delete_point--向量数据库VikingDB-火山引擎

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向量数据库VikingDB

切片（Point）

delete_point

概述

delete_point 用于删除一个知识库下的某个切片

请求参数

参数	类型	必选	默认值	备注
collectionName	String	否	--	知识库名称只能使用英文字母、数字、下划线_，并以英文字母开头，不能为空长度要求：[1, 64]
projectName	String	否	default	知识库所属项目，获取方式参见文档API 接入与技术支持若不指定该字段，则在default项目下创建。若需要操作指定项目下的知识库，需正确配置该字段。
resourceId	String	否	--	知识库唯一 id 可选择直接传 ResourceID，或同时传 CollectionName 和 ProjectName 作为知识库的唯一标识
pointId	String	是	--	要删除的切片 id

响应消息

字段	类型	备注
code	Integer	状态码
message	String	返回信息
requestId	String	标识每个请求的唯一标识符

请求示例

首次使用知识库 SDK ，可参考使用说明
本示例演示了知识库 Java SDK 中 DeletePoint 的基础使用方法，通过指定切片 ID 实现切片删除，使用前需配置鉴权参数（VOLC_AK/VOLC_SK 或 VIKING_API_KEY）。

package com.volcengine.vikingdb.runtime.knowledge.examples.point_delete;

import com.fasterxml.jackson.databind.ObjectWriter;
import com.volcengine.vikingdb.runtime.core.ApiClient;
import com.volcengine.vikingdb.runtime.core.RequestAddition;
import com.volcengine.vikingdb.runtime.core.auth.Auth;
import com.volcengine.vikingdb.runtime.core.auth.AuthWithAkSk;
import com.volcengine.vikingdb.runtime.core.auth.AuthWithApiKey;
import com.volcengine.vikingdb.runtime.enums.Scheme;
import com.volcengine.vikingdb.runtime.knowledge.model.CollectionMeta;
import com.volcengine.vikingdb.runtime.knowledge.model.request.AddDocV2Request;
import com.volcengine.vikingdb.runtime.knowledge.model.request.AddPointRequest;
import com.volcengine.vikingdb.runtime.knowledge.model.request.DeletePointRequest;
import com.volcengine.vikingdb.runtime.knowledge.model.response.AddDocResponse;
import com.volcengine.vikingdb.runtime.knowledge.model.response.BaseResponse;
import com.volcengine.vikingdb.runtime.knowledge.model.response.PointAddResponse;
import com.volcengine.vikingdb.runtime.knowledge.service.KnowledgeCollectionClient;
import com.volcengine.vikingdb.runtime.knowledge.service.KnowledgeService;

import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
import java.util.UUID;

public class Main {
    private static final ObjectWriter PRETTY_JSON = ApiClient.objectMapper.writerWithDefaultPrettyPrinter();
    private static final Scheme SCHEME = Scheme.HTTPS;
    private static final String HOST = "api-knowledgebase.mlp.cn-beijing.volces.com";
    private static final String REGION = "cn-beijing";
    private static final String PROJECT = "default";
    private static final String COLLECTION_NAME = "your_collection_name";
    private static final String COLLECTION_RESOURCE_ID = "";

    public static void main(String[] args) throws Exception {
        Auth auth = preferAuth();
        if (auth == null) {
            System.out.println("missing_auth: set VOLC_AK/VOLC_SK or VIKING_API_KEY");
            return;
        }
        KnowledgeService service = newKnowledgeService(auth);
        KnowledgeCollectionClient kc = service.collection(defaultCollectionMeta());

        String docId = "java-example-doc-" + UUID.randomUUID();
        String uri = "https://pdf.dfcfw.com/pdf/H3_AP202504281663850212_1.pdf";
        AddDocV2Request addDocReq = AddDocV2Request.builder()
                .docId(docId)
                .docName("Java SDK Knowledge Point Delete Example")
                .docType("pdf")
                .uri(uri)
                .build();
        AddDocResponse addDocResp = kc.addDocV2(addDocReq, new RequestAddition());
        printJson("add_doc_v2", addDocResp);

        Map<String, Object> field = new HashMap<>();
        field.put("field_name", "topic");
        field.put("field_type", "string");
        field.put("field_value", "your_topic");

        AddPointRequest addPointReq = AddPointRequest.builder()
                .docId(docId)
                .chunkType("text")
                .chunkTitle("your_chunk_title")
                .content("your_chunk_content")
                .fields(Collections.singletonList(field))
                .build();
        PointAddResponse addPointResp = kc.addPoint(addPointReq, new RequestAddition());
        printJson("add_point", addPointResp);

        String pointId = addPointResp != null && addPointResp.getData() != null ? addPointResp.getData().getPointId()
                : null;
        if (pointId == null || pointId.trim().isEmpty()) {
            System.out.println("point_id_empty");
            return;
        }

        BaseResponse resp = kc.deletePoint(DeletePointRequest.builder().pointId(pointId).build(),
                new RequestAddition());
        printJson("delete_point", resp);
    }

    private static KnowledgeService newKnowledgeService(Auth auth) {
        return new KnowledgeService(SCHEME, HOST, REGION, auth);
    }

    private static Auth preferAuth() {
        String ak = getEnv("VOLC_AK");
        String sk = getEnv("VOLC_SK");
        if (!ak.isEmpty() && !sk.isEmpty()) {
            return new AuthWithAkSk(ak, sk);
        }
        String apiKey = getEnv("VIKING_API_KEY");
        if (!apiKey.isEmpty()) {
            return new AuthWithApiKey(apiKey);
        }
        return null;
    }

    private static CollectionMeta defaultCollectionMeta() {
        return CollectionMeta.builder()
                .collectionName(COLLECTION_NAME)
                .projectName(PROJECT)
                .resourceId(COLLECTION_RESOURCE_ID)
                .build();
    }

    private static String getEnv(String name) {
        String v = System.getenv(name);
        if (v == null) {
            return "";
        }
        v = v.trim();
        return v.isEmpty() ? "" : v;
    }

    private static void printJson(String name, Object obj) throws Exception {
        if (obj == null) {
            System.out.println(name + ": null");
            return;
        }
        System.out.println(name + ": " + PRETTY_JSON.writeValueAsString(obj));
    }
}

最近更新时间：2026.03.26 17:20:14

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