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Geospatial type handlers

Geospatial handlers live in net.hasor.dbvisitor.types.handler.geo. Add the JTS dependency before using them:

<dependency>
   <groupId>org.locationtech.jts</groupId>
   <artifactId>jts-core</artifactId>
   <version>1.19.0</version>
</dependency>

Formats

OpenGIS defines two formats:

• Well-Known Text (WKT) as strings
• Well-Known Binary (WKB) as byte[]

Store as WKT

Read as WKT and convert to WKB, or accept WKB and write WKT to the database.

• Use JtsGeometryWktAsWkbTypeHandler for this.

数据库     应用
 WKT  ->  WKB
 WKT  <-  WKB

Store as WKB

Read as WKB and convert to WKT, or accept WKT and write WKB to the database.

• Use JtsGeometryWkbAsWktTypeHandler for this.

数据库     应用
 WKB  ->  WKT
 WKB  <-  WKT

Store as WKB (HEX)

Read as WKB(HEX) and convert to WKT, or accept WKT and write WKB(HEX) to the database.

• Use JtsGeometryWkbHexAsWktTypeHandler for this.

  数据库       应用
WKB(HEX)  ->  WKT
WKB(HEX)  <-  WKT