기술 문서

HotPDF Component: Delphi에서 automated PDF preflight reports

HotPDF는 Delphi 및 C++Builder 애플리케이션을 위한 네이티브 VCL PDF 라이브러리입니다. 외부 PDF 런타임 배포 없이 PDF 생성, 편집, 양식, 주석, 암호화, 디지털 서명, Unicode 글꼴 처리, 표준 지향 출력, 프리플라이트 보고를 지원합니다.

이 글은 teams that need repeatable PDF intake, release gates, or customer-support diagnostics을 위한 글입니다. automated PDF preflight reports을 단순한 컴포넌트 호출이 아니라 운영 환경의 문서 엔지니어링으로 다룹니다.

실제 위험은 manual visual checks are inconsistent and do not create machine-readable evidence for operators, CI jobs, or support engineers입니다. 따라서 명확한 계약, 관찰 가능한 진단, 실제 고객 파일을 반영한 회귀 샘플이 필요합니다.

아키텍처 결정

Turn preflight into a policy service. profiles for intake, release, archive, print, and accessibility checks / severity thresholds, waiver rules, and customer-specific exceptions

  • profiles for intake, release, archive, print, and accessibility checks
  • severity thresholds, waiver rules, and customer-specific exceptions
  • report formats for humans, CI logs, dashboards, and support bundles
  • time limits, maximum file size, and quarantine behavior for damaged input

구현 흐름

Classify findings before deciding pass or fail. The order below keeps the workflow reviewable for Delphi and C++Builder teams.

  1. identify the business purpose before selecting the preflight profile
  2. run validation in an isolated step before editing or distributing the document
  3. normalize findings into stable codes, severities, locations, and remediation hints
  4. apply waiver policy after findings are classified, not before validation
  5. store the report beside the output or ticket that depends on it

검증 증거

Report fields that make findings actionable. Keep these fields with the output or support record.

  • profile version, input hash, validator version, elapsed time, and pass or fail result
  • finding code, severity, page, object reference, and operator-facing message
  • waiver identifier, reviewer, expiry, and affected issue codes
  • machine-readable summary for CI plus an HTML or text report for support

A report is only useful when it drives a decision

Preflight automation should map low-level PDF findings to product decisions. Operators need to know what failed, why it matters, whether retry is useful, and where the affected page or object can be inspected.

Decision table for automated PDF preflight reports

A decision table keeps product ownership visible when the same workflow is reused by a desktop tool, service job, and support utility.

DecisionEngineering reasonEvidence
profiles for intake, release, archive, print, and accessibility checksidentify the business purpose before selecting the preflight profileprofile version, input hash, validator version, elapsed time, and pass or fail result
severity thresholds, waiver rules, and customer-specific exceptionsrun validation in an isolated step before editing or distributing the documentfinding code, severity, page, object reference, and operator-facing message
report formats for humans, CI logs, dashboards, and support bundlesnormalize findings into stable codes, severities, locations, and remediation hintswaiver identifier, reviewer, expiry, and affected issue codes

Engineering review notes for automated PDF preflight reports

Use these review notes to make sure the feature has moved beyond a demo and can be defended during release, support, and customer escalation.

  • Decision: profiles for intake, release, archive, print, and accessibility checks. Implementation pressure point: run validation in an isolated step before editing or distributing the document. Acceptance evidence: waiver identifier, reviewer, expiry, and affected issue codes. Regression trigger: support staff need stable issue codes rather than parser exception text
  • Decision: severity thresholds, waiver rules, and customer-specific exceptions. Implementation pressure point: normalize findings into stable codes, severities, locations, and remediation hints. Acceptance evidence: machine-readable summary for CI plus an HTML or text report for support. Regression trigger: warnings can become release blockers when the target channel changes
  • Decision: report formats for humans, CI logs, dashboards, and support bundles. Implementation pressure point: apply waiver policy after findings are classified, not before validation. Acceptance evidence: profile version, input hash, validator version, elapsed time, and pass or fail result. Regression trigger: batch preflight should limit memory and CPU per file to protect queues

경계 사례

  • warnings can become release blockers when the target channel changes
  • batch preflight should limit memory and CPU per file to protect queues
  • repairing input before preflight can hide the original customer issue
  • support staff need stable issue codes rather than parser exception text

Delphi / C++Builder notes

HotPDF Component should sit behind a small service boundary that receives files, streams, profiles, and credentials, then returns output paths, warnings, metrics, and validation status. Important terms include preflight, validation profile, report automation, severity, waiver, CI gate.

Delphi 코드 예제

다음 Delphi 스케치는 이 주제에 맞는 실무형 서비스 경계를 보여 줍니다. 정책 검사, 로깅, 검증을 좁은 제품 호출 구간 밖에 두면 워크플로를 테스트하기 쉽습니다.

procedure RunPreflightBatch(const InputFile, ReportFile: string);
var
  Pdf: THotPDF;
  Profile: THPDFPreflightProfile;
  Report: string;
begin
  Pdf := THotPDF.Create(nil);
  try
    Profile := Pdf.GetBuiltInPreflightProfile('strict');
    Report := Pdf.CreatePreflightReportWithProfile(InputFile, Profile);
    TFile.WriteAllText(ReportFile, Report, TEncoding.UTF8);
    RaiseIfBlockingFindings(Report);
  finally
    Pdf.Free;
  end;
end;

운영 체크리스트

  • Run the workflow on an empty file, a normal customer file, and a worst-case file
  • Open the generated PDF with the target viewer, validator, printer, or downstream application
  • Log product version, profile version, input hash, output path, elapsed time, and warning count
  • Keep passwords, certificates, temporary files, and customer data under explicit retention rules
  • Add regression documents when a customer file exposes a new edge case

Product documentation

HotPDF Component