| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| package org.netbeans.core; |
| |
| import java.io.IOException; |
| import java.io.ObjectInputStream; |
| import java.io.ObjectOutputStream; |
| import java.util.ArrayList; |
| import java.util.Collection; |
| import java.util.Collections; |
| import java.util.Enumeration; |
| import java.util.HashMap; |
| import java.util.Iterator; |
| import java.util.LinkedList; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Map.Entry; |
| import java.util.logging.Level; |
| import java.util.logging.Logger; |
| import org.openide.ServiceType; |
| import org.openide.cookies.InstanceCookie; |
| import org.openide.filesystems.FileObject; |
| import org.openide.filesystems.FileUtil; |
| import org.openide.loaders.DataFolder; |
| import org.openide.loaders.DataObject; |
| import org.openide.loaders.DataObjectNotFoundException; |
| import org.openide.loaders.InstanceDataObject; |
| import org.openide.util.Lookup; |
| import org.openide.util.LookupEvent; |
| import org.openide.util.LookupListener; |
| import org.openide.util.io.NbMarshalledObject; |
| |
| /** Works with all service types. |
| * |
| * @author Jaroslav Tulach |
| * @deprecated Obsoleted by lookup and new settings system. |
| */ |
| @SuppressWarnings({"deprecation","unchecked"}) |
| @Deprecated |
| @org.openide.util.lookup.ServiceProvider(service=org.openide.ServiceType.Registry.class) |
| public final class Services extends ServiceType.Registry implements LookupListener { |
| /** serial */ |
| static final long serialVersionUID =-7558069607307508327L; |
| |
| /** Result containing all current services. */ |
| private Lookup.Result<ServiceType> allTypes; |
| |
| /** Mapping between service name and given ServiceType instance. */ |
| private Map<String, ServiceType> name2Service; |
| |
| /** Default instance */ |
| public static Services getDefault () { |
| return (Services)Lookup.getDefault ().lookup (org.openide.ServiceType.Registry.class); |
| } |
| |
| public Services() { |
| name2Service = new HashMap<String, ServiceType>(); |
| } |
| |
| public ServiceType find(Class clazz) { |
| return (ServiceType)Lookup.getDefault().lookup(clazz); |
| } |
| |
| /** Override to specially look up no-op services. */ |
| public ServiceType find (String name) { |
| Map<String, ServiceType> lookupMap = name2Service; |
| ServiceType ret; |
| synchronized (lookupMap) { |
| ret = lookupMap.get(name); |
| } |
| |
| if (ret == null) { |
| ret = super.find(name); |
| synchronized (lookupMap) { |
| lookupMap.put(name, ret); |
| } |
| } |
| |
| return ret; |
| } |
| |
| /** Result containing all current services. */ |
| private Lookup.Result<ServiceType> getTypesResult() { |
| boolean init = false; |
| synchronized (this) { |
| if (allTypes == null) { |
| allTypes = Lookup.getDefault().lookupResult(ServiceType.class); |
| allTypes.addLookupListener(this); |
| init = true; |
| } |
| } |
| if (init) resultChanged(null); |
| return allTypes; |
| } |
| |
| /** A change in lookup occured. |
| * @param ev event describing the change |
| */ |
| public void resultChanged(LookupEvent ev) { |
| synchronized (name2Service) { |
| name2Service.clear(); |
| } |
| } |
| |
| /** Getter for list of all services types. |
| * @return list of ServiceType |
| */ |
| public java.util.List<ServiceType> getServiceTypes () { |
| return new ArrayList<ServiceType>(getTypesResult().allInstances()); |
| } |
| |
| /** Setter for list of all services types. This allows to change |
| * instaces of the objects but only of the types that are already registered |
| * to the system by manifest sections. |
| * |
| * @param arr list of ServiceTypes |
| */ |
