TSQLStructure

This is hierarchical structure, which is created when data is written by TBufferSQL2. It contains data all structural information such: version of written class, data member types of that class, value for each data member and so on.

Such structure in some sense similar to XML node and subnodes structure Once it created, it converted to SQL statements, which are submitted to database server.

class TSQLColumnData : public TObject

class TSQLTableData : public TObject

class

TSQLColumnData

protected:
   TString fName;   ///<!  name of the table column
   TString fType;   ///<!  type of the table column
   TString fValue;  ///<!  value of the table column
   Bool_t fNumeric; ///<!  for numeric quotes (double quotes) are not required
public:
   TSQLColumnData();
   TSQLColumnData(const char *name, const char *sqltype, const char *value, Bool_t numeric);

   TSQLColumnData(const char *name, Long64_t value);
   virtual ~TSQLColumnData();

   virtual const char *GetName() const { return fName.Data(); }
   const char *GetType() const { return fType.Data(); }
   const char *GetValue() const { return fValue.Data(); }
   Bool_t IsNumeric() const { return fNumeric; }

TSQLTableData

protected:
   TSQLFile *fFile;      ///<!
   TSQLClassInfo *fInfo; ///<!
   TObjArray fColumns;   ///<! collection of columns
   TObjArray *fColInfos; ///<! array with TSQLClassColumnInfo, used later for TSQLClassInfo

   TString DefineSQLName(const char *fullname);
   Bool_t HasSQLName(const char *sqlname);

public:
   TSQLTableData(TSQLFile *f = 0, TSQLClassInfo *info = 0);
   virtual ~TSQLTableData();

   void AddColumn(const char *name, Long64_t value);
   void AddColumn(const char *name, const char *sqltype, const char *value, Bool_t numeric);

   TObjArray *TakeColInfos();

   Int_t GetNumColumns();
   const char *GetColumn(Int_t n);
   Bool_t IsNumeric(Int_t n);

class TSQLStructure : public TObject

protected:
   Bool_t CheckNormalClassPair(TSQLStructure *vers, TSQLStructure *info);

   Long64_t FindMaxObjectId();
   void PerformConversion(TSqlRegistry *reg, TSqlRawBuffer *blobs, const char *topname, Bool_t useblob = kFALSE);
   Bool_t StoreObject(TSqlRegistry *reg, Long64_t objid, TClass *cl, Bool_t registerobj = kTRUE);
   Bool_t StoreObjectInNormalForm(TSqlRegistry *reg);
   Bool_t StoreClassInNormalForm(TSqlRegistry *reg);
   Bool_t StoreElementInNormalForm(TSqlRegistry *reg, TSQLTableData *columns);
   Bool_t TryConvertObjectArray(TSqlRegistry *reg, TSqlRawBuffer *blobs);

   Bool_t StoreTObject(TSqlRegistry *reg);
   Bool_t StoreTString(TSqlRegistry *reg);
   Bool_t RecognizeTString(const char *&value);

   TSQLStructure *fParent; //!
   Int_t fType;            //!
   const void *fPointer;   //!
   TString fValue;         //!
   Int_t fArrayIndex;      //!
   Int_t fRepeatCnt;       //!
   TObjArray fChilds;      //!

public:
   TSQLStructure();
   virtual ~TSQLStructure();

   TSQLStructure *GetParent() const { return fParent; }
   void SetParent(TSQLStructure *p) { fParent = p; }
   Int_t NumChilds() const;
   TSQLStructure *GetChild(Int_t n) const;

   void SetType(Int_t typ) { fType = typ; }
   Int_t GetType() const { return fType; }

   // this part requried for writing to SQL tables
   void SetObjectRef(Long64_t refid, const TClass *cl);
   void SetObjectPointer(Long64_t ptrid);
   void SetVersion(const TClass *cl, Int_t version = -100);
   void SetClassStreamer(const TClass *cl);
   void SetStreamerInfo(const TStreamerInfo *info);
   void SetStreamerElement(const TStreamerElement *elem, Int_t number);
   void SetCustomClass(const TClass *cl, Version_t version);
   void SetCustomElement(TStreamerElement *elem);
   void SetValue(const char *value, const char *tname = 0);
   void SetArrayIndex(Int_t indx, Int_t cnt = 1);
   void SetArray(Int_t sz = -1);
   void ChangeValueOnly(const char *value);

   TClass *GetObjectClass() const;
   TClass *GetVersionClass() const;
   TStreamerInfo *GetStreamerInfo() const;
   TStreamerElement *GetElement() const;
   Int_t GetElementNumber() const;
   TClass *GetCustomClass() const;
   Version_t GetCustomClassVersion() const;
   Bool_t GetClassInfo(TClass *&cl, Version_t &version);
   const char *GetValueType() const;
   const char *GetValue() const;
   Int_t GetArrayIndex() const { return fArrayIndex; }
   Int_t GetRepeatCounter() const { return fRepeatCnt; }

   void Add(TSQLStructure *child);
   void AddVersion(const TClass *cl, Int_t version = -100);
   void AddValue(const char *value, const char *tname = 0);
   void ChildArrayIndex(Int_t index, Int_t cnt = 1);

