Ninjaframework、Morphia 和 GeoSpatial 索引
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【中文标题】Ninjaframework、Morphia 和 GeoSpatial 索引【英文标题】:Ninjaframework, Morphia and GeoSpatial indexes 【发布时间】:2016-11-09 00:18:18 【问题描述】:我正在尝试在 MongoDB 中存储和查询地理坐标。我将 Ninjaframework 与 ninja-mongodb 模块一起使用,特别是使用 Morphia。
有坐标的实体是这样的
@Entity
@Indexes(
@Index(fields = @Field(value="coordinates", type = IndexType.GEO2DSPHERE))
)
public class Place
@Id
public ObjectId id;
public String google_places_id;
public String name;
public Point coordinates;
创建对象并查询它们的代码如下所示
try
List<models.lc.core.Place> lcPlaces = mongoDB.getDatastore().find(Place.class).field("coordinates").near(lat, lng).asList();
ObjectMapper mapper = new ObjectMapper();
mapper.configure( DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
Places places = mapper.readValue(Http.Get(url), Places.class);
for(models.google.Place place:places.results)
models.lc.core.Place p = new models.lc.core.Place();
p.name = place.name;
p.coordinates = GeoJson.point(place.geometry.location.lat, place.geometry.location.lng);
p.google_places_id = place.place_id;
mongoDB.save(p);
return new Result(HttpStatus.OK_200).json().render(places);
//return new Result(HttpStatus.OK_200).text().render(Http.dumpInputStream(Http.Get(url)));
catch (Exception e)
Places response = new Places();
response.status = url;
return new Result(HttpStatus.BAD_REQUEST_400).json().render(e);
我收到此错误消息
"errorMessage": "error processing query: ns=core-api.PlaceTree: GEONEAR field=coordinates maxdist=1.79769e+308 isNearSphere=0\nSort: \nProj: \n planner returned error: unable to find index for $geoNear query",
"errorCode": 2,
"message": "Query failed with error code 2 and error message 'error processing query: ns=core-api.PlaceTree: GEONEAR field=coordinates maxdist=1.79769e+308 isNearSphere=0\nSort: \nProj: \n planner returned error: unable to find index for $geoNear query' on server localhost:27017",
"localizedMessage": "Query failed with error code 2 and error message 'error processing query: ns=core-api.PlaceTree: GEONEAR field=coordinates maxdist=1.79769e+308 isNearSphere=0\nSort: \nProj: \n planner returned error: unable to find index for $geoNear query' on server localhost:27017",
"suppressed": []
我尝试调用 mongoDB.ensureIndexes(true);它确实在坐标上创建索引。但我仍然收到上面粘贴的错误。
互联网没有帮助,我希望有人可以。
非常感谢!
【问题讨论】:
在手动创建索引后它可以工作,所以问题在于注释索引的创建 - 我认为 【参考方案1】:你能用 morphia 创建的索引定义和你手动创建的索引定义提交issue 吗?如果 morphia 正在创建错误的索引,我想修复它。谢谢。
【讨论】:
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