private IProjectionMetadata GetMetadataForModel(PageDescriptor descriptor, ProcArgs args, IDomainOptions options)
{
Type pageType = this.GetModelTypeFromPage(descriptor.PageType);
Type argsType = args.ModelType ?? typeof(object);
ISchema pageSchema = options.Schemas.GetSchema(pageType);
ISchema argsSchema = options.Schemas.GetSchema(argsType);
IProjectionMetadata pageMetadata = pageSchema.Require <IProjectionMetadata>();
IProjectionMetadata argsMetadata = argsSchema.Require <IProjectionMetadata>();
if (argsMetadata.Item != null && pageMetadata.Type.IsAssignableFrom(argsMetadata.Item.Type))
{
return(argsMetadata.Item);
}
else if (pageMetadata.Type.IsAssignableFrom(argsMetadata.Type))
{
return(argsMetadata);
}
else if (argsMetadata.Type.IsAssignableFrom(pageMetadata.Type))
{
return(pageMetadata);
}
else
{
throw new InvalidOperationException($"No conversion found between page type '{pageMetadata.Type.FullName}' and requested type '{argsMetadata.Type.FullName}'.");
}
}
private IProcResult ExecuteAndGetResult(string procName, object model, ProcArgs args)
{
IProcLocator locator = this.Context?.Locator ?? new ProcLocator();
IProcEngine engine = this.Context?.Engine ?? new ProcEngine(null);
PageDescriptor descriptor = locator.FindPage(procName, this.GetType());
ProcFactory factory = engine.Proc(descriptor, args);
return(factory(model));
}
public ProcCacheKey(PageDescriptor descriptor, ProcArgs args)
{
if (descriptor == null)
{
throw new ArgumentNullException(nameof(descriptor));
}
if (args == null)
{
throw new ArgumentNullException(nameof(args));
}
this.PageType = descriptor.PageType;
this.ModelType = args.ModelType;
this.ResultType = args.ResultType;
}
private IProjectionMetadata GetMetadataForResult(PageDescriptor descriptor, ProcArgs args, IDomainOptions options)
{
Type itemType = this.GetResultTypeFromPage(descriptor.PageType);
Type pageType = typeof(IList <>).MakeGenericType(itemType);
Type argsType = args.ResultType ?? typeof(IReadOnlyList <object>);
ISchema pageSchema = options.Schemas.GetSchema(pageType);
ISchema argsSchema = options.Schemas.GetSchema(argsType);
IProjectionMetadata pageMetadata = pageSchema.Require <IProjectionMetadata>();
IProjectionMetadata argsMetadata = argsSchema.Require <IProjectionMetadata>();
if (pageMetadata.Item != null && argsMetadata.Item != null && pageMetadata.Item.Type.IsAssignableFrom(argsMetadata.Item.Type))
{
return(argsMetadata.Item);
}
else if (pageMetadata.Item != null && argsMetadata.Item != null && argsMetadata.Item.Type.IsAssignableFrom(pageMetadata.Item.Type))
{
return(pageMetadata.Item);
}
else if (pageMetadata.Item != null && pageMetadata.Item.Type.IsAssignableFrom(argsMetadata.Type))
{
return(argsMetadata);
}
else if (argsMetadata.Item != null && argsMetadata.Item.Type.IsAssignableFrom(pageMetadata.Type))
{
return(pageMetadata);
}
else if (argsMetadata.Type.IsAssignableFrom(pageMetadata.Type))
{
return(pageMetadata);
}
else if (pageMetadata.Type.IsAssignableFrom(argsMetadata.Type))
{
return(argsMetadata);
}
else
{
throw new InvalidOperationException($"No conversion found between page type '{pageMetadata.Type.GetSanitizedFullName()}' and requested type '{argsMetadata.Type.GetSanitizedFullName()}'.");
}
}
public ProcFactory Proc(PageDescriptor descriptor, ProcArgs args)
{
if (descriptor == null)
{
throw new ArgumentNullException(nameof(descriptor));
}
if (args == null)
{
throw new ArgumentNullException(nameof(args));
}
if (descriptor.DomainType == null)
{
throw ProcExecutionException.DomainNotFound(descriptor.PageType);
}
ProcCacheKey key = new ProcCacheKey(descriptor, args);
return(ProcCache.Procs.GetOrAdd(key, _ => this.CreateProcFactory(descriptor, args)));
}
public ProcFactory Proc(PageDescriptor descriptor, ProcArgs args)
{
if (descriptor == null)
{
throw new ArgumentNullException(nameof(descriptor));
}
if (args == null)
{
throw new ArgumentNullException(nameof(args));
}
if (descriptor.DomainType == null)
{
throw new ProcExecutionException($"No domain found for page type '{descriptor.PageType.GetSanitizedFullName()}'. Make sure to implement IDomain in a parent namespace.");
}
ProcCacheKey key = new ProcCacheKey(descriptor, args);
return(ProcCache.Procs.GetOrAdd(key, _ => this.CreateProcFactory(descriptor, args)));
}
private ProcFactory CreateProcFactory(PageDescriptor descriptor, ProcArgs args)
{
IDomainOptions options = this.Options(descriptor.DomainType);
PageDescriptor[] template = this.GetTemplateHierarchy(descriptor).Reverse().ToArray();
PageConstructor[] factories = template.Select(t => this.CreatePageConstructor(t.PageType)).Concat(new PageConstructor[1]).ToArray();
IProjectionMetadata resultMetadata = this.GetMetadataForResult(descriptor, args, options);
IProjectionMetadata modelMetadata = this.GetMetadataForModel(descriptor, args, options);
ISchema resultSchema = resultMetadata.Identity.Schema;
ISchema modelSchema = modelMetadata.Identity.Schema;
IProcLocator locator = descriptor.Locator;
Type originType = descriptor.OriginType;
IProcResult procFactory(object model)
{
ProcContext context = this.CreateContext(descriptor);
ProjectionIdentity modelIdentity = new ProjectionIdentity(new Model(modelSchema, model));
ProjectionIdentity resultIdentity = new ProjectionIdentity(resultSchema);
IProjection modelProjection = new Projection(modelIdentity, context, modelMetadata);
IProjection resultProjection = new Projection(resultIdentity, context, resultMetadata);
PageExecutionContext[] execution = template.Select(t => new PageExecutionContext()
{
Page = t
}).ToArray();
execution[0].Buffer = new ProcBuffer();
for (int i = 0; i < execution.Length; i++)
{
PageConstructor nextFactory = factories[i + 1];
if (nextFactory != null)
{
PageExecutionContext nextContext = execution[i + 1];
execution[i].Body = () =>
{
ISqlPage bodyPage = nextFactory(modelProjection, resultProjection);
context.Stack.Push(nextContext);
bodyPage.Execute();
context.Stack.Pop();
};
}
}
ISqlPage page = factories[0](modelProjection, resultProjection);
context.Stack.Push(execution[0]);
page.Execute();
return(new ProcResult()
{
Buffer = context.Execution.Buffer,
Domain = options,
});
}
return(procFactory);
}
