Method SearchSimilar

pkg/knowledge/manager.go:520–553

SearchSimilar 搜索相似知识

(ctx context.Context, id string, maxResults int)

// SearchSimilar 搜索相似知识
func (m *manager) SearchSimilar(ctx context.Context, id string, maxResults int) ([]*SearchResult, error) {
	item, err := m.Get(ctx, id)
	if err != nil {
		return nil, fmt.Errorf("knowledge: failed to get item for similarity search: %w", err)
	}

	if len(item.Embedding) == 0 && m.corePipeline == nil {
		return nil, errors.New("knowledge: item has no embedding for similarity search")
	}

	// 优先使用原有向量
	if len(item.Embedding) > 0 {
		query := &SearchQuery{
			Vector:     item.Embedding,
			Strategy:   StrategyVector,
			Namespace:  item.Namespace,
			MaxResults: maxResults,
		}
		return m.Search(ctx, query)
	}

	// 回退到核心管线的向量检索（使用文本重新嵌入）
	if m.corePipeline != nil {
		hits, err := m.corePipeline.Search(ctx, item.Content, maxResults, map[string]any{
			"namespace": item.Namespace,
		})
		if err != nil {
			return nil, fmt.Errorf("knowledge: core similarity search failed: %w", err)
		}
		return convertCoreHits(hits), nil
	}

	return nil, errors.New("knowledge: no embedding available for similarity search")
}

// AddRelation 添加知识关系
func (m *manager) AddRelation(ctx context.Context, fromID, toID string, relationType RelationType, weight float64, label string) error {