content: /*
   * Copyright (C) 2018 The Android Open Source Project
   *
   * Licensed 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 com.android.layout.remote.api;
  
  import com.android.tools.layoutlib.annotations.NotNull;
  import com.android.tools.layoutlib.annotations.Nullable;
  
  import java.io.Serializable;
  import java.rmi.Remote;
  import java.rmi.RemoteException;
  
  public interface RemoteNamespaceResolver extends Remote {
      static final RemoteNamespaceResolver EMPTY_RESOLVER = new EmptyResolver();
  
      /** Returns the full URI of an XML namespace for a given prefix, if defined. */
      @Nullable
      String remotePrefixToUri(@NotNull String namespacePrefix) throws RemoteException;
  
      @Nullable
      String remoteUriToPrefix(@NotNull String namespaceUri) throws RemoteException;
  
      class EmptyResolver implements Serializable, RemoteNamespaceResolver {
          private EmptyResolver() {
          }
  
          @Override
          public String remotePrefixToUri(String namespacePrefix) {
              return null;
          }
  
          @Override
          public String remoteUriToPrefix(String namespaceUri) {
              return null;
          }
      }
  }
  