Using the Cassandra DataStore Programmatically ============================================== Creating a Data Store --------------------- An instance of a Cassandra data store can be obtained through the normal GeoTools discovery methods, assuming that the GeoMesa code is on the classpath. .. code-block:: java Map parameters = new HashMap<>(); parameters.put("cassandra.contact.point", "127.0.0.1:9142"); parameters.put("cassandra.keyspace", "geomesa"); parameters.put("cassandra.catalog", "mycatalog"); org.geotools.data.DataStore dataStore = org.geotools.data.DataStoreFinder.getDataStore(parameters); .. _cassandra_parameters: Cassandra Data Store Parameters ------------------------------- The data store takes several parameters (required parameters are marked with ``*``): ==================================== ======= ======================================================================================== Parameter Type Description ==================================== ======= ======================================================================================== ``cassandra.catalog *`` String The name of the GeoMesa catalog table (previously ``geomesa.cassandra.catalog.table``) ``cassandra.contact.point *`` String The connection point for Cassandra, in the form ``:`` - for a default local installation this will be ``localhost:9042`` ``cassandra.keyspace *`` String The Cassandra keyspace to use (must exist already) ``cassandra.username`` String Cassandra user ``cassandra.password`` String Cassandra password ``geomesa.query.audit`` Boolean Audit queries being run. Queries will be written to a log file ``geomesa.query.timeout`` String The max time a query will be allowed to run before being killed. The timeout is specified as a duration, e.g. ``1 minute`` or ``60 seconds`` ``geomesa.query.threads`` Integer The number of threads to use per query ``geomesa.query.loose-bounding-box`` Boolean Use loose bounding boxes - queries will be faster but may return extraneous results ``geomesa.stats.generate`` Boolean Toggle collection of statistics (currently not implemented) ``geomesa.query.caching`` Boolean Toggle caching of results ==================================== ======= ======================================================================================== More information on using GeoTools can be found in the `GeoTools user guide `__.