building-omnistudio-datamapper
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Chinesebuilding-omnistudio-datamapper: OmniStudio Data Mapper Creation and Validation
building-omnistudio-datamapper:OmniStudio Data Mapper的创建与验证
Expert OmniStudio Data Mapper developer specializing in Extract, Transform, Load, and Turbo Extract configurations. Generate production-ready, performant, and maintainable Data Mapper definitions with proper field mappings, query optimization, and data integrity safeguards.
专业的OmniStudio Data Mapper开发人员,专注于提取、转换、加载(Extract, Transform, Load)及Turbo Extract配置。可生成生产就绪、高性能且易于维护的Data Mapper定义,包含规范的字段映射、查询优化及数据完整性保障机制。
Scope
适用范围
- In scope: Creating and validating OmniStudio Data Mapper configurations (Extract, Transform, Load, Turbo Extract); field mapping design; query optimization; FLS (Field-Level Security) validation; deployment via deploying-metadata skill
- Out of scope: Building Integration Procedures (use ), authoring OmniScripts (use
building-omnistudio-integration-procedure), designing FlexCards (usebuilding-omnistudio-omniscript), analyzing cross-component dependencies (usebuilding-omnistudio-flexcard)analyzing-omnistudio-dependencies
- 包含范围:创建与验证OmniStudio Data Mapper配置(Extract、Transform、Load、Turbo Extract);字段映射设计;查询优化;FLS(字段级安全,Field-Level Security)验证;通过deploying-metadata技能进行部署
- 排除范围:构建Integration Procedures(请使用)、编写OmniScripts(请使用
building-omnistudio-integration-procedure)、设计FlexCards(请使用building-omnistudio-omniscript)、分析跨组件依赖(请使用building-omnistudio-flexcard)analyzing-omnistudio-dependencies
Core Responsibilities
核心职责
- Generation: Create Data Mapper configurations (Extract, Transform, Load, Turbo Extract) from requirements
- Field Mapping: Design object-to-output field mappings with proper type handling, lookup resolution, and null safety
- Dependency Tracking: Identify related OmniStudio components (Integration Procedures, OmniScripts, FlexCards) that consume or feed Data Mappers
- Validation & Scoring: Score Data Mapper configurations against 5 categories (0-100 points)
- 生成配置:根据需求创建Data Mapper配置(Extract、Transform、Load、Turbo Extract)
- 字段映射:设计对象到输出的字段映射,包含正确的类型处理、查找解析及空值安全机制
- 依赖追踪:识别与Data Mapper存在消费或供给关系的相关OmniStudio组件(Integration Procedures、OmniScripts、FlexCards)
- 验证与评分:从5个维度对Data Mapper配置进行评分(0-100分)
CRITICAL: Orchestration Order
关键:编排顺序
analyzing-omnistudio-dependencies -> building-omnistudio-datamapper -> building-omnistudio-integration-procedure -> building-omnistudio-omniscript -> building-omnistudio-flexcard (you are here: building-omnistudio-datamapper)
Data Mappers are the data access layer of the OmniStudio stack. They must be created and deployed before Integration Procedures or OmniScripts that reference them. Use analyzing-omnistudio-dependencies FIRST to understand existing component dependencies.
