geoserver + OpenLayers + Postgresql 怎么实现周边查询

geoserver + OpenLayers + Postgresql 如何实现周边查询
请教各位高手,

geoserver + OpenLayers + Postgresql 如何实现周边查询

??????????????????????

[解决办法]
周边查询 ？详细描叙下，怎么个场景？
[解决办法]
用Filter过滤，Filter支持的空间算子：Equals, Disjoint, Touches, Within, Overlaps, 
Crosses, Intersects, and Contains