/**
* for fetching the data
*
* @throws RequestRepeatException if the request to download the image is already present in the
* queue or is downloading.
* @return object -- returns string
*/
public Object send() throws RequestRepeatException {
if (Util.isInternetAvailable()) {
isRepeatRequest = false;
// checking again if this request is already duplicated for previous one is completed or not.
// if not completed it will be "duplicated" request hence isRepeatRequest will be true.
// else isRepeatRequest will become true.
if (isRepeatRequest) {
// checks for duplicate request completion
setIsRepeatRequest();
}
if (!isRepeatRequest) {
// get downloaded data
Object obj = sendRequest();
// removes this instance from the list to tell the future request that its been completed.
Util.removeHttRequest(this);
return obj;
} else {
throw new RequestRepeatException("Request already in queue");
}
} else {
if (this.METHOD_TYPE != Constants.IMAGE_METHOD) {
Util.showToast("Network not available");
}
return null;
}
}
/** checks for duplicate request. */
private boolean checkForRepeatRequest() {
// getting all the active queues
try {
List<HttpRequest> list = Util.getHttpRequestList();
if (list != null && list.size() > 0) {
int count = list.size();
for (int i = 0; i < count; i++) {
HttpRequest r = list.get(i);
// comparing the two request
if (this.equals(r)) {
list.clear();
list = null;
return true;
}
}
list.clear();
}
list = null;
} catch (Exception e) {
return false;
}
return false;
}
/** checks for the repeat request and adds in the list if not repeated */
private void setIsRepeatRequest() {
// checking for duplicate request
if (!checkForRepeatRequest()) {
isRepeatRequest = false;
// adding this object in the list
Util.addHttRequest(this);
} else {
isRepeatRequest = true;
}
}