/*
* 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.lenya.cms.repository;
import java.io.InputStream;
import java.util.Iterator;
import java.util.Vector;
import org.apache.avalon.framework.container.ContainerUtil;
import org.apache.avalon.framework.logger.AbstractLogEnabled;
import org.apache.avalon.framework.logger.Logger;
import org.apache.avalon.framework.service.ServiceManager;
import org.apache.excalibur.source.Source;
import org.apache.excalibur.source.SourceResolver;
import org.apache.lenya.cms.cocoon.source.SourceUtil;
import org.apache.lenya.cms.metadata.MetaData;
import org.apache.lenya.cms.metadata.MetaDataException;
import org.apache.lenya.cms.rc.CheckInEntry;
import org.apache.lenya.cms.rc.RCML;
import org.apache.lenya.cms.rc.RCMLEntry;
/**
* Revision implementation.
*/
public class SourceNodeRevision extends AbstractLogEnabled implements Revision {
private SourceNode node;
private int number;
private ServiceManager manager;
private long time = -1;
private String userId;
/**
* @param node The node.
* @param number The revision number.
* @param manager The service manager.
* @param logger The logger.
*/
public SourceNodeRevision(SourceNode node, int number, ServiceManager manager, Logger logger) {
this.node = node;
this.number = number;
this.manager = manager;
ContainerUtil.enableLogging(this, logger);
}
public long getTime() {
initialize();
return this.time;
}
protected void initialize() {
try {
if (this.time == -1) {
SourceNodeRCML rcml = (SourceNodeRCML) this.node.getRcml();
Vector entries = rcml.getEntries();
for (Iterator i = entries.iterator(); i.hasNext();) {
RCMLEntry entry = (RCMLEntry) i.next();
if (entry.getType() == RCML.ci
&& ((CheckInEntry) entry).getVersion() == this.number) {
this.time = entry.getTime();
this.userId = entry.getIdentity();
}
}
}
if (this.time == -1) {
throw new RuntimeException("No entry found for [" + this.node.getSourceURI()
+ "], revision [" + this.number + "]");
}
} catch (Exception e) {
throw new RuntimeException(e);
}
}
public InputStream getInputStream() {
Source source = null;
SourceResolver resolver = null;
try {
String sourceUri = getSourceURI();
resolver = (SourceResolver) this.manager.lookup(SourceResolver.ROLE);
source = resolver.resolveURI(sourceUri);
if (source.exists()) {
return source.getInputStream();
} else {
throw new RuntimeException("No check-in entry found for ["
+ this.node.getSourceURI() + "], revision [" + this.number + "]");
}
} catch (RuntimeException e) {
throw e;
} catch (Exception e) {
throw new RuntimeException(e);
} finally {
if (resolver != null) {
if (source != null) {
resolver.release(source);
}
this.manager.release(resolver);
}
}
}
public String getSourceURI() {
SourceNodeRCML rcml = (SourceNodeRCML) this.node.getRcml();
String sourceUri = rcml.getBackupSourceUri(this.node.getContentSource(), getTime());
return sourceUri;
}
public int getNumber() {
return this.number;
}
public MetaData getMetaData(String namespaceUri) throws MetaDataException {
return getMetaDataHandler().getMetaData(namespaceUri);
}
private SourceNodeMetaDataHandler metaDataHandler = null;
protected SourceNodeMetaDataHandler getMetaDataHandler() {
if (this.metaDataHandler == null) {
this.metaDataHandler = new SourceNodeMetaDataHandler(this.manager, getMetaSourceUri(), this);
}
return this.metaDataHandler;
}
protected String getMetaSourceUri() {
String realSourceUri = SourceWrapper.computeRealSourceUri(this.manager, this.node.getSession(),
this.node.getSourceURI(), getLogger());
return realSourceUri + ".meta." + getTime() + ".bak";
}
public String[] getMetaDataNamespaceUris() throws MetaDataException {
return getMetaDataHandler().getMetaDataNamespaceUris();
}
public boolean exists() throws RepositoryException {
try {
return SourceUtil.exists(getSourceURI(), this.manager);
} catch (Exception e) {
throw new RepositoryException(e);
}
}
public long getContentLength() throws RepositoryException {
try {
return SourceUtil.getContentLength(getSourceURI(), this.manager);
} catch (Exception e) {
throw new RepositoryException(e);
}
}
public long getLastModified() throws RepositoryException {
try {
return SourceUtil.getLastModified(getSourceURI(), this.manager);
} catch (Exception e) {
throw new RepositoryException(e);
}
}
public String getMimeType() throws RepositoryException {
try {
return SourceUtil.getMimeType(getSourceURI(), this.manager);
} catch (Exception e) {
throw new RepositoryException(e);
}
}
public String getUserId() {
initialize();
return this.userId;
}
}