/*
* (C) Copyright 2006-2011 Nuxeo SA (http://nuxeo.com/) and others.
*
* Licensed 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.
*
* Contributors:
* Florent Guillaume
*/
package org.nuxeo.ecm.core.blob.binary;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.transform.OutputKeys;
import javax.xml.transform.Result;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
import org.nuxeo.common.xmap.annotation.XNode;
import org.nuxeo.common.xmap.annotation.XObject;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
/**
* Descriptor for the configuration of an on-disk binaries storage.
*/
@XObject(value = BinaryManagerRootDescriptor.BINARY_STORE)
public class BinaryManagerRootDescriptor {
public static final String BINARY_STORE = "binary-store";
public static final String DIGEST = "digest";
public static final String DEPTH = "depth";
/**
* The digest, for instance {@code MD5} or {@code SHA-256}.
*/
@XNode(DIGEST)
public String digest;
/**
* The number of intermediate sub-directories to use.
*/
@XNode(DEPTH)
public int depth;
/**
* Writes the descriptor to an XML file.
*
* @param out the output file to use
* @throws IOException
*/
public void write(File out) throws IOException {
DocumentBuilder parser;
try {
parser = DocumentBuilderFactory.newInstance().newDocumentBuilder();
} catch (ParserConfigurationException e) {
throw (IOException) new IOException().initCause(e);
}
Document doc = parser.newDocument();
Element root = doc.createElement(BINARY_STORE);
doc.appendChild(root);
root.appendChild(doc.createElement(DIGEST)).appendChild(doc.createTextNode(digest));
root.appendChild(doc.createElement(DEPTH)).appendChild(doc.createTextNode(String.valueOf(depth)));
try {
Transformer trans = TransformerFactory.newInstance().newTransformer();
trans.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, "no");
trans.setOutputProperty(OutputKeys.INDENT, "yes");
// don't use StreamResult(out) as it fails on paths with spaces
Result outputTarget = new StreamResult(new FileOutputStream(out));
trans.transform(new DOMSource(doc), outputTarget);
} catch (TransformerException e) {
throw (IOException) new IOException().initCause(e);
}
}
}