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Exchange Web Services (EWS) Java API
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/*
* The MIT License
* Copyright (c) 2012 Microsoft Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package microsoft.exchange.webservices.data.core.request;
import microsoft.exchange.webservices.data.core.ExchangeService;
import microsoft.exchange.webservices.data.core.enumeration.misc.TraceFlags;
import microsoft.exchange.webservices.data.core.exception.service.remote.ServiceRequestException;
import microsoft.exchange.webservices.data.misc.AsyncCallback;
import microsoft.exchange.webservices.data.misc.AsyncExecutor;
import microsoft.exchange.webservices.data.misc.AsyncRequestResult;
import microsoft.exchange.webservices.data.misc.CallableMethod;
import microsoft.exchange.webservices.data.misc.IAsyncResult;
import java.io.IOException;
import java.util.concurrent.Callable;
import java.util.concurrent.Future;
/**
* Defines the SimpleServiceRequestBase class.
*/
public abstract class SimpleServiceRequestBase extends ServiceRequestBase {
/**
* Initializes a new instance of the SimpleServiceRequestBase class.
*/
protected SimpleServiceRequestBase(ExchangeService service)
throws Exception {
super(service);
}
/**
* Executes this request.
*
* @return response object
* @throws Exception on error
*/
protected T internalExecute() throws Exception {
HttpWebRequest response = null;
try {
response = this.validateAndEmitRequest();
return this.readResponse(response);
} catch (IOException ex) {
// Wrap exception.
throw new ServiceRequestException(String.
format("The request failed. %s", ex.getMessage()), ex);
} catch (Exception e) {
if (response != null) {
this.getService().processHttpResponseHeaders(TraceFlags.
EwsResponseHttpHeaders, response);
}
throw new ServiceRequestException(String.format("The request failed. %s", e.getMessage()), e);
}
}
/**
* Ends executing this async request.
*
* @param asyncResult The async result
* @return Service response object
* @throws Exception on error
*/
protected T endInternalExecute(IAsyncResult asyncResult) throws Exception {
HttpWebRequest response = (HttpWebRequest) asyncResult.get();
return this.readResponse(response);
}
/**
* Begins executing this async request.
*
* @param callback The AsyncCallback delegate.
* @return An IAsyncResult that references the asynchronous request.
* @throws Exception on error
*/
public AsyncRequestResult beginExecute(AsyncCallback callback) throws Exception {
this.validate();
HttpWebRequest request = this.buildEwsHttpWebRequest();
AsyncExecutor es = new AsyncExecutor();
Callable cl = new CallableMethod(request);
Future task = es.submit(cl, callback);
es.shutdown();
return new AsyncRequestResult(this, request, task, null);
}
}