com.devexperts.mdd.news.model

Class NewsModel

java.lang.Object

com.devexperts.mdd.news.model.NewsModel

All Implemented Interfaces:

Runnable

public class NewsModel
extends Object
implements Runnable

Model for convenient News management.

Sample usage

The following code will print and update last 5 news from "Business Wire" source:

 NewsModel model = new NewsModel(endpoint);
 model.getNewsList().addListener(new ObservableListModelListener<NewsEvent>() {
     public void modelChanged(Change<? extends NewsEvent> change) {
         for (NewsEvent news : change.getSource())
             System.out.println(news.getSourceId() + ": " + news.getTitle());
     }
 });
 model.setFilter(NewsFilter.newBuilder().withSources("Business Wire").withLimit(5).build());
 model.setLive(true);
 

Threads and locks

Listeners are invoked in the context of the corresponding RMIEndpoint executor and the corresponding notification is guaranteed to never be concurrent, even though it may happen from different threads if executor is multi-threaded.

Constructor Summary

Constructors

Constructor and Description
NewsModel(com.devexperts.rmi.RMIEndpoint endpoint) Creates model with the specified RMI endpoint.

Method Summary

Modifier and Type	Method and Description
NewsFilter	getFilter() Returns currently active news filter.
com.dxfeed.model.ObservableListModel<NewsEvent>	getNewsList() Returns an observable list of news which is updated on news updates.
boolean	isLive() Returns whether news model is "live", i.e.
void	run()
void	setFilter(NewsFilter filter) Sets news filter.
void	setLive(boolean live) Sets news model "live" status of the model.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

NewsModel

public NewsModel(com.devexperts.rmi.RMIEndpoint endpoint)

Creates model with the specified RMI endpoint.

Parameters:

endpoint - RMI endpoint to connect to

Method Detail

getFilter

public NewsFilter getFilter()

Returns currently active news filter.

Returns:

current news filter.

setFilter

public void setFilter(NewsFilter filter)

Sets news filter.

Parameters:

filter - news filter to use

isLive

public boolean isLive()

Returns whether news model is "live", i.e. receives news updates.

Returns:

flag, indicating "live" status of the model.

setLive

public void setLive(boolean live)

Sets news model "live" status of the model. When model is "live" it receives news updates from the news server.

Parameters:

live - flag, indicating "live" status of the model.

getNewsList

public com.dxfeed.model.ObservableListModel<NewsEvent> getNewsList()

Returns an observable list of news which is updated on news updates.

Returns:

ordered list of the latest news.

run

public void run()

Specified by:

run in interface Runnable