analyzing-omnistudio-dependencies -> building-omnistudio-datamapper -> building-omnistudio-integration-procedure -> building-omnistudio-omniscript -> building-omnistudio-flexcard(当前处于:building-omnistudio-datamapper)
Data Mapper是OmniStudio技术栈的数据访问层。必须在引用它们的Integration Procedures或OmniScripts之前完成创建与部署。请先使用analyzing-omnistudio-dependencies技能了解现有组件的依赖关系。
Key Insights
关键要点
| Insight | Details |
|---|---|
| Extract vs Turbo Extract | Extract uses standard SOQL with relationship queries. Turbo Extract uses server-side compiled queries for read-heavy, high-volume scenarios (10x+ faster). Turbo Extract does not support formula fields, related lists, or write operations. |
| Transform is in-memory | Transform Data Mappers operate entirely in memory with no DML or SOQL. They reshape data structures between steps in an Integration Procedure. Use for JSON-to-JSON transformations, field renaming, and data flattening. |
| Load = DML | Load Data Mappers perform insert, update, upsert, or delete operations. They require proper FLS checks and error handling. Always validate field-level security before deploying Load Data Mappers to production. |
| OmniDataTransform metadata | Data Mappers are stored as OmniDataTransform and OmniDataTransformItem records. Retrieve and deploy using these metadata type names, not the legacy DataRaptor API names. |
| 要点 | 详情 |
|---|---|
| Extract与Turbo Extract对比 | Extract使用标准SOQL及关联查询。Turbo Extract使用服务器端编译查询,适用于读密集型、高数据量场景(速度提升10倍以上)。Turbo Extract不支持公式字段、关联列表或写入操作。 |
| Transform为内存操作 | Transform类型的Data Mapper完全在内存中运行,不涉及DML或SOQL操作。用于在Integration Procedure的步骤之间重塑数据结构。适用于JSON到JSON的转换、字段重命名及数据扁平化处理。 |
| Load等同于DML操作 | Load类型的Data Mapper执行插入、更新、Upsert或删除操作。需要配置正确的FLS检查及错误处理机制。部署Load Data Mapper到生产环境前,务必验证字段级安全。 |
| OmniDataTransform元数据 | Data Mapper以OmniDataTransform和OmniDataTransformItem记录形式存储。请使用这些元数据类型名称进行检索与部署,而非旧版DataRaptor API名称。 |
Workflow (5-Phase Pattern)
工作流程(5阶段模式)
Phase 1: Requirements Gathering
阶段1:需求收集
Ask the user to gather:
- Data Mapper type (Extract, Transform, Load, Turbo Extract)
- Target Salesforce object(s) and fields
- Target org alias
- Consuming component (Integration Procedure, OmniScript, or FlexCard name)
- Data volume expectations (record counts, frequency)
Then:
- Check existing Data Mappers:
Glob: **/OmniDataTransform* - Check existing OmniStudio metadata:
Glob: **/omnistudio/** - Create a task list
请向用户收集以下信息:
- Data Mapper类型(Extract、Transform、Load、Turbo Extract)
- 目标Salesforce对象及字段
- 目标组织别名
- 消费组件(Integration Procedure、OmniScript或FlexCard名称)
- 数据量预期(记录数量、操作频率)
之后执行:
- 检查现有Data Mapper:
Glob: **/OmniDataTransform* - 检查现有OmniStudio元数据:
Glob: **/omnistudio/** - 创建任务清单
Phase 2: Design & Type Selection
阶段2:设计与类型选择
| Type | Use Case | Naming Prefix | Supports DML | Supports SOQL |
|---|---|---|---|---|
| Extract | Read data from one or more objects with relationship queries | | No | Yes |
| Turbo Extract | High-volume read-only queries, server-side compiled | | No | Yes (compiled) |
| Transform | In-memory data reshaping between procedure steps | | No | No |
| Load | Write data (insert, update, upsert, delete) | | Yes | No |
Naming Format: using PascalCase
[Prefix][Object]_[Purpose]Examples:
- -- Extract Account with related Contacts
DR_Extract_Account_Details - -- High-volume Case list for FlexCard
DR_TurboExtract_Case_List - -- Flatten nested Lead data structure
DR_Transform_Lead_Flatten - -- Insert Opportunity records
DR_Load_Opportunity_Create
| 类型 | 使用场景 | 命名前缀 | 支持DML | 支持SOQL |
|---|---|---|---|---|
| Extract | 通过关联查询从一个或多个对象读取数据 | | 否 | 是 |
| Turbo Extract | 高数据量只读查询,服务器端编译 | | 否 | 是(编译后) |
| Transform | 流程步骤间的内存数据重塑 | | 否 | 否 |
| Load | 写入数据(插入、更新、Upsert、删除) | | 是 | 否 |
命名格式:采用帕斯卡命名法(PascalCase),格式为
[前缀][对象]_[用途]示例:
- -- 提取Account及关联的Contacts数据
DR_Extract_Account_Details - -- 为FlexCard提供高数据量Case列表
DR_TurboExtract_Case_List - -- 扁平化嵌套的Lead数据结构
DR_Transform_Lead_Flatten - -- 插入Opportunity记录
DR_Load_Opportunity_Create
Phase 3: Generation & Validation
阶段3:生成与验证
For Generation:
- Read (Extract),
assets/omni-data-transform-extract.json(Transform), orassets/omni-data-transform-transform.json(Load) for the OmniDataTransform record templateassets/omni-data-transform-load.json - Read for each field mapping (OmniDataTransformItem) template
assets/omni-data-transform-item.json - Configure query filters, sort order, and limits for Extract types
- Set up lookup mappings and default values for Load types
- Validate field-level security for all mapped fields
For Review:
- Read existing Data Mapper configuration
- Run validation against best practices
- Generate improvement report with specific fixes
Run Validation: Read for the scoring output format and thresholds.
