/**
* Find the "best" access in case theres more than one, based on what the CDM knows how to open
* and use.
*
* @param accessList choose from this list.
* @return best access method.
*/
public InvAccess chooseDatasetAccess(List<InvAccess> accessList) {
if (accessList.size() == 0) return null;
InvAccess access = null;
if (preferCdm) access = findAccessByServiceType(accessList, ServiceType.CdmRemote);
if (access == null)
access =
findAccessByServiceType(
accessList, ServiceType.FILE); // should mean that it can be opened through netcdf API
if (access == null)
access =
findAccessByServiceType(
accessList, ServiceType.NETCDF); // ServiceType.NETCDF is deprecated, use FILE
if (access == null) access = findAccessByServiceType(accessList, ServiceType.DODS);
if (access == null) access = findAccessByServiceType(accessList, ServiceType.OPENDAP);
if (access == null) access = findAccessByServiceType(accessList, ServiceType.CdmRemote);
// look for HTTP with format we can read
if (access == null) {
InvAccess tryAccess = findAccessByServiceType(accessList, ServiceType.HTTPServer);
if (tryAccess == null)
tryAccess =
findAccessByServiceType(
accessList, ServiceType.HTTP); // ServiceType.HTTP should be HTTPServer
if (tryAccess != null) {
DataFormatType format = tryAccess.getDataFormatType();
// these are the file types we can read
if ((DataFormatType.BUFR == format)
|| (DataFormatType.GINI == format)
|| (DataFormatType.GRIB1 == format)
|| (DataFormatType.GRIB2 == format)
|| (DataFormatType.HDF5 == format)
|| (DataFormatType.NCML == format)
|| (DataFormatType.NETCDF == format)
|| (DataFormatType.NEXRAD2 == format)
|| (DataFormatType.NIDS == format)) access = tryAccess;
}
}
// ADDE
if (access == null) access = findAccessByServiceType(accessList, ServiceType.ADDE);
// RESOLVER
if (access == null) {
access = findAccessByServiceType(accessList, ServiceType.RESOLVER);
}
return access;
}
private InvAccess findAccessByDataFormatType(List<InvAccess> accessList, DataFormatType type) {
for (InvAccess a : accessList) {
if (type.toString().equalsIgnoreCase(a.getDataFormatType().toString())) return a;
}
return null;
}
