Wolframe, 0.0.3

baseStatement.hpp
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36 
37 #ifndef _DATABASE_BASE_STATEMENT_HPP_INCLUDED
38 #define _DATABASE_BASE_STATEMENT_HPP_INCLUDED
39 
40 #include "database/statement.hpp"
41 
42 #include <vector>
43 #include <bitset>
44 
45 namespace _Wolframe {
46 namespace db {
47 
52 class BaseStatement : public Statement
53 {
54  public:
55  BaseStatement( );
56  BaseStatement( const BaseStatement &o );
57  explicit BaseStatement( const std::string &stmtStr );
58 
59  virtual void init( const std::string &stmtStr );
60 
61  virtual void clear( );
62 
63  virtual void substitute( bool checkForMissingPlaceholders = true );
64 
65  virtual void bind( const unsigned int idx, const types::Variant &value );
66 
67  virtual const std::string originalSQL( ) const;
68 
69  virtual const std::string nativeSQL( ) const;
70 
71  protected:
73  std::string m_stmtStr;
74 
76  unsigned int m_maxParam;
77 
78  private:
79  void parse( );
80 
81  public:
87  enum { MaxNofParams = 32 };
88 
89  private:
90  typedef std::pair<unsigned int, std::string> Element;
91 
93  std::vector<Element> m_data;
94 
96  std::string m_nativeStmt;
97 
99  std::bitset<MaxNofParams> m_usedIdx;
100 
102  std::bitset<MaxNofParams> m_setIdx;
103 };
104 
105 }}//namespace
106 #endif
107 
virtual void substitute(bool checkForMissingPlaceholders=true)
Trigger substitution (nativeSQL is valid after this call and not before!)
std::string m_stmtStr
The original SQL.
Definition: baseStatement.hpp:73
The interface of a statement SQL parameter substutution class.
Definition: statement.hpp:48
virtual const std::string nativeSQL() const
Returns the SQL statement with the native database placeholders or the data filled in (this is up to ...
std::bitset< MaxNofParams > m_setIdx
Remembers the placeholders bound to actual data.
Definition: baseStatement.hpp:102
The interface of an SQL statement parameter substutution class.
std::vector< Element > m_data
Remembers positions and parts of SQL snippets.
Definition: baseStatement.hpp:93
Forward declaration.
Definition: variant.hpp:65
virtual void init(const std::string &stmtStr)
Set new SQL statement.
virtual void bind(const unsigned int idx, const types::Variant &value)
Binds parameter at position idx with variant data in the format with Wolframe placeholders.
virtual void clear()
Clear current statement.
unsigned int m_maxParam
The maximum number of parsed placeholders so far.
Definition: baseStatement.hpp:76
Definition: baseStatement.hpp:87
std::bitset< MaxNofParams > m_usedIdx
Remembers the indexes used in the SQL statement.
Definition: baseStatement.hpp:99
virtual const std::string originalSQL() const
Returns the SQL statement as passed down to the database layer.
std::string m_nativeStmt
The SQL statement as understood by the database.
Definition: baseStatement.hpp:96
std::pair< unsigned int, std::string > Element
Definition: baseStatement.hpp:90
Implements basic parsing of the Wolframe SQL statement with placeholders, derived classes can steer h...
Definition: baseStatement.hpp:52