DataRegion _ParentDataRegion; // when DataRegions are nested; the nested regions have the parent set
#endregion Fields
#region Constructors
internal DataRegion(ReportDefn r, ReportLink p, XmlNode xNode)
: base(r,p,xNode)
{
_KeepTogether=false;
_NoRows=null;
_DataSetName=null;
_DataSetDefn=null;
_PageBreakAtStart=false;
_PageBreakAtEnd=false;
_Filters=null;
}
IDictionary _Items; // list of report items
#endregion Fields
#region Constructors
internal DataSetsDefn(ReportDefn r, ReportLink p, XmlNode xNode)
: base(r, p)
{
if (xNode.ChildNodes.Count < 10)
_Items = new ListDictionary(); // Hashtable is overkill for small lists
else
_Items = new Hashtable(xNode.ChildNodes.Count);
// Loop thru all the child nodes
foreach(XmlNode xNodeLoop in xNode.ChildNodes)
{
if (xNodeLoop.NodeType != XmlNodeType.Element)
continue;
if (xNodeLoop.Name == "DataSet")
{
DataSetDefn ds = new DataSetDefn(r, this, xNodeLoop);
if (ds != null && ds.Name != null)
_Items.Add(ds.Name.Nm, ds);
}
}
}
Report _rpt; // the runtime report
#endregion Fields
#region Constructors
internal DataSet(Report rpt, DataSetDefn dsd)
{
_rpt = rpt;
_dsd = dsd;
}
// Handle parsing of function in final pass
internal override void FinalPass()
{
base.FinalPass();
if (this is Table)
{ // Grids don't have any data responsibilities
Table t = this as Table;
if (t.IsGrid)
return;
}
// DataRegions aren't allowed in PageHeader or PageFooter;
if (this.InPageHeaderOrFooter())
OwnerReport.rl.LogError(8, String.Format("The DataRegion '{0}' is not allowed in a PageHeader or PageFooter", this.Name == null? "unknown": Name.Nm) );
ResolveNestedDataRegions();
if (_ParentDataRegion != null) // when nested we use the dataset of the parent
{
_DataSetDefn = _ParentDataRegion.DataSetDefn;
}
else if (_DataSetName != null)
{
if (OwnerReport.DataSetsDefn != null)
_DataSetDefn = (DataSetDefn) OwnerReport.DataSetsDefn.Items[_DataSetName];
if (_DataSetDefn == null)
{
OwnerReport.rl.LogError(8, String.Format("DataSetName '{0}' not specified in DataSets list.", _DataSetName));
}
}
else
{ // No name but maybe we can default to a single Dataset
if (_DataSetDefn == null && OwnerReport.DataSetsDefn != null &&
OwnerReport.DataSetsDefn.Items.Count == 1)
{
foreach (DataSetDefn d in OwnerReport.DataSetsDefn.Items.Values)
{
_DataSetDefn = d;
break; // since there is only 1 this will obtain it
}
}
if (_DataSetDefn == null)
OwnerReport.rl.LogError(8, string.Format("{0} must specify a DataSetName.",this.Name == null? "DataRegions": this.Name.Nm));
}
if (_NoRows != null)
_NoRows.FinalPass();
if (_Filters != null)
_Filters.FinalPass();
return;
}
internal override void FinalPass()
{
_ds = OwnerReport.DataSetsDefn[this._DataSetName];
if (_ds == null)
OwnerReport.rl.LogError(8, "DataSetReference refers to unknown data set '" + _DataSetName + "'");
else
{
_vField = _ds.Fields[_ValueField];
if (_vField == null)
OwnerReport.rl.LogError(8, "ValueField refers to unknown field '" + _ValueField + "'");
else
{
if (_LabelField == null)
_lField = _vField;
else
{
_lField = _ds.Fields[_LabelField];
if (_lField == null)
OwnerReport.rl.LogError(8, "LabelField refers to unknown field '" + _LabelField + "'");
}
}
}
return;
}
