct AttributeInfo {
        char name[MAX_ATTRIBUTE_NAME]; 
        AttributeType type;            
        int length;                        
};

class SystemManager {
public:
        static SystemManager* getInstance();

        ReturnCode createDb(const char *dbName);

        ReturnCode dropDb(const char* dbName);

        ReturnCode openDb(const char *dbName);

        ReturnCode closeDb();

        ReturnCode createTable(const char *relName, int attrCount,
                        AttributeInfo *attributes);

        ReturnCode dropTable(const char *relName);

        ReturnCode createIndex(const char *relName, const char *attrName);

        ReturnCode dropIndex(const char *relName, const char *attrName);

        ReturnCode load(const char *relName, const char *fileName);

        ReturnCode info();

        ReturnCode info(const char *relName);

        ReturnCode print(const char *relName);

        bool isOpen();

private:
        SystemManager();
        ~SystemManager();

        static const char* ATTRIBUTE_CATALOG;
        static const char* RELATION_CATALOG;
};

#endif /* SYSTEMMANAGER_H_ */

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