com.telekom.m2m.cot.restsdk.event.EventCollection Maven / Gradle / Ivy
/**
*
*/
package com.telekom.m2m.cot.restsdk.event;
import com.google.gson.Gson;
import com.google.gson.JsonArray;
import com.google.gson.JsonElement;
import com.telekom.m2m.cot.restsdk.CloudOfThingsRestClient;
import com.telekom.m2m.cot.restsdk.util.ExtensibleObject;
import com.telekom.m2m.cot.restsdk.util.Filter;
import com.telekom.m2m.cot.restsdk.util.JsonArrayPagination;
/**
* @author chuhlich
*
*/
public class EventCollection extends JsonArrayPagination {
private static final String COLLECTION_CONTENT_TYPE = "application/vnd.com.nsn.cumulocity.eventCollection+json;charset=UTF-8;ver=0.9";
private static final String COLLECTION_ELEMENT_NAME = "events";
/**
* Creates an EventCollection.
* Use {@link EventApi} to get EventCollection.
*
* @param cloudOfThingsRestClient the necessary REST client to send requests to the CoT.
* @param relativeApiUrl relative url of the REST API without leading slash.
* @param gson the necessary json De-/serializer.
* @param filterBuilder the build criteria or null if all items should be retrieved.
*/
EventCollection(final CloudOfThingsRestClient cloudOfThingsRestClient,
final String relativeApiUrl,
final Gson gson,
final Filter.FilterBuilder filterBuilder) {
super(cloudOfThingsRestClient, relativeApiUrl, gson, COLLECTION_CONTENT_TYPE, COLLECTION_ELEMENT_NAME, filterBuilder);
}
/**
* Retrieves the current page.
*
* Retrieves the Events influenced by filters set in construction.
*
* @return array of found Events
*/
public Event[] getEvents() {
final JsonArray jsonEvents = getJsonArray();
if (jsonEvents != null) {
final Event[] arrayOfEvents = new Event[jsonEvents.size()];
for (int i = 0; i < jsonEvents.size(); i++) {
JsonElement jsonEvent = jsonEvents.get(i).getAsJsonObject();
final Event event = new Event(gson.fromJson(jsonEvent, ExtensibleObject.class));
arrayOfEvents[i] = event;
}
return arrayOfEvents;
} else {
return new Event[0];
}
}
}