SearchHit
CORE · interface · 类型合同
One search result.
score semantics stay algorithm-specific (direction and scale are not part of this contract), and document may be a projection that only exposes stored fields rather than the full record.
导入
ts
import type { SearchHit } from '@jangts/agent-core';js
/** @typedef {import('@jangts/agent-core').SearchHit} SearchHit */其他公开入口：@jangts/agent-core、@jangts/agent-core/types、@jangts/agent-core/structs。
定义
ts
interface SearchHit<Document>泛型参数
| 类型参数 | 约束 | 默认类型 |
|---|---|---|
Document | — | — |
字段结构
| 字段 | 类型 | 必需 | 说明 |
|---|---|---|---|
id | string | 必需 | 只读。见类型定义及调用场景。 |
score | number | 必需 | 只读。见类型定义及调用场景。 |
document | Readonly<Document> | 必需 | 只读。见类型定义及调用场景。 |
使用示例
- TextSearch：App 侧全文索引：按已声明字段建立局部索引，查询必须给出应用过滤器。
- VectorSearch：有边界的精确余弦检索：给定同一个向量空间，先过滤文档，再按余弦相似度排序。
先索引两份接口说明
入门 · Node.js
ts
import { TextSearch } from '@jangts/agent-core/kits/search';
type Document = { id: string; title: string; body: string };
const index = new TextSearch<Document>({ indexRevision: 'manual-v1', fields: ['title', 'body'], storedFields: ['title'] });
index.upsert({ id: 'workflow', title: 'Workflow', body: 'Define reusable agent nodes.' });
index.upsert({ id: 'model', title: 'Model', body: 'Bind a model provider.' });
console.log(index.search({ query: 'agent', limit: 5, filter: () => true }));js
import { TextSearch } from '@jangts/agent-core/kits/search';
const index = new TextSearch({ indexRevision: 'manual-v1', fields: ['title', 'body'], storedFields: ['title'] });
index.upsert({ id: 'workflow', title: 'Workflow', body: 'Define reusable agent nodes.' });
index.upsert({ id: 'model', title: 'Model', body: 'Bind a model provider.' });
console.log(index.search({ query: 'agent', limit: 5, filter: () => true }));相同 search 增加访问过滤、权重和快照
配置 · Node.js
允许用于过滤的元数据须登记为 storedFields；字段过滤必须依赖可信 App 身份，不能让模型自报身份。
ts
import { TextSearch } from '@jangts/agent-core/kits/search';
type Document = { id: string; title: string; body: string; audience: string };
const options = { indexRevision: 'manual-v2', fields: ['title', 'body'] as const, storedFields: ['title', 'audience'] as const, boost: { title: 3 }, combineWith: 'AND' as const };
const index = new TextSearch<Document>(options);
index.upsert({ id: 'workflow', title: 'Agent Workflow', body: 'Define reusable nodes.', audience: 'public' });
index.upsert({ id: 'private', title: 'Agent internals', body: 'Internal notes.', audience: 'owner' });
const restored = TextSearch.restore<Document>(options, index.snapshot());
console.log(restored.search({ query: 'agent', limit: 5, filter: document => document.audience === 'public' }));
await restored.remove('workflow');js
import { TextSearch } from '@jangts/agent-core/kits/search';
const options = { indexRevision: 'manual-v2', fields: ['title', 'body'], storedFields: ['title', 'audience'], boost: { title: 3 }, combineWith: 'AND' };
const index = new TextSearch(options);
index.upsert({ id: 'workflow', title: 'Agent Workflow', body: 'Define reusable nodes.', audience: 'public' });
index.upsert({ id: 'private', title: 'Agent internals', body: 'Internal notes.', audience: 'owner' });
const restored = TextSearch.restore(options, index.snapshot());
console.log(restored.search({ query: 'agent', limit: 5, filter: document => document.audience === 'public' }));
await restored.remove('workflow');