private void ProcessNode(ExpressionType nodeType, ConstantExpression cNode, MemberExpression mNode)
{
var memberName = mNode.Member.GetMappingName();
this._conditions.Push($"{memberName} {MontageSqlHelper.GetSqlOperate(nodeType)} {MontageSqlHelper.SqlPrifix}{memberName}");
var value = cNode.Value.ToString();
this._parameters.Add(new MySqlParameter($"{MontageSqlHelper.SqlPrifix}{memberName}", value));
}
protected override Expression VisitBinary(BinaryExpression node)
{
if (node.Left.NodeType == ExpressionType.MemberAccess && node.Right.NodeType == ExpressionType.Constant)
{
this.ProcessNode(node.NodeType, (ConstantExpression)node.Right, (MemberExpression)node.Left);
return(node);
}
if (node.Left.NodeType == ExpressionType.Constant && node.Right.NodeType == ExpressionType.MemberAccess)
{
this.ProcessNode(node.NodeType, (ConstantExpression)node.Left, (MemberExpression)node.Right);
return(node);
}
this.Visit(node.Left);
this._conditions.Push(MontageSqlHelper.GetSqlOperate(node.NodeType));
this.Visit(node.Right);
return(node);
}