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TPgSQLStatement.h
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1 // @(#)root/mysql:$Id$
2 // Author: Dennis Box (dbox@fnal.gov) 3/12/2007
3 
4 /*************************************************************************
5  * Copyright (C) 1995-2007, Rene Brun and Fons Rademakers. *
6  * All rights reserved. *
7  * *
8  * For the licensing terms see $ROOTSYS/LICENSE. *
9  * For the list of contributors see $ROOTSYS/README/CREDITS. *
10  *************************************************************************/
11 
12 #ifndef ROOT_TPgSQLStatement
13 #define ROOT_TPgSQLStatement
14 
15 #include "TSQLStatement.h"
16 
17 #include <libpq-fe.h>
18 #include <pg_config.h> // to get PG_VERSION_NUM
19 
20 #define pgsql_success(x) (((x) == PGRES_EMPTY_QUERY) \
21  || ((x) == PGRES_COMMAND_OK) \
22  || ((x) == PGRES_TUPLES_OK))
23 
24 struct PgSQL_Stmt_t {
25  PGconn *fConn;
26  PGresult *fRes;
27 };
28 
29 
30 class TPgSQLStatement : public TSQLStatement {
31 
32 private:
33  PgSQL_Stmt_t *fStmt; //! executed statement
34  Int_t fNumBuffers; //! number of statement parameters
35  char **fBind; //! array of data for input
36  char **fFieldName; //! array of column names
37  Int_t fWorkingMode; //! 1 - setting parameters, 2 - retrieving results
38  Int_t fIterationCount;//! number of iteration
39  int *fParamLengths; //! length of column
40  int *fParamFormats; //! data type (OID)
41  Int_t fNumResultRows;
42  Int_t fNumResultCols;
43 
44  Bool_t IsSetParsMode() const { return fWorkingMode==1; }
45  Bool_t IsResultSetMode() const { return fWorkingMode==2; }
46 
47  Bool_t SetSQLParamType(Int_t npar, int sqltype, bool sig, int sqlsize = 0);
48 
49  long double ConvertToNumeric(Int_t npar);
50  const char *ConvertToString(Int_t npar);
51 
52  void FreeBuffers();
53  void SetBuffersNumber(Int_t n);
54 
55  void ConvertTimeToUTC(const TString &PQvalue, Int_t& year, Int_t& month, Int_t& day, Int_t& hour, Int_t& min, Int_t& sec);
56 
57 public:
58  TPgSQLStatement(PgSQL_Stmt_t* stmt, Bool_t errout = kTRUE);
59  virtual ~TPgSQLStatement();
60 
61  virtual void Close(Option_t * = "");
62 
63  virtual Int_t GetBufferLength() const { return 1; }
64  virtual Int_t GetNumParameters();
65 
66  virtual Bool_t SetNull(Int_t npar);
67  virtual Bool_t SetInt(Int_t npar, Int_t value);
68  virtual Bool_t SetUInt(Int_t npar, UInt_t value);
69  virtual Bool_t SetLong(Int_t npar, Long_t value);
70  virtual Bool_t SetLong64(Int_t npar, Long64_t value);
71  virtual Bool_t SetULong64(Int_t npar, ULong64_t value);
72  virtual Bool_t SetDouble(Int_t npar, Double_t value);
73  virtual Bool_t SetString(Int_t npar, const char* value, Int_t maxsize = 256);
74  virtual Bool_t SetBinary(Int_t npar, void* mem, Long_t size, Long_t maxsize = 0x1000);
75  virtual Bool_t SetLargeObject(Int_t npar, void* mem, Long_t size, Long_t maxsize = 0x1000);
76  virtual Bool_t SetDate(Int_t npar, Int_t year, Int_t month, Int_t day);
77  virtual Bool_t SetTime(Int_t npar, Int_t hour, Int_t min, Int_t sec);
78  virtual Bool_t SetDatime(Int_t npar, Int_t year, Int_t month, Int_t day, Int_t hour, Int_t min, Int_t sec);
79  virtual Bool_t SetTimestamp(Int_t npar, Int_t year, Int_t month, Int_t day, Int_t hour, Int_t min, Int_t sec, Int_t frac = 0);
80  virtual Bool_t SetTimestamp(Int_t npar, const TTimeStamp& tm);
81 
82  virtual Bool_t NextIteration();
83 
84  virtual Bool_t Process();
85  virtual Int_t GetNumAffectedRows();
86 
87  virtual Bool_t StoreResult();
88  virtual Int_t GetNumFields();
89  virtual const char *GetFieldName(Int_t nfield);
90  virtual Bool_t NextResultRow();
91 
92  virtual Bool_t IsNull(Int_t npar);
93  virtual Int_t GetInt(Int_t npar);
94  virtual UInt_t GetUInt(Int_t npar);
95  virtual Long_t GetLong(Int_t npar);
96  virtual Long64_t GetLong64(Int_t npar);
97  virtual ULong64_t GetULong64(Int_t npar);
98  virtual Double_t GetDouble(Int_t npar);
99  virtual const char *GetString(Int_t npar);
100  virtual Bool_t GetBinary(Int_t npar, void* &mem, Long_t& size);
101  virtual Bool_t GetLargeObject(Int_t npar, void* &mem, Long_t& size);
102  virtual Bool_t GetDate(Int_t npar, Int_t& year, Int_t& month, Int_t& day);
103  virtual Bool_t GetTime(Int_t npar, Int_t& hour, Int_t& min, Int_t& sec);
104  virtual Bool_t GetDatime(Int_t npar, Int_t& year, Int_t& month, Int_t& day, Int_t& hour, Int_t& min, Int_t& sec);
105  virtual Bool_t GetTimestamp(Int_t npar, Int_t& year, Int_t& month, Int_t& day, Int_t& hour, Int_t& min, Int_t& sec, Int_t&);
106  virtual Bool_t GetTimestamp(Int_t npar, TTimeStamp& tm);
107 
108  ClassDef(TPgSQLStatement, 0); // SQL statement class for PgSQL DB
109 };
110 
111 #endif