ECode RegisteredServicesCache::constructor(
    /* [in] */ IContext* context,
    /* [in] */ const String& interfaceName,
    /* [in] */ const String& metaDataName,
    /* [in] */ const String& attributeName,
    /* [in] */ IXmlSerializerAndParser* serializerAndParser)
{
    mContext = context;
    mInterfaceName = interfaceName;
    mMetaDataName = metaDataName;
    mAttributesName = attributeName;
    mSerializerAndParser = serializerAndParser;

    mPackageReceiver = (IBroadcastReceiver*)new RegisteredServicesCache::PackageReceiver(this);
    mPackageReceiver = (IBroadcastReceiver*)new RegisteredServicesCache::ExternalReceiver(this);

    AutoPtr<IEnvironment> env;
    CEnvironment::AcquireSingleton((IEnvironment**)&env);
    AutoPtr<IFile> dataDir;
    env->GetDataDirectory((IFile**)&dataDir);
    AutoPtr<IFile> systemDir, syncDir, interFile;
    CFile::New(dataDir, String("system"), (IFile**)&systemDir);
    CFile::New(systemDir, String("registered_services"), (IFile**)&syncDir);
    CFile::New(syncDir, interfaceName + String(".xml"), (IFile**)&interFile);
    CAtomicFile::New(interFile, (IAtomicFile**)&mPersistentServicesFile);

    // Load persisted services from disk
    ReadPersistentServicesLocked();

    AutoPtr<IIntentFilter> intentFilter;
    CIntentFilter::New((IIntentFilter**)&intentFilter);
    intentFilter->AddAction(IIntent::ACTION_PACKAGE_ADDED);
    intentFilter->AddAction(IIntent::ACTION_PACKAGE_CHANGED);
    intentFilter->AddAction(IIntent::ACTION_PACKAGE_REMOVED);
    intentFilter->AddDataScheme(String("package"));
    AutoPtr<IIntent> intent;
    mContext->RegisterReceiverAsUser(mPackageReceiver, UserHandle::ALL, intentFilter, String(NULL), NULL, (IIntent**)&intent);

    // Register for events related to sdcard installation.
    AutoPtr<IIntentFilter> sdFilter;
    CIntentFilter::New((IIntentFilter**)&sdFilter);
    sdFilter->AddAction(IIntent::ACTION_EXTERNAL_APPLICATIONS_AVAILABLE);
    sdFilter->AddAction(IIntent::ACTION_EXTERNAL_APPLICATIONS_UNAVAILABLE);
    intent = NULL;
    mContext->RegisterReceiver(mExternalReceiver, sdFilter, (IIntent**)&intent);
    return NOERROR;
}