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delphiDll / Creatio API / $filter parameter with startswith function

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var
http: HCkHttp;
success: Boolean;
queryParams: HCkJsonObject;
resp: HCkHttpResponse;
sbResponseBody: HCkStringBuilder;
jResp: HCkJsonObject;
respStatusCode: Integer;
Id: PWideChar;
CreatedOn: PWideChar;
CreatedById: PWideChar;
ModifiedOn: PWideChar;
ModifiedById: PWideChar;
ProcessListeners: Integer;
ContactId: PWideChar;
Name: PWideChar;
OrgStructureUnitId: PWideChar;
Notes: PWideChar;
JobId: PWideChar;
FullJobTitle: PWideChar;
OwnerId: PWideChar;
CareerStartDate: PWideChar;
CareerDueDate: PWideChar;
ProbationDueDate: PWideChar;
ReasonForDismissalId: PWideChar;
AccountId: PWideChar;
ManagerId: PWideChar;
odata_context: PWideChar;
i: Integer;
count_i: Integer;

begin
// This example assumes the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

http := CkHttp_Create();

queryParams := CkJsonObject_Create();
CkJsonObject_UpdateString(queryParams,'$filter','startswith(Field2,''Field2Value'')');

CkHttp_SetRequestHeader(http,'ForceUseSession','true');
CkHttp_SetRequestHeader(http,'BPMCSRF','{{BPMCSRF}}');

resp := CkHttp_QuickRequestParams(http,'GET','https://myserver.com/0/odata/Collection1',queryParams);
if (CkHttp_getLastMethodSuccess(http) = False) then
  begin
    Memo1.Lines.Add(CkHttp__lastErrorText(http));
    Exit;
  end;

sbResponseBody := CkStringBuilder_Create();
CkHttpResponse_GetBodySb(resp,sbResponseBody);

jResp := CkJsonObject_Create();
CkJsonObject_LoadSb(jResp,sbResponseBody);
CkJsonObject_putEmitCompact(jResp,False);

Memo1.Lines.Add('Response Body:');
Memo1.Lines.Add(CkJsonObject__emit(jResp));

respStatusCode := CkHttpResponse_getStatusCode(resp);
Memo1.Lines.Add('Response Status Code = ' + IntToStr(respStatusCode));
if (respStatusCode >= 400) then
  begin
    Memo1.Lines.Add('Response Header:');
    Memo1.Lines.Add(CkHttpResponse__header(resp));
    Memo1.Lines.Add('Failed.');
    CkHttpResponse_Dispose(resp);
    Exit;
  end;
CkHttpResponse_Dispose(resp);

// Sample JSON response:
// (Sample code for parsing the JSON response is shown below)

// {
//   "@odata.context": "https://myserver.com/0/odata/$metadata#Employee",
//   "value": [
//     {
//       "Id": "9842387d-069f-466c-9551-32cedbc16d90",
//       "CreatedOn": "2017-03-30T14:50:30Z",
//       "CreatedById": "76929f8c-7e15-4c64-bdb0-adc62d383727",
//       "ModifiedOn": "2017-03-31T07:27:18Z",
//       "ModifiedById": "76929f8c-7e15-4c64-bdb0-adc62d383727",
//       "ProcessListeners": 0,
//       "ContactId": "cad50d15-f28d-49fc-aa79-21615ac35b86",
//       "Name": "Mary King",
//       "OrgStructureUnitId": "43172897-fbd6-4bc1-b81b-55964ab558e6",
//       "Notes": "",
//       "JobId": "955472f0-56e6-df11-971b-001d60e938c6",
//       "FullJobTitle": "Customer manager",
//       "OwnerId": "76929f8c-7e15-4c64-bdb0-adc62d383727",
//       "CareerStartDate": "2019-04-07T00:00:00Z",
//       "CareerDueDate": "0001-01-01T00:00:00Z",
//       "ProbationDueDate": "0001-01-01T00:00:00Z",
//       "ReasonForDismissalId": "00000000-0000-0000-0000-000000000000",
//       "AccountId": "e308b781-3c5b-4ecb-89ef-5c1ed4da488e",
//       "ManagerId": "e17c9cd6-262d-481d-86a9-f09a82984e0e"
//     },
//     {
//       "Id": "3b952b60-2502-4ab2-a967-7f898f8b8b55",
//       "CreatedOn": "2017-03-30T14:51:27Z",
//       "CreatedById": "76929f8c-7e15-4c64-bdb0-adc62d383727",
//       "ModifiedOn": "2017-03-31T07:30:20Z",
//       "ModifiedById": "76929f8c-7e15-4c64-bdb0-adc62d383727",
//       "ProcessListeners": 0,
//       "ContactId": "27bbc601-2d48-4652-8d18-eb93e718a78c",
//       "Name": "Megan Lewis",
//       "OrgStructureUnitId": "43172897-fbd6-4bc1-b81b-55964ab558e6",
//       "Notes": "",
//       "JobId": "955472f0-56e6-df11-971b-001d60e938c6",
//       "FullJobTitle": "Customer manager",
//       "OwnerId": "76929f8c-7e15-4c64-bdb0-adc62d383727",
//       "CareerStartDate": "2019-11-10T00:00:00Z",
//       "CareerDueDate": "0001-01-01T00:00:00Z",
//       "ProbationDueDate": "2020-02-10T00:00:00Z",
//       "ReasonForDismissalId": "00000000-0000-0000-0000-000000000000",
//       "AccountId": "e308b781-3c5b-4ecb-89ef-5c1ed4da488e",
//       "ManagerId": "e17c9cd6-262d-481d-86a9-f09a82984e0e"
//     }
//   ]
// }

