我设置了 Solr 4.3.0,并且正在尝试将 SpatialRecursivePrefixTreeFieldType 用于空间字段。数据来自 MySQL 几何字段,SQL 查询使用AsText(). 基本查询如下所示:
SELECT AsText(data_geo) as data_geo FROM table;
data_geo 字段在 schema.xml 中定义为:
<field name="data_geo" type="location_rpt" indexed="true" stored="true" 
    multiValued="false" />`
<fieldType name="location_rpt" class="solr.SpatialRecursivePrefixTreeFieldType" 
    spatialContextFactory="com.spatial4j.core.context.jts.JtsSpatialContextFactory"
    geo="true" distErrPct="0.025" maxDistErr="0.000009" units="degrees" />
当我执行基本的非地理过滤查询时,响应如下所示:
{
  "responseHeader": {
    "status": 0,
    "QTime": 0,
    "params": {
    "indent": "true",
    "q": "*:*",
    "_": "1384375755970",
    "wt": "json"
    }
  },
  "response": {
    "numFound": 1,
    "start": 0,
    "docs": [
      {
        "date_modified": "2013-11-13T16:53:57Z",
        "id": "165733_0_1",
        "data_geo": "POINT(43.87910249999999 -103.4590667)",
        "_version_": 1451618631810023400
      }
    ]
  }
}
添加 {!geofilt} 会消除所有结果,即使上面的点在我要过滤的点的 10 公里范围内:
{
  "responseHeader": {
    "status": 0,
    "QTime": 1,
    "params": {
      "indent": "true",
      "q": "*:*",
      "_": "1384376149059",
      "wt": "json",
      "fq": "{!geofilt pt=43.879103,-103.459067 sfield=data_geo d=10}"
    }
  },
  "response": {
    "numFound": 0,
    "start": 0,
    "docs": []
  }
}
有谁知道这里发生了什么?我不知道问题是在索引方面还是在查询方面;我找不到任何关于将 MySQL 与 Solr DataImportHandler 和新的 SpatialRecursivePrefixTreeFieldType 一起使用的文档。
谢谢!