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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
351
source/java/org/alfresco/filesys/alfresco/AlfrescoContext.java
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351
source/java/org/alfresco/filesys/alfresco/AlfrescoContext.java
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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.alfresco;
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import java.util.Enumeration;
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import org.alfresco.filesys.server.filesys.*;
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import org.alfresco.filesys.server.pseudo.PseudoFileImpl;
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import org.alfresco.filesys.server.pseudo.PseudoFileInterface;
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import org.alfresco.filesys.server.state.FileStateReaper;
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import org.alfresco.filesys.server.state.FileStateTable;
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/**
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* Alfresco Filesystem Context Class
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*
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* <p>Contains per filesystem context.
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*
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* @author GKSpencer
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*/
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public abstract class AlfrescoContext extends DiskDeviceContext
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{
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// File state table and associated file state reaper
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private FileStateTable m_stateTable;
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private FileStateReaper m_stateReaper;
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// URL pseudo file web path prefix (server/port/webapp) and link file name
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private String m_urlPathPrefix;
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private String m_urlFileName;
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// Pseudo file interface
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private PseudoFileInterface m_pseudoFileInterface;
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// Desktop actions
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private DesktopActionTable m_desktopActions;
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// I/O control handler
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private IOControlHandler m_ioHandler;
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/**
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* Class constructor
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*
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* @param filesysName String
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* @param devName String
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*/
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public AlfrescoContext(String filesysName, String devName)
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{
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super(filesysName, devName);
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// Default the filesystem to look like an 80Gb sized disk with 90% free space
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setDiskInformation(new SrvDiskInfo(2560000, 64, 512, 2304000));
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// Set parameters
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setFilesystemAttributes(FileSystem.CasePreservedNames + FileSystem.UnicodeOnDisk +
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FileSystem.CaseSensitiveSearch);
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}
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/**
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* Return the filesystem type, either FileSystem.TypeFAT or FileSystem.TypeNTFS.
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*
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* @return String
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*/
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public String getFilesystemType()
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{
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return FileSystem.TypeNTFS;
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}
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/**
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* Determine if the file state table is enabled
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*
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* @return boolean
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*/
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public final boolean hasStateTable()
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{
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return m_stateTable != null ? true : false;
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}
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/**
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* Return the file state table
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*
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* @return FileStateTable
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*/
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public final FileStateTable getStateTable()
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{
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return m_stateTable;
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}
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/**
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* Enable/disable the file state table
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*
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* @param ena boolean
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* @param stateReaper FileStateReaper
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*/
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public final void enableStateTable(boolean ena, FileStateReaper stateReaper)
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{
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if ( ena == false)
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{
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// Remove the state table from the reaper
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stateReaper.removeStateTable( getFilesystemName());
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m_stateTable = null;
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}
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else if ( m_stateTable == null)
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{
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// Create the file state table
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m_stateTable = new FileStateTable();
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// Register with the file state reaper
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stateReaper.addStateTable( getFilesystemName(), m_stateTable);
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}
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// Save the reaper, for deregistering when the filesystem is closed
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m_stateReaper = stateReaper;
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}
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/**
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* Determine if the pseudo file interface is enabled
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*
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* @return boolean
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*/
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public final boolean hasPseudoFileInterface()
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{
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return m_pseudoFileInterface != null ? true : false;
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}
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/**
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* Return the pseudo file interface
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*
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* @return PseudoFileInterface
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*/
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public final PseudoFileInterface getPseudoFileInterface()
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{
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return m_pseudoFileInterface;
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}
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/**
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* Enable the pseudo file interface for this filesystem
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*/
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public final void enabledPseudoFileInterface()
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{
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if ( m_pseudoFileInterface == null)
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m_pseudoFileInterface = new PseudoFileImpl();
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}
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/**
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* Determine if there are desktop actins configured
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*
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* @return boolean
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*/
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public final boolean hasDesktopActions()
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{
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return m_desktopActions != null ? true : false;
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}
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/**
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* Return the desktop actions table
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*
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* @return DesktopActionTable
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*/
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public final DesktopActionTable getDesktopActions()
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{
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return m_desktopActions;
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}
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/**
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* Return the count of desktop actions
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*
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* @return int
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*/
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public final int numberOfDesktopActions()
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{
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return m_desktopActions != null ? m_desktopActions.numberOfActions() : 0;
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}
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/**
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* Add a desktop action
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*
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* @param action DesktopAction
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* @return boolean
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*/
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public final boolean addDesktopAction(DesktopAction action)
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{
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// Check if the desktop actions table has been created
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if ( m_desktopActions == null)
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{
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m_desktopActions = new DesktopActionTable();
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// Enable pseudo files
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enabledPseudoFileInterface();
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}
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// Add the action
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return m_desktopActions.addAction(action);
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}
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/**
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* Determine if custom I/O control handling is enabled for this filesystem
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*
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* @return boolean
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*/
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public final boolean hasIOHandler()
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{
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return m_ioHandler != null ? true : false;
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}
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/**
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* Return the custom I/O control handler
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*
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* @return IOControlHandler
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*/
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public final IOControlHandler getIOHandler()
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{
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return m_ioHandler;
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}
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/**
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* Determine if the URL pseudo file is enabled
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*
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* @return boolean
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*/
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public final boolean hasURLFile()
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{
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if ( m_urlPathPrefix != null && m_urlFileName != null)
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return true;
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return false;
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}
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/**
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* Return the URL pseudo file path prefix
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*
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* @return String
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*/
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public final String getURLPrefix()
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{
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return m_urlPathPrefix;
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}
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/**
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* Return the URL pseudo file name
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*
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* @return String
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*/
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public final String getURLFileName()
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{
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return m_urlFileName;
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}
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/**
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* Set the URL path prefix
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*
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* @param urlPrefix String
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*/
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public final void setURLPrefix(String urlPrefix)
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{
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m_urlPathPrefix = urlPrefix;
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if ( urlPrefix != null)
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enabledPseudoFileInterface();
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}
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/**
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* Set the URL pseudo file name
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*
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* @param urlFileName String
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*/
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public final void setURLFileName(String urlFileName)
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{
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m_urlFileName = urlFileName;
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if ( urlFileName != null)
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enabledPseudoFileInterface();
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}
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/**
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* Set the desktop actions
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*
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* @param desktopActions DesktopActionTable
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* @param filesysDriver DiskInterface
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*/
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public final void setDesktopActions(DesktopActionTable desktopActions, DiskInterface filesysDriver)
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{
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// Enumerate the desktop actions and add to this filesystem
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Enumeration<String> names = desktopActions.enumerateActionNames();
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while ( names.hasMoreElements())
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{
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addDesktopAction( desktopActions.getAction(names.nextElement()));
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}
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// If there are desktop actions then create the custom I/O control handler
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if ( numberOfDesktopActions() > 0)
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{
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// Create the custom I/O control handler
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m_ioHandler = createIOHandler( filesysDriver);
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if ( m_ioHandler != null)
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m_ioHandler.initialize(( AlfrescoDiskDriver) filesysDriver, this);
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}
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}
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/**
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* Create the I/O control handler for this filesystem type
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*
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* @param filesysDriver DiskInterface
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* @return IOControlHandler
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*/
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protected abstract IOControlHandler createIOHandler( DiskInterface filesysDriver);
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/**
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* Close the filesystem context
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*/
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public void CloseContext() {
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// Deregister the file state table from the reaper
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if ( m_stateTable != null)
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enableStateTable( false, m_stateReaper);
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// Call the base class
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super.CloseContext();
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}
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}
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