使用solrj和EasyNet.Solr进行原子更新

Solr 4.0（http://lucene.apache.org/solr/）已经发布了有一段时间了，其中Solr 4.0中有一个不错的特性：Atom Update，也就是原子更新。有了原子更新这个东东，我们就可以只更新某个字段。下面的代码演示了如何用solrj和EasyNet.Solr（http://easynet.codeplex.com）进行原子更新。

使用solrj进行原子更新：

import org.apache.solr.client.solrj.impl.ConcurrentUpdateSolrServer
import org.apache.solr.common.SolrInputDocument

object SolrTest extends App {
  val url = "http://localhost:8080/example/collection1"
  val server = new ConcurrentUpdateSolrServer(url, 100, 3)

  //init
  //atomSet
  atomAdd

  def init = {
    val doc = new SolrInputDocument()
    doc.addField("id", "F8V7067-APL-KIT")
    doc.addField("name", "Belkin Mobile Power Cord for iPod w/ Dock")
    doc.addField("features", "car power adapter")
    doc.addField("features", "white")

    server.add(doc)
    server.commit()
    server.shutdown()
  }

  def atomSet = {
    val doc = new SolrInputDocument()
    doc.addField("id", "F8V7067-APL-KIT")

    val setOper = new java.util.HashMap[String, String]()
    setOper.put("set", "iPod & iPod Mini USB 2.0 Cable")

    doc.addField("name", setOper)

    server.add(doc)
    server.commit()
    server.shutdown()
  }

  def atomAdd = {
    val doc = new SolrInputDocument()
    doc.addField("id", "F8V7067-APL-KIT")

    val addOper = new java.util.HashMap[String, String]()
    addOper.put("add", "add a test feature")

    doc.addField("features", addOper)

    server.add(doc)
    server.commit()
    server.shutdown()
  }
}

使用EasyNet.Solr进行原子更新：

using EasyNet.Solr.Commons;
using EasyNet.Solr.Impl;
using System;
using System.Collections;
using System.Collections.Generic;
using System.Web.Mvc;

namespace EasyNet.Solr.Website.Controllers
{
    public class IndexController : Controller
    {
        private OptimizeOptions optimizeOptions = new OptimizeOptions();
        private ISolrResponseParser<NamedList, ResponseHeader> binaryResponseHeaderParser = new BinaryResponseHeaderParser();
        private IUpdateParametersConvert<NamedList> updateParametersConvert = new BinaryUpdateParametersConvert();
        private ISolrUpdateConnection<NamedList, NamedList> solrUpdateConnection = new SolrUpdateConnection<NamedList, NamedList>() { ServerUrl = "http://localhost:8080/example/collection1", ContentType = "application/javabin" };
        private ISolrUpdateOperations<NamedList> updateOperations;

        public IndexController()
        {
            updateOperations = new SolrUpdateOperations<NamedList, NamedList>("/update", solrUpdateConnection, updateParametersConvert) { ResponseWriter = "javabin" };
        }
        //
        // GET: /Index/

        public ActionResult Index()
        {
            //Init();
            //AtomSet();
            AtomAdd();

            return View();
        }

        private void Init()
        {
            var docs = new List<SolrInputDocument>();
            var doc = new SolrInputDocument();
            doc.Add("id", new SolrInputField("id", "F8V7067-APL-KIT"));
            doc.Add("name", new SolrInputField("name", "Belkin Mobile Power Cord for iPod w/ Dock"));
            doc.Add("features", new SolrInputField("features", new String[] { "car power adapter", "white" }));

            docs.Add(doc);

            var result = updateOperations.Update(new UpdateOptions() { OptimizeOptions = optimizeOptions, Docs = docs });
            var header = binaryResponseHeaderParser.Parse(result);

            Response.Write(string.Format("Update Status:{0} QTime:{1}</br>", header.Status, header.QTime));
        }

        private void AtomSet()
        {
            var docs = new List<SolrInputDocument>();
            var doc = new SolrInputDocument();
            doc.Add("id", new SolrInputField("id", "F8V7067-APL-KIT"));

            var setOper = new Hashtable();
            setOper.Add("set", "iPod &amp; iPod Mini USB 2.0 Cable");

            doc.Add("name", new SolrInputField("name", setOper));

            docs.Add(doc);

            var result = updateOperations.Update(new UpdateOptions() { OptimizeOptions = optimizeOptions, Docs = docs });
            var header = binaryResponseHeaderParser.Parse(result);

            Response.Write(string.Format("Update Status:{0} QTime:{1}</br>", header.Status, header.QTime));
        }

        private void AtomAdd()
        {
            var docs = new List<SolrInputDocument>();
            var doc = new SolrInputDocument();
            doc.Add("id", new SolrInputField("id", "F8V7067-APL-KIT"));

            var addOper = new Hashtable();
            addOper.Add("add", "add a test feature ");

            doc.Add("features", new SolrInputField("features", addOper));

            docs.Add(doc);

            var result = updateOperations.Update(new UpdateOptions() { OptimizeOptions = optimizeOptions, Docs = docs });
            var header = binaryResponseHeaderParser.Parse(result);

            Response.Write(string.Format("Update Status:{0} QTime:{1}</br>", header.Status, header.QTime));
        }

    }

}

希望对大家有所帮助，也希望大家关注和使用EasyNet.Solr，如有任何关于Solr、Lucene、EasyNet.Solr等等问题，都可以加入EasyNet开源项目QQ群：181963043。