public static object EvalSQL(string SQL, DataRow drParams, int?appID = null)
{
if (!MyUtils.IsEmpty(SQL))
{
DataTable dt = GetBySQL(SQL, drParams, appID);
if (MyWebUtils.GetNumberOfRows(dt) > 0 && MyWebUtils.GetNumberOfColumns(dt) > 0)
{
return(dt.Rows[0][0]);
}
}
return(null);
}
public static bool IsTrueSQL(string SQL, DataRow drParams, int?appID = null)
{
if (!MyUtils.IsEmpty(SQL))
{
DataTable dt = GetBySQL(SQL, drParams, appID);
if (MyWebUtils.GetNumberOfRows(dt) > 0 && MyWebUtils.GetNumberOfColumns(dt) > 0)
{
return(Convert.ToBoolean(MyUtils.Coalesce(dt.Rows[0][0], false)));
}
return(false);
}
return(true);
}
public DataTable SelectTable(object table, string view, object parameters, ref string script)
{
DataRow drParams = parameters as DataRow;
DataTable dt = null;
CiTable ciTable = table as CiTable;
if (ciTable != null)
{
if (parameters != null && parameters.GetType() == typeof(bool))
{
// Do nothing - but can't remember what this is for???
throw new System.Exception("Aha!");
}
else if (ciTable.SelectMacro != null)
{
CiMacro ciMacro = ciTable.SearchMacro;
if (ciMacro != null)
{
ciMacro.Run(drParams, true);
dt = ciMacro.ResultTable;
script = ciMacro.ResultScript;
}
}
else if (ciTable.DataSource != null)
{
dt = ciTable.DataTable;
}
if (dt == null)
{
dt = new DataTable();
}
AddExpressionColumns(ciTable, dt, drParams);
if (MyWebUtils.GetNumberOfColumns(dt) > 0 && !dt.Columns.Contains("RowKey"))
{
dt.Columns.Add("RowKey").Expression = CreateRowKeyExpression(ciTable.RowKey);
}
}
return(dt);
}
public static object Eval(XmlElement expressionElement, DataRow drParams, Type type)
{
object result = null;
if (!MyUtils.IsEmpty(expressionElement))
{
eLangType language = eLangType.literal;
string expression = expressionElement.InnerText;
string languageString = expressionElement.GetAttribute("lang");
if (!MyUtils.IsEmpty(languageString))
{
try
{
language = (eLangType)Enum.Parse(typeof(eLangType), languageString);
}
catch
{
// Do nothing
}
}
switch (language)
{
case eLangType.literal:
result = expression;
break;
case eLangType.column:
string columnName = expression;
if (drParams != null && drParams.Table.Columns.Contains(columnName))
{
result = drParams[columnName];
}
else
{
result = null;
}
break;
case eLangType.sql:
if (!MyUtils.IsEmpty(expression))
{
DataTable dt = GetBySQL(expression, drParams);
if (type == typeof(DataTable))
{
result = dt;
}
else if (type == typeof(DataRow))
{
if (MyWebUtils.GetNumberOfRows(dt) > 0)
{
result = dt.Rows[0];
}
}
else
{
if (MyWebUtils.GetNumberOfRows(dt) > 0 && MyWebUtils.GetNumberOfColumns(dt) > 0)
{
result = dt.Rows[0][0];
}
}
}
break;
case eLangType.xml:
result = expressionElement;
break;
}
}
if (MyUtils.IsEmpty(result))
{
if (type == typeof(bool))
{
result = false;
}
}
return(result);
}