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Chapter 42. Geocoder

Geocoder Component

Available as of Camel 2.12
The geocoder: component is used for looking up geocodes (latitude and longitude) for a given address, or reverse lookup. The component uses the Java API for Google Geocoder library.
Maven users will need to add the following dependency to their pom.xml for this component: 
<dependency>
    <groupId>org.apache.camel</groupId>
    <artifactId>camel-geocoder</artifactId>
    <version>x.x.x</version>
    <!-- use the same version as your Camel core version -->
</dependency>

URI format

geocoder:address:name[?options]
geocoder:latlng:latitude,longitude[?options]

Options

Property Default Description
language en The language to use.
headersOnly false Whether to only enrich the Exchange with headers, and leave the body as-is.
clientId To use google premium with this client id
clientKey To use google premium with this client key
You can append query options to the URI in the following format, ?option=value&option=value&...

Exchange data format

Camel will deliver the body as a com.google.code.geocoder.model.GeocodeResponse type. And if the address is "current" then the response is a String type with a JSON representation of the current location.
If the option headersOnly is set to true then the message body is left as-is, and only headers will be added to the Exchange.

Message Headers

Header Description
CamelGeoCoderStatus Mandatory. Status code from the geocoder library. If status is GeocoderStatus.OK then additional headers is enriched
CamelGeoCoderAddress The formatted address
CamelGeoCoderLat The latitude of the location.
CamelGeoCoderLng The longitude of the location.
CamelGeoCoderLatlng The latitude and longitude of the location. Separated by comma.
CamelGeoCoderCity The city long name.
CamelGeoCoderRegionCode The region code.
CamelGeoCoderRegionName The region name.
CamelGeoCoderCountryLong The country long name.
CamelGeoCoderCountryShort The country short name.
Notice not all headers may be provided depending on available data and mode in use (address vs latlng).

Samples

In the example below we get the latitude and longitude for Paris, France 
  from("direct:start")
    .to("geocoder:address:Paris, France")
If you provide a header with the CamelGeoCoderAddress then that overrides the endpoint configuration, so to get the location of Copenhagen, Denmark we can send a message with a headers as shown: 
template.sendBodyAndHeader("direct:start", "Hello", GeoCoderConstants.ADDRESS, "Copenhagen, Denmark");
To get the address for a latitude and longitude we can do: 
  from("direct:start")
    .to("geocoder:latlng:40.714224,-73.961452")
    .log("Location ${header.CamelGeocoderAddress} is at lat/lng: ${header.CamelGeocoderLatlng} and in country ${header.CamelGeoCoderCountryShort}")
Which will log 
Location 285 Bedford Avenue, Brooklyn, NY 11211, USA is at lat/lng: 40.71412890,-73.96140740 and in country US
To get the current location you can use "current" as the address as shown: 
  from("direct:start")
    .to("geocoder:address:current")