Get the clear idea about the linked data; come up with suggestions.

Hey,

it would be useful to get the phenomenons unit (Km/h, dB, Km, etc.).

Greetings,
Dennis

The first testdrive shows that the create_measurement item makes the activity stream basically useless.
It would make sense to either aggregate them:
e.g.: userX created 512 new measurements

Or delete them completely and only show the track creation.

I want to subscribe to the event stream of car-borne sensor data as to work with these near real-time data

It would be nice to include user avatars into a user account.
Based on the API Docu, it is currently not possible to change name or password of a user. I guess at least changeable passwords would be nice.

Rename packages, artifacts and move the repo.

Embed sensor and phenomenons in tracks/measurements instead of referencing them to allow faster response times.

Currently sensors and phenomenons are read only and it should be safe to embed and never touch them again.

I want to query the service to find specific sensors

Either in Mongo or in Java (Mongo would be the better choice as other service instances would profit from it).

Use of the following together with some kind of "force reload" query parameter.

• Make Statistic a interface implemented in Mongo package
• Save created statistics in a new collection and check for their existence before creation
  • http://docs.mongodb.org/manual/tutorial/expire-data/
  • http://docs.mongodb.org/manual/core/capped-collections/

Is it possible that your method to delete users doesn't work anymore?
I don't get a server response while performing a delete request anymore (the same method works for deleting friends, though)

I want to query the service to find specific phenomenons

I want to query the service to find specific measurements

Implement the following endpoints

POST /rest/users/:username/tracks
GET /rest/users/:username/tracks/:track
POST /rest/users/:username/tracks/:track/measurements
GET /rest/users/:username/tracks/:track/measurements
GET /rest/users/:username/tracks/:track/measurements/:measurement
GET /rest/users/:username/measurements
GET /rest/users/:username/measurements/:measurement

Remove friend has a invalid rest endpoint at DELETE /rest/users/:user/friends with a entity reference to the removed friend.

DELETE /rest/users/:user/friends/:friend would be the right choice. Currently DELETE /rest/users/:user/friends/:friend would entirely delete the user friend. Solution would be to create a new FriendResource that extends UserResource and overrides the DELETE operation.

Also there currently isn't any check whether the current user is authorized to do so.

Context:

• FriendsResource

Deleting groups seems to result in a server error

Which additional fields should we add to users?

• First Name (String)
• Last Name (String)
• Country (String)
• Location (String or Geometry?)
• About Me (String)
• URL (URI)
• Date of birth (Date)
• Gender (String (enum))
• Language (Locale (de_DE, en_EN, de-DE, en-EN, etc.)

@dwilhelm89 any other suggestions?

Please add at least a limit operator to limit the returned tracks (and a page parameter)
for example

GET /rest/tracks?limit=10

gives the first 10 tracks

GET /rest/tracks?limit=10&page=2

gives the next 10 tracks

Thanks :)

I want to query the service to find specific users

Please change the Tracks so that the features look like the following.

This would eliminate the need to iterate through the phenomenons array in order to find for example the value for a phenomenon.

Cheers

{
    "features": [
        {
            "type": "Feature",
            "geometry": {
                "type": "Point",
                "coordinates": [
                    12.365,
                    24.068
                ]
            },
            "properties": {
                "id": "51944e3ae4b017df94de8f73",
                "time": "2013-05-16T04:13:27+02:00",
                "sensor": {
                    "name": "testsensor1",
                    "created": "2013-05-16T05:00:17+02:00",
                    "modified": "2013-05-16T05:00:17+02:00"
                },
                "user": {
                    "name": "testuser1",
                    "mail": "[email protected]",
                    "created": "2013-05-16T04:58:30+02:00",
                    "modified": "2013-05-16T04:58:30+02:00"
                },
                "modified": "2013-05-16T05:10:50+02:00",
                "created": "2013-05-16T05:10:50+02:00",
                "phenomenons": {
                    "co2": {
                        "created": "2013-05-16T05:00:22+02:00",
                        "modified": "2013-05-16T05:00:22+02:00",
                        "value": 21.688
                    }
                }
            }
        }
    ]
}

Somewhat in the server is eating up memory.
USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
tomcat6 20 0 6237m 3.4g 6600 S 0 88.6 16:02.11 java

So we are at 3.4 GB RAM use.

Java can't evene allocate new memory: Jenkins builds do fail bc of:
java.io.IOException: Cannot run program "git" (in directory "/var/lib/jenkins/jobs/car.io-server-dev/workspace"): java.io.IOException: error=12, Cannot allocate memory

Achievements based on the driving style of the user (type of achievement, date).
A user would be able to see his own achievements as well of those of his friends/groups (website/app).

It's unclear who would assign the achievements. Directly in the app based on the measurements or on the server while receiving the measurements?

Website requests a possibility to register

could you please provide tracks as geojson, or an example how a track does look like when we request it from the server

I want to query the service to find specific groups

use cases:
I want to join groups of users
I want to create and delete groups
I want to see a list of groups of users

It seems like there is a little bug in the groups.

testuser1 is owner of testgroup1 but not a member:
http://giv-car.uni-muenster.de:8080/stable/rest/groups/testgroup1/
http://giv-car.uni-muenster.de:8080/stable/rest/groups/testgroup1/members

In addition to that there is no method to join/leave existing groups yet. Only the creation of groups is possible. Or am I missing something?

User Stories:

• I want to request a specific trip of my data
• I want to check my data

yyyy-MM-dd'T'HH:mm:ssZ

usable with http://docs.oracle.com/javase/1.5.0/docs/api/java/text/SimpleDateFormat.html

if not possible, please provide a suitable pattern.

Thanks :)

Ability to create measurements while creating a track.
Changes:

• parse measurments in track decoder
• save the track without the measurements (they will be embedded if their ID does not exist in the database)
• save the measurements
• save the track with measurments

http://giv-car.uni-muenster.de:8080/stable/rest/users

Gives me a 500:
java.lang.RuntimeException: com.github.jmkgreen.morphia.mapping.MappingException: Some of the references could not be fetched for io.car.server.mongo.entity.MongoUser.friends.

They currently return statistics for every measurement instead of aggregating them…

Also validate responses…

Could you insert the name and the date of a track within the track overview in:

• rest/tracks
• rest/users/:username/tracks

This would make creating route overview way more easy.

I want to query the service to find specific tracks

Create seperated decoder/encoder classes to keep singleton providers while allowing encoders to access per-request scoped objects (especially UriInfo).

I asked for ssl-certificates. I'll tell you when they arrive.

Upon attempting to create an user with an email address alreay in use in the system, the server returns 500 Server Error.

I think this should be 409 :)

Could you invert the list of tracks, too?
I guess it would be important to see the newest track first.

If a users is deleted all references should be deleted. This includes Tracks, Friends, Groups and Measurements… Encoders should be checked if they can handle entities without a user.

E.g. for friends:

    db.users.update(
        { 
            friends:{ 
                $elemMatch: DBRef("users", ObjectId("5194c318e4b0f6e19ad24acc")) 
            } 
        },
        { 
            $pull : { 
                friends: DBRef("users", ObjectId("5194c318e4b0f6e19ad24acc")) 
            } 
        },
        { 
            multiple: true 
        }
    );

I want to subscribe to the event stream of car-borne sensor data, I want to use certain filters and processes to get a certain view on the data

(depends on #15)