| /* |
| * 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.apache.geronimo.gshell.xstore; |
| |
| import org.apache.commons.vfs.FileObject; |
| import org.apache.commons.vfs.FileSystem; |
| import org.apache.commons.vfs.FileSystemException; |
| import org.apache.geronimo.gshell.marshal.Marshaller; |
| import org.apache.geronimo.gshell.marshal.MarshallerSupport; |
| import org.apache.geronimo.gshell.vfs.FileSystemAccess; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| /** |
| * {@link XStore} component. |
| * |
| * @version $Rev$ $Date$ |
| */ |
| public class XStoreImpl |
| implements XStore |
| { |
| private final Logger log = LoggerFactory.getLogger(getClass()); |
| |
| private final FileSystemAccess fileSystemAccess; |
| |
| private String rootUri; |
| |
| private FileSystem fileSystem; |
| |
| public XStoreImpl(final FileSystemAccess fileSystemAccess) { |
| assert fileSystemAccess != null; |
| this.fileSystemAccess = fileSystemAccess; |
| } |
| |
| public String getRootUri() { |
| if (rootUri == null) { |
| throw new IllegalStateException("Missing property: rootUri"); |
| } |
| return rootUri; |
| } |
| |
| public void setRootUri(final String rootUri) { |
| this.rootUri = rootUri; |
| } |
| |
| private FileSystem getFileSystem() { |
| if (fileSystem == null) { |
| try { |
| assert fileSystemAccess != null; |
| String uri = getRootUri(); |
| |
| FileObject root = fileSystemAccess.resolveFile(null, uri); |
| log.debug("Root: {}", uri); |
| |
| FileObject file = fileSystemAccess.getManager().createVirtualFileSystem(root); |
| fileSystem = file.getFileSystem(); |
| log.debug("File system: {}", fileSystem); |
| } |
| catch (FileSystemException e) { |
| throw new XStoreException(e); |
| } |
| } |
| |
| return fileSystem; |
| } |
| |
| public XStoreRecord resolveRecord(final String path) { |
| assert path != null; |
| |
| final XStoreImpl prev = XStoreHolder.get(); |
| XStoreHolder.set(this); |
| |
| try { |
| FileObject file = getFileSystem().resolveFile(path); |
| return new XStoreRecordImpl(this, file); |
| } |
| catch (FileSystemException e) { |
| throw new XStoreException(e); |
| } |
| finally { |
| if (prev != null) { |
| XStoreHolder.set(prev); |
| } |
| } |
| } |
| |
| public XStorePointer createPointer(final String path) { |
| assert path != null; |
| |
| return new XStorePointerImpl(this, path); |
| } |
| |
| private final Map<Class,Marshaller> marshallers = new HashMap<Class,Marshaller>(); |
| |
| @SuppressWarnings({"unchecked"}) |
| <T> Marshaller<T> getMarshaller(final Class<T> type) { |
| assert type != null; |
| |
| Marshaller<T> marshaller = marshallers.get(type); |
| if (marshaller == null) { |
| marshaller = new MarshallerSupport<T>(type); |
| marshallers.put(type, marshaller); |
| } |
| |
| return marshaller; |
| } |
| } |