final Bundle installAtomosContent()

in atomos/src/main/java/org/apache/felix/atomos/impl/base/AtomosBase.java [454:530]
69 lines of code
13 McCabe index (conditional complexity)

    final Bundle installAtomosContent(String prefix,
        AtomosContentBase atomosContent)
        throws BundleException
    {
        if (prefix == null)
        {
            prefix = "atomos";
        }
        if (prefix.indexOf(':') != -1)
        {
            throw new IllegalArgumentException("The prefix cannot contain ':'");
        }
        prefix = prefix + ':';
        debug("Installing atomos content: %s%s", prefix,
            atomosContent.getAtomosLocation());

        BundleContext bc = context.get();
        if (bc == null)
        {
            throw new IllegalStateException("Framework has not been initialized.");
        }

        String location = atomosContent.getAtomosLocation();
        if (!Constants.SYSTEM_BUNDLE_LOCATION.equals(location))
        {
            location = prefix + location;
        }

        AtomosLayerBase atomosLayer = (AtomosLayerBase) atomosContent.getAtomosLayer();
        if (atomosLayer.isNotValid())
        {
            throw new BundleException("Atomos layer has been uninstalled.",
                BundleException.INVALID_OPERATION);
        }

        String existingLoc = getByAtomosContent(atomosContent);
        if (existingLoc != null)
        {
            Bundle existing = bc.getBundle(existingLoc);
            if (existing != null)
            {
                if (Constants.SYSTEM_BUNDLE_LOCATION.equals(existingLoc)
                    || (existingLoc.equals(location)
                        && atomosContent.getBundle() == existing))
                {
                    return existing;
                }
                throw new BundleException(
                    "Atomos content is already connected with bundle: "
                        + existing,
                    BundleException.DUPLICATE_BUNDLE_ERROR);
            }
        }

        atomosContent.disconnect();
        atomosContent.connect(location);

        Bundle result = null;
        try
        {
            result = bc.installBundle(location);
        }
        finally
        {
            // check if the layer is still valid
            if (atomosLayer.isNotValid())
            {
                // The atomosLayer became invalid while installing
                if (result != null)
                {
                    result.uninstall();
                    result = null;
                }
            }
        }
        return result;
    }