如何在 Apache solr 上进行构面组查询答案

【问题标题】：How to do facet group query on Apache solr如何在 Apache solr 上进行构面组查询
【发布时间】：2012-07-29 04:31:36
【问题描述】：

我正在对 solr 进行构面查询。它为我提供了构面及其每个项目的计数...但是现在我想对构面执行组查询。这使我根据组进行计数...

示例

以下是数据

Item1：耐克鞋（尺码：8,9,10） Item2 : Reebok 鞋款(尺码:8,9,10)

现在在这种情况下，我的品牌方面查询返回如下结果

耐克：3
锐步：3

我需要的结果是

耐克:1
锐步：1

问候

【问题讨论】：

标签： solr

【解决方案1】：

http://1XX.XXX.XXX.XXX:8080/solr/autocomplete/select?q=displayterm:new&wt=json&indent=true&q.op=and&fl=displayterm&group=true&group.field=displayterm

注意：&group=true&group.field=displayterm
此响应按 displayterm 分组

回应：

{
  "responseHeader":{
    "status":0,
    "QTime":6,
    "params":{
      "fl":"displayterm",
      "indent":"true",
      "q":"displayterm:new",
      "q.op":"and",
      "group.field":"displayterm",
      "group":"true",
      "wt":"json"}},
  "grouped":{
    "displayterm":{
      "matches":231,
      "groups":[{
          "groupValue":null,
          "doclist":{"numFound":220,"start":0,"docs":[
              {
                "displayterm":"Professional News"}]
          }},
        {
          "groupValue":"general",
          "doclist":{"numFound":1,"start":0,"docs":[
              {
                "displayterm":"General News"}]
          }},
        {
          "groupValue":"delhi",
          "doclist":{"numFound":2,"start":0,"docs":[
              {
                "displayterm":"New Delhi"}]
          }},
        {
          "groupValue":"care",
          "doclist":{"numFound":1,"start":0,"docs":[
              {
                "displayterm":"New Born Care Week"}]
          }},
        {
          "groupValue":"civil",
          "doclist":{"numFound":1,"start":0,"docs":[
              {
                "displayterm":"NEW CIVIL HOSPITAL, SURAT"}]
          }},
        {
          "groupValue":"blood",
          "doclist":{"numFound":1,"start":0,"docs":[
              {
                "displayterm":"Newlife Blood Bank"}]
          }},
        {
          "groupValue":"college",
          "doclist":{"numFound":1,"start":0,"docs":[
              {
                "displayterm":"New Medical College Hospital"}]
          }},
        {
          "groupValue":"degree",
          "doclist":{"numFound":1,"start":0,"docs":[
              {
                "displayterm":"Homeopathy(Degree Course) Regulation New"}]
          }},
        {
          "groupValue":"child",
          "doclist":{"numFound":1,"start":0,"docs":[
              {
                "displayterm":"Reproductive, Maternal, Newborn, Child and Adolescent Health"}]
          }},
        {
          "groupValue":"foundation",
          "doclist":{"numFound":1,"start":0,"docs":[
              {
                "displayterm":"The new century Medical and Educational foundation malegaon, Nashik"}]
          }}]}}}

【讨论】：

【解决方案2】：

您是否按照here 的说明启用了 group.facet=true。您至少需要 3.3

【讨论】：

group.facet 在 solrNet 0.4 中不可用。知道比修改 SolrNet 的源代码更好的解决方法吗？