I am trying to figure out what is the best practice to use Mapbox on Android with tiles stored in a server.
I know the tiles are available because I can make them appear on the web.
I can use the default styles no problem mapBox.setStyle(Style.LIGHT) but when I try to change the map style using the server tiles.
I'm creating a JsonObject:
val mapJSONObject = JsonObject()
which is the equivalent of this:
{
"version": 8,
"sources": {
"tiles-name": {
"type": "raster",
"url": "https://myserver.com/map/c16c1u38213f0db8001b1c6e8cee5f7a/{z}/{x}/{y}?token=jfsdajfdsjkfjksh34232fsd",
"tileSize": 256
}
},
"layers": [{
"id": "ee-raster",
"type": "raster",
"source": "tiles-name",
"minzoom": 0,
"maxzoom": 22
}]
}
I've tried to use this JsonObject by either calling it by:
map.setStyle(Style.Builder().fromJson(mapJSONObject.toString()))
or by creating a .json file via this function:
#Throws(IOException::class)
fun save(context: Context, jsonString: String) {
val rootFolder = context.getExternalFilesDir(null)
val jsonFile = File(rootFolder, "file.json")
val writer = FileWriter(jsonFile)
writer.write(jsonString)
writer.close()
}
then using that .json file via:
map.setStyle(Style.Builder().fromJson("file.json"))
When triggering the change map using:
map.setStyle(Style.Builder().fromJson(mapJSONObject.toString()))
I get the error message:
D/Mbgl-HttpRequest: [HTTP] Request with response = 404: No additional
information
[Style]: Failed to load source tiles-name: HTTP status code 404
When triggering the change map using:
map.setStyle(Style.Builder().fromJson("file.json"))
I get the error message:
[ParseStyle]: Failed to parse style: Invalid value. at offset 1
I have trouble debugging this, even though the error messages seem clear enough.
I have been reading through the MapBox documentation, but can't seem to find a clear example using tiles from tiles on a server.
Can anyone identify what might be the issue or point me to an example using this method?
Doesn't have to be in Kotlin, Java would be equally useful.
Related
Im writing a flask app using boilerpipe to extract content.Initially i wrote the boilerpipe extract as script to extract website content but when i try to integrate with my api JVM crashes when executing boilerpipe extractor . This is the error i get https://github.com/misja/python-boilerpipe/issues/17
i have also raised a issue in github
from boilerpipe.extract import Extractor
import unicodedata
class ExtractingContent:
#classmethod
def processingContent(self,sourceUrl,extractorType="DefaultExtractor"):
extractor = Extractor(extractor=extractorType, url=sourceUrl)
extractedText = extractor.getText()
if extractedText:
toNormalString = unicodedata.normalize('NFKD',extractedText).encode('ascii','ignore')
json_data = json.loads({"content": toNormalString, "url": sourceUrl , "status": "success", "publisher_id": "XXXXX", "content_count": str(len(toNormalString)) })
return json_data
else:
json_data = json.dumps({"response": {"message": "No data found", "url": sourceUrl , "status": "success", "content_count": "empty" }})
return json.loads(json_data)
This is the above script im trying to integrate in Flask api which use flask-restful,sqlachemy,psql . I also updated my java but that didn't fix the issue.Java version
java version "1.7.0_45"
javac 1.7.0_45
Any help would be appreciated
Thanks
(copy of what I wrote in https://github.com/misja/python-boilerpipe/issues/17)
OK, I've reproduced the bug : the thread that calls the JVM is not attached to it, therefore the calls to JVM internals fail.
The bug comes from boilerpipe (see below).
First, monkey patching : in the code you posted on stackoverflow, you just have to add the following code before the creation of the extractor :
class ExtractingContent:
#classmethod
def processingContent(self,sourceUrl,extractorType="DefaultExtractor"):
print "State=", jpype.isThreadAttachedToJVM()
if not jpype.isThreadAttachedToJVM():
print "Needs to attach..."
jpype.attachThreadToJVM()
print "Check Attached=", jpype.isThreadAttachedToJVM()
extractor = Extractor(extractor=extractorType, url=sourceUrl)
About boilerpipe: the check if threading.activeCount() > 1 in boilerpipe/extractor/__init__.py, line 50, is wrong.
The calling thread must always be attached to the JVM, even if there is only one.
