/**
* Deletes the specified interface from a model-gateway mapping. Should take care of consistency
* issues such as: a) updating the default interface for the mapping (if we are deleting a default
* interface then the interface that will be set as default will be the one with the minimum id)
* and b) deleting the entire mapping, and the gateway entry from the Model3dIndexEntry if this is
* the last interface for the specified model-gateway mapping.
*
* @param givModelFilename the filename of the model in the mapping
* @param gwId the id of the gateway in the mapping
* @param givIntefaceId the id of the interface to be deleted
* @return true if successful, otherwise false. (To do )(Add code here)
*/
public static synchronized boolean deleteInterfaceEntry(
String givModelFilename, String gwId, long givIntefaceId) {
boolean successFlag = false;
Model3dIndexEntry existingEntry = checkforGivenEntry(givModelFilename);
if (existingEntry != null) {
//
// Remove the specified interface from the Metafile
//
existingEntry.removeInterfaceForGw(gwId, givIntefaceId);
//
// IF its the only interface then delete the gateway entry from the Model3dIndexEntry as well.
//
Vector<Model3dInterfaceEntry> tmpInterfaceVector =
existingEntry.getInterfacesVecForGwId(gwId);
if (tmpInterfaceVector != null && tmpInterfaceVector.isEmpty()) {
existingEntry.deleteGatewayEntry(gwId);
if (existingEntry.getMetaGatewaysVec().isEmpty()) {
// then delete Metafile AND the entry from the Model3dIndex
existingEntry.deleteMetafile();
Model3dIndex.deleteEntry(givModelFilename);
existingEntry = null;
}
} else if (givIntefaceId == existingEntry.getDefaultInterfaceIdForGwId(gwId)) {
//
// IF its the default interface then, change the default interface to a remaining interface
// with minimum id.
//
long newDefaultId = existingEntry.getMinInterfaceIdForGwId(gwId);
existingEntry.setDefaultInterfaceIdForGwId(gwId, newDefaultId);
}
//
// save changes to files.
//
Model3dIndex.writeIndexBackToFile();
return true;
}
return false;
}
