com.conveyal.gtfs.graphql

Class GraphQLGtfsSchema

java.lang.Object

com.conveyal.gtfs.graphql.GraphQLGtfsSchema

public class GraphQLGtfsSchema
extends Object

This defines the types for our GraphQL API, and wires them up to functions that can fetch data from JDBC databases.

Field Summary

Fields

Modifier and Type	Field and Description
static graphql.schema.GraphQLObjectType	agencyType
static graphql.schema.GraphQLObjectType	calendarType
static graphql.schema.GraphQLObjectType	errorCountType GraphQL does not have a type for arbitrary maps (String -> X).
static graphql.schema.GraphQLObjectType	fareRuleType
static graphql.schema.GraphQLObjectType	fareType
static graphql.schema.GraphQLSchema	feedBasedSchema This is the new schema as of July 2017, where all sub-entities are wrapped in a feed.
static graphql.schema.GraphQLObjectType	feedInfoType
static graphql.schema.GraphQLObjectType	feedType The GraphQL API type representing entries in the top-level table listing all the feeds imported into a gtfs-api database, and with sub-fields for each table of GTFS entities within a single feed.
static graphql.schema.GraphQLObjectType	frequencyType
static graphql.schema.GraphQLObjectType	patternStopType Represents each stop in a list of stops within a pattern.
static graphql.schema.GraphQLObjectType	patternType The GraphQL API type representing a unique sequence of stops on a route.
static graphql.schema.GraphQLObjectType	routeType
static graphql.schema.GraphQLObjectType	rowCountsType The GraphQL API type representing counts of rows in the various GTFS tables.
static graphql.schema.GraphQLObjectType	scheduleExceptionType
static graphql.schema.GraphQLObjectType	serviceDurationType Durations that a service runs on each mode of transport (route_type).
static graphql.schema.GraphQLObjectType	serviceType The GraphQL API type representing a service (a service_id attached to trips to say they run on certain days).
static graphql.schema.GraphQLObjectType	shapePointType
static graphql.schema.GraphQLObjectType	stopTimeType
static graphql.schema.GraphQLObjectType	stopType
static graphql.schema.GraphQLObjectType	tripGroupCountType
static graphql.schema.GraphQLObjectType	tripType
static graphql.schema.GraphQLObjectType	validationErrorType The GraphQL API type representing entries in the table of errors encountered while loading or validating a feed.

Constructor Summary

Constructors

Constructor and Description
GraphQLGtfsSchema()

Method Summary

Methods inherited from class java.lang.Object

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

Field Detail

agencyType

public static final graphql.schema.GraphQLObjectType agencyType

calendarType

public static final graphql.schema.GraphQLObjectType calendarType

scheduleExceptionType

public static final graphql.schema.GraphQLObjectType scheduleExceptionType

fareRuleType

public static final graphql.schema.GraphQLObjectType fareRuleType

fareType

public static final graphql.schema.GraphQLObjectType fareType

feedInfoType

public static final graphql.schema.GraphQLObjectType feedInfoType

shapePointType

public static final graphql.schema.GraphQLObjectType shapePointType

frequencyType

public static final graphql.schema.GraphQLObjectType frequencyType

tripType

public static final graphql.schema.GraphQLObjectType tripType

stopTimeType

public static final graphql.schema.GraphQLObjectType stopTimeType

routeType

public static final graphql.schema.GraphQLObjectType routeType

stopType

public static final graphql.schema.GraphQLObjectType stopType

patternStopType

public static final graphql.schema.GraphQLObjectType patternStopType

Represents each stop in a list of stops within a pattern. We could return just a list of StopIDs within the pattern (a JSON array of strings) but that structure would prevent us from joining tables and returning additional stop details like lat and lon, or pickup and dropoff types if we add those to the pattern signature.

validationErrorType

public static graphql.schema.GraphQLObjectType validationErrorType

The GraphQL API type representing entries in the table of errors encountered while loading or validating a feed.

rowCountsType

public static graphql.schema.GraphQLObjectType rowCountsType

The GraphQL API type representing counts of rows in the various GTFS tables. The context here for fetching subfields is the feedType. A special dataFetcher is used to pass that identical context down.

tripGroupCountType

public static graphql.schema.GraphQLObjectType tripGroupCountType

errorCountType

public static graphql.schema.GraphQLObjectType errorCountType

GraphQL does not have a type for arbitrary maps (String -> X). Such maps must be expressed as a list of key-value pairs. This is probably intended to protect us from ourselves (sending untyped data) but it just leads to silly workarounds like this.

patternType

public static final graphql.schema.GraphQLObjectType patternType

The GraphQL API type representing a unique sequence of stops on a route. This is used to group trips together.

serviceDurationType

public static final graphql.schema.GraphQLObjectType serviceDurationType

Durations that a service runs on each mode of transport (route_type).

serviceType

public static graphql.schema.GraphQLObjectType serviceType

The GraphQL API type representing a service (a service_id attached to trips to say they run on certain days).

feedType

public static final graphql.schema.GraphQLObjectType feedType

The GraphQL API type representing entries in the top-level table listing all the feeds imported into a gtfs-api database, and with sub-fields for each table of GTFS entities within a single feed.

feedBasedSchema

public static final graphql.schema.GraphQLSchema feedBasedSchema

This is the new schema as of July 2017, where all sub-entities are wrapped in a feed. Because all of these fields are static (ugh) this must be declared after the feedQuery it references.

Constructor Detail

GraphQLGtfsSchema

public GraphQLGtfsSchema()