// Sample code for parsing the JSON response...
// Use this online tool to generate parsing code from sample JSON: Generate JSON Parsing Code

odata_context := CkJsonObject__stringOf(jResp,'"@odata.context"');
i := 0;
count_i := CkJsonObject_SizeOfArray(jResp,'value');
while i < count_i do
  begin
    CkJsonObject_putI(jResp,i);
    Id := CkJsonObject__stringOf(jResp,'value[i].Id');
    CreatedOn := CkJsonObject__stringOf(jResp,'value[i].CreatedOn');
    CreatedById := CkJsonObject__stringOf(jResp,'value[i].CreatedById');
    ModifiedOn := CkJsonObject__stringOf(jResp,'value[i].ModifiedOn');
    ModifiedById := CkJsonObject__stringOf(jResp,'value[i].ModifiedById');
    ProcessListeners := CkJsonObject_IntOf(jResp,'value[i].ProcessListeners');
    ContactId := CkJsonObject__stringOf(jResp,'value[i].ContactId');
    Name := CkJsonObject__stringOf(jResp,'value[i].Name');
    OrgStructureUnitId := CkJsonObject__stringOf(jResp,'value[i].OrgStructureUnitId');
    Notes := CkJsonObject__stringOf(jResp,'value[i].Notes');
    JobId := CkJsonObject__stringOf(jResp,'value[i].JobId');
    FullJobTitle := CkJsonObject__stringOf(jResp,'value[i].FullJobTitle');
    OwnerId := CkJsonObject__stringOf(jResp,'value[i].OwnerId');
    CareerStartDate := CkJsonObject__stringOf(jResp,'value[i].CareerStartDate');
    CareerDueDate := CkJsonObject__stringOf(jResp,'value[i].CareerDueDate');
    ProbationDueDate := CkJsonObject__stringOf(jResp,'value[i].ProbationDueDate');
    ReasonForDismissalId := CkJsonObject__stringOf(jResp,'value[i].ReasonForDismissalId');
    AccountId := CkJsonObject__stringOf(jResp,'value[i].AccountId');
    ManagerId := CkJsonObject__stringOf(jResp,'value[i].ManagerId');
    i := i + 1;
  end;

CkHttp_Dispose(http);
CkJsonObject_Dispose(queryParams);
CkStringBuilder_Dispose(sbResponseBody);
CkJsonObject_Dispose(jResp);

Curl Command

curl -G -d "$filter=startswith%28Field2,%27Field2Value%27%29"
	-H "ForceUseSession: true"
	-H "BPMCSRF: {{BPMCSRF}}"
https://myserver.com/0/odata/Collection1

