Improved dataset handling for functional actions.

2024-11-15 15:55:54 +01:00 · 2023-07-19 11:10:21 +02:00 · 2023-07-19 11:10:21 +02:00 · 61d021b92a
commit 61d021b92a
parent e6fc21dff9
10 changed files with 308 additions and 28 deletions
--- a/README.md
+++ b/README.md
@ -231,12 +231,89 @@ Congratulations to Daniele Teti and all the staff for the excellent work!" -- Ma

 ## What's New in the next "repo version" a.k.a. 3.4.0-neon

- Added support for dotEnv multiline keys - added dotEnv show case
- Added MSHeap memory manager for Win32 and Win64 (https://github.com/RDP1974/DelphiMSHeap)
+- ⚡ Added support for dotEnv multiline keys - added dotEnv show case
+
+- ⚡ Added MSHeap memory manager for Win32 and Win64 (https://github.com/RDP1974/DelphiMSHeap)
+
 - 🐞 FIX [Issue 664](https://github.com/danieleteti/delphimvcframework/issues/664) Thanks to [MPannier](https://github.com/MPannier)
+
 - 🐞 FIX [Issue 667](https://github.com/danieleteti/delphimvcframework/issues/667)
+
 - 🐞 FIX Wrong comparison in checks for ro/RW/PK fields in `TMVCActiveRecord`
- Wizard updated to be dotEnv aware
+
+- ⚡ Wizard updated to be dotEnv aware
+
+- ⚡ Better error message in case of serialization of `TArray<TObject>`
+
+- ⚡ Improved serialization of `TObjectList<TDataSet>` (however `ObjectDict` is still the preferred way to serialize multiple datasets).
+
+- ⚡ Added static method for easier cloning of FireDAC dataset into `TFDMemTable`. 
+
+  - `class function CloneFrom(const FDDataSet: TFDDataSet): TFDMemTable`
+
+  - Check sample "function_actions_showcase.dproj" for more info.
+
+- ⚡ Functional Actions
+
+  - In addition to the classic `procedure` based actions, now it's possibile to use functions as actions. The `Result` variable is automatically rendered and, if it is an object, its memory is freed.
+
+    ```pascal
+    type
+      [MVCNameCase(ncCamelCase)]
+      TPersonRec = record
+        FirstName, LastName: String;
+        Age: Integer;
+        class function Create: TPersonRec; static;
+      end;
+    
+      [MVCNameCase(ncCamelCase)]
+      TPerson = class
+      private
+        fAge: Integer;
+        fFirstName, fLastName: String;
+      public
+        property FirstName: String read fFirstName write fFirstName;
+        property LastName: String read fLastName write fLastName;
+        property Age: Integer read fAge write fAge;
+      end;
+    
+      [MVCPath('/api')]
+      TMyController = class(TMVCController)
+      public
+        { actions returning a simple type }
+        [MVCPath('/sumsasinteger/($A)/($B)')]
+        function GetSum(const A, B: Integer): Integer;
+        [MVCPath('/sumsasfloat/($A)/($B)')]
+        function GetSumAsFloat(const A, B: Extended): Extended;
+    
+        { actions returning records }
+        [MVCPath('/records/single')]
+        function GetSingleRecord: TPersonRec;
+        [MVCPath('/records/multiple')]
+        function GetMultipleRecords: TArray<TPersonRec>;
+    
+        { actions returning objects }
+        [MVCPath('/objects/single')]
+        function GetSingleObject: TPerson;
+        [MVCPath('/objects/multiple')]
+        function GetMultipleObjects: TObjectList<TPerson>;
+    
+        { actions returning datasets }
+        [MVCPath('/datasets/single')]
+        function GetSingleDataSet: TDataSet;
+        [MVCPath('/datasets/multiple')]
+        function GetMultipleDataSet: TEnumerable<TDataSet>;
+        [MVCPath('/datasets/multiple2')]
+        function GetMultipleDataSet2: IMVCObjectDictionary;
+    
+        { customize response headers }
+        [MVCPath('/headers')]
+        function GetWithCustomHeaders: TObjectList<TPerson>;
+      end;
+    ```
+
+    Check sample "function_actions_showcase.dproj" for more info.
+



