| Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
| Connector |
|
| 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 | } |