REST.Backend.EMSServices.TEMSQueryAPI.Query

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Delphi

procedure Query(const AClass: TBackendMetaClass;  const AQuery: array of string; const AJSONArray: TJSONArray); overload;
procedure Query(const AClass: TBackendMetaClass;  const AQuery: array of string; const AJSONArray: TJSONArray; out AObjects: TArray<TBackendEntityValue>); overload;

C++

void __fastcall Query(const Rest::Backend::Metatypes::TBackendClassValue AClass, const System::UnicodeString *AQuery, const int AQuery_High, System::Json::TJSONArray* const AJSONArray)/* overload */;
void __fastcall Query(const Rest::Backend::Metatypes::TBackendClassValue AClass, const System::UnicodeString *AQuery, const int AQuery_High, System::Json::TJSONArray* const AJSONArray, /* out */ System::DynamicArray<Rest::Backend::Metatypes::TBackendEntityValue> &AObjects)/* overload */;

Properties

Type	Visibility	Source	Unit	Parent
procedure function	protected	REST.Backend.EMSServices.pas REST.Backend.EMSServices.hpp	REST.Backend.EMSServices	TEMSQueryAPI

Description

Queries the EMS server for a list of objects of the specified type.

Query receives the following parameters:

• AClass determines the class of the objects to query.
• AQuery is an array of strings where each string must contain a key-value pair separated by an equal sign, such as "my_parameter=my_value". Query adds those key-value pairs to the request as parameters.
• Query fills AJSONArray with the results from the EMS server.

If you are querying users, groups or installations, you may optionally provide an array of instances of TBackendEntityValue (AObjects), so that Query fills the array with the objects that the EMS server returns.

Note: Query only supports the AObjects for users, groups and installations. You cannot use AObjects to query modules or module resources.

Exceptions

Exception	Message	Description
EEMSClientAPIError	JSON object expected	You passed Query an array of instances of TBackendEntityValue (AObjects), but Query cannot fill that array because the structure of the JSON data received from the EMS server is unexpected. The expected structure of the received JSON data is a JSON array of JSON objects. The actual structure of the received JSON data is a JSON array that contains one or more items that are not JSON objects.
	MasterSecret required	The type of authentication is TAuthentication.MasterSecret and the MasterSecret property of the connection information of the underlying EMS backend service is an empty string.
	Session token required	The type of authentication is TAuthentication.Session you did not log in.
	Unsupported Backend query type: <AClass.BackendDataType>	Query does not support the backend data type of the specified class of the objects to query.

See Also

• REST.Backend.EMSApi.TEMSClientAPI.QueryUsers
• REST.Backend.EMSApi.TEMSClientAPI.QueryGroups
• REST.Backend.EMSApi.TEMSClientAPI.QueryModules
• REST.Backend.EMSApi.TEMSClientAPI.QueryModuleResources
• REST.Backend.EMSApi.TEMSClientAPI.QueryInstallations