--- a/samples/data/people_dataset.json
+++ b/samples/data/people_dataset.json
@ -0,0 +1 @@
+{"FDBS":{"Version":16,"Manager":{"UpdatesRegistry":true,"TableList":[{"class":"Table","Name":"FDMemTable1","SourceName":"FDMemTable1","TabID":0,"EnforceConstraints":false,"MinimumCapacity":50,"CheckNotNull":false,"ColumnList":[{"class":"Column","Name":"id","SourceName":"id","SourceID":1,"DataType":"Int64","Searchable":true,"AllowNull":true,"Base":true,"OAllowNull":true,"OInUpdate":true,"OInWhere":true,"OInKey":true,"OriginColName":"id"},{"class":"Column","Name":"last_name","SourceName":"last_name","SourceID":2,"DataType":"WideString","Size":100,"Searchable":true,"AllowNull":true,"Base":true,"OAllowNull":true,"OInUpdate":true,"OInWhere":true,"OriginColName":"last_name","SourceSize":100},{"class":"Column","Name":"first_name","SourceName":"first_name","SourceID":3,"DataType":"WideString","Size":100,"Searchable":true,"AllowNull":true,"Base":true,"OAllowNull":true,"OInUpdate":true,"OInWhere":true,"OriginColName":"first_name","SourceSize":100},{"class":"Column","Name":"dob","SourceName":"dob","SourceID":4,"DataType":"Date","Searchable":true,"AllowNull":true,"Base":true,"OAllowNull":true,"OInUpdate":true,"OInWhere":true,"OriginColName":"dob"},{"class":"Column","Name":"full_name","SourceName":"full_name","SourceID":5,"DataType":"WideString","Size":80,"Searchable":true,"AllowNull":true,"Base":true,"OAllowNull":true,"OInUpdate":true,"OInWhere":true,"OriginColName":"full_name","SourceSize":80},{"class":"Column","Name":"is_male","SourceName":"is_male","SourceID":6,"DataType":"Boolean","Searchable":true,"AllowNull":true,"Base":true,"OAllowNull":true,"OInUpdate":true,"OInWhere":true,"OriginColName":"is_male"},{"class":"Column","Name":"note","SourceName":"note","SourceID":7,"DataType":"WideMemo","Searchable":true,"AllowNull":true,"BlobData":true,"Base":true,"OAllowNull":true,"OInUpdate":true,"OInWhere":true,"OriginColName":"note"},{"class":"Column","Name":"photo","SourceName":"photo","SourceID":8,"DataType":"Blob","Searchable":true,"AllowNull":true,"BlobData":true,"Base":true,"OAllowNull":true,"OInUpdate":true,"OInWhere":true,"OriginColName":"photo"},{"class":"Column","Name":"person_type","SourceName":"person_type","SourceID":9,"DataType":"WideString","Size":8190,"Searchable":true,"AllowNull":true,"BlobData":true,"Base":true,"OAllowNull":true,"OInUpdate":true,"OInWhere":true,"OriginColName":"person_type","SourceSize":8190},{"class":"Column","Name":"salary","SourceName":"salary","SourceID":10,"DataType":"Currency","Precision":19,"Scale":4,"Searchable":true,"AllowNull":true,"Base":true,"OAllowNull":true,"OInUpdate":true,"OInWhere":true,"OriginColName":"salary","SourcePrecision":19,"SourceScale":4},{"class":"Column","Name":"annual_bonus","SourceName":"annual_bonus","SourceID":11,"DataType":"Currency","Precision":19,"Scale":4,"Searchable":true,"AllowNull":true,"Base":true,"OAllowNull":true,"OInUpdate":true,"OInWhere":true,"OriginColName":"annual_bonus","SourcePrecision":19,"SourceScale":4}],"ConstraintList":[],"ViewList":[],"RowList":[{"RowID":0,"Original":{"id":235,"last_name":"Richards","first_name":"Reed","dob":"19851104","full_name":"Reed Richards","is_male":true,"person_type":"person","photo":""}},{"RowID":1,"Original":{"id":236,"last_name":"Parker","first_name":"Peter","dob":"19851104","full_name":"Peter Parker","is_male":true,"person_type":"employee","salary":2100,"photo":""}},{"RowID":2,"Original":{"id":237,"last_name":"Storm","first_name":"Sue","dob":"19751014","full_name":"Sue Storm","is_male":false,"person_type":"employee","salary":2200,"photo":""}},{"RowID":3,"Original":{"id":238,"last_name":"Banner","first_name":"Bruce","dob":"19751104","full_name":"Bruce Banner","is_male":true,"person_type":"manager","salary":2800,"annual_bonus":5000,"photo":""}}]}],"RelationList":[],"UpdatesJournal":{"SavePoint":4,"Changes":[]}}}}
--- a/samples/funcion_actions_showcase/ControllerU.pas
+++ b/samples/funcion_actions_showcase/ControllerU.pas
@ -4,7 +4,7 @@ interface

 uses
  MVCFramework, MVCFramework.Commons, MVCFramework.Serializer.Commons,
-  System.Generics.Collections;
+  System.Generics.Collections, Data.DB;

 type
  [MVCNameCase(ncCamelCase)]
@ -46,6 +46,14 @@ type
    [MVCPath('/objects/multiple')]
    function GetMultipleObjects: TObjectList<TPerson>;

