| gvSIG desktop 1

        // First try to download from the index base URL this package info has

        // been downloaded from, looking first as if the index is located in the

        // main version folder, and if not in the build folder. 

        // If also not there, download from the URL available in the 

        // downloadURL property.

        // Example baseURL: http://downloads.gvsig.org/download/gvsig-desktop/dists/2.0.0/

		String versionRelativePath = "../../pool/" + getCode() + "/"

				+ getPackageFileName();

		File file = downloadFromRelativeURL(download, versionRelativePath);

		if (file == null) {

	        // Example baseURL: http://downloads.gvsig.org/download/gvsig-desktop/dists/2.0.0/builds/2048/

			String buildRelativePath = "../../../../pool/" + getCode() + "/"

					+ getPackageFileName();

			file = downloadFromRelativeURL(download, buildRelativePath);

		}

		if (file == null) {

			file = downloadFromPackageInfoURL(download);

		}

		return file;

	}

	private File downloadFromRelativeURL(Download download,

			String buildRelativePath) {

		InstallerManager manager = InstallerLocator.getInstallerManager();

		URL baseURL = manager.getDownloadBaseURL();

		try {

			URL downloadURL = new URL(baseURL, buildRelativePath);

			return download.downloadFile(downloadURL, null);

		} catch (IOException e) {

			LOG.debug("Package " + getName()

					+ " not found relative to the build index URL: " + baseURL

					+ ", in the URL: " + buildRelativePath, e);

		}

		return null;

	}

	private File downloadFromPackageInfoURL(Download download) throws FileDownloadException {

		try {

			return download.downloadFile(this.getDownloadURL(), null);

		} catch (IOException ex3) {

			throw new FileDownloadException(this.getDownloadURL(), ex3);

		}

	}