protected override object GetDialogResult()
{
if (this.SelectedNode != null
&&
(this.SelectedNode is TableExpressionViewModel ||
this.SelectedNode is QueryExpressionViewModel))
{
return(null);
}
if (this.SelectedNode is ParameterExpressionViewModel)
{
return(((ParameterExpressionViewModel)this.SelectedNode).GetParameterReferenceViewModel(this.SelectedNode.Parent));
}
HermesViewModel parentVM = this.Caller as ComparisonOperatorViewModel;
if (parentVM == null)
{
parentVM = this.Caller as PropertyExpressionViewModel;
}
PropertyReferenceViewModel selectedVM = this.SelectedNode as PropertyReferenceViewModel;
PropertyReference source = selectedVM.Model as PropertyReference;
if (parentVM != null && selectedVM != null && source != null)
{
PropertyReference model = new PropertyReference(parentVM.Model, source.Table, source.Property);
return(new PropertyReferenceViewModel(parentVM, selectedVM.Table, model));
}
else
{
return(null);
}
}
private void InitializeViewModel(ComparisonOperator model)
{
QueryExpressionViewModel query = this.GetQueryExpressionViewModel(this);
SelectStatementViewModel select = this.GetSelectStatementViewModel(this);
if (select == null)
{
return;
}
if (model.LeftExpression is PropertyReference)
{
PropertyReference property = (PropertyReference)model.LeftExpression;
TableExpressionViewModel tableVM = select.Tables.Where(t => t.Alias == property.Table.Alias).FirstOrDefault();
PropertyReferenceViewModel propertyVM = new PropertyReferenceViewModel(this, tableVM, (PropertyReference)model.LeftExpression);
this.LeftExpression = propertyVM;
this.LeftExpressionView = new PropertyReferenceView(propertyVM);
}
else if (model.LeftExpression is ParameterExpression)
{
if (query != null)
{
ParameterExpression expression = (ParameterExpression)model.LeftExpression;
ParameterExpressionViewModel vm = query.QueryParameters.Where(p => p.Name == expression.Name).FirstOrDefault();
if (vm != null)
{
this.LeftExpression = vm.GetParameterReferenceViewModel(this);
this.LeftExpressionView = new ParameterReferenceView((ParameterReferenceViewModel)this.LeftExpression);
}
}
}
if (model.RightExpression is PropertyReference)
{
PropertyReference property = (PropertyReference)model.RightExpression;
TableExpressionViewModel tableVM = select.Tables.Where(t => t.Alias == property.Table.Alias).FirstOrDefault();
PropertyReferenceViewModel propertyVM = new PropertyReferenceViewModel(this, tableVM, (PropertyReference)model.RightExpression);
this.RightExpression = propertyVM;
this.RightExpressionView = new PropertyReferenceView(propertyVM);
}
else if (model.RightExpression is ParameterExpression)
{
if (query != null)
{
ParameterExpression expression = (ParameterExpression)model.RightExpression;
ParameterExpressionViewModel vm = query.QueryParameters.Where(p => p.Name == expression.Name).FirstOrDefault();
if (vm != null)
{
this.RightExpression = vm.GetParameterReferenceViewModel(this);
this.RightExpressionView = new ParameterReferenceView((ParameterReferenceViewModel)this.RightExpression);
}
}
}
}
private void IntializeViewModel(PropertyExpression model)
{
if (model.Expression == null)
{
return;
}
if (model.Expression is PropertyReference)
{
SelectStatementViewModel parent = this.Parent as SelectStatementViewModel;
if (parent != null)
{
PropertyReference property = (PropertyReference)model.Expression;
TableExpressionViewModel tableVM = parent.Tables.Where(t => t.Alias == property.Table.Alias).FirstOrDefault();
PropertyReferenceViewModel propertyVM = new PropertyReferenceViewModel(this, tableVM, (PropertyReference)model.Expression);
this.OnExpressionSelected(propertyVM);
}
}
}
public PropertyReferenceView(PropertyReferenceViewModel viewModel) : this()
{
this.DataContext = viewModel;
}