protected override Expression VisitBinary(BinaryExpression b)
{
var left = Visit(b.Left);
var right = Visit(b.Right);
if (left is NamedValueExpression nv0 && right is ColumnExpression c0)
{
left = QueryUtility.GetNamedValueExpression(nv0.Name, nv0.Value, (DbType)c0.MapInfo.DataType);
}
protected override ColumnAssignment VisitColumnAssignment(ColumnAssignment ca)
{
ca = base.VisitColumnAssignment(ca);
Expression expression = ca.Expression;
if (expression is NamedValueExpression nv)
{
expression = QueryUtility.GetNamedValueExpression(nv.Name, nv.Value, (DbType)ca.Column.MapInfo.DataType);
}
return(this.UpdateColumnAssignment(ca, ca.Column, expression));
}
protected override Expression VisitBinary(BinaryExpression b)
{
Expression left = this.Visit(b.Left);
Expression right = this.Visit(b.Right);
if (left.NodeType == (ExpressionType)DbExpressionType.NamedValue &&
right.NodeType == (ExpressionType)DbExpressionType.Column)
{
NamedValueExpression nv = (NamedValueExpression)left;
ColumnExpression c = (ColumnExpression)right;
left = QueryUtility.GetNamedValueExpression(nv.Name, nv.Value, (DbType)c.MapInfo.DataType);
}
else if (b.Right.NodeType == (ExpressionType)DbExpressionType.NamedValue &&
b.Left.NodeType == (ExpressionType)DbExpressionType.Column)
{
NamedValueExpression nv = (NamedValueExpression)right;
ColumnExpression c = (ColumnExpression)left;
right = QueryUtility.GetNamedValueExpression(nv.Name, nv.Value, (DbType)c.MapInfo.DataType);
}
return(b.Update(left, b.Conversion, right));
}