源码分析

源码

1. 验证 Schema 的有效性
2. 解析 Source(Operation)
3. 执行

• validateSchema
  • validateRootTypes
  • validateDirectives
  • validateTypes
• parseSource
  • Source
  • Document
• execute
  • rootType -> 可以从此获取到诸多 fields

执行 execute

• execute
  • buildExecutionContext: 构建执行上下文信息，如 defaultResolver、operation 等
  • rootFields: 通过 获取到根路径的所有字段
  • executeOperation

Query

executeFields(exeContext, rootType, rootValue, path, rootFields);

• executeFields
  • executeField
    • source, args, contextValue, info
    • resolvFn
    • completeValue

Mutation

executeFieldsSerially(exeContext, rootType, rootValue, path, rootFields);

• executeFieldsSerially

Schema

• GraphQLSchema

• GraphQLObjectType

• GraphQLDirective

• isObjectType

• schema.getQueryType()

• schema.getMutationType()

• schema.getSubscriptionType()

• schema.getDirectives()