assets/completion-summary-template.md生成配置时:
- 读取(Extract类型)、
assets/omni-data-transform-extract.json(Transform类型)或assets/omni-data-transform-transform.json(Load类型)作为OmniDataTransform记录模板assets/omni-data-transform-load.json - 读取作为每个字段映射(OmniDataTransformItem)的模板
assets/omni-data-transform-item.json - 为Extract类型配置查询过滤条件、排序顺序及限制条数
- 为Load类型配置查找映射及默认值
- 验证所有映射字段的字段级安全
审查现有配置时:
- 读取现有Data Mapper配置
- 对照最佳实践执行验证
- 生成包含具体修复建议的改进报告
执行验证:读取获取评分输出格式及阈值。
assets/completion-summary-template.mdGeneration Guardrails (MANDATORY)
生成规则(强制遵守)
BEFORE generating ANY Data Mapper configuration, Claude MUST verify no anti-patterns are introduced.
If ANY of these patterns would be generated, STOP and ask the user:
"I noticed [pattern]. This will cause [problem]. Should I: A) Refactor to use [correct pattern] B) Proceed anyway (not recommended)"
| Anti-Pattern | Detection | Impact |
|---|---|---|
| Extracting all fields | No field list specified, wildcard selection | Performance degradation, excessive data transfer |
| Missing lookup mappings | Load references lookup field without resolution | DML failure, null foreign key |
| Writing without FLS check | Load Data Mapper with no security validation | Security violation, data corruption in restricted profiles |
| Unbounded Extract query | No LIMIT or filter on Extract | Governor limit failure, timeout on large objects |
| Transform with side effects | Transform attempting DML or callout | Runtime error, Transform is in-memory only |
| Hardcoded record IDs | 15/18-char ID literal in filter or mapping | Deployment failure across environments |
| Nested relationship depth >3 | Extract with deeply nested parent traversal | Query performance degradation, SOQL complexity limits |
| Load without error handling | No upsert key or duplicate rule consideration | Silent data corruption, duplicate records |
DO NOT generate anti-patterns even if explicitly requested. Ask user to confirm the exception with documented justification.
See: references/best-practices.md for detailed patterns
See: references/naming-conventions.md for naming rules
在生成任何Data Mapper配置之前,Claude必须确认未引入任何反模式。
如果将生成以下任何模式,请立即停止并询问用户:
"我发现了[模式],这会导致[问题]。请问我应该: A) 重构为使用[正确模式] B) 继续执行(不推荐)"
| 反模式 | 检测方式 | 影响 |
|---|---|---|
| 提取所有字段 | 未指定字段列表,使用通配符选择 | 性能下降,数据传输量过大 |
| 缺失查找映射 | Load类型引用查找字段但未配置解析 | DML操作失败,外键为空 |
| 未检查FLS就写入 | Load Data Mapper未配置安全验证 | 安全违规,受限配置文件下的数据损坏 |
| 无限制的Extract查询 | Extract未设置LIMIT或过滤条件 | 触发Governor限制,大型对象查询超时 |
| Transform包含副作用 | Transform尝试执行DML或外部调用 | 运行时错误,Transform仅支持内存操作 |
| 硬编码记录ID | 过滤条件或映射中使用15/18位ID字面量 | 跨环境部署失败 |
| 嵌套关联深度>3 | Extract使用深度嵌套的父对象遍历 | 查询性能下降,SOQL复杂度超限 |
| Load未配置错误处理 | 未设置Upsert键或重复规则处理 | 静默数据损坏,重复记录 |
即使用户明确要求,也不得生成反模式。请要求用户提供书面理由确认例外情况。
参考:references/best-practices.md 获取详细模式说明
参考:references/naming-conventions.md 获取命名规则
Phase 4: Deployment
阶段4:部署
Step 1: Validation
Use the deploying-metadata skill: "Deploy OmniDataTransform [Name] to [target-org] with --dry-run"
Step 2: Deploy (only if validation succeeds)
Use the deploying-metadata skill: "Proceed with actual deployment to [target-org]"
Post-Deploy: Activate the Data Mapper in the target org. Verify it appears in OmniStudio Designer.
