001 /* 002 * JBoss DNA (http://www.jboss.org/dna) 003 * See the COPYRIGHT.txt file distributed with this work for information 004 * regarding copyright ownership. Some portions may be licensed 005 * to Red Hat, Inc. under one or more contributor license agreements. 006 * See the AUTHORS.txt file in the distribution for a full listing of 007 * individual contributors. 008 * 009 * JBoss DNA is free software. Unless otherwise indicated, all code in JBoss DNA 010 * is licensed to you under the terms of the GNU Lesser General Public License as 011 * published by the Free Software Foundation; either version 2.1 of 012 * the License, or (at your option) any later version. 013 * 014 * JBoss DNA is distributed in the hope that it will be useful, 015 * but WITHOUT ANY WARRANTY; without even the implied warranty of 016 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 017 * Lesser General Public License for more details. 018 * 019 * You should have received a copy of the GNU Lesser General Public 020 * License along with this software; if not, write to the Free 021 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 022 * 02110-1301 USA, or see the FSF site: http://www.fsf.org. 023 */ 024 package org.jboss.dna.connector.filesystem; 025 026 import java.io.File; 027 import java.io.FilenameFilter; 028 import java.util.Set; 029 import java.util.concurrent.CopyOnWriteArrayList; 030 import java.util.concurrent.TimeUnit; 031 import javax.transaction.xa.XAResource; 032 import org.jboss.dna.graph.ExecutionContext; 033 import org.jboss.dna.graph.cache.CachePolicy; 034 import org.jboss.dna.graph.connector.RepositoryConnection; 035 import org.jboss.dna.graph.connector.RepositorySourceException; 036 import org.jboss.dna.graph.connector.RepositorySourceListener; 037 import org.jboss.dna.graph.request.Request; 038 import org.jboss.dna.graph.request.processor.RequestProcessor; 039 040 /** 041 * The {@link RepositoryConnection} implementation for the file system connector. The bulk of the work is performed by the 042 * {@link FileSystemRequestProcessor}. 043 * 044 * @author Randall Hauch 045 */ 046 public class FileSystemConnection implements RepositoryConnection { 047 048 private final String sourceName; 049 private final File defaultWorkspace; 050 private final CachePolicy cachePolicy; 051 private final Set<String> availableWorkspaceNames; 052 private final boolean creatingWorkspacesAllowed; 053 private final CopyOnWriteArrayList<RepositorySourceListener> listeners = new CopyOnWriteArrayList<RepositorySourceListener>(); 054 private final FilenameFilter filenameFilter; 055 private final boolean updatesAllowed; 056 057 FileSystemConnection( String sourceName, 058 File defaultWorkspace, 059 Set<String> availableWorkspaceNames, 060 boolean creatingWorkspacesAllowed, 061 CachePolicy cachePolicy, 062 FilenameFilter filenameFilter, 063 boolean updatesAllowed ) { 064 assert sourceName != null; 065 assert sourceName.trim().length() != 0; 066 assert availableWorkspaceNames != null; 067 this.sourceName = sourceName; 068 this.defaultWorkspace = defaultWorkspace; 069 this.availableWorkspaceNames = availableWorkspaceNames; 070 this.creatingWorkspacesAllowed = creatingWorkspacesAllowed; 071 this.cachePolicy = cachePolicy; 072 this.filenameFilter = filenameFilter; 073 this.updatesAllowed = updatesAllowed; 074 } 075 076 /** 077 * {@inheritDoc} 078 * 079 * @see org.jboss.dna.graph.connector.RepositoryConnection#getSourceName() 080 */ 081 public String getSourceName() { 082 return sourceName; 083 } 084 085 /** 086 * {@inheritDoc} 087 * 088 * @see org.jboss.dna.graph.connector.RepositoryConnection#getDefaultCachePolicy() 089 */ 090 public CachePolicy getDefaultCachePolicy() { 091 return cachePolicy; 092 } 093 094 /** 095 * {@inheritDoc} 096 * 097 * @see org.jboss.dna.graph.connector.RepositoryConnection#getXAResource() 098 */ 099 public XAResource getXAResource() { 100 return null; 101 } 102 103 /** 104 * {@inheritDoc} 105 * 106 * @see org.jboss.dna.graph.connector.RepositoryConnection#setListener(org.jboss.dna.graph.connector.RepositorySourceListener) 107 */ 108 public void setListener( RepositorySourceListener listener ) { 109 if (listener != null) { 110 listeners.addIfAbsent(listener); 111 } 112 } 113 114 /** 115 * {@inheritDoc} 116 * 117 * @see org.jboss.dna.graph.connector.RepositoryConnection#ping(long, java.util.concurrent.TimeUnit) 118 */ 119 public boolean ping( long time, 120 TimeUnit unit ) { 121 return true; 122 } 123 124 /** 125 * {@inheritDoc} 126 * 127 * @see org.jboss.dna.graph.connector.RepositoryConnection#execute(org.jboss.dna.graph.ExecutionContext, 128 * org.jboss.dna.graph.request.Request) 129 */ 130 public void execute( ExecutionContext context, 131 Request request ) throws RepositorySourceException { 132 RequestProcessor proc = new FileSystemRequestProcessor(sourceName, defaultWorkspace, availableWorkspaceNames, 133 creatingWorkspacesAllowed, context, filenameFilter, updatesAllowed); 134 try { 135 proc.process(request); 136 } finally { 137 proc.close(); 138 } 139 } 140 141 /** 142 * {@inheritDoc} 143 * 144 * @see org.jboss.dna.graph.connector.RepositoryConnection#close() 145 */ 146 public void close() { 147 } 148 }