Java tutorial
/******************************************************************************* * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF licenses this file * to you under the Apache License, Version 2.0 (the * "License"); you may not use this file except in compliance * with the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, * software distributed under the License is distributed on an * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY * KIND, either express or implied. See the License for the * specific language governing permissions and limitations * under the License. *******************************************************************************/ package org.ofbiz.commons.vfs.ofbiz; import java.net.URL; import java.util.Collection; import org.apache.commons.vfs.FileObject; import org.apache.commons.vfs.FileSystemException; import org.apache.commons.vfs.FileSystemOptions; import org.apache.commons.vfs.provider.AbstractFileProvider; import org.apache.commons.vfs.provider.local.DefaultLocalFileProvider; import org.ofbiz.base.location.FlexibleLocation; import org.webslinger.commons.vfs.VFSUtil; public class OfbizComponentProvider extends AbstractFileProvider { public Collection getCapabilities() { return DefaultLocalFileProvider.capabilities; } public FileObject findFile(FileObject base, String name, FileSystemOptions properties) throws FileSystemException { try { //name = name.replaceAll("^ofbiz-component://", ""); int nameLength = name.length(); int componentNameStart = 16; while (componentNameStart < nameLength && name.charAt(componentNameStart) == '/') componentNameStart++; if (componentNameStart == nameLength) throw new IllegalArgumentException("Invalid name(" + name + ")"); int componentNameEnd = componentNameStart; while (componentNameEnd < nameLength && name.charAt(componentNameEnd) != '/') componentNameEnd++; if (componentNameEnd == nameLength) throw new IllegalArgumentException("Invalid name(" + name + ")"); int restStart = componentNameEnd; while (restStart < nameLength && name.charAt(restStart) == '/') restStart++; if (restStart == nameLength) throw new IllegalArgumentException("Invalid name(" + name + ")"); String componentName = name.substring(componentNameStart, componentNameEnd); URL location = FlexibleLocation.resolveLocation("component://" + componentName + "/."); FileObject ofbizBase = getContext().resolveFile(location.toString(), properties); return VFSUtil.toFileObject(ofbizBase.getFileSystem().getFileSystemManager(), ofbizBase.resolveFile(name.substring(restStart)).getURL().toString(), properties); } catch (Exception e) { FileSystemException fse = new FileSystemException(e.getMessage(), null, e); fse.initCause(e); throw fse; } } }