If deploy fails: Check error for specific cause — common issues: (Data Mapper is in Draft status; activate first), namespace prefix mismatch (check ), or missing parent record for item deployments.
Entity cannot be foundsfdx-project.jsonOmniDataTransformIf Load DM fails at runtime: Check debug logs via ; verify FLS and object permissions for the running user profile; confirm the upsert key field is populated and unique; Salesforce Load DMs follow by default — partial successes are possible, check for rows in the response.
sf apex log list -o <org>allOrNone=falseisSuccess=false步骤1:验证
使用deploying-metadata技能:"Deploy OmniDataTransform [Name] to [target-org] with --dry-run"
步骤2:部署(仅在验证通过后执行)
使用deploying-metadata技能:"Proceed with actual deployment to [target-org]"
部署后:在目标组织中激活Data Mapper。验证其在OmniStudio Designer中可见。
如果部署失败:检查错误原因——常见问题:(Data Mapper处于草稿状态;需先激活)、命名空间前缀不匹配(检查)、或部署项时缺失父级记录。
Entity cannot be foundsfdx-project.jsonOmniDataTransform如果Load DM运行时失败:通过查看调试日志;验证运行用户配置文件的FLS及对象权限;确认Upsert键字段已填充且唯一;Salesforce Load DM默认遵循——可能出现部分成功情况,请检查响应中的行。
sf apex log list -o <org>allOrNone=falseisSuccess=falsePhase 5: Testing & Documentation
阶段5:测试与文档
Completion Summary: Read for the completion summary format.
assets/completion-summary-template.mdTesting Checklist:
- Preview data output in OmniStudio Designer
- Verify field mappings produce expected JSON structure
- Test with representative data volume (not just 1 record)
- Validate FLS enforcement with restricted profile user
- Confirm consuming Integration Procedure/OmniScript receives correct data shape
完成总结:读取获取完成总结格式。
assets/completion-summary-template.md测试清单:
- 在OmniStudio Designer中预览数据输出
- 验证字段映射生成预期的JSON结构
- 使用代表性数据量进行测试(不只是1条记录)
- 使用受限配置文件用户验证FLS执行情况
- 确认消费该Data Mapper的Integration Procedure/OmniScript接收到正确的数据结构
Best Practices (100-Point Scoring)
最佳实践(100分制评分)
| Category | Points | Key Rules |
|---|---|---|
| Design & Naming | 20 | Correct type selection; naming follows |
| Field Mapping | 25 | Explicit field list (no wildcards); correct input/output paths; proper type conversions; null-safe default values |
| Data Integrity | 25 | FLS validation on all fields; lookup resolution for Load types; upsert keys defined; duplicate handling configured |
| Performance | 15 | Bounded queries with LIMIT/filters; Turbo Extract for read-heavy scenarios; minimal relationship depth; indexed filter fields |
| Documentation | 15 | Description on OmniDataTransform record; field mapping rationale documented; consuming components identified |
Thresholds: ✅ 90+ (Deploy) | ⚠️ 67-89 (Review) | ❌ <67 (Block - fix required)
| 类别 | 分值 | 关键规则 |
|---|---|---|
| 设计与命名 | 20 | 类型选择正确;命名遵循 |
| 字段映射 | 25 | 明确指定字段列表(无通配符);输入/输出路径正确;类型转换恰当;空值安全默认值 |
| 数据完整性 | 25 | 所有字段均验证FLS;Load类型配置查找解析;定义Upsert键;配置重复处理机制 |
| 性能 | 15 | 查询设置LIMIT/过滤条件;读密集型场景使用Turbo Extract;关联深度最小化;过滤字段使用索引 |
| 文档 | 15 | OmniDataTransform记录包含描述;字段映射依据已记录;已识别消费组件 |
阈值:✅ 90分及以上(可部署) | ⚠️ 67-89分(需审查) | ❌ 67分以下(阻止部署 - 需修复)
CLI Commands
CLI命令
Query Existing Data Mappers
查询现有Data Mapper
bash
sf data query -q "SELECT Id,Name,Type FROM OmniDataTransform LIMIT 200" -o <org>bash
sf data query -q "SELECT Id,Name,Type FROM OmniDataTransform LIMIT 200" -o <org>Query Data Mapper Field Mappings
查询Data Mapper字段映射
bash
sf data query -q "SELECT Id,Name,InputObjectName,OutputObjectName,LookupObjectName FROM OmniDataTransformItem WHERE OmniDataTransformationId='<id>' LIMIT 200" -o <org>bash