+    { actions returning datasets }
+    [MVCPath('/datasets/single')]
+    function GetSingleDataSet: TDataSet;
+    [MVCPath('/datasets/multiple')]
+    function GetMultipleDataSet: TEnumerable<TDataSet>;
+    [MVCPath('/datasets/multiple2')]
+    function GetMultipleDataSet2: IMVCObjectDictionary;
+
    { customize response headers }
    [MVCPath('/headers')]
    function GetWithCustomHeaders: TObjectList<TPerson>;
@ -54,10 +62,38 @@ type
 implementation

 uses
-  System.SysUtils, MVCFramework.Logger, System.StrUtils, System.DateUtils;
+  System.SysUtils, MVCFramework.Logger, System.StrUtils, System.DateUtils,
+  MainDMU, FireDAC.Comp.Client, MVCFramework.FireDAC.Utils;

 { TMyController }

+function TMyController.GetMultipleDataSet: TEnumerable<TDataSet>;
+begin
+  var lDM := TdmMain.Create(nil);
+  try
+    lDM.dsPeople.Open;
+    var lList := TObjectList<TDataSet>.Create;
+    lList.Add(TFDMemTable.CloneFrom(lDM.dsPeople));
+    lList.Add(TFDMemTable.CloneFrom(lDM.dsPeople));
+    Result := lList;
+  finally
+    lDM.Free;
+  end;
+end;
+
+function TMyController.GetMultipleDataSet2: IMVCObjectDictionary;
+begin
+  var lDM := TdmMain.Create(nil);
+  try
+    lDM.dsPeople.Open;
+    Result := ObjectDict()
+      .Add('people1', TFDMemTable.CloneFrom(lDM.dsPeople))
+      .Add('people2', TFDMemTable.CloneFrom(lDM.dsPeople));
+  finally
+    lDM.Free;
+  end;
+end;
+
 function TMyController.GetMultipleObjects: TObjectList<TPerson>;
 begin
  Result := TObjectList<TPerson>.Create;
@ -90,6 +126,17 @@ begin
  Inc(Result[2].Age, 20);
 end;

