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Issue creating stream definitions via rest interface


Issue creating stream definitions via rest interface

By : MITHILESH PARAB
Date : November 22 2020, 02:59 PM
I wish this help you I just ran (a slightly modified version of) your code and had no problems...
code :
HttpEntity<MultiValueMap<String, String>> requestEntity;
ResponseEntity<String> responseEntity;

RestTemplate restTemplate = new RestTemplate();
HttpHeaders headers = new HttpHeaders();
headers.setContentType(MediaType.APPLICATION_FORM_URLENCODED);

MultiValueMap<String, String> map = new LinkedMultiValueMap<String, String>();
map.add("name", "testStream");
map.add("definition", "time | log");
map.add("deploy", "true");

requestEntity = new HttpEntity<MultiValueMap<String, String>>(map, headers);

String url = "http://localhost:9393/streams/definitions";

try
{
    responseEntity = restTemplate.exchange(url, HttpMethod.POST, requestEntity, String.class);
    String body = responseEntity.getBody();
    HttpStatus statusCode = responseEntity.getStatusCode();
}
catch (Exception e)
{
    e.printStackTrace();
}


2015-11-23T13:00:44-0500 1.3.0.RELEASE INFO task-scheduler-1 sink.testStream - 2015-11-23 13:00:44
2015-11-23T13:00:45-0500 1.3.0.RELEASE INFO task-scheduler-1 sink.testStream - 2015-11-23 13:00:45
2015-11-23T13:00:46-0500 1.3.0.RELEASE INFO task-scheduler-1 sink.testStream - 2015-11-23 13:00:46
2015-11-23T13:00:47-0500 1.3.0.RELEASE INFO task-scheduler-1 sink.testStream - 2015-11-23 13:00:47


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Is it ok to return application/octet-stream from a REST interface?

Is it ok to return application/octet-stream from a REST interface?


By : James Saxton
Date : March 29 2020, 07:55 AM
it should still fix some issue It is not so good, as the client will not know what to do with such binary data except of storing those bytes somewhere or sending them further to some other process (if this is all you need to do with your data, then it is fine).
You may take a look at multipart content types. IMO, a multipart message containing several image/gif parts would be a better alternative.
Are Flex / AS3 metadata tags handled differently at interface definitions than at class definitions?

Are Flex / AS3 metadata tags handled differently at interface definitions than at class definitions?


By : user1535170
Date : March 29 2020, 07:55 AM
I wish this helpful for you You can define [Event] metadata in interfaces for informational purposes, but unlike functions, you cannot enforce that implementations use those events. In my experience, you must re-define the events in the implementation classes.
Can derived C# interface definitions 'override' function definitions?

Can derived C# interface definitions 'override' function definitions?


By : user3654389
Date : March 29 2020, 07:55 AM
I think the issue was by ths following , I am defining a geenral API which will have a number of more specific derivations and want to know if C# interfaces are powerful enough to model this, and if so how, and if not how else I might model this. , This is what you want:
code :
abstract class AuthenticationToken
{
}

interface IAthentication<T> where T : AuthenticationToken
{
    bool Authenticate(string name, T token);
}

class DoorKey : AuthenticationToken
{
}

interface IDoorAthentication : IAthentication<DoorKey>
{
}

class DoorUnlocker : IDoorAthentication
{
    public bool Authenticate(string name, DoorKey token)
    {
    }
}
Issue with java 8 stream's Collector interface

Issue with java 8 stream's Collector interface


By : user3261104
Date : March 29 2020, 07:55 AM
Any of those help If I understand your question correctly, you want to treat the messages uniformly by using the receiver as key for sent messages and using the sender as key for received messages. You could do this by using a conditional in the collect operation:
code :
Map<Member, List<Message>> map = Stream.concat(
  currentMember.getSentMessages().stream(), currentMember.getReceivedMessages().stream())
.collect(Collectors.groupingBy(msg ->
                   msg.getSender()==currentMember? msg.getRecipient(): msg.getSender()));
Map<Member, List<Message>> map =
  Stream.concat(
      currentMember.getSentMessages().stream().map(msg ->
          new AbstractMap.SimpleImmutableEntry<>(msg.getRecipient(), msg)),
      currentMember.getReceivedMessages().stream().map(msg ->
          new AbstractMap.SimpleImmutableEntry<>(msg.getSender(), msg)))
  .collect(Collectors.groupingBy(e -> e.getKey(),
               Collectors.mapping(e->e.getValue(), Collectors.toList())));
Creating a dictionary with multiple definitions for each word with CRUD functionality for both words and definitions

Creating a dictionary with multiple definitions for each word with CRUD functionality for both words and definitions


By : Amjad
Date : October 07 2020, 03:00 AM
I hope this helps you . Using ruby and sinatra, I need a children's learning dictionary where kids can pick words they want to use, be able to add and delete words, and have multiple definitions for each word that , again, they can add, update and delete. , I suggest you write your class as follows.
code :
class Words
  @words = {}
  # @words is a class instance variable, generally a better choice than a class
  # variable because it cannot be seen from subclasses. It is a hash, with keys
  # being words and values being the associated instances of this class.

  singleton_class.public_send(:attr_reader, :words)
  # This creates a read accessor for the class instance variable @words.

  attr_reader :definitions
  # this creates a read accessor for @definitions, which returns an array
  # of one or more definitions that have been given for the word.

  def initialize(word)
    @definitions = []
    self.class.words[word] = self
    # self.class => Words, Word.words is the hash of words and their instances.
    # The key-value pair `word=>self` is being added to that hash.
  end

  def add_definition(definition)
    @definitions << definition
  end

  def self.remove_definition(word)
    words.delete(word)
  end
  # This is a class method used to remove words from the dictionary.

end
word = Words.new("bridle")
  #=> #<Words:0x00005d1850124740 @word="bridle", @definitions=[]> 
word.add_definition "the headgear used to control a horse."
word.add_definition "show one's resentment or anger."
word.definitions
  #=> ["the headgear used to control a horse.",
  #    "show one's resentment or anger."] 
Words.words
  #=> {"bridle"=>#<Words:0x000059addb793410 @definitions=[
  #      "the headgear used to control a horse.",
  #      "show one's resentment or anger."]>}
word = Words.new("cheesy")
  #=> #<Words:0x00005d18501a8dd8 @word="cheesy", @definitions=[]> 
word.add_definition "like cheese in taste, smell, or consistency."
word.add_definition "cheap, unpleasant, or blatantly inauthentic."
word.definitions
  #=> ["like cheese in taste, smell, or consistency.",
  #    "cheap, unpleasant, or blatantly inauthentic."] 
Words.words
  #=> {"bridle"=>#<Words:0x000059addb793410 @definitions=[
  #      "the headgear used to control a horse.",
  #      "show one's resentment or anger."]>,
  #      "cheesy"=>#<Words:0x000059addb527be0 @definitions=[
  #        "like cheese in taste, smell, or consistency.",
  #        "cheap, unpleasant, or blatantly inauthentic."]>} 
Words.words.keys
  #=> ["bridle", "cheesy"]
Words.words["cheesy"].definitions
  #=> ["like cheese in taste, smell, or consistency.",
  #    "cheap, unpleasant, or blatantly inauthentic."]  
Words.remove_definition("bridle")
Words.words
  #=> {"cheesy"=>#<Words:0x000059addb527be0 @definitions=[
  #      "like cheese in taste, smell, or consistency.",
  #      "cheap, unpleasant, or blatantly inauthentic."]>} 
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