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Refactoring of the pseudo file/desktop action code to allow use by AVM and repo filesystem drivers.
Added virtualization view to the AVM filesystem driver that shows all stores and versions using a single shared filesystem. git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/BRANCHES/WCM-DEV2/root@4443 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261
This commit is contained in:
Gary Spencer
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/*
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* Copyright (C) 2005-2006 Alfresco, Inc.
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*
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* Licensed under the Mozilla Public License version 1.1
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* with a permitted attribution clause. You may obtain a
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* copy of the License at
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*
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* http://www.alfresco.org/legal/license.txt
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*
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
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* either express or implied. See the License for the specific
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* language governing permissions and limitations under the
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* License.
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*/
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package org.alfresco.filesys.server.pseudo;
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import java.util.Enumeration;
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import org.alfresco.filesys.alfresco.DesktopAction;
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import org.alfresco.filesys.alfresco.DesktopActionTable;
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import org.alfresco.filesys.server.SrvSession;
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import org.alfresco.filesys.server.filesys.FileName;
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import org.alfresco.filesys.server.filesys.TreeConnection;
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import org.alfresco.filesys.server.pseudo.MemoryPseudoFile;
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import org.alfresco.filesys.server.pseudo.PseudoFile;
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import org.alfresco.filesys.server.pseudo.PseudoFileInterface;
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import org.alfresco.filesys.server.state.FileState;
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import org.alfresco.filesys.smb.server.SMBSrvSession;
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import org.alfresco.filesys.smb.server.repo.ContentContext;
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import org.apache.commons.logging.Log;
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import org.apache.commons.logging.LogFactory;
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/**
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* Alfresco Filesystem Driver Pseudo File Implementation
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*
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* <p>Pseudo file implementation for the Alfresco filesystem drivers.
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*
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* @author gkspencer
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*/
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public class PseudoFileImpl implements PseudoFileInterface
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{
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// Logging
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private static final Log logger = LogFactory.getLog(PseudoFileImpl.class);
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/**
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* Check if the specified path refers to a pseudo file
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*
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* @param sess SrvSession
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* @param tree TreeConnection
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* @param path String
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* @return boolean
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*/
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public boolean isPseudoFile(SrvSession sess, TreeConnection tree, String path)
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{
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// Check if the path is for a pseudo file
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ContentContext ctx = (ContentContext) tree.getContext();
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boolean isPseudo = false;
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String[] paths = FileName.splitPath( path);
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FileState fstate = getStateForPath( ctx, paths[0]);
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if ( fstate != null && fstate.hasPseudoFiles())
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{
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// Check if there is a matching pseudo file
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PseudoFile pfile = fstate.getPseudoFileList().findFile( paths[1], false);
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if ( pfile != null)
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isPseudo = true;
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}
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else
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{
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// Check if the file name matches a pseudo-file name in the desktop actions list
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if ( ctx.hasDesktopActions())
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{
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DesktopActionTable actions = ctx.getDesktopActions();
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if ( actions.getActionViaPseudoName( paths[1]) != null)
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isPseudo = true;
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}
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// Check if the URL file is enabled
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if ( isPseudo == false && ctx.hasURLFile())
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{
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// Check if it is the URL file name
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if ( ctx.getURLFileName().equals( paths[1]))
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isPseudo = true;
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}
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}
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// Return the pseudo file status
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return isPseudo;
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}
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/**
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* Return the pseudo file for the specified path, or null if the path is not a pseudo file
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*
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* @param sess SrvSession
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* @param tree TreeConnection
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* @param path String
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* @return PseudoFile
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*/
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public PseudoFile getPseudoFile(SrvSession sess, TreeConnection tree, String path)
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{
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// Check if the path is for a pseudo file
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ContentContext ctx = (ContentContext) tree.getContext();
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String[] paths = FileName.splitPath( path);
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FileState fstate = getStateForPath( ctx, paths[0]);
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if ( fstate != null && fstate.hasPseudoFiles())
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{
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// Check if there is a matching pseudo file
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PseudoFile pfile = fstate.getPseudoFileList().findFile( paths[1], false);
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if ( pfile != null)
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return pfile;
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}
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// Not a pseudo file
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return null;
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}
