Package: FileEntity$FileEntityFinder

FileEntity$FileEntityFinder

name	instruction	branch	complexity	line	method
FileEntity.FileEntityFinder(FileEntity.FileEntityFinder, Object)	M: 15 C: 0 0%	M: 0 C: 0 100%	M: 1 C: 0 0%	M: 4 C: 0 0%	M: 1 C: 0 0%
computeNeededResults()	M: 29 C: 0 0%	M: 0 C: 0 100%	M: 1 C: 0 0%	M: 5 C: 0 0%	M: 1 C: 0 0%

Coverage

1: /*
2: * *************************************************************************************************************************************************************
3: *
4: * SteelBlue: DCI User Interfaces
5: * http://tidalwave.it/projects/steelblue
6: *
7: * Copyright (C) 2015 - 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/steelblue-src
22: * git clone https://github.com/tidalwave-it/steelblue-src
23: *
24: * *************************************************************************************************************************************************************
25: */
26: package it.tidalwave.role.ui.example.model;
27:
28: import javax.annotation.Nonnegative;
29: import javax.annotation.Nonnull;
30: import javax.annotation.concurrent.Immutable;
31: import java.time.ZoneId;
32: import java.time.ZonedDateTime;
33: import java.util.Collections;
34: import java.util.Comparator;
35: import java.util.List;
36: import java.util.Optional;
37: import java.io.IOException;
38: import java.io.UncheckedIOException;
39: import java.nio.file.Files;
40: import java.nio.file.Path;
41: import java.nio.file.attribute.BasicFileAttributeView;
42: import java.nio.file.attribute.BasicFileAttributes;
43: import java.nio.file.attribute.FileTime;
44: import it.tidalwave.util.As;
45: import it.tidalwave.util.spi.SimpleFinderSupport;
46: import it.tidalwave.role.SimpleComposite;
47: import it.tidalwave.role.ui.Displayable;
48: import lombok.EqualsAndHashCode;
49: import lombok.RequiredArgsConstructor;
50: import lombok.ToString;
51: import lombok.experimental.Delegate;
52: import lombok.extern.slf4j.Slf4j;
53: import static java.util.stream.Collectors.*;
54:
55: /***************************************************************************************************************************************************************
56: *
57: * A class that models a file with its attributes and children.
58: *
59: * @author Fabrizio Giudici
60: *
61: **************************************************************************************************************************************************************/
62: @Immutable @EqualsAndHashCode @ToString @Slf4j
63: public class FileEntity implements As, Displayable
64: {
65: @RequiredArgsConstructor
66: public static class FileEntityFinder extends SimpleFinderSupport<FileEntity>
67: {
68: private static final long serialVersionUID = 5780394869213L;
69:
70: @Nonnull
71: private final Path path;
72:
73: public FileEntityFinder (@Nonnull final FileEntityFinder other, @Nonnull final Object override)
74: {
75: super(other, override);
76: final var source = getSource(FileEntityFinder.class, other, override);
77: this.path = source.path;
78: }
79:
80: @Nonnull @Override
81: protected List<FileEntity> computeNeededResults()
82: {
83: try (final var stream = Files.list(path))
84: {
85: return stream.sorted(Comparator.comparing(Path::toString)).map(FileEntity::of).collect(toList());
86: }
87: catch (IOException e)
88: {
89: log.error("While listing directory " + path, e);
90: throw new UncheckedIOException(e);
91: }
92: }
93: }
94:
95: /** The path of the file.*/
96: @Nonnull
97: private final Path path;
98:
99: /** Support object for implementing {@link As} functions.*/
100: @Delegate
101: private final As delegate;
102:
103: /***********************************************************************************************************************************************************
104: * Creates a new instance related to the given path.
105: *
106: * @param path the path
107: **********************************************************************************************************************************************************/
108: // START SNIPPET: constructor
109: private FileEntity (@Nonnull final Path path)
110: {
111: this.path = path;
112: delegate = As.forObject(this, Files.isDirectory(path)
113: ? List.of(SimpleComposite.of(new FileEntityFinder(path)))
114: : Collections.emptyList());
115: }
116: // END SNIPPET: constructor
117:
118: /***********************************************************************************************************************************************************
119: * {@return a new instance} related to the given path.
120: * @param path the path
121: **********************************************************************************************************************************************************/
122: // START SNIPPET: constructor
123: @Nonnull
124: public static FileEntity of (@Nonnull final Path path)
125: {
126: return new FileEntity(path);
127: }
128:
129: /***********************************************************************************************************************************************************
130: * {@return the display name}. It's a static implementation of the {@link Displayable} role.
131: **********************************************************************************************************************************************************/
132: // START SNIPPET: constructor
133: @Override @Nonnull
134: public String getDisplayName()
135: {
136: return Optional.ofNullable(path.getFileName()).map(Path::toString).orElse("/");
137: }
138:
139: /***********************************************************************************************************************************************************
140: * {@return the creation date-time} of the file.
141: * @throws IOException if the file does not exist or cannot be accessed
142: **********************************************************************************************************************************************************/
143: @Nonnull
144: public ZonedDateTime getCreationDateTime()
145: throws IOException
146: {
147: return toZoneDateTime(getBasicFileAttributes().creationTime());
148: }
149:
150: /***********************************************************************************************************************************************************
151: * {@return the last access date-time} of the file.
152: * @throws IOException if the file does not exist or cannot be accessed
153: **********************************************************************************************************************************************************/
154: @Nonnull
155: public ZonedDateTime getLastAccessDateTime()
156: throws IOException
157: {
158: return toZoneDateTime(getBasicFileAttributes().lastAccessTime());
159: }
160:
161: /***********************************************************************************************************************************************************
162: * {@return the last modified date-time} of the file.
163: * @throws IOException if the file does not exist or cannot be accessed
164: **********************************************************************************************************************************************************/
165: @Nonnull
166: public ZonedDateTime getLastModifiedDateTime()
167: throws IOException
168: {
169: return toZoneDateTime(getBasicFileAttributes().lastModifiedTime());
170: }
171:
172: /***********************************************************************************************************************************************************
173: * {@return the size} of the file.
174: * @throws IOException if the file does not exist or cannot be accessed
175: **********************************************************************************************************************************************************/
176: @Nonnegative
177: public long getSize()
178: throws IOException
179: {
180: return Files.size(path);
181: }
182:
183: /***********************************************************************************************************************************************************
184: * {@return the basic attributes} of the file.
185: * @throws IOException if the file does not exist or cannot be accessed
186: **********************************************************************************************************************************************************/
187: @Nonnull
188: private BasicFileAttributes getBasicFileAttributes()
189: throws IOException
190: {
191: return Files.getFileAttributeView(path, BasicFileAttributeView.class).readAttributes();
192: }
193:
194: /***********************************************************************************************************************************************************
195: *
196: **********************************************************************************************************************************************************/
197: @Nonnull
198: private static ZonedDateTime toZoneDateTime (@Nonnull final FileTime dateTime)
199: {
200: return ZonedDateTime.ofInstant(dateTime.toInstant(), ZoneId.systemDefault());
201: }
202: }