/*
* 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.jackrabbit.server.io;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import org.apache.jackrabbit.webdav.DavResource;
import org.apache.tika.detect.Detector;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* <code>IOManagerImpl</code> represents the most simple <code>IOManager</code>
* implementation that provides a default constructor and does define any
* <code>IOHandler</code>s.
*/
public class IOManagerImpl implements IOManager {
private static Logger log = LoggerFactory.getLogger(IOManagerImpl.class);
/**
* Content type detector.
*/
private Detector detector;
private final List<IOHandler> ioHandlers = new ArrayList<IOHandler>();
/**
* Create a new <code>IOManager</code>.
* Note, that this manager does not define any <code>IOHandler</code>s by
* default. Use {@link #addIOHandler(IOHandler)} in order to populate the
* internal list of handlers that are called for <code>importContent</code> and
* <code>exportContent</code>.
*/
public IOManagerImpl() {
}
/**
* @see IOManager#addIOHandler(IOHandler)
*/
public void addIOHandler(IOHandler ioHandler) {
if (ioHandler == null) {
throw new IllegalArgumentException("'null' is not a valid IOHandler.");
}
ioHandler.setIOManager(this);
ioHandlers.add(ioHandler);
}
/**
* @see IOManager#getIOHandlers()
*/
public IOHandler[] getIOHandlers() {
return ioHandlers.toArray(new IOHandler[ioHandlers.size()]);
}
/**
* Return the configured type detector.
*
* @return content type detector
*/
public Detector getDetector() {
return detector;
}
/**
* Sets the configured type detector.
*
* @param detector content type detector
*/
public void setDetector(Detector detector) {
this.detector = detector;
}
/**
* @see IOManager#importContent(ImportContext, boolean)
*/
public boolean importContent(ImportContext context, boolean isCollection) throws IOException {
boolean success = false;
if (context != null) {
IOListener ioListener = context.getIOListener();
if (ioListener == null) {
ioListener = new DefaultIOListener(log);
}
IOHandler[] ioHandlers = getIOHandlers();
for (int i = 0; i < ioHandlers.length && !success; i++) {
IOHandler ioh = ioHandlers[i];
if (ioh.canImport(context, isCollection)) {
ioListener.onBegin(ioh, context);
success = ioh.importContent(context, isCollection);
ioListener.onEnd(ioh, context, success);
}
}
context.informCompleted(success);
}
return success;
}
/**
* @see IOManager#importContent(ImportContext, DavResource)
*/
public boolean importContent(ImportContext context, DavResource resource) throws IOException {
boolean success = false;
if (context != null && resource != null) {
IOListener ioListener = context.getIOListener();
if (ioListener == null) {
ioListener = new DefaultIOListener(log);
}
IOHandler[] ioHandlers = getIOHandlers();
for (int i = 0; i < ioHandlers.length && !success; i++) {
IOHandler ioh = ioHandlers[i];
if (ioh.canImport(context, resource)) {
ioListener.onBegin(ioh, context);
success = ioh.importContent(context, resource);
ioListener.onEnd(ioh, context, success);
}
}
context.informCompleted(success);
}
return success;
}
/**
* @see IOManager#exportContent(ExportContext, boolean)
*/
public boolean exportContent(ExportContext context, boolean isCollection) throws IOException {
boolean success = false;
if (context != null) {
IOListener ioListener = context.getIOListener();
if (ioListener == null) {
ioListener = new DefaultIOListener(log);
}
IOHandler[] ioHandlers = getIOHandlers();
for (int i = 0; i < ioHandlers.length && !success; i++) {
IOHandler ioh = ioHandlers[i];
if (ioh.canExport(context, isCollection)) {
ioListener.onBegin(ioh, context);
success = ioh.exportContent(context, isCollection);
ioListener.onEnd(ioh, context, success);
}
}
context.informCompleted(success);
}
return success;
}
/**
* @see IOManager#exportContent(ExportContext, DavResource)
*/
public boolean exportContent(ExportContext context, DavResource resource) throws IOException {
boolean success = false;
if (context != null && resource != null) {
IOListener ioListener = context.getIOListener();
if (ioListener == null) {
ioListener = new DefaultIOListener(log);
}
IOHandler[] ioHandlers = getIOHandlers();
for (int i = 0; i < ioHandlers.length && !success; i++) {
IOHandler ioh = ioHandlers[i];
if (ioh.canExport(context, resource)) {
ioListener.onBegin(ioh, context);
success = ioh.exportContent(context, resource);
ioListener.onEnd(ioh, context, success);
}
}
context.informCompleted(success);
}
return success;
}
}