private void resetAndValidateRequest(DownloadRequest request) {
// Reset download request
request.setLength(0);
request.setAvailableLength(0);
request.setDownloadStatus(DownloadStatus.None);
// Validate download request
if (request.getDownloadPriority() == DownloadPriority.None) {
throw new IllegalArgumentException("request.DownloadPriority");
}
if (request.getLocale() == null || request.getLocale().length() == 0) {
throw new IllegalArgumentException("request.Locale");
}
if (request.getName() == null || request.getName().length() == 0) {
throw new IllegalArgumentException("request.Name");
}
if (request.getOverridePermittedNetworkTypes() != null
&& request.getOverridePermittedNetworkTypes().contains(NetworkTypes.None)) {
throw new IllegalArgumentException("request.OverridePermittedNetworkTypes");
}
if (request.getUrl() == null || request.getUrl().length() == 0) {
throw new IllegalArgumentException("request.Url");
}
if (request.getFileName() == null || request.getFileName().length() == 0) {
throw new IllegalArgumentException("request.FileName");
}
if (_downloadQueue.getDownloadRequest(request.getUrl()) != null) {
throw new IllegalArgumentException(
"A download request already exists with the specified request's URL.");
}
}
/// <summary>
/// Restarts download of the in-progress or completed item with the specified URL, beginning at
// the specified byte offset.
/// </summary>
/// <param name="url"></param>
/// <param name="byteOffset"></param>
public void restart(String url, long byteOffset) {
// Locals
DownloadRequest downloadRequest;
DownloadInformation downloadInformation;
// Get download information
downloadRequest = _downloadQueue.getDownloadRequest(url);
if (downloadRequest == null) {
downloadInformation = _completedDownloadCatalog.getDownloadInformation(url);
if (downloadInformation == null) {
return;
}
downloadRequest = new DownloadRequest();
downloadRequest.setUrl(downloadInformation.getUrl());
downloadRequest.setName(downloadInformation.getName());
downloadRequest.setLocale(downloadInformation.getLocale());
downloadRequest.setOverrideStorageLocation(downloadInformation.getStorageLocation());
downloadRequest.setDownloadPriority(downloadInformation.getDownloadPriority());
downloadRequest.setOverridePermittedNetworkTypes(
downloadInformation.getPermittedNetworkTypes());
if (byteOffset == OFFSET_ZERO) {
delete(downloadInformation.getUrl());
} else {
downloadRequest.setAvailableLength(byteOffset);
}
} else {
downloadRequest = new DownloadRequest();
downloadRequest.setUrl(downloadRequest.getUrl());
downloadRequest.setName(downloadRequest.getName());
downloadRequest.setLocale(downloadRequest.getLocale());
downloadRequest.setOverrideStorageLocation(downloadRequest.getOverrideStorageLocation());
downloadRequest.setDownloadPriority(downloadRequest.getDownloadPriority());
downloadRequest.setOverridePermittedNetworkTypes(
downloadRequest.getOverridePermittedNetworkTypes());
}
// Restart download information
_downloadQueue.add(downloadRequest, _defaultStorageLocation, _permittedNetworkTypes);
}
