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")