   // this is part specially for reading of sql tables

   Long64_t DefineObjectId(Bool_t recursive = kTRUE);

   void SetObjectData(TSQLObjectData *objdata);
   void AddObjectData(TSQLObjectData *objdata);
   TSQLObjectData *GetObjectData(Bool_t search = false);

   virtual void Print(Option_t *option = "") const;
   void PrintLevel(Int_t level) const;

   Bool_t ConvertToTables(TSQLFile *f, Long64_t keyid, TObjArray *cmds);

   Int_t LocateElementColumn(TSQLFile *f, TBufferSQL2 *buf, TSQLObjectData *data);

   static Bool_t UnpackTObject(TSQLFile *f, TBufferSQL2 *buf, TSQLObjectData *data, Long64_t objid, Int_t clversion);
   static Bool_t UnpackTString(TSQLFile *f, TBufferSQL2 *buf, TSQLObjectData *data, Long64_t objid, Int_t clversion);
   static Bool_t IsNumericType(Int_t typ);
   static const char *GetSimpleTypeName(Int_t typ);
   static TString MakeArrayIndex(TStreamerElement *elem, Int_t n);
   static Int_t DefineElementColumnType(TStreamerElement *elem, TSQLFile *f);
   static TString DefineElementColumnName(TStreamerElement *elem, TSQLFile *f, Int_t indx = 0);
   static void AddStrBrackets(TString &s, const char *quote);

   enum ESQLTypes {
      kSqlObject = 10001,
      kSqlPointer = 10002,
      kSqlVersion = 10003,
      kSqlStreamerInfo = 10004,
      kSqlClassStreamer = 10005,
      kSqlElement = 10006,
      kSqlValue = 10007,
      kSqlArray = 10008,
      kSqlObjectData = 10009,
      kSqlCustomClass = 10010,
      kSqlCustomElement = 10011
   };

   enum ESQLColumns {
      kColUnknown = 0,
      kColSimple = 1,
      kColSimpleArray = 2,
      kColParent = 3,
      kColObject = 4,
      kColObjectArray = 5,
      kColNormObject = 6,
      kColNormObjectArray = 7,
      kColObjectPtr = 8,
      kColTString = 9,
      kColRawData = 10
   };

   enum ESQLIdType { kIdTable = 0, kIdRawTable = 1, kIdColumn = 2 };

// text constants, used in SQL I/O

namespace sqlio {

extern Long64_t atol64(const char *value);

extern const Int_t Ids_NullPtr;
extern const Int_t Ids_RootDir;
extern const Int_t Ids_TSQLFile;
extern const Int_t Ids_StreamerInfos;
extern const Int_t Ids_FirstKey;
extern const Int_t Ids_FirstObject;

extern const char *ObjectRef;
extern const char *ObjectRef_Arr;
extern const char *ObjectPtr;
extern const char *ObjectInst;
extern const char *Version;
extern const char *TObjectUniqueId;
extern const char *TObjectBits;
extern const char *TObjectProcessId;
extern const char *TStringValue;
extern const char *IndexSepar;
extern const char *RawSuffix;
extern const char *ParentSuffix;
extern const char *ObjectSuffix;
extern const char *PointerSuffix;
extern const char *StrSuffix;
extern const char *LongStrPrefix;

extern const char *Array;
extern const char *Bool;
extern const char *Char;
extern const char *Short;
extern const char *Int;
extern const char *Long;
extern const char *Long64;
extern const char *Float;
extern const char *Double;
extern const char *UChar;
extern const char *UShort;
extern const char *UInt;
extern const char *ULong;
extern const char *ULong64;
extern const char *CharStar;
extern const char *True;
extern const char *False;

extern const char *KeysTable;
extern const char *KeysTableIndex;
extern const char *KT_Name;
extern const char *KT_Title;
extern const char *KT_Datetime;
extern const char *KT_Cycle;
extern const char *KT_Class;

extern const char *DT_Create;
extern const char *DT_Modified;
extern const char *DT_UUID;

extern const char *ObjectsTable;
extern const char *ObjectsTableIndex;
extern const char *OT_Class;
extern const char *OT_Version;

extern const char *IdsTable;
extern const char *IdsTableIndex;
extern const char *IT_TableID;
extern const char *IT_SubID;
extern const char *IT_Type;
extern const char *IT_FullName;
extern const char *IT_SQLName;
extern const char *IT_Info;

extern const char *BT_Field;
extern const char *BT_Value;

extern const char *StringsTable;
extern const char *ST_Value;

extern const char *ConfigTable;
extern const char *CT_Field;
extern const char *CT_Value;

extern const char *cfg_Version;
extern const char *cfg_UseSufixes;
extern const char *cfg_ArrayLimit;
extern const char *cfg_TablesType;
extern const char *cfg_UseTransactions;
extern const char *cfg_UseIndexes;
extern const char *cfg_LockingMode;
extern const char *cfg_ModifyCounter;
}
© Hongyi Wu            updated: 2019-01-07 15:32:43

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