+function TMyController.GetSingleDataSet: TDataSet;
+begin
+  var lDM := TdmMain.Create(nil);
+  try
+    lDM.dsPeople.Open;
+    Result := TFDMemTable.CloneFrom(lDM.dsPeople);
+  finally
+    lDM.Free;
+  end;
+end;
+
 function TMyController.GetSingleObject: TPerson;
 begin
  Result := TPerson.Create;
--- a/samples/funcion_actions_showcase/MainDMU.dfm
+++ b/samples/funcion_actions_showcase/MainDMU.dfm
@ -0,0 +1,101 @@
+object dmMain: TdmMain
+  Height = 162
+  Width = 312
+  object dsPeople: TFDMemTable
+    Active = True
+    FetchOptions.AssignedValues = [evMode]
+    FetchOptions.Mode = fmAll
+    ResourceOptions.AssignedValues = [rvPersistent, rvSilentMode]
+    ResourceOptions.Persistent = True
+    ResourceOptions.SilentMode = True
+    UpdateOptions.AssignedValues = [uvCheckRequired, uvAutoCommitUpdates]
+    UpdateOptions.CheckRequired = False
+    UpdateOptions.AutoCommitUpdates = True
+    Left = 176
+    Top = 88
+    Content = {
+      4144425310000000CA060000FF00010001FF02FF03040016000000460044004D
+      0065006D005400610062006C0065003100050016000000460044004D0065006D
+      005400610062006C0065003100060000000000070000080032000000090000FF
+      0AFF0B04000400000069006400050004000000690064000C00010000000E000D
+      000F000110000111000112000113000114000115000116000400000069006400
+      FEFF0B0400120000006C006100730074005F006E0061006D0065000500120000
+      006C006100730074005F006E0061006D0065000C00020000000E001700180064
+      0000000F00011000011100011200011300011400011600120000006C00610073
+      0074005F006E0061006D006500190064000000FEFF0B04001400000066006900
+      7200730074005F006E0061006D00650005001400000066006900720073007400
+      5F006E0061006D0065000C00030000000E0017001800640000000F0001100001
+      110001120001130001140001160014000000660069007200730074005F006E00
+      61006D006500190064000000FEFF0B04000600000064006F0062000500060000
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+      65000C00050000000E0017001800500000000F00011000011100011200011300
+      01140001160012000000660075006C006C005F006E0061006D00650019005000
+      0000FEFF0B04000E000000690073005F006D0061006C00650005000E00000069
+      0073005F006D0061006C0065000C00060000000E001B000F0001100001110001
+      12000113000114000116000E000000690073005F006D0061006C006500FEFF0B
+      0400080000006E006F00740065000500080000006E006F00740065000C000700
+      00000E001C000F00011000011D00011100011200011300011400011600080000
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+      0074006F0072006D000500000008001000000065006D0070006C006F00790065
+      006500090080B14F0100000000FEFEFF27280003000000FF290000EE00000000
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+      740049006E007400360034001000440061007400610054007900700065001400
+      530065006100720063006800610062006C006500120041006C006C006F007700
+      4E0075006C006C000800420061007300650014004F0041006C006C006F007700
+      4E0075006C006C0012004F0049006E0055007000640061007400650010004F00
+      49006E00570068006500720065000C004F0049006E004B00650079001A004F00
+      72006900670069006E0043006F006C004E0061006D0065001800640074005700
+      69006400650053007400720069006E0067000800530069007A00650014005300
+      6F007500720063006500530069007A0065000C00640074004400610074006500
+      12006400740042006F006F006C00650061006E00140064007400570069006400
+      65004D0065006D006F00100042006C006F00620044006100740061000C006400
+      740042006C006F006200140064007400430075007200720065006E0063007900
+      120050007200650063006900730069006F006E000A005300630061006C006500
+      1E0053006F00750072006300650050007200650063006900730069006F006E00
+      160053006F0075007200630065005300630061006C0065001C0043006F006E00
+      730074007200610069006E0074004C0069007300740010005600690065007700
+      4C006900730074000E0052006F0077004C00690073007400060052006F007700
+      0A0052006F0077004900440010004F0072006900670069006E0061006C001800
+      520065006C006100740069006F006E004C006900730074001C00550070006400
+      61007400650073004A006F00750072006E0061006C0012005300610076006500
+      50006F0069006E0074000E004300680061006E00670065007300}
+  end
+end
--- a/samples/funcion_actions_showcase/MainDMU.pas
+++ b/samples/funcion_actions_showcase/MainDMU.pas
@ -0,0 +1,26 @@
+unit MainDMU;
+
+interface
+
+uses
+  System.SysUtils, System.Classes, FireDAC.Stan.Intf, FireDAC.Stan.Option,
+  FireDAC.Stan.Param, FireDAC.Stan.Error, FireDAC.DatS, FireDAC.Phys.Intf,
+  FireDAC.DApt.Intf, FireDAC.Stan.StorageBin, Data.DB, FireDAC.Comp.DataSet,
+  FireDAC.Comp.Client;
+
+type
+  TdmMain = class(TDataModule)
+    dsPeople: TFDMemTable;
+  private
+    { Private declarations }
+  public
+    { Public declarations }
+  end;
+
+implementation
+
+{%CLASSGROUP 'System.Classes.TPersistent'}
+
+{$R *.dfm}
+
+end.
--- a/samples/funcion_actions_showcase/function_actions_showcase.dpr
+++ b/samples/funcion_actions_showcase/function_actions_showcase.dpr
@ -15,7 +15,8 @@ uses
  IdContext,
  IdHTTPWebBrokerBridge,
  ControllerU in 'ControllerU.pas',
-  WebModuleU in 'WebModuleU.pas' {MyWebModule: TWebModule};
+  WebModuleU in 'WebModuleU.pas' {MyWebModule: TWebModule},
+  MainDMU in 'MainDMU.pas' {dmMain: TDataModule};