I am using goggle's search api to get topics id which is used to get JSON response from topic api.The returned response looks like this
{
"id":"/m/01d5g",
"property":{
"/amusement_parks/ride_theme/rides":{...},
"/award/ranked_item/appears_in_ranked_lists":{...},
"/book/book_character/appears_in_book":{
"valuetype":"object",
"values":[
{
"text":"Inferno",
"lang":"en",
"id":"/m/0g5qs3",
"creator":"/user/duck1123",
"timestamp":"2010-02-11T04:00:59.000Z"
},
{
"text":"Batman: Year One",
"lang":"en",
"id":"/m/0hzz_1h",
"creator":"/user/anasay",
"timestamp":"2012-01-25T11:05:03.000Z"
},
{
"text":"Batman: The Dark Knight Returns",
"lang":"en",
"id":"/m/0hzz_sb",
"creator":"/user/anasay",
"timestamp":"2012-01-25T11:22:17.001Z"
},
{
"text":"Batman: Son of the Demon",
"lang":"en",
"id":"/m/071l77",
"creator":"/user/wikimapper",
"timestamp":"2013-07-11T15:20:32.000Z"
},
{
"text":"Joker",
"lang":"en",
"id":"/m/04zxvhs",
"creator":"/user/wikimapper",
"timestamp":"2013-07-11T16:58:37.000Z"
},
{
"text":"Arkham Asylum: A Serious House on Serious Earth",
"lang":"en",
"id":"/m/0b7hyw",
"creator":"/user/wikimapper",
"timestamp":"2013-07-11T19:26:54.000Z"
}
],
"count":6.0
},
"/book/book_subject/works":{...},
"/comic_books/comic_book_character/cover_appearances":{...},
...
}
}
I want to decipher this so that i can get relevant information such as, "/book/book_character/appears_in_book" itself is a property for response and only required value that i want from it is "text" and "id" e.g. "text":"Batman: Year One" and "id":"/m/0hzz_1h".
Since the response does not have fixed properties, and which may varying according to response id. how can i covert this JSON response in java Class where i can store "/book/book_character/appears_in_book" as one serialized class and containing Collection of values such has id and text and appears_in_book as name variables for class.
I considered GSON to do this. since name of property is not constant i can not use it to covert JSON to Java Object. currently i am iterating over each property by hard coding and filling them in java variables.
If some one can provide efficient way to do so i will appreciate help.
You could do this dynamically using reflection in Java but this is an advanced feature of Java and it may make your code more complicated than it needs to be.
See: Dynamically create an object in java from a class name and set class fields by using a List with data
A simpler alternative would be to just parse the JSON into a bunch of nested Maps and Lists exactly as they're given in the JSON data.
See: How to parse JSON in Java
I m new to RESTful Webservices in iOS and in Java. I read really a lot but i dont get definitiv answer how to SEND & RECEIVE a POST request in iOS & Handle that in Java.
My Situation is this:
I want to create a user on serverside. On Clientside i got for that 3 Objects that saves information (User, Usersdevice & Usersmembership). I read a lot about Objectmapping but I cant relate it with a practical example.
Seconde one is how to handle that POST on serverside with Java(Jersey) as RE.
Iknow that are two qeustions but I really need to know that.
I strongly recommend you to post a snippet of your code and clarify which restkit version uses. seems a bit outdated.
Also read the newest Object Mapping guide in order to leverage RestKit taking care if you want the KVC mapping or not. It could be tricky!!!
https://github.com/RestKit/RestKit/wiki/Object-mapping
First of all you have to determine your base URL:
RKObjectManager* manager = [RKObjectManager managerWithBaseURL:[NSURL URLWithString:#"http://www.yourURL.com]];
A method to download articles using RK object mapping:
- (void)loadArticles{
RKObjectMapping* articleMapping = [RKObjectMapping mappingForClass:[Article class]];
[articleMapping addAttributeMappingsFromDictionary:#{
#"title": #"title",
#"body": #"body",
#"author": #"author",
#"publication_date": #"publicationDate"
}];
RKResponseDescriptor *responseDescriptor = [RKResponseDescriptor responseDescriptorWithMapping:articleMapping pathPattern:nil keyPath:#"articles" statusCodes:RKStatusCodeIndexSetForClass(RKStatusCodeClassSuccessful)];
NSString * stringURL = #"/articles/";
[RKObjectManager.sharedManager getObjectsAtPath:stringURL parameters:nil success:^(RKObjectRequestOperation *operation, RKMappingResult *mappingResult){
RKLogInfo(#"Load collection of Articles: %#", mappingResult.array);
} failure:^(RKObjectRequestOperation *operation, NSError *error) {
RKLogError(#"Operation failed with error: %#", error);
}];
[objectRequestOperation start];
}
In order to map this JSON
{ "articles": [
{ "title": "RestKit Object Mapping Intro",
"body": "This article details how to use RestKit object mapping...",
"author": "Blake Watters",
"publication_date": "7/4/2011"
},
{ "title": "RestKit 1.0 Released",
"body": "RestKit 1.0 has been released to much fanfare across the galaxy...",
"author": "Blake Watters",
"publication_date": "9/4/2011"
}]
}
I am trying to create using the Java API a new river between MongoDB and ElasticSearch. Using the REST API is pretty easy making a PUT request with the following JSON
{
"type": "mongodb",
"mongodb": {
"servers": [
{ "host": "127.0.0.1", "port": 27017 }
],
"options": { "secondary_read_preference": true },
"db": "test",
"collection": "collectionTest"
},
"index": {
"name": "testIndex",
"type": "default"
}
}
But I am having several problems with the Java API. I am trying to use the CreateIndexRequestBuilder class but I don't know how to specify the params.
