Databases
StackOverflow2013
Postsdbo
PO
 

Note that there are some explanatory texts on larger screens.

plurals
  1. PO
    primarykey
    data
    text
    <p>As with all attributes, the included type information on attributes apply to all closed types from the generic type definition. Thus, what you have actually defined (to protobuf-net) is:</p> <pre><code>BaseClass : GenericBaseClass&lt;object&gt; : GenericDerivedClass&lt;object&gt; : DerivedClass1 : DerivedClass2 : GenericDerivedClass&lt;string&gt; : DerivedClass1 : DerivedClass2 : GenericBaseClass&lt;string&gt; : GenericDerivedClass&lt;object&gt; : DerivedClass1 : DerivedClass2 : GenericDerivedClass&lt;string&gt; : DerivedClass1 : DerivedClass2 </code></pre> <p>As you can see, there are lots of duplicates - which is clearly confusing. Since attribute arguments can't use type parameters, this would leave the option of adding some kind of odd predicate mechanism, which is IMO pretty confusing. IMO, it would be a better idea to model this manually (removing the <code>ProtoInclude</code> attributes). I <em>suspect</em> your intended model is:</p> <pre><code>BaseClass : GenericBaseClass&lt;object&gt; : GenericDerivedClass&lt;object&gt; : DerivedClass2 : GenericBaseClass&lt;string&gt; : GenericDerivedClass&lt;string&gt; : DerivedClass1 </code></pre> <p>protobuf-net can work with that, but to <em>explain</em> the model requires "v2" and the <code>RuntimeTypeModel</code>:</p> <p>Note also that <code>object</code> is a bit of a problem for protobuf; protobuf-net can fake around it with the dynamic-type option, but that is... not ideal. It certainly can't serialize an <code>object</code>, so for the test I've substituted a string. Note also that <code>BaseProperty1</code>, <code>BaseProperty2</code> and <code>AdditionalProperty</code> are not currently marked for serialization, but can be trivially.</p> <p>Anyway:</p> <pre><code>RuntimeTypeModel.Default[typeof(BaseClass)] .AddSubType(10, typeof(GenericBaseClass&lt;object&gt;)) .AddSubType(11, typeof(GenericBaseClass&lt;string&gt;)); RuntimeTypeModel.Default[typeof(GenericBaseClass&lt;object&gt;)] .AddSubType(10, typeof(GenericDerivedClass&lt;object&gt;)); RuntimeTypeModel.Default[typeof(GenericBaseClass&lt;object&gt;)][5].DynamicType = true; // object! RuntimeTypeModel.Default[typeof(GenericDerivedClass&lt;object&gt;)] .AddSubType(10, typeof(DerivedClass2)); RuntimeTypeModel.Default[typeof(GenericBaseClass&lt;string&gt;)] .AddSubType(10, typeof(GenericDerivedClass&lt;string&gt;)); RuntimeTypeModel.Default[typeof(GenericDerivedClass&lt;string&gt;)] .AddSubType(10, typeof(DerivedClass1)); DerivedClass2 i = new DerivedClass2() { BaseProperty1 = 1, BaseProperty2 = 2, DerivedClass2Property = 3, ResponseProperty = "some string" }; using (var file = System.IO.File.Create("test.bin")) { ProtoBuf.Serializer.Serialize(file, i); } using (var file = System.IO.File.OpenRead("test.bin")) { var o = ProtoBuf.Serializer.Deserialize&lt;DerivedClass2&gt;(file); } </code></pre> <p>You don't <em>have</em> to use <code>RuntimeTypeModel.Default</code> - in fact, I recommend using (and caching) a separate type-model; but <code>Serializer.Serialize</code> points at the default model. If you create a custom model (<code>TypeModel.Create</code>) just store it somewhere and use the <code>Serialize</code> etc from there.</p>
    singulars
    1. This table or related slice is empty.
    1. POProtobuf-net generic inheritance and closed constructed generic type
      singulars
      1. PTQuestion
    1. PTAnswer
    1. USMarc Gravell
    1. USMarc Gravell
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. POProtobuf-net generic inheritance and closed constructed generic type
      singulars
      1. PTQuestion
    1. This table or related slice is empty.
    1. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTAcceptedByOriginator
    2. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    3. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    1. COThanks a lot for your quick reply!! Given that the example was just a branch of more complex class hierarchy, manually creating the typeModel can get really complicated. And also my bad, I just used object as type parameter as an example. We instead have other object filling the T param. I will give it a shot and see if I could automate using reflection. But otherwise I think there must be some way we could represent such hierarchies using attributes.
      singulars
      1. PO
      1. USshomat
    2. COI bumped into this exception after copying an incorrect KnownType attribute that was for a child of a child class. Would be useful if the exception text contained the duplicate class if possible.
      singulars
      1. PO
      1. USShaun
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload