static public string GetTableSelect(string provider, IDbConnection cn)
{
if (SqlEntries == null)
{
RdlEngineConfigInit();
}
SqlConfigEntry sce = SqlEntries[provider] as SqlConfigEntry;
if (sce == null)
{
if (cn != null)
{
OdbcConnection oc = cn as OdbcConnection;
if (oc != null && oc.Driver.ToLower().IndexOf("my") >= 0) // not a good way but ...
{
return("show tables"); // mysql syntax is non-standard
}
}
return("SELECT TABLE_NAME, TABLE_TYPE FROM INFORMATION_SCHEMA.TABLES ORDER BY 2, 1");
}
if (cn != null)
{
OdbcConnection oc = cn as OdbcConnection;
if (oc != null && oc.Driver.ToLower().IndexOf("my") >= 0) // not a good way but ...
{
return("show tables"); // mysql syntax is non-standard
}
}
return(sce.TableSelect);
}
static public bool DoParameterReplacement(string provider, IDbConnection cn)
{
if (SqlEntries == null)
{
RdlEngineConfigInit();
}
SqlConfigEntry sce = SqlEntries[provider] as SqlConfigEntry;
return(sce == null ? false : sce.ReplaceParameters);
}
public static IDbConnection GetConnection(string provider, string cstring)
{
IDbConnection cn = null;
switch (provider.ToLower())
{
case "sql":
// can't connect unless information provided;
// when user wants to set the connection programmatically this they should do this
if (cstring.Length > 0)
{
cn = new SqlConnection(cstring);
}
break;
case "odbc":
cn = new OdbcConnection(cstring);
break;
case "oledb":
cn = new OleDbConnection(cstring);
break;
default:
if (SqlEntries == null) // if never initialized; we should init
{
RdlEngineConfigInit();
}
SqlConfigEntry sce = SqlEntries[provider] as SqlConfigEntry;
if (sce == null || sce.CodeModule == null)
{
if (sce != null && sce.ErrorMsg != null) // error during initialization??
{
throw new Exception(sce.ErrorMsg);
}
break;
}
object[] args = new object[] { cstring };
Assembly asm = sce.CodeModule;
object o = asm.CreateInstance(sce.ClassName, false,
BindingFlags.CreateInstance, null, args, null, null);
if (o == null)
{
throw new Exception(string.Format("Unable to create instance of '{0}' for provider '{1}'", sce.ClassName, provider));
}
cn = o as IDbConnection;
break;
}
return(cn);
}
static void GetDataSource(IDictionary dsDir, XmlNode xNode)
{
string provider = null;
string codemodule = null;
string cname = null;
string inter = "SQL";
string tselect = null;
bool replaceparameters = false;
foreach (XmlNode xNodeLoop in xNode.ChildNodes)
{
if (xNodeLoop.NodeType != XmlNodeType.Element)
{
continue;
}
switch (xNodeLoop.Name)
{
case "DataProvider":
provider = xNodeLoop.InnerText;
break;
case "CodeModule":
codemodule = xNodeLoop.InnerText;
break;
case "Interface":
inter = xNodeLoop.InnerText;
break;
case "ClassName":
cname = xNodeLoop.InnerText;
break;
case "TableSelect":
tselect = xNodeLoop.InnerText;
break;
case "ReplaceParameters":
if (xNodeLoop.InnerText.ToLower() == "true")
{
replaceparameters = true;
}
break;
default:
break;
}
}
if (provider == null)
{
return; // nothing to do if no provider specified
}
SqlConfigEntry sce;
try
{ // load the module early; saves problems with concurrency later
string msg = null;
Assembly la = null;
if (codemodule != null && cname != null)
{
// check to see if the DLL has been previously loaded
// many of the DataProvider done by fyiReporting are in a single code module
foreach (SqlConfigEntry sc in dsDir.Values)
{
if (sc.FileName == codemodule &&
sc.CodeModule != null)
{
la = sc.CodeModule;
break;
}
}
if (la == null)
{
la = Utility.Assembly.AssemblyLoadFrom(codemodule);
}
if (la == null)
{
msg = string.Format("{0} could not be loaded", codemodule);
}
}
sce = new SqlConfigEntry(provider, codemodule, cname, la, tselect, msg);
dsDir.Add(provider, sce);
}
catch (Exception e)
{ // keep exception; if this DataProvided is ever useed we will see the message
sce = new SqlConfigEntry(provider, codemodule, cname, null, tselect, e.Message);
dsDir.Add(provider, sce);
}
sce.ReplaceParameters = replaceparameters;
}