org.transitime.worldbank.gtfsRtExample

Class DataFetcher

java.lang.Object

org.transitime.worldbank.gtfsRtExample.DataFetcher

public class DataFetcher
extends java.lang.Object

For retrieving ApiVehicle from the database

Constructor Summary

Constructors

Constructor and Description
DataFetcher()

Method Summary

Modifier and Type	Method and Description
static java.util.List<VehicleData>	createTestData() Create test ApiVehicle without accessing database
static java.util.List<VehicleData>	queryDatabase() Gets a database connection, queries the database for the GPS data, and puts the resulting data into a List of ApiVehicle objects.
static java.util.List<VehicleData>	queryDatabaseFilteringDuplicates() Gets the ApiVehicle from the database but only returns the last record for each vehicle.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

DataFetcher

public DataFetcher()

Method Detail

queryDatabase

public static java.util.List<VehicleData> queryDatabase()

Gets a database connection, queries the database for the GPS data, and puts the resulting data into a List of ApiVehicle objects.

Returns:

List of ApiVehicle read from database

queryDatabaseFilteringDuplicates

public static java.util.List<VehicleData> queryDatabaseFilteringDuplicates()

Gets the ApiVehicle from the database but only returns the last record for each vehicle. This is useful for when doing polling because then don't want or need multiple GPS reports for a vehicle. Only the most recent one is actually useful.

Returns:

List of ApiVehicle, with only one entry per vehicle

createTestData

public static java.util.List<VehicleData> createTestData()

Create test ApiVehicle without accessing database

Returns: