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 the License.
12 * 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 an "AS IS" BASIS, WITHOUT WARRANTIES OR
17 * CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.
18 *
19 * *************************************************************************************************************************************************************
20 *
21 * git clone https://bitbucket.org/tidalwave/thesefoolishthings-src
22 * git clone https://github.com/tidalwave-it/thesefoolishthings-src
23 *
24 * *************************************************************************************************************************************************************
25 */
26 package it.tidalwave.thesefoolishthings.examples.dci.marshal.role;
27
28 import javax.annotation.Nonnull;
29 import java.io.IOException;
30 import java.nio.charset.Charset;
31 import java.nio.charset.StandardCharsets;
32 import java.nio.file.Files;
33 import java.nio.file.OpenOption;
34 import java.nio.file.Path;
35 import it.tidalwave.util.As;
36 import it.tidalwave.dci.annotation.DciRole;
37 import static it.tidalwave.role.io.Unmarshallable._Unmarshallable_;
38
39 /***************************************************************************************************************************************************************
40 *
41 * @author Fabrizio Giudici
42 *
43 **************************************************************************************************************************************************************/
44 // START SNIPPET: marshallableloadable
45 @DciRole(datumType = Object.class)
46 public class MarshallableLoadable implements Loadable
47 {
48 @Nonnull
49 private final As datumAsDelegate;
50
51 public MarshallableLoadable (@Nonnull final Object datum)
52 {
53 this.datumAsDelegate = As.forObject(datum);
54 }
55
56 @Override
57 public <T> T loadFrom (@Nonnull final Path path, @Nonnull final Charset charset, @Nonnull final OpenOption ... openOptions)
58 throws IOException
59 {
60 assert charset.equals(StandardCharsets.UTF_8);
61
62 try (final var is = Files.newInputStream(path, openOptions))
63 {
64 return datumAsDelegate.as(_Unmarshallable_).unmarshal(is);
65 }
66 }
67 }
68 // END SNIPPET: marshallableloadable