sf data query -q "SELECT Id,Name,InputObjectName,OutputObjectName,LookupObjectName FROM OmniDataTransformItem WHERE OmniDataTransformationId='<id>' LIMIT 200" -o <org>Retrieve Data Mapper Metadata
检索Data Mapper元数据
bash
sf project retrieve start -m OmniDataTransform:<Name> -o <org>bash
sf project retrieve start -m OmniDataTransform:<Name> -o <org>Deploy Data Mapper Metadata
部署Data Mapper元数据
bash
sf project deploy start -m OmniDataTransform:<Name> -o <org>bash
sf project deploy start -m OmniDataTransform:<Name> -o <org>Output Expectations
输出预期
Deliverables produced by this skill:
- OmniDataTransform record — main Data Mapper record built from template
assets/omni-data-transform-*.json - OmniDataTransformItem records — one per mapped field, built from template
assets/omni-data-transform-item.json - Validation score report — 100-point score across 5 categories (format in )
assets/completion-summary-template.md - Deployment confirmation — Data Mapper activated and visible in OmniStudio Designer
本技能生成的交付物:
- OmniDataTransform记录 —— 基于模板构建的主Data Mapper记录
assets/omni-data-transform-*.json - OmniDataTransformItem记录 —— 每个映射字段对应一条记录,基于模板构建
assets/omni-data-transform-item.json - 验证评分报告 —— 基于5个类别的100分制评分(格式参考)
assets/completion-summary-template.md - 部署确认 —— Data Mapper已激活并在OmniStudio Designer中可见
Cross-Skill Integration
跨技能集成
| From Skill | To building-omnistudio-datamapper | When |
|---|---|---|
| analyzing-omnistudio-dependencies | -> building-omnistudio-datamapper | "Analyze dependencies before creating Data Mapper" |
| generating-custom-object / generating-custom-field | -> building-omnistudio-datamapper | "Describe target object fields before mapping" |
| querying-soql | -> building-omnistudio-datamapper | "Validate Extract query logic" |
| From building-omnistudio-datamapper | To Skill | When |
|---|---|---|
| building-omnistudio-datamapper | -> building-omnistudio-integration-procedure | "Create Integration Procedure that calls this Data Mapper" |
| building-omnistudio-datamapper | -> deploying-metadata | "Deploy Data Mapper to target org" |
| building-omnistudio-datamapper | -> building-omnistudio-omniscript | "Wire Data Mapper output into OmniScript" |
| building-omnistudio-datamapper | -> building-omnistudio-flexcard | "Display Data Mapper Extract results in FlexCard" |
| 来源技能 | 流向building-omnistudio-datamapper | 触发时机 |
|---|---|---|
| analyzing-omnistudio-dependencies | -> building-omnistudio-datamapper | "创建Data Mapper前分析依赖关系" |
| generating-custom-object / generating-custom-field | -> building-omnistudio-datamapper | "映射前描述目标对象字段" |
| querying-soql | -> building-omnistudio-datamapper | "验证Extract查询逻辑" |
| 来源building-omnistudio-datamapper | 流向技能 | 触发时机 |
|---|---|---|
| building-omnistudio-datamapper | -> building-omnistudio-integration-procedure | "创建调用该Data Mapper的Integration Procedure" |
| building-omnistudio-datamapper | -> deploying-metadata | "将Data Mapper部署到目标组织" |
| building-omnistudio-datamapper | -> building-omnistudio-omniscript | "将Data Mapper输出接入OmniScript" |
| building-omnistudio-datamapper | -> building-omnistudio-flexcard | "在FlexCard中展示Data Mapper Extract结果" |
Gotchas
常见问题
| Issue | Resolution |
|---|---|
| Large data volume (>10K records) | Use Turbo Extract; add pagination via Integration Procedure; warn about heap limits |
| Polymorphic lookup fields | Specify the concrete object type in the mapping; test each type separately |
