@Override protected Map<OrderEntry, OrderAware> importData( @NotNull final Collection<DataNode<LibraryDependencyData>> nodesToImport, @NotNull final Module module, @NotNull final IdeModifiableModelsProvider modelsProvider) { // The general idea is to import all external project library dependencies and module libraries // which don't present at the // ide side yet and remove all project library dependencies and module libraries which present // at the ide but not at // the given collection. // The trick is that we should perform module settings modification inside try/finally block // against target root model. // That means that we need to prepare all necessary data, obtain a model and modify it as // necessary. final Map<Set<String> /* library paths */, LibraryDependencyData> moduleLibrariesToImport = ContainerUtilRt.newHashMap(); final Map<String /* library name + scope */, LibraryDependencyData> projectLibrariesToImport = ContainerUtilRt.newHashMap(); final Set<LibraryDependencyData> toImport = ContainerUtilRt.newLinkedHashSet(); final Map<OrderEntry, OrderAware> orderEntryDataMap = ContainerUtil.newLinkedHashMap(); boolean hasUnresolved = false; for (DataNode<LibraryDependencyData> dependencyNode : nodesToImport) { LibraryDependencyData dependencyData = dependencyNode.getData(); LibraryData libraryData = dependencyData.getTarget(); hasUnresolved |= libraryData.isUnresolved(); switch (dependencyData.getLevel()) { case MODULE: Set<String> paths = ContainerUtilRt.newHashSet(); for (String path : libraryData.getPaths(LibraryPathType.BINARY)) { paths.add( ExternalSystemApiUtil.toCanonicalPath(path) + dependencyData.getScope().name()); } moduleLibrariesToImport.put(paths, dependencyData); toImport.add(dependencyData); break; case PROJECT: projectLibrariesToImport.put( libraryData.getInternalName() + dependencyData.getScope().name(), dependencyData); toImport.add(dependencyData); } } final boolean finalHasUnresolved = hasUnresolved; final ModifiableRootModel modifiableRootModel = modelsProvider.getModifiableRootModel(module); LibraryTable moduleLibraryTable = modifiableRootModel.getModuleLibraryTable(); syncExistingAndRemoveObsolete( modelsProvider, moduleLibrariesToImport, projectLibrariesToImport, toImport, orderEntryDataMap, modifiableRootModel, finalHasUnresolved); // Import missing library dependencies. if (!toImport.isEmpty()) { importMissing( modelsProvider, toImport, orderEntryDataMap, modifiableRootModel, moduleLibraryTable, module); } return orderEntryDataMap; }