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6478d72321
Restructured the file server code packages. git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@7757 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261
439 lines
14 KiB
Java
439 lines
14 KiB
Java
/*
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* Copyright (C) 2005-2007 Alfresco Software Limited.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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* As a special exception to the terms and conditions of version 2.0 of
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* the GPL, you may redistribute this Program in connection with Free/Libre
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* and Open Source Software ("FLOSS") applications as described in Alfresco's
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* FLOSS exception. You should have recieved a copy of the text describing
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* the FLOSS exception, and it is also available here:
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* http://www.alfresco.com/legal/licensing"
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*/
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package org.alfresco.filesys.repo;
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import java.io.FileNotFoundException;
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import java.util.List;
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import org.alfresco.jlan.server.filesys.FileAttribute;
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import org.alfresco.jlan.server.filesys.FileInfo;
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import org.alfresco.jlan.server.filesys.FileName;
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import org.alfresco.jlan.server.filesys.FileType;
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import org.alfresco.jlan.server.filesys.SearchContext;
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import org.alfresco.jlan.server.filesys.pseudo.PseudoFile;
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import org.alfresco.jlan.server.filesys.pseudo.PseudoFileList;
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import org.alfresco.service.cmr.repository.NodeRef;
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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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* Wrapper for simple XPath searche against the node service. The search is performed statically
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* outside the context instance itself - this class merely maintains the state of the search
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* results across client connections.
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*
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* @author Derek Hulley
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*/
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public class ContentSearchContext extends SearchContext
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{
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// Debug logging
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private static final Log logger = LogFactory.getLog(ContentSearchContext.class);
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// Constants
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//
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// Link file size, actual size will be set if/when the link is opened
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public final static int LinkFileSize = 512;
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// List of nodes returned from the folder search
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private CifsHelper cifsHelper;
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private List<NodeRef> results;
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private int index = -1;
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// Pseudo file list blended into a wildcard folder search
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private PseudoFileList pseudoList;
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private boolean donePseudoFiles = false;
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// Resume id
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private int resumeId;
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// Relative path being searched
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private String m_relPath;
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/**
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* Class constructor
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*
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* @param cifsHelper Filesystem helper class
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* @param results List of file/folder nodes that match the search pattern
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* @param searchStr Search path
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* @param pseudoList List of pseudo files to be blended into the returned list of files
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* @param relPath Relative path being searched
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*/
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protected ContentSearchContext(
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CifsHelper cifsHelper,
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List<NodeRef> results,
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String searchStr,
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PseudoFileList pseudoList,
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String relPath)
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{
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super();
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super.setSearchString(searchStr);
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this.cifsHelper = cifsHelper;
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this.results = results;
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this.pseudoList = pseudoList;
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m_relPath = relPath;
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if ( m_relPath != null && m_relPath.endsWith( FileName.DOS_SEPERATOR_STR) == false)
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m_relPath = m_relPath + FileName.DOS_SEPERATOR_STR;
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}
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/**
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* Return the search as a string
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*
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* @return String
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*/
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public String toString()
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{
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StringBuilder sb = new StringBuilder(60);
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sb.append("ContentSearchContext")
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.append("[ searchStr=").append(getSearchString())
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.append(", resultCount=").append(results.size())
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.append("]");
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return sb.toString();
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}
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/**
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* Return the resume id for the current file/directory in the search.
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*
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* @return int
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*/
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public int getResumeId()
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{
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return resumeId;
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}
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/**
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* Determine if there are more files for the active search.
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*
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* @return boolean
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*/
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public boolean hasMoreFiles()
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{
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// Pseudo files are returned first
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if ( donePseudoFiles == false && pseudoList != null && index < (pseudoList.numberOfFiles() - 1))
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return true;
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return index < (results.size() - 1);
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}
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/**
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* Return file information for the next file in the active search. Returns false if the search
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* is complete.
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*
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* @param info FileInfo to return the file information.
