TXDataBaseRequestHandler Class

Processes a single XData HTTP request, holding its context and the settings that apply to it.

Remarks

The server module creates one instance for every request it receives, and destroys it when the request is finished. It is the object received in the TXDataModuleArgs.Handler property of the server-side event arguments, where it gives access to the HTTP request and response being processed. The settings properties return the value defined in the module the handler belongs to, unless the client overrode it for this request using the corresponding xdata- HTTP header.

Syntax

Unit: XData.Module.Base

TXDataBaseRequestHandler = class(TObject);

Constructors

Name	Description
Create	Creates a handler to process one request received by a module.

Methods

Name	Description
AcceptContains	Checks whether a media type is listed in the Accept header of the request.
SendErrorResponse	Sends an error response to the client in the format of the current payload.
SetStatusCode	Sets the HTTP status code of the response.

Properties

Name	Description
AcceptAny	Indicates whether the client accepts any media type in the response.
Context	Gets the Sparkle context of the request, holding both the request and the response.
EntityLoopHandling	Gets how circular references between entities are handled while writing the response of this request.
ExpandLevel	Gets the expand level that applies to this request.
FlushMode	Gets how much of the object manager state this request flushes to the database.
InstanceLoopHandling	Gets how circular references between plain objects are handled while writing the response of this request.
PayloadFormat	Gets the format used to read and write the payload of this request.
PostMode	Gets how this request applies a POST to the database.
ProxyListLoadDepth	Gets the maximum depth at which many-valued lazy associations are automatically loaded while building the response.
ProxyLoadDepth	Gets the maximum depth at which single-valued lazy associations are automatically loaded while building the response.
PutMode	Gets how this request applies a PUT to the database.
Request	Gets the HTTP request being processed.
ResourceInfo	Gets the information about the resource addressed by the request URL.
Response	Gets the HTTP response that will be sent to the client.
RoutingPrecedence	Gets which endpoint wins when the request URL matches both an automatic CRUD endpoint and a service operation.
SerializeInstanceRef	Gets when an instance reference is written in the JSON response of this request.
SerializeInstance​Type	Gets when the object type is written in the JSON response of this request.
UnknownMember​Handling	Gets how this request behaves when the JSON received from the client contains a property that is not known.