org.mycore.common.content.MCRURLContent Maven / Gradle / Ivy
/*
* This file is part of *** M y C o R e ***
* See http://www.mycore.de/ for details.
*
* MyCoRe is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* MyCoRe is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with MyCoRe. If not, see .
*/
package org.mycore.common.content;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.net.URLConnection;
import javax.xml.transform.Source;
import javax.xml.transform.stream.StreamSource;
import org.apache.commons.io.FilenameUtils;
import org.xml.sax.InputSource;
/**
* @author Thomas Scheffler (yagee)
*
*/
public class MCRURLContent extends MCRContent {
private URL url;
public MCRURLContent(URL url) {
super();
this.url = url;
this.setSystemId(url.toString());
String fileName = url.getPath();
if (fileName.endsWith("/")) {
fileName = FilenameUtils.getPathNoEndSeparator(fileName); //removes final '/';
}
setName(FilenameUtils.getName(fileName));
}
@Override
public InputStream getInputStream() throws IOException {
return url.openStream();
}
@Override
public Source getSource() throws IOException {
return new StreamSource(getSystemId());
}
@Override
public InputSource getInputSource() throws IOException {
return new InputSource(getSystemId());
}
@Override
public long length() throws IOException {
return url.openConnection().getContentLengthLong();
}
@Override
public long lastModified() throws IOException {
return url.openConnection().getLastModified();
}
@Override
public String getETag() throws IOException {
URLConnection openConnection = url.openConnection();
openConnection.connect();
String eTag = openConnection.getHeaderField("ETag");
if (eTag != null) {
return eTag;
}
long lastModified = openConnection.getLastModified();
long length = openConnection.getContentLengthLong();
eTag = getSimpleWeakETag(url.toString(), length, lastModified);
return eTag == null ? null : eTag.substring(2);
}
@Override
public String getMimeType() throws IOException {
return super.getMimeType() == null ? url.openConnection().getContentType() : super.getMimeType();
}
}