/// <summary>
/// 拼接两个 <paramref name="System.Linq.Expression"/> ，两个 <paramref name="System.Linq.Expression"/> 的参数必须完全相同。
/// </summary>
/// <typeparam name="T">表达式中的元素类型</typeparam>
/// <param name="left">左边的 <paramref name="System.Linq.Expression"/></param>
/// <param name="right">右边的 <paramref name="System.Linq.Expression"/></param>
/// <param name="func">表达式拼接的具体逻辑</param>
/// <returns>拼接完成的 <paramref name="System.Linq.Expression"/></returns>
public static LambdaExpression MakeBinary(this LambdaExpression left, LambdaExpression right, Func <Expression, Expression, Expression> func)
{
var data = Combinate(right.Parameters, left.Parameters).ToArray();
right = ParameterReplace.Replace(right, data) as LambdaExpression;
return(Expression.Lambda(func(left.Body, right.Body), left.Parameters.ToArray()));
}
private static Expression GetAccessor(Expression item, Type type)
{
Expression accessor = null;
var getString = Expression.Property(item, $"{nameof(EntityProperty.StringValue)}");
if (type == typeof(string))
{
return(getString);
}
if (KnownTypes.TryGetValue(type, out var accessorName))
{
accessor = Expression.Coalesce(Expression.Property(item, accessorName), Expression.Default(type));
}
else if (type.IsGenericType && type.GetGenericTypeDefinition() == typeof(Nullable <>))
{
var underlying = Nullable.GetUnderlyingType(type);
if (KnownTypes.TryGetValue(underlying, out accessorName))
{
accessor = Expression.Property(item, accessorName);
}
}
// Do a lookup to see if there is a type that is suitable
if (accessor == null)
{
if (Converters.TryGetValue(type, out var converter))
{
var lambda = converter as LambdaExpression;
// Create a temporary variable
// this ensures against multiple accesses to the getString in the lambda
var variable = Expression.Variable(typeof(string));
var assign = Expression.Assign(variable, getString);
// inline the lambda by replacing the string parameter with the variable
var work = ParameterReplace.Modify(lambda.Body, lambda.Parameters[0], variable);
accessor = Expression.Block(variable, assign, work);
}
}
if (accessor == null)
{
throw new ResolverException($"GetAccessor didn't recognize the type '{type.Name}' - add a conversion from string");
}
return(accessor);
}
public string DistributionPoint(int dpId, string task)
{
var smb = new Services.Client.SMB();
var dp = BLL.DistributionPoint.GetDistributionPoint(dpId);
smb.SharePath = "//" + ParameterReplace.Between(dp.Server) + "/" + dp.ShareName;
smb.Domain = dp.Domain;
if (task == "pull")
{
smb.Username = dp.RwUsername;
smb.Password = new Helpers.Encryption().DecryptText(dp.RwPassword);
}
else
{
smb.Username = dp.RoUsername;
smb.Password = new Helpers.Encryption().DecryptText(dp.RoPassword);
}
return(JsonConvert.SerializeObject(smb));
}
protected void btnUpdateSettings_OnClick(object sender, EventArgs e)
{
RequiresAuthorization(Authorizations.UpdateAdmin);
if (!ValidateSettings())
{
return;
}
var listSettings = new List <Models.Setting>
{
new Models.Setting {
Name = "Server IP", Value = txtIP.Text, Id = Setting.GetSetting("Server IP").Id
},
new Models.Setting {
Name = "Web Server Port", Value = txtPort.Text, Id = Setting.GetSetting("Web Server Port").Id
},
new Models.Setting {
Name = "Tftp Path", Value = txtTFTPPath.Text, Id = Setting.GetSetting("Tftp Path").Id
},
new Models.Setting {
Name = "Default Computer View", Value = ddlComputerView.Text, Id = Setting.GetSetting("Default Computer View").Id
},
new Models.Setting {
Name = "Web Path", Value = txtWebService.Text, Id = Setting.GetSetting("Web Path").Id
}
};
var newBootMenu = false;
var newClientIso = false;
if (Setting.UpdateSetting(listSettings))
{
EndUserMessage = "Successfully Updated Settings";
if ((string)ViewState["serverIP"] != txtIP.Text)
{
newBootMenu = true;
newClientIso = true;
}
if ((string)ViewState["serverPort"] != txtPort.Text)
{
newBootMenu = true;
newClientIso = true;
}
if ((string)ViewState["servicePath"] != ParameterReplace.Between(txtWebService.Text))
{
newBootMenu = true;
newClientIso = true;
}
}
else
{
EndUserMessage = "Could Not Update Settings";
}
if (!newBootMenu)
{
return;
}
lblTitle.Text =
"Your Settings Changes Require A New PXE Boot File Be Created. <br>Go There Now?";
if (newClientIso)
{
lblClientISO.Text = "The Client ISO Must Also Be Updated.";
}
ClientScript.RegisterStartupScript(GetType(), "modalscript",
"$(function() { var menuTop = document.getElementById('confirmbox'),body = document.body;classie.toggle(menuTop, 'confirm-box-outer-open'); });",
true);
Session.Remove("Message");
}
public static Expression Replace(Expression e, IEnumerable <KeyValuePair <ParameterExpression, ParameterExpression> > paramList)
{
var item = new ParameterReplace(paramList);
return(item.Visit(e));
}
