HANA Plugin

Supports direct access to a HANA database.

A free version of HANA (HANA Express Edition) can be downloaded at the link below.

You need HANA’s JDBC driver ngdbc.jar to connect to HANA. Its license does not allow redistribution, so you have to download it separately. It is part of HANA Express Edition.

References

Maven

Note that the groupId is org.geotools.jdbc for this and other JDBC plugin modules.

<dependency>
   <groupId>org.geotools.jdbc</groupId>
   <artifactId>gt-jdbc-hana</artifactId>
   <version>${geotools.version}</version>
 </dependency>

Connection Parameters

Parameter Description
“dbtype” Must be the string “hana”
“host” Machine name or IP address to connect to
“instance” Instance of the database
“database” Database to connect to. Leave empty in case of single-container databases. Set to SYSTEMDB to connect to the system database of a multi-container database.
“schema” The database schema to access
“user” User name
“passwd” Password

Creating

Here is an example of connecting:

Map params = new HashMap();
params.put("dbtype", "hana");       //must be hana
params.put("host", "localhost");    //the name or ip address of the machine running HANA
params.put("instance", "00");       //the instance to connect to
params.put("database", "GT");       //the name of the database to connect to
params.put("schema", "geotools");   //the table schema
params.put("user", "SYSTEM");       //the user to connect with
params.put("passwd", "pw");         //the password of the user

DataStore datastore = DataStoreFinder.getDataStore(params);

Advanced Geotools Parameters

Parameter Description
“encode functions” Flag controlling if a set of filter functions are translated directly in SQL. Default is false.

Importing spatial reference systems

HANA includes only a few spatial reference systems by default. Therefore, the plugin contains an application for installing all EPSG spatial reference systems.

On Windows:

java -cp <path to gt-jdbc-hana.jar>;<path to ngdbc.jar> \
  org.geotools.data.hana.metadata.MetadataImport \
  <username> <host> <instance> [<dbname>]

On Linux and Mac:

java -cp <path to gt-jdbc-hana.jar>:<path to ngdbc.jar> \
  org.geotools.data.hana.metadata.MetadataImport \
  <username> <host> <instance> [<dbname>]