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/**
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* Add pseudo files to a folder so that they appear in a folder search
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*
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* @param sess SrvSession
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* @param tree TreeConnection
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* @param path String
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* @return int
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*/
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public int addPseudoFilesToFolder(SrvSession sess, TreeConnection tree, String path)
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{
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// Access the device context
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int pseudoCnt = 0;
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ContentContext ctx = (ContentContext) tree.getContext();
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FileState fstate = getStateForPath( ctx, path);
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// Check if pseudo files have already been added for this folder
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if ( fstate.hasPseudoFiles())
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return 0;
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// Check if this is a CIFS session
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boolean isCIFS = sess instanceof SMBSrvSession;
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// Add the desktop action pseudo files
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if ( isCIFS && ctx.numberOfDesktopActions() > 0)
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{
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// If the file state is null create a file state for the path
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if ( fstate == null)
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ctx.getStateTable().findFileState( path, true, true);
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// Add the desktop action pseudo files
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DesktopActionTable actions = ctx.getDesktopActions();
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Enumeration<String> actionNames = actions.enumerateActionNames();
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while(actionNames.hasMoreElements())
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{
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// Get the current desktop action
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String name = actionNames.nextElement();
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DesktopAction action = actions.getAction(name);
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// Add the pseudo file for the desktop action
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if ( action.hasPseudoFile())
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{
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fstate.addPseudoFile( action.getPseudoFile());
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pseudoCnt++;
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// DEBUG
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if ( logger.isInfoEnabled())
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logger.info("Added desktop action " + action.getName() + " for " + path);
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}
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}
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}
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// Add the URL link pseudo file, if enabled
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if ( isCIFS && ctx.hasURLFile())
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{
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// Make sure the state has the associated node details
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if ( fstate.getNodeRef() != null)
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{
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// Build the URL file data
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StringBuilder urlStr = new StringBuilder();
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urlStr.append("[InternetShortcut]\r\n");
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urlStr.append("URL=");
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urlStr.append(ctx.getURLPrefix());
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urlStr.append("navigate/browse/workspace/SpacesStore/");
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urlStr.append( fstate.getNodeRef().getId());
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urlStr.append("\r\n");
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// Create the in memory pseudo file for the URL link
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byte[] urlData = urlStr.toString().getBytes();
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MemoryPseudoFile urlFile = new MemoryPseudoFile( ctx.getURLFileName(), urlData);
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fstate.addPseudoFile( urlFile);
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// Update the count of files added
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pseudoCnt++;
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// DEBUG
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if ( logger.isInfoEnabled())
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logger.info("Added URL link pseudo file for " + path);
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}
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}
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// Return the count of pseudo files added
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return pseudoCnt;
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}
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/**
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* Delete a pseudo file
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*
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* @param sess SrvSession
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* @param tree TreeConnection
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* @param path String
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*/
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public void deletePseudoFile(SrvSession sess, TreeConnection tree, String path)
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{
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// Access the device context
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ContentContext ctx = (ContentContext) tree.getContext();
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// Get the file state for the parent folder
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String[] paths = FileName.splitPath( path);
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FileState fstate = getStateForPath( ctx, paths[0]);
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// Check if the folder has any pseudo files
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if ( fstate == null || fstate.hasPseudoFiles() == false)
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return;
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// Remove the pseudo file from the list
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fstate.getPseudoFileList().removeFile( paths[1], false);
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}
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/**
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* Return the file state for the specified path
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*
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* @param ctx ContentContext
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* @param path String
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* @return FileState
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*/
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private final FileState getStateForPath(ContentContext ctx, String path)
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{
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// Check if there is a cached state for the path
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FileState fstate = null;
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if ( ctx.hasStateTable())
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{
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// Get the file state for a file/folder
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fstate = ctx.getStateTable().findFileState(path);
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}
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// Return the file state
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return fstate;
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}
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}
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