| public synchronized void setServiceTypes (java.util.List/*<ServiceType>*/ arr0) { |
| if (arr0 == null) { |
| throw new NullPointerException(); |
| } |
| |
| @SuppressWarnings("unchecked") java.util.List<ServiceType> arr = ensureSingleness((java.util.List<ServiceType>) arr0); |
| |
| HashMap<ServiceType,DataObject> services = new HashMap<ServiceType,DataObject>(20); // <service type, DataObject> |
| searchServices(findSessionFolder("Services").getPrimaryFile(), services); // NOI18N |
| |
| // storing services |
| HashMap<DataFolder,List<DataObject>> order = new HashMap<DataFolder,List<DataObject>>(10); // <parent folder, <file>> |
| Iterator<ServiceType> it = arr.iterator(); |
| while (it.hasNext()) { |
| ServiceType st = it.next(); |
| DataObject dobj = services.get(st); |
| |
| if (dobj != null) { |
| // store existing |
| try { |
| dobj = InstanceDataObject.create(dobj.getFolder(), dobj.getPrimaryFile().getName(), st, null); |
| } catch (IOException ex) { |
| Logger.getLogger(Services.class.getName()).log(Level.WARNING, null, ex); |
| } |
| services.remove(st); |
| } else { |
| dobj = storeNewServiceType(st); |
| } |
| |
| // compute order in folders |
| if (dobj != null) { |
| DataFolder parent = dobj.getFolder(); |
| List<DataObject> orderedFiles = order.get(parent); |
| if (orderedFiles == null) { |
| orderedFiles = new ArrayList<DataObject>(6); |
| order.put(parent, orderedFiles); |
| } |
| orderedFiles.add(dobj); |
| } |
| } |
| |
| // storing order attribute |
| for (Entry<DataFolder,List<DataObject>> entry: order.entrySet()) { |
| DataObject parent = entry.getKey(); |
| List<DataObject> orderedFiles = entry.getValue(); |
| if (orderedFiles.size() < 2) continue; |
| |
| Iterator<DataObject> files = orderedFiles.iterator(); |
| StringBuilder orderAttr = new StringBuilder(64); |
| while (files.hasNext()) { |
| DataObject file = files.next(); |
| orderAttr.append(file.getPrimaryFile().getNameExt()).append('/'); |
| } |
| orderAttr.deleteCharAt(orderAttr.length() - 1); |
| try { |
| parent.getPrimaryFile(). |
| setAttribute("OpenIDE-Folder-Order", orderAttr.toString()); // NOI18N |
| } catch (IOException ex) { |
| Logger.getLogger(Services.class.getName()).log(Level.WARNING, null, ex); |
| } |
| } |
| |
| // remove remaining services from default FS |
| for (DataObject dobj: services.values()) { |
| try { |
| dobj.delete(); |
| } catch (IOException ex) { |
| Logger.getLogger(Services.class.getName()).log(Level.WARNING, null, ex); |
| } |
| } |
| |
| } |
| |
| private DataObject storeNewServiceType(ServiceType st) { |
| Class stype = st.getClass (); |
| // finds direct subclass of service type |
| while (stype.getSuperclass () != ServiceType.class) { |
| stype = stype.getSuperclass(); |
| } |
| |
| try{ |
| String folder = org.openide.util.Utilities.getShortClassName(stype); |
| |
| DataFolder dfServices = findSessionFolder("Services"); // NOI18N |
| DataFolder dfTarget = DataFolder.create(dfServices, folder); |
| |
| return InstanceDataObject.create(dfTarget, null, st, null); |
| } catch (Exception ex) { |
| Logger.getLogger(Services.class.getName()).log(Level.WARNING, null, ex); |
| return null; |
| } |
| } |
| |
| /** ensure that instance of the service type will be listed just once. |
| */ |
| private List<ServiceType> ensureSingleness(List<ServiceType> l) { |
| List<ServiceType> newList = new ArrayList<ServiceType>(l.size()); |
| |
| for (ServiceType stype: l) { |
| if (newList.contains(stype)) { |
| continue; |
| } else { |
| newList.add(stype); |
| } |
| } |
| |
| return newList; |
| } |
| |
| /** search all data objects containing service type instance. */ |
| private void searchServices(FileObject folder, Map<ServiceType,DataObject> services) { |