 {$R *.res}

--- a/samples/funcion_actions_showcase/function_actions_showcase.dproj
+++ b/samples/funcion_actions_showcase/function_actions_showcase.dproj
@ -120,6 +120,11 @@
            <FormType>dfm</FormType>
            <DesignClass>TWebModule</DesignClass>
        </DCCReference>
+        <DCCReference Include="MainDMU.pas">
+            <Form>dmMain</Form>
+            <FormType>dfm</FormType>
+            <DesignClass>TDataModule</DesignClass>
+        </DCCReference>
        <BuildConfiguration Include="Base">
            <Key>Base</Key>
        </BuildConfiguration>
--- a/sources/MVCFramework.FireDAC.Utils.pas
+++ b/sources/MVCFramework.FireDAC.Utils.pas
@ -29,7 +29,8 @@ unit MVCFramework.FireDAC.Utils;
 interface

 uses
-  FireDAC.Comp.Client, FireDAC.Stan.Param, System.Rtti, JsonDataObjects;
+  FireDAC.Comp.Client, FireDAC.Stan.Param, System.Rtti, JsonDataObjects,
+  Data.DB, FireDAC.Comp.DataSet;

 type
  TFireDACUtils = class sealed
@ -51,13 +52,13 @@ type
  TFDCustomMemTableHelper = class helper for TFDCustomMemTable
  public
    procedure InitFromMetadata(const AJSONMetadata: TJSONObject);
+    class function CloneFrom(const FDDataSet: TFDDataSet): TFDMemTable; static;
  end;

 implementation

 uses
  System.Generics.Collections,
-  Data.DB,
  System.Classes,
  MVCFramework.Serializer.Commons,
  System.SysUtils;
@ -222,6 +223,12 @@ begin
  end;
 end;

+class function TFDCustomMemTableHelper.CloneFrom(const FDDataSet: TFDDataSet): TFDMemTable;
+begin
+  Result := TFDMemTable.Create(nil);
+  TFDMemTable(Result).CloneCursor(FDDataSet);
+end;
+
 procedure TFDCustomMemTableHelper.InitFromMetadata(const AJSONMetadata: TJSONObject);
 begin
  TFireDACUtils.CreateDatasetFromMetadata(Self, AJSONMetadata);
--- a/sources/MVCFramework.Serializer.JsonDataObjects.pas
+++ b/sources/MVCFramework.Serializer.JsonDataObjects.pas
@ -3033,8 +3033,15 @@ begin
        for Obj in ObjList do
        begin
          if Obj <> nil then
+          begin
+            if Obj is TDataSet then
+            begin
+              DataSetToJsonArray(TDataSet(Obj), JSONArray.AddArray, TMVCNameCase.ncLowerCase, nil,nil,);
+            end
+            else
            begin
              ObjectToJsonObject(Obj, JSONArray.AddObject, GetSerializationType(Obj, AType), AIgnoredAttributes)
+            end;
          end
          else
          begin
@ -3074,6 +3081,12 @@ begin
    begin
      lJObj := lJSONArr.AddObject;
      lCurrentArrayItem := ATValueContainingAnArray.GetArrayElement(I);
+      if lCurrentArrayItem.IsObjectInstance then
+      begin
+        raise EMVCSerializationException.CreateFmt('Found a "%s" while serializing array. Instance types not allowed in arrays - [HINT] Use list of objects instead of array', [lCurrentArrayItem.AsObject.ClassName]);
+      end
+      else
+      begin
        InternalRecordToJsonObject(
          lCurrentArrayItem.GetReferenceToRawData,
          lCurrentArrayItem.TypeInfo,
@ -3085,6 +3098,7 @@ begin
          nil
          );
      end;
+    end;
    Result := lJSONArr.ToJSON();
  finally
    lJSONArr.free;
--- a/sources/MVCFramework.pas
+++ b/sources/MVCFramework.pas
@ -2515,7 +2515,11 @@ begin
                            lResponseObject := lInvokeResult.AsObject;
                            try
                              // https://learn.microsoft.com/en-us/aspnet/core/web-api/action-return-types?view=aspnetcore-7.0
-                              if lResponseObject is TStream then
+                              if lResponseObject is TDataSet then
+                              begin
+                                lSelectedController.Render(TDataSet(lResponseObject), False);
+                              end
+                              else if lResponseObject is TStream then
                              begin
                                lContext.Response.RawWebResponse.Content := EmptyStr;
                                lContext.Response.RawWebResponse.ContentType := lContext.Response.ContentType;
@ -2523,9 +2527,7 @@ begin
                                lContext.Response.RawWebResponse.FreeContentStream := True;
                                lResponseObject := nil; //do not free it!!
                              end
-                              else
-                              begin
-                                if TDuckTypedList.CanBeWrappedAsList(lResponseObject, lObjList) then
+                              else if TDuckTypedList.CanBeWrappedAsList(lResponseObject, lObjList) then
                              begin
                                lSelectedController.Render(lObjList);
                              end
@ -2533,7 +2535,6 @@ begin
                              begin
                                lSelectedController.Render(lResponseObject, False);
                              end;
-                              end;
                            finally
                              lResponseObject.Free;
                            end
				`@ -0,0 +1 @@`
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