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* @return true if the file information is valid, else false
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*/
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public boolean nextFileInfo(FileInfo info)
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{
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// Check if there is anything else to return
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if (!hasMoreFiles())
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return false;
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// Increment the index and resume id
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index++;
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resumeId++;
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// If the pseudo file list is valid return the pseudo files first
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if ( donePseudoFiles == false && pseudoList != null)
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{
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if ( index < pseudoList.numberOfFiles())
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{
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PseudoFile pfile = pseudoList.getFileAt( index);
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if ( pfile != null)
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{
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// Get the file information for the pseudo file
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FileInfo pinfo = pfile.getFileInfo();
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// Copy the file information to the callers file info
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info.copyFrom( pinfo);
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// Generate a file id for the current file
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if ( info != null && info.getFileId() == -1)
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{
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StringBuilder pathStr = new StringBuilder( m_relPath);
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pathStr.append ( info.getFileName());
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info.setFileId( pathStr.toString().hashCode());
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}
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// Check if we have finished with the pseudo file list, switch to the normal file list
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if ( index == (pseudoList.numberOfFiles() - 1))
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{
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// Switch to the main file list
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donePseudoFiles = true;
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index = -1;
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}
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// Indicate that the file information is valid
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return true;
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}
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}
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}
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// Get the next file info from the node search
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NodeRef nextNodeRef = results.get(index);
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try
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{
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// Get the file information and copy across to the callers file info
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ContentFileInfo nextInfo = cifsHelper.getFileInformation(nextNodeRef, "");
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info.copyFrom(nextInfo);
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// Generate a file id for the current file
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StringBuilder pathStr = new StringBuilder( m_relPath);
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pathStr.append ( info.getFileName());
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info.setFileId( pathStr.toString().hashCode());
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// Check if this is a link node
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if ( nextInfo.isLinkNode())
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{
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// Set a dummy file size for the link data that will be generated if/when the file is opened
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info.setFileSize( LinkFileSize);
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// Make the link read-only
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if ( info.isReadOnly() == false)
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info.setFileAttributes( info.getFileAttributes() + FileAttribute.ReadOnly);
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// Set the file type to indicate a symbolic link
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info.setFileType( FileType.SymbolicLink);
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}
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else
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info.setFileType( FileType.RegularFile);
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// Indicate that the file information is valid
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return true;
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}
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catch (FileNotFoundException e)
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{
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}
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// File information is not valid
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return false;
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}
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/**
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* Return the file name of the next file in the active search. Returns null is the search is
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* complete.
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*
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* @return String
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*/
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public String nextFileName()
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{
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// Check if there is anything else to return
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if (!hasMoreFiles())
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return null;
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// Increment the index and resume id
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index++;
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resumeId++;
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// If the pseudo file list is valid return the pseudo files first
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if ( donePseudoFiles == false && pseudoList != null)
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{
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if ( index < pseudoList.numberOfFiles())
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{
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PseudoFile pfile = pseudoList.getFileAt( index);
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if ( pfile != null)
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{
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// Get the file information for the pseudo file
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FileInfo pinfo = pfile.getFileInfo();
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// Copy the file information to the callers file info
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return pinfo.getFileName();
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}
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}
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else
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{
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// Switch to the main file list
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donePseudoFiles = true;
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index = -1;
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if ( results == null || results.size() == 0)
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return null;
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}
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}
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// Get the next file info from the node search
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NodeRef nextNodeRef = results.get(index);
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try
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{
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// Get the file information and copy across to the callers file info
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FileInfo nextInfo = cifsHelper.getFileInformation(nextNodeRef, "");
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// Indicate that the file information is valid
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return nextInfo.getFileName();
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}
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catch (FileNotFoundException e)
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{
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}
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// No more files
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return null;
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}
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/**
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* Restart a search at the specified resume point.
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*
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* @param resumeId Resume point id.
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* @return true if the search can be restarted, else false.
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*/
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public boolean restartAt(FileInfo info)
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{
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// Check if the resume point is in the pseudo file list
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int resId = 0;
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if (pseudoList != null)
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{
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while ( resId < pseudoList.numberOfFiles())
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{
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// Check if the current pseudo file matches the resume file name
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PseudoFile pfile = pseudoList.getFileAt(resId);
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if ( pfile.getFileName().equals(info.getFileName()))
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{
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// Found the restart point
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donePseudoFiles = false;
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index = resId - 1;
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return true;
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}
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else
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resId++;
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}
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}
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// Check if the resume file is in the main file list
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if ( results != null)
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{
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int idx = 0;
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while ( idx < results.size())
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{
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// Get the file name for the node
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String fname = cifsHelper.getFileName( results.get( idx));
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if ( fname != null && fname.equals( info.getFileName()))
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{
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index = idx - 1;
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resumeId = resId - 1;
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donePseudoFiles = true;
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return true;
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}
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else
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{
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idx++;
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resId++;
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}
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}
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}
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// Failed to find resume file
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return false;
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}
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/**
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* Restart the current search at the specified file.
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*
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* @param info File to restart the search at.
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* @return true if the search can be restarted, else false.
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*/
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public boolean restartAt(int resumeId)
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{
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// Check if the resume point is in the pseudo file list
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if (pseudoList != null)
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{
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if ( resumeId < pseudoList.numberOfFiles())
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{
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// Resume at a pseudo file
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index = resumeId;
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donePseudoFiles = false;
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return true;
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}
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else
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{
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// Adjust the resume id so that it is an index into the main file list
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resumeId -= pseudoList.numberOfFiles();
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}
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}
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// Check if the resume point is valid
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if ( results != null && resumeId < results.size())
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{
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index = resumeId;
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donePseudoFiles = true;
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return true;
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}
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// Invalid resume point
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return false;
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}
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}
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