Postman Collection Item JSON

{
  "name": "$filter parameter with startswith function",
  "protocolProfileBehavior": {
    "disableBodyPruning": true
  },
  "request": {
    "method": "GET",
    "header": [
      {
        "key": "ForceUseSession",
        "type": "text",
        "value": "true"
      },
      {
        "key": "BPMCSRF",
        "type": "text",
        "value": "{{BPMCSRF}}"
      }
    ],
    "body": {
      "mode": "raw",
      "raw": ""
    },
    "url": {
      "raw": "{{BaseURI}}/0/odata/{{CollectionName1}}?$filter=startswith({{FieldName2}},'{{FieldName2Value2}}')",
      "host": [
        "{{BaseURI}}"
      ],
      "path": [
        "0",
        "odata",
        "{{CollectionName1}}"
      ],
      "query": [
        {
          "key": "$filter",
          "value": "startswith({{FieldName2}},'{{FieldName2Value2}}')"
        }
      ]
    },
    "description": "Request for getting filtered object collection instances via the [$filter](http://docs.oasis-open.org/odata/odata/v4.01/odata-v4.01-part2-url-conventions.html#sec_SystemQueryOptionfilter) parameter with the [startswith](http://docs.oasis-open.org/odata/odata/v4.01/odata-v4.01-part2-url-conventions.html#sec_startswith) function."
  },
  "response": [
    {
      "name": "[200] Gets filtered object collection instances. The filter uses the “startswith” function",
      "originalRequest": {
        "method": "GET",
        "header": [
          {
            "key": "Accept",
            "type": "text",
            "value": "application/json"
          },
          {
            "key": "Content-Type",
            "type": "text",
            "value": "application/json; charset=utf-8"
          },
          {
            "key": "ForceUseSession",
            "type": "text",
            "value": "true"
          },
          {
            "key": "BPMCSRF",
            "type": "text",
            "value": "{{BPMCSRF}}"
          }
        ],
        "url": {
          "raw": "https://myserver.com/0/odata/Employee?$filter=startswith(FullJobTitle,'Custom')",
          "protocol": "https",
          "host": [
            "myserver",
            "com"
          ],
          "path": [
            "0",
            "odata",
            "Employee"
          ],
          "query": [
            {
              "key": "$filter",
              "value": "startswith(FullJobTitle,'Custom')"
            }
          ]
        }
      },
      "status": "OK",
      "code": 200,
      "_postman_previewlanguage": "json",
      "header": [
        {
          "key": "Cache-Control",
          "value": "no-cache"
        },
        {
          "key": "Pragma",
          "value": "no-cache"
        },
        {
          "key": "Content-Type",
          "value": "application/json; odata.metadata=minimal"
        },
        {
          "key": "Expires",
          "value": "-1"
        },
        {
          "key": "Server",
          "value": "Microsoft-IIS/10.0"
        },
        {
          "key": "OData-Version",
          "value": "4.0"
        },
        {
          "key": "X-AspNet-Version",
          "value": "4.0.30319"
        },
        {
          "key": "X-Powered-By",
          "value": "ASP.NET"
        },
        {
          "key": "X-Frame-Options",
          "value": "SAMEORIGIN"
        },
        {
          "key": "X-Content-Type-Options",
          "value": "nosniff"
        },
        {
          "key": "Date",
          "value": "Wed, 26 Feb 2020 14:52:52 GMT"
        },
        {
          "key": "Content-Length",
          "value": "1683"
        }
      ],
      "cookie": [
      ],
      "body": "{\n    \"@odata.context\": \"https://myserver.com/0/odata/$metadata#Employee\",\n    \"value\": [\n        {\n            \"Id\": \"9842387d-069f-466c-9551-32cedbc16d90\",\n            \"CreatedOn\": \"2017-03-30T14:50:30Z\",\n            \"CreatedById\": \"76929f8c-7e15-4c64-bdb0-adc62d383727\",\n            \"ModifiedOn\": \"2017-03-31T07:27:18Z\",\n            \"ModifiedById\": \"76929f8c-7e15-4c64-bdb0-adc62d383727\",\n            \"ProcessListeners\": 0,\n            \"ContactId\": \"cad50d15-f28d-49fc-aa79-21615ac35b86\",\n            \"Name\": \"Mary King\",\n            \"OrgStructureUnitId\": \"43172897-fbd6-4bc1-b81b-55964ab558e6\",\n            \"Notes\": \"\",\n            \"JobId\": \"955472f0-56e6-df11-971b-001d60e938c6\",\n            \"FullJobTitle\": \"Customer manager\",\n            \"OwnerId\": \"76929f8c-7e15-4c64-bdb0-adc62d383727\",\n            \"CareerStartDate\": \"2019-04-07T00:00:00Z\",\n            \"CareerDueDate\": \"0001-01-01T00:00:00Z\",\n            \"ProbationDueDate\": \"0001-01-01T00:00:00Z\",\n            \"ReasonForDismissalId\": \"00000000-0000-0000-0000-000000000000\",\n            \"AccountId\": \"e308b781-3c5b-4ecb-89ef-5c1ed4da488e\",\n            \"ManagerId\": \"e17c9cd6-262d-481d-86a9-f09a82984e0e\"\n        },\n        {\n            \"Id\": \"3b952b60-2502-4ab2-a967-7f898f8b8b55\",\n            \"CreatedOn\": \"2017-03-30T14:51:27Z\",\n            \"CreatedById\": \"76929f8c-7e15-4c64-bdb0-adc62d383727\",\n            \"ModifiedOn\": \"2017-03-31T07:30:20Z\",\n            \"ModifiedById\": \"76929f8c-7e15-4c64-bdb0-adc62d383727\",\n            \"ProcessListeners\": 0,\n            \"ContactId\": \"27bbc601-2d48-4652-8d18-eb93e718a78c\",\n            \"Name\": \"Megan Lewis\",\n            \"OrgStructureUnitId\": \"43172897-fbd6-4bc1-b81b-55964ab558e6\",\n            \"Notes\": \"\",\n            \"JobId\": \"955472f0-56e6-df11-971b-001d60e938c6\",\n            \"FullJobTitle\": \"Customer manager\",\n            \"OwnerId\": \"76929f8c-7e15-4c64-bdb0-adc62d383727\",\n            \"CareerStartDate\": \"2019-11-10T00:00:00Z\",\n            \"CareerDueDate\": \"0001-01-01T00:00:00Z\",\n            \"ProbationDueDate\": \"2020-02-10T00:00:00Z\",\n            \"ReasonForDismissalId\": \"00000000-0000-0000-0000-000000000000\",\n            \"AccountId\": \"e308b781-3c5b-4ecb-89ef-5c1ed4da488e\",\n            \"ManagerId\": \"e17c9cd6-262d-481d-86a9-f09a82984e0e\"\n        }\n    ]\n}"
    }
  ]
}