Method: MarshallableLoadable(Object)

1: /*
2: * *********************************************************************************************************************
3: *
4: * TheseFoolishThings: Miscellaneous utilities
5: * http://tidalwave.it/projects/thesefoolishthings
6: *
7: * Copyright (C) 2009 - 2023 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.thesefoolishthings.examples.dci.marshal.role;
28:
29: import javax.annotation.Nonnull;
30: import java.io.IOException;
31: import java.nio.charset.Charset;
32: import java.nio.charset.StandardCharsets;
33: import java.nio.file.Files;
34: import java.nio.file.OpenOption;
35: import java.nio.file.Path;
36: import it.tidalwave.util.As;
37: import it.tidalwave.dci.annotation.DciRole;
38: import static it.tidalwave.role.io.Unmarshallable._Unmarshallable_;
39:
40: /***********************************************************************************************************************
41: *
42: * @author Fabrizio Giudici
43: *
44: **********************************************************************************************************************/
45: // START SNIPPET: marshallableloadable
46: @DciRole(datumType = Object.class)
47: public class MarshallableLoadable implements Loadable
48: {
49: @Nonnull
50: private final As datumAsDelegate;
51:
52: public MarshallableLoadable (@Nonnull final Object datum)
53: {
54: this.datumAsDelegate = As.forObject(datum);
55: }
56:
57: @Override
58: public <T> T loadFrom (@Nonnull final Path path, @Nonnull final Charset charset, @Nonnull final OpenOption ... openOptions)
59: throws IOException
60: {
61: assert charset.equals(StandardCharsets.UTF_8);
62:
63: try (var is = Files.newInputStream(path, openOptions))
64: {
65: return datumAsDelegate.as(_Unmarshallable_).unmarshal(is);
66: }
67: }
68: }
69: // END SNIPPET: marshallableloadable