1 /*
2  * Copyright (C) 2018 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package com.android.layout.remote.api;
18 
19 import com.android.tools.layoutlib.annotations.NotNull;
20 import com.android.tools.layoutlib.annotations.Nullable;
21 
22 import java.io.Serializable;
23 import java.rmi.Remote;
24 import java.rmi.RemoteException;
25 
26 public interface RemoteNamespaceResolver extends Remote {
27     static final RemoteNamespaceResolver EMPTY_RESOLVER = new EmptyResolver();
28 
29     /** Returns the full URI of an XML namespace for a given prefix, if defined. */
30     @Nullable
remotePrefixToUri(@otNull String namespacePrefix)31     String remotePrefixToUri(@NotNull String namespacePrefix) throws RemoteException;
32 
33     @Nullable
remoteUriToPrefix(@otNull String namespaceUri)34     String remoteUriToPrefix(@NotNull String namespaceUri) throws RemoteException;
35 
36     class EmptyResolver implements Serializable, RemoteNamespaceResolver {
EmptyResolver()37         private EmptyResolver() {
38         }
39 
40         @Override
remotePrefixToUri(String namespacePrefix)41         public String remotePrefixToUri(String namespacePrefix) {
42             return null;
43         }
44 
45         @Override
remoteUriToPrefix(String namespaceUri)46         public String remoteUriToPrefix(String namespaceUri) {
47             return null;
48         }
49     }
50 }
51