public bool IsExist(IXmlStorable obj)
{
var xml = XElement.Load(obj.FilePath);
var duplicate = xml.Descendants("Id").Where(elt => (string)elt == obj.Id);
return(duplicate != null && duplicate.Count() > 0);
}
public void Add(IXmlStorable obj)
{
if (IsExist(obj))
{
var result = MessageBox.Show(
"Объект уже существует в базе данных. Хотите заменить его?",
"Предупреждение",
MessageBoxButton.YesNo
);
if (result == MessageBoxResult.No)
{
return;
}
else
{
Delete(obj);
}
}
var xml = XElement.Load(obj.FilePath);
obj.Id = Guid.NewGuid().ToString();
var xmlObject = obj.MapToXml();
xml.Add(xmlObject);
xml.Save(obj.FilePath);
}
public void Replace(IXmlStorable oldObj, IXmlStorable newObj)
{
if (!IsExist(oldObj))
{
throw new DatabaseNotFoundException($"Объект ({oldObj.GetType ().Name} Id: {oldObj.Id}) не найден в базе данных");
}
var xml = XElement.Load(oldObj.FilePath);
var oldXmlObject = Find(oldObj, xml);
oldXmlObject.Remove();
Add(newObj);
}
public static void TrySave <T>(T inputobj, XElement element, bool saveAttributes)
{
if (Equals(inputobj, null))
{
return;
}
Type inputType = typeof(T);
if (inputType == typeof(object))
{
inputType = inputobj.GetType();
}
IList listVersion = inputobj as IList;
IDictionary dictVersion = inputobj as IDictionary;
IXmlStorable xmlstorableVerison = inputobj as IXmlStorable;
ISerializable serialiableVersion = inputobj as ISerializable;
}
public void Delete(IXmlStorable obj, bool withNotification = false)
{
if (!IsExist(obj))
{
throw new DatabaseNotFoundException($"Объект ({obj.GetType ().Name} Id: {obj.Id}) не найден в базе данных");
}
if (withNotification)
{
var result = MessageBox.Show("Вы действительно хотите удалить объект?", "Предупреждение", MessageBoxButton.YesNo);
if (result == MessageBoxResult.No)
{
return;
}
}
var xml = XElement.Load(obj.FilePath);
var xmlObject = Find(obj, xml);
xmlObject.Remove();
xml.Save(obj.FilePath);
}
public virtual void ToXml(XmlElement element)
{
element.SetAttribute("Type", this.GetType().FullName);
element.SetAttribute("Text", this.Text);
element.SetAttribute("FixupId", this.GetHashCode().ToString());
if (tnparent != null)
{
element.SetAttribute("Parent", this.tnparent.GetHashCode().ToString());
}
IXmlStorable storable = myObject as IXmlStorable;
if (myObject != null && storable == null)
{
MessageBox.Show("ToXml: Type " + myObject.GetType().FullName + " is not an IXmlStorable.", "Class Generator", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
else
{
XmlElement objectElement = element.OwnerDocument.CreateElement("Entity");
element.AppendChild(objectElement);
objectElement.SetAttribute("Type", myObject.GetType().FullName);
storable.ToXml(objectElement);
}
}
public XElement Find(IXmlStorable obj, XElement xml) =>
xml.Elements(obj.GetType().Name).Where(elt => ((string)elt.Element("Id")) == obj.Id)?.First();
public static void TrySave <T>(this IXmlStorable storable, T inputobj, XElement element, bool saveAttributes)
{
}
