Method: get()

1: /*
2: * *********************************************************************************************************************
3: *
4: * TheseFoolishThings: Miscellaneous utilities
5: * http://tidalwave.it/projects/thesefoolishthings
6: *
7: * Copyright (C) 2009 - 2024 by Tidalwave s.a.s. (http://tidalwave.it)
8: *
9: * *********************************************************************************************************************
10: *
11: * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
12: * the License. You may obtain a copy of the License at
13: *
14: * http://www.apache.org/licenses/LICENSE-2.0
15: *
16: * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
17: * an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
18: * specific language governing permissions and limitations under the License.
19: *
20: * *********************************************************************************************************************
21: *
22: * git clone https://bitbucket.org/tidalwave/thesefoolishthings-src
23: * git clone https://github.com/tidalwave-it/thesefoolishthings-src
24: *
25: * *********************************************************************************************************************
26: */
27: package it.tidalwave.actor.impl;
28:
29: import javax.annotation.Nonnull;
30: import javax.inject.Provider;
31:
32: /***********************************************************************************************************************
33: *
34: * A trimmed down replacement for OpenBlueSky Locator, in order to avoid depending on OpenBlueSky.
35: *
36: * @author Fabrizio Giudici
37: *
38: **********************************************************************************************************************/
39: public class Locator
40: {
41: public static class NotFoundException extends RuntimeException
42: {
43: NotFoundException (@Nonnull final Class<?> serviceClass)
44: {
45: super("Not found: " + serviceClass);
46: }
47:
48: NotFoundException (@Nonnull final String name)
49: {
50: super("Not found: " + name);
51: }
52: }
53:
54: @Nonnull
55: public static <T> Provider<T> createProviderFor (@Nonnull final Class<? extends T> serviceClass)
56: {
57: return new Provider<>()
58: {
59: @Override @Nonnull
60: public T get ()
61: {
62: return find(serviceClass);
63: }
64: };
65: }
66:
67: /*******************************************************************************************************************
68: *
69: *
70: ******************************************************************************************************************/
71: @Nonnull
72: private static <T> T find (@Nonnull final Class<T> serviceClass)
73: {
74: // final T service = Lookup.getDefault().lookup(serviceClass); FIXME
75: //
76: // if (service == null)
77: // {
78: throw new NotFoundException(serviceClass);
79: // }
80: //
81: // return service;
82: }
83: }