| FileObject[] fobjs = folder.getChildren(); |
| for (int i = 0; i < fobjs.length; i++) { |
| if (!fobjs[i].isValid()) |
| continue; |
| if (fobjs[i].isFolder()) { |
| searchServices(fobjs[i], services); |
| } else { |
| try { |
| DataObject dobj = DataObject.find(fobjs[i]); |
| InstanceCookie inst = (InstanceCookie) dobj.getCookie(InstanceCookie.class); |
| |
| if (inst == null) |
| continue; |
| if (instanceOf(inst, ServiceType.class)) { |
| ServiceType ser = (ServiceType) inst.instanceCreate(); |
| |
| services.put(ser, dobj); |
| } |
| } |
| catch (DataObjectNotFoundException ex) { |
| } |
| catch (Exception ex) { |
| Logger.getLogger(Services.class.getName()).log(Level.WARNING, null, ex); |
| } |
| } |
| } |
| } |
| |
| /** test if instance cookie is instance of clazz*/ |
| private static boolean instanceOf(InstanceCookie inst, Class clazz) { |
| if (inst instanceof InstanceCookie.Of) { |
| return ((InstanceCookie.Of) inst).instanceOf(clazz); |
| } else { |
| try { |
| return clazz.isAssignableFrom(inst.instanceClass()); |
| } catch (Exception ex) { |
| Logger.getLogger(Services.class.getName()).log(Level.WARNING, null, ex); |
| return false; |
| } |
| } |
| } |
| |
| /** all services */ |
| public Enumeration<ServiceType> services () { |
| return Collections.enumeration (getServiceTypes ()); |
| } |
| |
| /** Get all available services that are subclass of given class |
| * @param clazz the class that all services should be subclass of |
| * @return an enumeration of {@link ServiceType}s that are subclasses of |
| * given class |
| */ |
| public <T extends ServiceType> Enumeration<T> services(Class<T> clazz) { |
| if (clazz == null) return org.openide.util.Enumerations.empty(); |
| Collection res = Lookup.getDefault().lookupAll(clazz); |
| return Collections.enumeration(res); |
| } |
| |
| /** Write the object down. |
| */ |
| private void writeObject (ObjectOutputStream oos) throws IOException { |
| Enumeration en = services (); |
| while (en.hasMoreElements ()) { |
| ServiceType s = (ServiceType)en.nextElement (); |
| |
| NbMarshalledObject obj; |
| try { |
| obj = new NbMarshalledObject (s); |
| } catch (IOException ex) { |
| Logger.getLogger(Services.class.getName()).log(Level.WARNING, null, ex); |
| // skip the object if it cannot be serialized |
| obj = null; |
| } |
| if (obj != null) { |
| oos.writeObject (obj); |
| } |
| } |
| |
| oos.writeObject (null); |
| } |
| |
| /** Read the object. |
| */ |
| private void readObject (ObjectInputStream oos) |
| throws IOException, ClassNotFoundException { |
| final LinkedList<ServiceType> ll = new LinkedList<ServiceType> (); |
| for (;;) { |
| NbMarshalledObject obj = (NbMarshalledObject) oos.readObject(); |
| |
| if (obj == null) { |
| break; |
| } |
| try { |
| ServiceType s = (ServiceType) obj.get(); |
| |
| ll.add(s); |
| } |
| catch (IOException ex) { |
| Logger.getLogger(Services.class.getName()).log(Level.WARNING, null, ex); |
| } |
| catch (ClassNotFoundException ex) { |
| Logger.getLogger(Services.class.getName()).log(Level.WARNING, null, ex); |
| } |
| } |
| |
| getDefault ().setServiceTypes (ll); |
| } |
| |
| /** Only one instance */ |
| private Object readResolve () { |
| return getDefault (); |
| } |
| |
| private static DataFolder findSessionFolder(String name) { |
| try { |
| FileObject fo = FileUtil.getConfigFile(name); |
| if (fo == null) { |
| // resource not found, try to create new folder |
| fo = FileUtil.createFolder(FileUtil.getConfigRoot(), name); |
| } |
| return DataFolder.findFolder(fo); |
| } catch (IOException ex) { |
| throw (IllegalStateException) new IllegalStateException("Folder not found and cannot be created: " + name).initCause(ex); // NOI18N |
| } |
| } |
| |
| } |