Are they custom params? What about source? I'm pretty lost...
Thank you in advance!
You need to add a document with id _meta to the _river index. The type is the name that you want to give to your index. The document to send is a json containing the configuration needed for your river. Beyond the custom configuration that depends on the river, the json document needs to contain the property type, which contains the name used within the river itself to register the RiverModule. For the mongodb river it's mongodb. The json that you posted is exactly the source that you have to send.
Here is the code that you need:
client.index(Requests.indexRequest("_river").type("my_river").id("_meta").source(source)).actionGet();
How can i parse the exported bookmarks file from Google Chrome and Mozilla Firefox in Java.Is there any libraries available to parse them directly and obtain the URLS in them.
Also sample codes for parsing them in Java are most welcomed .
In most cases, you don't really need to parse the HTML file. Chrome stores its bookmarks in a JSON file. It's a lot simpler to just read that file using a JSON parser.
The file you are interested in is located at (on Linux, anyway, Google around for other O/S):
/home/your_name/.config/google-chrome/Default/Bookmarks
JSON parsing is easy. Google around or start with How to parse JSON in Java.
If you want to visualize JSON data before you start digging through it, then also have a look at http://chris.photobooks.com/json/default.htm.
Per new comments posted , the solution would be to use JSOUP Open Source Program to do this.
JSOUP accepts only HTTP or HTTPS protocols so you might want to host the exported bookmark HTML on a Local Server like tomcat and obtain the DOM of it
http://yourip:<port>/<yourProject>/<bookmark.html>.
JSOUP is pretty self-explanatory.
Other simpler ways :
Chrome and Firefox bookmarks are stored as JSON like below.
Java way : I would suggest you use JSON to parse these. Make a reference Java Object based on the below structure.
or simply use UNIX Command prompt and do a
grep -i "url" <bookmark file path> | cut -d":" -f2
However if you still interested to do with Chrome APIs then please visit : http://developer.chrome.com/extensions/bookmarks.html
{
"checksum": "702d8e600a3d70beccfc78e82ca7caba",
"roots": {
"bookmark_bar": {
"children": [ {
"date_added": "12939920104154671",
"id": "3",
"name": "Development/Tutorials/Git/git-svn - KDE TechBase",
"type": "url",
"url": "http://techbase.kde.org/Development/Tutorials/Git/git-svn"
}, {
"date_added": "12939995405838705",
"id": "4",
"name": "QJson - Usage",
"type": "url",
"url": "http://qjson.sourceforge.net/usage.html"
I am a bit late to this question. But if it is still relevant: I needed to do the same (and also other bookmark sources: GitHub Stars, Netscape and Google Bookmarks as well) and build my own. You can look and take it from my repo: https://github.com/IvoLimmen/mystart.
If somebody is interested: Here's a scala snippet of how you could tackle parsing Chrome's bookmarks JSON file (not thoroughly tested though, just to get the idea):
import org.json4s.DefaultFormats
import org.json4s.native.JsonMethods
import org.junit.Test
class BookmarksImporterTest {
implicit val formats: DefaultFormats.type = DefaultFormats
def analyse(element: Node): List[Node] = {
element.children.flatMap(c => {
c.`type` match {
case Some("folder") => c.children.flatMap(r => analyse(r))
case Some("url") => List(c)
case _ => println("???"); List()
}
})
}
#Test
def test(): Unit = {
val source = scala.io.Source.fromFile("bookmarks.json")
val json = JsonMethods.parse(source.reader())
val bookmarks = json.extract[ChromeBookmarks]
val bms = bookmarks.roots.flatMap {
case (name, elements) => analyse(elements)
}
println("found " + bms.size + " entries")
}
}
case class ChromeBookmarks(checksum: String, roots: Map[String, Node], version: Int)
case class Node(
id: Option[String],
name: Option[String],
url: Option[String],
children: List[Node],
`date-added`: Option[Long],
`date-modified`: Option[Long],
`type`: Option[String]
)