Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
Connector |
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| 1.0;1 |
1 | /* | |
2 | * FCKeditor - The text editor for Internet - http://www.fckeditor.net | |
3 | * Copyright (C) 2004-2010 Frederico Caldeira Knabben | |
4 | * | |
5 | * == BEGIN LICENSE == | |
6 | * | |
7 | * Licensed under the terms of any of the following licenses at your | |
8 | * choice: | |
9 | * | |
10 | * - GNU General Public License Version 2 or later (the "GPL") | |
11 | * http://www.gnu.org/licenses/gpl.html | |
12 | * | |
13 | * - GNU Lesser General Public License Version 2.1 or later (the "LGPL") | |
14 | * http://www.gnu.org/licenses/lgpl.html | |
15 | * | |
16 | * - Mozilla Public License Version 1.1 or later (the "MPL") | |
17 | * http://www.mozilla.org/MPL/MPL-1.1.html | |
18 | * | |
19 | * == END LICENSE == | |
20 | */ | |
21 | package net.fckeditor.connector; | |
22 | ||
23 | import java.io.InputStream; | |
24 | import java.util.List; | |
25 | import java.util.Map; | |
26 | ||
27 | import javax.servlet.ServletContext; | |
28 | ||
29 | import net.fckeditor.connector.exception.FolderAlreadyExistsException; | |
30 | import net.fckeditor.connector.exception.InvalidCurrentFolderException; | |
31 | import net.fckeditor.connector.exception.InvalidNewFolderNameException; | |
32 | import net.fckeditor.connector.exception.ReadException; | |
33 | import net.fckeditor.connector.exception.WriteException; | |
34 | import net.fckeditor.connector.impl.AbstractLocalFileSystemConnector; | |
35 | import net.fckeditor.handlers.RequestCycleHandler; | |
36 | import net.fckeditor.handlers.ResourceType; | |
37 | import net.fckeditor.requestcycle.ThreadLocalData; | |
38 | ||
39 | /** | |
40 | * Backend interface of a File Browser connector. A connector serves and manages | |
41 | * files and folders accessed through the File Browser on an arbitrary backend | |
42 | * system.<br /> | |
43 | * The connector will receive a request if, and only if, the request was valid | |
44 | * in terms of valid and reasonable parameters up to an abstract point which is | |
45 | * independent from a specific connector implementation. | |
46 | * <p> | |
47 | * Helpful classes and methods: | |
48 | * <ol> | |
49 | * <li>If you need to access the request instance itself and/or the context | |
50 | * parameters sent from the File Browser, take a look at the | |
51 | * {@link ThreadLocalData} class.</li> | |
52 | * <li>Use | |
53 | * {@link RequestCycleHandler#getUserFilesAbsolutePath(javax.servlet.http.HttpServletRequest) | |
54 | * RequestCycleHandler.getUserFilesAbsolutePath}, | |
55 | * {@link AbstractLocalFileSystemConnector#getRealUserFilesAbsolutePath(java.lang.String) | |
56 | * AbstractLocalFileSystemConnector.getRealUserFilesAbsolutePath} (if use it) to | |
57 | * resolve the real path or simply do it yourself.</li> | |
58 | * </ol> | |
59 | * </p> | |
60 | * | |
61 | * @version $Id: Connector.java 4785 2009-12-21 20:10:28Z mosipov $ | |
62 | */ | |
63 | public interface Connector { | |
64 | ||
65 | /** Key 'name' for a file's name */ | |
66 | public final static String KEY_NAME = "name"; | |
67 | ||
68 | /** Key 'size' for a file's length */ | |
69 | public final static String KEY_SIZE = "size"; | |
70 | ||
71 | /** | |
72 | * Initializes this connector. Called at {@link Dispatcher dispatcher} | |
73 | * initialization. | |
74 | * | |
75 | * @param servletContext | |
76 | * reference to the {@link ServletContext} in which the caller is | |
77 | * running | |
78 | * @throws Exception | |
79 | * if the connector initialization fails due to some reason | |
80 | */ | |
81 | public void init(final ServletContext servletContext) throws Exception; | |
82 | ||
83 | /** | |
84 | * Returns a list of file attributes from the backend. Use the pre-defined | |
85 | * keys ({@value #KEY_NAME}, {@value #KEY_SIZE}) to put file attributes into | |
86 | * the file map. The file length can be any instance of {@link Number}, its | |
87 | * long value will be taken as the final value. | |
88 | * | |
89 | * @param type | |
90 | * the current resource type | |
91 | * @param currentFolder | |
92 | * the current folder | |
93 | * @return a list of file attributes | |
94 | * @throws InvalidCurrentFolderException | |
95 | * if the current folder name is invalid or does not exist | |
96 | * within the underlying backend | |
97 | * @throws ReadException | |
98 | * if the file attributes could not be read due to some reason | |
99 | */ | |
100 | public List<Map<String, Object>> getFiles(final ResourceType type, | |
101 | final String currentFolder) throws InvalidCurrentFolderException, | |
102 | ReadException; | |
103 | ||
104 | /** | |
105 | * Returns a list of folders from the backend. | |
106 | * | |
107 | * @param type | |
108 | * the current resource type | |
109 | * @param currentFolder | |
110 | * the current folder | |
111 | * @return a list of folder names | |
112 | * @throws InvalidCurrentFolderException | |
113 | * if the current folder name is invalid or does not exist | |
114 | * within the underlying backend | |
115 | * @throws ReadException | |
116 | * if the folder names could not be read due to some reason | |
117 | */ | |
118 | public List<String> getFolders(final ResourceType type, | |
119 | final String currentFolder) throws InvalidCurrentFolderException, | |
120 | ReadException; | |
121 | ||
122 | /** | |
123 | * Creates a new folder on the backend. | |
124 | * | |
125 | * @param type | |
126 | * the current resource type | |
127 | * @param currentFolder | |
128 | * the current folder | |
129 | * @param newFolder | |
130 | * name of the new folder | |
131 | * @throws InvalidCurrentFolderException | |
132 | * if the current folder name is invalid or does not exist | |
133 | * within the underlying backend | |
134 | * @throws InvalidNewFolderNameException | |
135 | * if the new folder name is invalid due to some reason | |
136 | * @throws FolderAlreadyExistsException | |
137 | * if the new folder already exists | |
138 | * @throws WriteException | |
139 | * if the new folder could not be created due to some reason | |
140 | */ | |
141 | public void createFolder(final ResourceType type, | |
142 | final String currentFolder, final String newFolder) | |
143 | throws InvalidCurrentFolderException, | |
144 | InvalidNewFolderNameException, FolderAlreadyExistsException, | |
145 | WriteException; | |
146 | ||
147 | /** | |
148 | * Uploads a new file on to the backend. You are not allowed to overwrite | |
149 | * already existing files, rename the new file and return the new filename. | |
150 | * | |
151 | * @param type | |
152 | * the current resource type | |
153 | * @param currentFolder | |
154 | * the current folder | |
155 | * @param fileName | |
156 | * the name of the new file | |
157 | * @param inputStream | |
158 | * input stream of the new file | |
159 | * @return the (eventually renamed) name of the uploaded file | |
160 | * @throws InvalidCurrentFolderException | |
161 | * if the current folder name is invalid or does not exist | |
162 | * within the underlying backend | |
163 | * @throws WriteException | |
164 | * if the new file could not be created due to some reason | |
165 | */ | |
166 | public String fileUpload(final ResourceType type, | |
167 | final String currentFolder, final String fileName, | |
168 | final InputStream inputStream) | |
169 | throws InvalidCurrentFolderException, WriteException; | |
170 | ||
171 | } |