Files
l7/L7/LSQConnection.h
SET aaacf88071 Added classes to manage simple tabular data of known structure using a
popup containing a wxGrid object.

BasePicker : Abstract class adding a popup to wxPickerBase  styled with
a wxTextCtrl.
BaseGridPicker : Abstract class adding a wxGrid in the popup.

JsonGridPickerCtrl : UI control storing the tabular data in a JSON
array.
LBoundJsonGridPicker : connect JsonGridPicker to database.
LGridJsonCellEditor : use LBoundJsonGridPicker in other wxGrid objects.
LGridJsonCellRenderer : render cell JSON data.

XmlGridPickerCtrl : UI control storing the tabular data in as XML
document.
LBoundXmlGridPicker : connect XmlGridPicker to database.
LGridXmlCellEditor : grid editor for LBoundXmlGridPicker.
LGridXmlCellRenderer : grid renderer for LBoundXmlGridPicker.

JsonHelper and XmlHelper : for applications to quickly get intent value
from database data..

The structure of managed tabular data :

Column 1 : Intent - this is what we want to store/edit. This can be
telephone numbers, email addresses, instant messaging addresses...
any single line piece of information that can exist many times for one
entity (person, company...).
Column 2 : Type - A short description of the intent : 'Home, Work,
Mobile, Fax, Other...'. It is displayed in a non editable wxComboBox.
Column 3 : Preferred - One line of data can be selected as the preferred
one. It is not mandatory, but it must be a single choice.
Column 4 : Notes - single line notes.

Adjust sql scripts and L7.dox.
Applied ANSI formatting style to all files.

Other changes :

Work around a nasty misbehavior.
Grid columns edited by a translated combobox expect full string
data as cell values. LResultSet::BEData() will report these mapped strings,
instead of database real data. LBoundComboBox::IsDirty() will always be
true even if the editor is unchanged once created.
Simplest workaround : disconnect m_BoundComboBox if unchanged.

LGridTextEditor::ProvideFormEditor() : set the form editor's value
explicitely.; wxTextCtrl does not interpret data it receives

LBoundControl::SetNull must be void.

LBoundGrid : Unbind:: instructions should limit to the widget's id, like Bind::

LConnection::GetReturnedKeys should return NULL.
LConnection::SetData should return void.

Notes : wxJSON must be configured with the same prefix as wxWidgets,
here /usr/local/{wxWidgets,wxWidgets-Release}.
2019-12-23 08:12:01 +01:00

109 lines
2.8 KiB
C++

/*
* File: LSQConnection.h
* Author: SET - nmset@netcourrier.com
* License : LGPL version 2.1
* Copyright SET, M. D. - © 2014
*
* Created on 25 mai 2014, 16:07
*/
#ifdef USE_LIBSQ
#ifndef LSQCONNECTION_H
#define LSQCONNECTION_H
#include <sqlite3.h>
#include <vector>
#include <wx/wx.h>
#include "LConnection.h"
/**
* SQLite namespace.
*
* Please note USE_LIBSQ pre-processor directive must be defined to include the SQLite backend.
*/
namespace SQ
{
#define CNSQMC wxString(_T("CNSQM"))
class SQresult;
/**
Minimalist class managing an SQLite3 connection; derives from LConnection.
*/
class LSQConnection : public LConnection
{
public:
LSQConnection();
/**
*
* @param newInfo : connection information. A file path, or memory/temporary database string instructions.
*/
LSQConnection(const wxString& newInfo);
/**
* The connection is closed in the destructor.
*/
virtual ~LSQConnection();
/**
*
* @return the last backend error message, may be NULL.
*/
const char* GetLastLibMessage() const;
/**
* Establishes a new connection, creating the SQLIte database if necessary.
* Does nothing if a connection already exists.
* @return true if a new connection is established, or if a connection already esists. False on error.
*/
bool Connect();
/**
*
* @return a pointer to the sqlite3 real database pointer.
*/
void * Get() const;
/**
* Checks if the sqlite3 pointer is not NULL.
* @return true if the sqlite3 pointer is not NULL.
*/
bool IsValid() const;
/**
* Closes the connection. Error message pointer is set to NULL.
*/
void Close();
/**
* Calls sqlite3_get_table and returns rows from a SELECT query.
* @param newSql a valid SQL statement.
* @return an untyped pointer to an SQresult referencing the data, or NULL if error.
*/
void * ExecuteSQL(const wxString& newSql);
/**
* Intended for database actions that do not fetch table rows. Calls sqlite3_exec.
* @param newSql : : a valid SQL statement.
* @return true on success, false otherwise.
*/
bool ExecuteUpdateSQL(const wxString& newSql);
/**
*
* @param col : unused
* @return an insert row identifier is always returned, even if the table does not have an autoincrement column.
*/
const wxAny GetReturnedValue(const unsigned int unused) const;
private:
sqlite3 * m_conn;
char * m_errMsg;
/**
* Forwards SQLite messages to InformLibMessage
* @param
*/
void InformSQMessage(const char * SQmsg) const;
wxArrayPtrVoid evtHandlers;
/**
* Informs application that registers LConnectionEvent handlers here.
* @param msg
*/
void InformLibMessage(const LInformation& msg) const;
};
}
#endif /* LSQCONNECTION_H */
#endif