public static List<IComponent> filterNeededComponents(
Item item, RepositoryNode seletetedNode, ERepositoryObjectType type) {
if (!GlobalServiceRegister.getDefault().isServiceRegistered(IComponentsService.class)) {
return Collections.emptyList();
}
IComponentsService service =
(IComponentsService)
GlobalServiceRegister.getDefault().getService(IComponentsService.class);
Set<IComponent> components = service.getComponentsFactory().getComponents();
List<IComponent> neededComponents = new ArrayList<IComponent>();
List<IComponent> exceptedComponents = new ArrayList<IComponent>();
for (IComponent component : components) {
//
for (RepositoryComponentDndFilterSetting dndFilter : getDndFilterSettings()) {
IRepositoryComponentDndFilter filter = dndFilter.getFilter();
if (filter == null) {
continue;
}
String repositoryType = filter.getRepositoryType(item, type);
if (repositoryType == null) {
continue;
}
if (!exceptedComponents.contains(component)
&& filter.except(item, type, seletetedNode, component, repositoryType)) {
exceptedComponents.add(component);
}
// if have been excepted, so no need add it to needed component
if (!exceptedComponents.contains(component)
&& !neededComponents.contains(component)
&& filter.valid(item, type, seletetedNode, component, repositoryType)) {
neededComponents.add(component);
}
}
}
// remove all excepted components
neededComponents.removeAll(exceptedComponents);
return sortFilteredComponnents(item, seletetedNode, type, neededComponents);
}
private static void init() {
IExtensionRegistry registry = Platform.getExtensionRegistry();
IConfigurationElement[] configurationElements =
registry.getConfigurationElementsFor(
"org.talend.core.runtime.repositoryComponent_provider"); //$NON-NLS-1$
List<String> repositoryComponentNames = new ArrayList<String>();
List<String> dndFilterIds = new ArrayList<String>();
List<String> componentIds = new ArrayList<String>();
for (int i = 0; i < configurationElements.length; i++) {
IConfigurationElement element = configurationElements[i];
if (element.getName().equals("ExtensionFilter")) { // $NON-NLS-1$
//
List<String> filterAttrs =
getFilterAttrs(
element,
"RepositoryComponentFilter", //$NON-NLS-1$
"repositoryComponentName"); //$NON-NLS-1$
repositoryComponentNames.addAll(filterAttrs);
//
filterAttrs =
getFilterAttrs(
element,
"DragAndDropFilterFilter", //$NON-NLS-1$
"dndFilterId"); //$NON-NLS-1$
dndFilterIds.addAll(filterAttrs);
//
filterAttrs =
getFilterAttrs(
element,
"SortedComponentFilter", //$NON-NLS-1$
"componentId"); //$NON-NLS-1$
componentIds.addAll(filterAttrs);
}
}
for (int i = 0; i < configurationElements.length; i++) {
IConfigurationElement element = configurationElements[i];
if (element.getName().equals("RepositoryComponent")) { // $NON-NLS-1$
String name = element.getAttribute("name"); // $NON-NLS-1$
if (repositoryComponentNames.contains(name)) {
continue; // filter
}
String type = element.getAttribute("type"); // $NON-NLS-1$
boolean withSchema =
Boolean.parseBoolean(element.getAttribute("withSchema")); // $NON-NLS-1$
String input = element.getAttribute("input"); // $NON-NLS-1$
String output = element.getAttribute("output"); // $NON-NLS-1$
String def = element.getAttribute("default"); // $NON-NLS-1$
IRepositoryComponentAgent agent = null;
if (element.getAttribute("agent") != null) { // $NON-NLS-1$
try {
Object object = element.createExecutableExtension("agent"); // $NON-NLS-1$
if (object != null && (object instanceof IRepositoryComponentAgent)) {
agent = (IRepositoryComponentAgent) object;
}
} catch (Exception e) {
//
}
}
RepositoryComponentSetting setting = new RepositoryComponentSetting();
setting.setName(name);
setting.setRepositoryType(type);
setting.setWithSchema(withSchema);
setting.setInputComponent(input);
setting.setOutputComponent(output);
setting.setDefaultComponent(def);
setting.setClasses(retrieveClasses(element));
setting.setDbTypes(retrieveDBTypes(element));
setting.setAgent(agent);
repComponentSettings.add(setting);
} else if (element.getName().equals("DragAndDropFilter")) { // $NON-NLS-1$
String id = element.getAttribute("id"); // $NON-NLS-1$
if (dndFilterIds.contains(id)) {
continue; // filter
}
String name = element.getAttribute("name"); // $NON-NLS-1$
int level = parserLevel(element.getAttribute("level")); // $NON-NLS-1$
IRepositoryComponentDndFilter filter = null;
try {
Object object = element.createExecutableExtension("clazz"); // $NON-NLS-1$
if (object == null || !(object instanceof IRepositoryComponentDndFilter)) {
throw new IllegalArgumentException("the argument of clazz is wrong"); // $NON-NLS-1$
}
filter = (IRepositoryComponentDndFilter) object;
} catch (Exception e) {
ExceptionHandler.process(e);
}
RepositoryComponentDndFilterSetting dndSetting = new RepositoryComponentDndFilterSetting();
dndSetting.setId(id);
dndSetting.setName(name);
dndSetting.setLevel(level);
dndSetting.setFilter(filter);
repComponentDndFilterSettings.add(dndSetting);
} else if (element.getName().equals("SortedComponents")) { // $NON-NLS-1$
retrieveSortedComponent(
componentIds, sortedComponentSetting, element, "Component"); // $NON-NLS-1$
retrieveSortedComponent(
componentIds,
specialSortedComponentSetting,
element,
"SpecialComponent"); //$NON-NLS-1$
}
}
}