CODEWITHSUNDEEP
javapaginationrestlet
Micho Rizo
Micho Rizo

Reputation: 1092

restlet pagination HttpClientHelper start/stop

I start off with an initial URI GET request. I get back result along with a link to the next batch of records. I loop thru this until I retrieve all the records. It just seems performance is taking a hit as the logger shows the HttpClientHelper start and stopping after each request. Is this avoidable?

Client client = new Client(new Context(), Protocol.HTTP);
ClientResource clientResource;
JsonRepresentation rep;
JSONObject object;
while(nextURI !=null)
{
    clientResource = new ClientResource(nextURI);

    //excessive HttpClientHelper start/stop triggered at next line
    rep = new JsonRepresentation(service.get(MediaType.APPLICATION_JSON));

    clientResource.setNext(client);
    .
    .
    .
}

Logger shows the following:

May 13, 2015 9:30:52 AM org.restlet.ext.net.HttpClientHelper start

INFO: Starting the HTTP client May 13, 2015 9:30:53 AM org.restlet.ext.net.HttpClientHelper start

INFO: Starting the HTTP client May 13, 2015 9:30:53 AM org.restlet.ext.net.HttpClientHelper start

INFO: Starting the HTTP client May 13, 2015 9:30:53 AM org.restlet.ext.net.HttpClientHelper stop

INFO: Stopping the HTTP client May 13, 2015 9:30:53 AM org.restlet.ext.net.HttpClientHelper stop

INFO: Stopping the HTTP client

Upvotes: 2

Views: 341

Answers (1)

Thierry Templier
Thierry Templier

Reputation: 202146

I think that you call the method setNext too late. You need to call it before any HTTP call and right after having created your instance of ClientResource to prevent from the client connector to be started at each call.

You can find a sample below:

Client client = new Client(new Context(), Protocol.HTTP);

for (int i = 0; i < 5; i++) {
    ClientResource clientResource = new ClientResource("http://...");
    clientResource.setNext(client);

    Representation representation = clientResource.get();
    (...)
}

In this case, the client connector is only started once.

Hope it helps you, Thierry

Upvotes: 1

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