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 AddNewParameter()
{
QueryExpression model = this.Model as QueryExpression;
if (model.Parameters == null)
{
model.Parameters = new List <ParameterExpression>();
}
ParameterExpression parameter = new ParameterExpression(model);
model.Parameters.Add(parameter);
parameter.Name = "Parameter" + model.Parameters.Count.ToString();
ParameterExpressionViewModel childVM = new ParameterExpressionViewModel(this, parameter);
this.QueryParameters.Add(childVM);
}
public ParameterExpressionView(ParameterExpressionViewModel viewModel) : this()
{
this.DataContext = viewModel;
}