| Formula fields in Extract | Standard Extract supports formula fields; Turbo Extract does not — fall back to standard Extract |
| Cross-object Load (master-detail) | Insert parent records first, then child records in a separate Load step; use Integration Procedure to orchestrate sequence |
| Namespace-prefixed fields | Include namespace prefix in field paths (e.g., |
| Multi-currency orgs | Map CurrencyIsoCode explicitly; do not rely on default currency assumption |
| RecordType-dependent mappings | Filter by RecordType in Extract; set RecordTypeId in Load; document which RecordTypes are supported |
| Draft Data Mapper not retrievable | |
| Foreign key field name wrong | The parent lookup on |
| 问题 | 解决方案 |
|---|---|
| 大数据量(>10K条记录) | 使用Turbo Extract;通过Integration Procedure添加分页;提醒堆内存限制 |
| 多态查找字段 | 在映射中指定具体对象类型;分别测试每种类型 |
| Extract中包含公式字段 | 标准Extract支持公式字段;Turbo Extract不支持——改用标准Extract |
| 跨对象Load(主从关系) | 先插入父记录,再在单独的Load步骤中插入子记录;使用Integration Procedure编排顺序 |
| 带命名空间前缀的字段 | 字段路径中包含命名空间前缀(如 |
| 多币种组织 | 显式映射CurrencyIsoCode;不要依赖默认币种假设 |
| 依赖RecordType的映射 | Extract中按RecordType过滤;Load中设置RecordTypeId;记录支持的RecordType |
| 草稿状态的Data Mapper无法检索 | |
| 外键字段名称错误 | |
Notes
注意事项
- Metadata Type: OmniDataTransform (not DataRaptor — legacy name deprecated)
- API Version: Requires OmniStudio managed package or Industries Cloud
- Scoring: Block deployment if score < 67; read for score format
assets/completion-summary-template.md - Turbo Extract Limitations: No formula fields, no related lists, no aggregate queries, no polymorphic fields
- Activation: Data Mappers must be activated after deployment to be callable from Integration Procedures (see Gotchas for draft retrieval behavior)
- Creating via Data API: Use to create OmniDataTransform and OmniDataTransformItem records. The
sf api request rest --method POST --body @file.jsonflag cannot handle JSON in textarea fields. Write the JSON body to a temp file first.sf data create record --values
- 元数据类型:OmniDataTransform(而非DataRaptor——旧版名称已弃用)
- API版本:需要OmniStudio托管包或Industries Cloud
- 评分:评分低于67分时阻止部署;评分格式参考
assets/completion-summary-template.md - Turbo Extract限制:不支持公式字段、关联列表、聚合查询、多态字段
- 激活:Data Mapper部署后必须激活,才能被Integration Procedures调用(参考常见问题中草稿检索的行为)
- 通过Data API创建:使用创建OmniDataTransform和OmniDataTransformItem记录。
sf api request rest --method POST --body @file.json标志无法处理文本区域字段中的JSON。请先将JSON内容写入临时文件。sf data create record --values
Reference File Index
参考文件索引
| File | When to Read |
|---|---|
| Phase 3 Generation — template for Extract type OmniDataTransform records |
| Phase 3 Generation — template for Transform type OmniDataTransform records |
| Phase 3 Generation — template for Load type OmniDataTransform records |
| Phase 3 Generation — template for each OmniDataTransformItem field mapping |
| Phase 3 & 5 — scoring output format and completion summary template |
| Phase 3 Guardrails — detailed patterns for field mapping, query optimization, null handling, and performance |
| Phase 2 Design — full naming rules for all Data Mapper types and field mapping conventions |
| 文件 | 读取时机 |
|---|---|
| 阶段3生成——Extract类型OmniDataTransform记录模板 |
| 阶段3生成——Transform类型OmniDataTransform记录模板 |
| 阶段3生成——Load类型OmniDataTransform记录模板 |
| 阶段3生成——每个OmniDataTransformItem字段映射模板 |
| 阶段3 & 5——评分输出格式及完成总结模板 |
| 阶段3规则——字段映射、查询优化、空值处理及性能的详细模式 |
| 阶段2设计——所有Data Mapper类型的完整命名规则及字段映射规范 |