Return Solr 4.7 突出显示的多值字段的所有相关值

Question

我正在使用 Solr 4.7 在我的服务器上启用标准突出显示。我的文档包含（除其他外）以下字段：

{
        "id": [
          "fdc3833a-0e4f-4314-ba8c"
        ],,
        "tag": [
          "solr",
          "solrJ",
          "solrCloud"
          "solrX"
        ],
        "title": "Solr question about highlighting",
        "description": "I am working to enable Standard Highlighting on my server with Solr 4.7. My documents contain (among the others) the following.........",
      }

在这三个字段中，只有 "tag" 是多值的。我在 solrconfig.xml 文件中的默认配置是：

<str name="hl">on</str>
<str name="hl.fl">content title description tag</str>
<str name="hl.snippets">2</str>

当我运行查询如：

https://<YOUR_PATH>/select?q=solr*&wt=json&indent=true

我得到以下亮点：

"highlighting": {
    "fdc3833a-0e4f-4314-ba8c": {
          "title": [
            "<b>Solr</b> question about highlighting"
          ],
          "summary": [
            "I am working to enable Standard Highlighting on my server with <b>Solr</b> 4.7. My documents contain (among the others) the following........."
          ],
          **"tag": [
            "<b>Solr</b>",
            "<b>SolrJ</b>"
          ]**
        }
}

虽然我希望获得所有标签。我发现 Solr 在多值字段中处理多个值，因为它们是突出显示的片段，所以因为我有 hl.snippets=2 只显示前两个值。如何获取标签的所有值？（显然，仅针对多值字段更改片段数量是不可接受的答案）。 Solr 4.7 有没有办法在高亮中处理多值字段？

我的期望是得到这样的回应：

"highlighting": {
"fdc3833a-0e4f-4314-ba8c": {
      "title": [
        "<b>Solr</b> question about highlighting"
      ],
      "summary": [
        "I am working to enable Standard Highlighting on my server with <b>Solr</b> 4.7. My documents contain (among the others) the following........."
      ],
      **"tag": [
        "<b>Solr</b>",
        "<b>SolrJ</b>",
        "<b>SolrCloud</b>",
        "<b>SolrX</b>"
      ]**
    }
}

Answer 1

在搜索文档和运行一些测试后，我发现在solrconfig.xml中设置参数hl.preserveMulti:

<str name="hl.preserveMulti">true</str>

不仅像文档所说的那样保留多值文档中值的顺序，而且returns 多值文档中所有值的原始顺序。所以如果我们设置上面提到的参数并且我们的索引中有以下文档：

{
        "id": [
          "fdc3833a-0e4f-4314-ba8c"
        ],,
        "tag": [
          "solr",
          "solrJ",
          "solrCloud"
          "solrX",
          "notRelevantTag"
        ],
        "title": "Solr question about highlighting",
        "description": "I am working to enable Standard Highlighting on my server with Solr 4.7. My documents contain (among the others) the following.........",
      }

查询：

https://<YOUR_PATH>/select?q=solr*&wt=json&indent=true

会给我一个突出显示的结果：

"highlighting": {
    "fdc3833a-0e4f-4314-ba8c": {
          "title": [
            "<b>Solr</b> question about highlighting"
          ],
          "summary": [
            "I am working to enable Standard Highlighting on my server with <b>Solr</b> 4.7. My documents contain (among the others) the following........."
          ],
          **"tag": [
            "<b>Solr</b>",
            "<b>SolrJ</b>",
            "<b>SolrCloud</b>",
            "<b>SolrX</b>",
            "notRelevantTag"
          ]**
        }
    }

Return Solr 4.7 突出显示的多值字段的所有相关值

Return all relevant values for highlighted multivalue fields for Solr 4.7

solr

solrj