Question

我想用hibernate对距离进行排序，但是＆＃34; st_distance＆＃34;不行。日志：

----- org.hibernate.QueryException：没有节点的数据类型：org.hibernate.hql.internal.ast.tree.MethodNode - [METHOD_CALL] MethodNode：＆＃39;（＆＃39; + - [METHOD_NAME] IdentNode：＆＃39; st_distance＆＃39; {originalText = st_distance} - [EXPR_LIST] SqlNode：＆＃39; exprList＆＃39; + - [METHOD_CALL] MethodNode：＆＃39;（＆＃39; | + - [METHOD_NAME] IdentNode：＆＃39; POINT＆＃39; {originalText = POINT} | - [EXPR_LIST] SqlNode：＆＃39; exprList＆＃39; | + - [DOT] DotNode：＆＃39; facilitato0_.c_longitude＆＃ 39; {propertyName =经度，dereferenceType = PRIMITIVE，getPropertyPath =经度，路径= {synthetic-alias} .longitude，tableAlias = facilitato0_，className = com.kingox.ins.dao.entity.Facilitator，classAlias = null} | | + - [IDENT] IdentNode：＆＃39; {synthetic-alias}＆＃39; {originalText = {synthetic-alias}} | | - [IDENT] IdentNode：＆＃39;经度＆＃39; {originalText = longitude} | - [DOT] DotNode：＆＃39; facilitato0_.c_latitude＆＃39; {propertyName = latitude，dereferenceType = PRIMITIVE，getPropertyPath = latitude，path = {synthetic-alias} .latitude，tableAlias = facilitato 0_，className = com.kingox.ins.dao.entity.Facilitator，classAlias = null} | + - [IDENT] IdentNode：＆＃39; {synthetic-alias}＆＃39; {originalText = {synthetic-alias}} | - [IDENT] IdentNode：＆＃39;纬度＆＃39; {originalText = latitude} - [METHOD_CALL] MethodNode：＆＃39;（＆＃39; + - [METHOD_NAME] IdentNode：＆＃39; POINT＆＃39; {originalText = POINT} - [EXPR_LIST] SqlNode：＆＃39; exprList＆＃39; + - [PARAM] ParameterNode：＆＃39;？＆＃39; {ordinal = 0，expectedType = null} - [PARAM] ParameterNode：＆＃39;？＆＃39; {ordinal = 1，expectedType = null} [select id，name，st_distance（POINT（经度，纬度），POINT（？，？））为tmpDistance

Answer 1

Hibernate Spatial中的距离函数称为distance，而不是st_distance。

但无论如何，MySQL的Hibernate Spatial does not support distance。

Answer 2

我用过了，为我工作

StringBuffer sb = new StringBuffer();
        sb.append("select a  from BikeStationEntity a "
                + "order by distance (a.coordinates, :userLocation) ASC");

如何使用＆＃34; st_distance＆＃34;在hibernate hql和mysql 5.6.2中？

2 个答案: