Pascal (Lazarus/Delphi)

JSON FindRecordString Example

See more JSON Examples

Demonstrates the FindRecordString method for searching an array of JSON records. The data used in this example is available at JSON sample data for FindRecordString.

Note: This example requires Chilkat v9.5.0.63 or later.

Pascal (Lazarus/Delphi)

program ChilkatDemo;

// Demonstrates using the Chilkat Pascal wrapper via the C bridge DLL.
// Builds as a console application under Lazarus (FPC) or Delphi.

{$IFDEF FPC}
  {$MODE DELPHI}
{$ENDIF}
{$APPTYPE CONSOLE}

uses
  {$IFDEF UNIX}
  cthreads,
  {$ENDIF}
  SysUtils,
  CkDllLoader,
  Chilkat.JsonObject;

// ---------------------------------------------------------------------------

procedure RunDemo;
var
  success: Boolean;
  json: TJsonObject;
  arrayPath: string;
  relativePath: string;
  value: string;
  caseSensitive: Boolean;
  retRelPath: string;
  id: string;

begin
  success := False;

  //  Note: This example requires Chilkat v9.5.0.63 or later.
  json := TJsonObject.Create;

  success := json.LoadFile('qa_data/json/qb_accounts.json');

  //  A sample of the content of qb_accounts.json is shown at the bottom of this example.
  //  The idea of FindRecordString is to search for a record matching one field,
  //  and then return the value of another field.

  //  For example, we want to find the "Id" for the record where Name = Advertising

  arrayPath := 'QueryResponse.Account';
  relativePath := 'Name';
  value := 'Advertising';
  caseSensitive := True;
  retRelPath := 'Id';

  id := json.FindRecordString(arrayPath,relativePath,value,caseSensitive,retRelPath);
  if (json.LastMethodSuccess <> True) then
    begin
      WriteLn('Record not found.');
      Exit;
    end;

  //  The Id should be 7.
  WriteLn('The Id of the Advertising account is ' + id);

  //  -----------------------------------------------------------------
  //  qb_accounts.json contains this data
  //  
  //  {
  //    "QueryResponse": {
  //      "Account": [
  //        {
  //          "Name": "Accounts Payable (A/P)",
  //          "SubAccount": false,
  //          "Description": "Description added during update.",
  //          "FullyQualifiedName": "Accounts Payable (A/P)",
  //          "Active": true,
  //          "Classification": "Liability",
  //          "AccountType": "Accounts Payable",
  //          "AccountSubType": "AccountsPayable",
  //          "CurrentBalance": -1602.67,
  //          "CurrentBalanceWithSubAccounts": -1602.67,
  //          "CurrencyRef": {
  //            "value": "USD",
  //            "name": "United States Dollar"
  //          },
  //          "domain": "QBO",
  //          "sparse": false,
  //          "Id": "33",
  //          "SyncToken": "1",
  //          "MetaData": {
  //            "CreateTime": "2016-09-10T10:12:02-07:00",
  //            "LastUpdatedTime": "2016-10-24T16:41:39-07:00"
  //          }
  //        },
  //        {
  //          "Name": "Accounts Receivable (A/R)",
  //          "SubAccount": false,
  //          "FullyQualifiedName": "Accounts Receivable (A/R)",
  //          "Active": true,
  //          "Classification": "Asset",
  //          "AccountType": "Accounts Receivable",
  //          "AccountSubType": "AccountsReceivable",
  //          "CurrentBalance": 5281.52,
  //          "CurrentBalanceWithSubAccounts": 5281.52,
  //          "CurrencyRef": {
  //            "value": "USD",
  //            "name": "United States Dollar"
  //          },
  //          "domain": "QBO",
  //          "sparse": false,
  //          "Id": "84",
  //          "SyncToken": "0",
  //          "MetaData": {
  //            "CreateTime": "2016-09-14T14:49:29-07:00",
  //            "LastUpdatedTime": "2016-09-17T13:16:17-07:00"
  //          }
  //        },
  //        {
  //          "Name": "Advertising",
  //          "SubAccount": false,
  //          "FullyQualifiedName": "Advertising",
  //          "Active": true,
  //          "Classification": "Expense",
  //          "AccountType": "Expense",
  //          "AccountSubType": "AdvertisingPromotional",
  //          "CurrentBalance": 0,
  //          "CurrentBalanceWithSubAccounts": 0,
  //          "CurrencyRef": {
  //            "value": "USD",
  //            "name": "United States Dollar"
  //          },
  //          "domain": "QBO",
  //          "sparse": false,
  //          "Id": "7",
  //          "SyncToken": "0",
  //          "MetaData": {
  //            "CreateTime": "2016-09-09T14:42:07-07:00",
  //            "LastUpdatedTime": "2016-09-09T14:42:07-07:00"
  //          }
  //        },
  //        {
  //          "Name": "Arizona Dept. of Revenue Payable",
  //          "SubAccount": false,
  //          "FullyQualifiedName": "Arizona Dept. of Revenue Payable",
  //          "Active": true,
  //          "Classification": "Liability",
  //          "AccountType": "Other Current Liability",
  //          "AccountSubType": "GlobalTaxPayable",
  //          "CurrentBalance": 0,
  //          "CurrentBalanceWithSubAccounts": 0,
  //          "CurrencyRef": {
  //            "value": "USD",
  //            "name": "United States Dollar"
  //          },
  //          "domain": "QBO",
  //          "sparse": false,
  //          "Id": "89",
  //          "SyncToken": "0",
  //          "MetaData": {
  //            "CreateTime": "2016-09-16T12:17:04-07:00",
  //            "LastUpdatedTime": "2016-09-17T13:05:01-07:00"
  //          }
  //        },
  //        {
  //          "Name": "Automobile",
  //          "SubAccount": false,
  //          "FullyQualifiedName": "Automobile",
  //          "Active": true,
  //          "Classification": "Expense",
  //          "AccountType": "Expense",
  //          "AccountSubType": "Auto",
  //          "CurrentBalance": 0,
  //          "CurrentBalanceWithSubAccounts": 0,
  //          "CurrencyRef": {
  //            "value": "USD",
  //            "name": "United States Dollar"
  //          },
  //          "domain": "QBO",
  //          "sparse": false,
  //          "Id": "55",
  //          "SyncToken": "0",
  //          "MetaData": {
  //            "CreateTime": "2016-09-14T10:15:53-07:00",
  //            "LastUpdatedTime": "2016-09-14T10:16:05-07:00"
  //          }
  //        },
  //  ...
  //  


  json.Free;

end;

// ---------------------------------------------------------------------------

begin

  try
    RunDemo;
  except
    on E: Exception do
      WriteLn('Unhandled exception: ', E.ClassName, ': ', E.Message);
  end;

  WriteLn;
  {$IFDEF MSWINDOWS}
  WriteLn('Press Enter to exit...');
  ReadLn;
  {$ENDIF}
end.