// Handle parsing of function in final pass
override public void FinalPass()
{
if (_Value != null)
_Value.FinalPass();
// Resolve the field if specified
if (_DataField != null)
{
Fields f = (Fields) this.Parent;
DataSetDefn ds = (DataSetDefn) f.Parent;
Query q = ds.Query;
if (q != null && q.Columns != null)
{
qc = (QueryColumn) q.Columns[_DataField];
if (qc == null)
{ // couldn't find the data field
OwnerReport.rl.LogError(8, "DataField '" + _DataField + "' not part of query.");
}
}
}
return;
}
// Handle parsing of function in final pass
override public void FinalPass()
{
if (_CommandText != null)
_CommandText.FinalPass();
if (_QueryParameters != null)
_QueryParameters.FinalPass();
// verify the data source
DataSourceDefn ds=null;
if (OwnerReport.DataSourcesDefn != null &&
OwnerReport.DataSourcesDefn.Items != null)
{
ds = OwnerReport.DataSourcesDefn[_DataSourceName];
}
if (ds == null)
{
OwnerReport.rl.LogError(8, "Query references unknown data source '" + _DataSourceName + "'");
return;
}
_DataSourceDefn = ds;
IDbConnection cnSQL = ds.SqlConnect(null);
if (cnSQL == null || _CommandText == null)
return;
// Treat this as a SQL statement
String sql = _CommandText.EvaluateString(null, null);
IDbCommand cmSQL=null;
IDataReader dr=null;
try
{
cmSQL = cnSQL.CreateCommand();
cmSQL.CommandText = AddParametersAsLiterals(null, cnSQL, sql, false);
if (this._QueryCommandType == QueryCommandTypeEnum.StoredProcedure)
cmSQL.CommandType = CommandType.StoredProcedure;
AddParameters(null, cnSQL, cmSQL, false);
dr = cmSQL.ExecuteReader(CommandBehavior.SchemaOnly);
if (dr.FieldCount < 10)
_Columns = new ListDictionary(); // Hashtable is overkill for small lists
else
_Columns = new Hashtable(dr.FieldCount);
for (int i=0; i < dr.FieldCount; i++)
{
QueryColumn qc = new QueryColumn(i, dr.GetName(i), Type.GetTypeCode(dr.GetFieldType(i)) );
try { _Columns.Add(qc.colName, qc); }
catch // name has already been added to list:
{ // According to the RDL spec SQL names are matched by Name not by relative
// position: this seems wrong to me and causes this problem; but
// user can fix by using "as" keyword to name columns in Select
// e.g. Select col as "col1", col as "col2" from tableA
OwnerReport.rl.LogError(8, String.Format("Column '{0}' is not uniquely defined within the SQL Select columns.", qc.colName));
}
}
}
catch (Exception e)
{
OwnerReport.rl.LogError(4, "SQL Exception during report compilation: " + e.Message + "\r\nSQL: " + sql);
}
finally
{
if (cmSQL != null)
{
cmSQL.Dispose();
if (dr != null)
dr.Close();
}
}
return;
}