/*
* ModeShape (http://www.modeshape.org)
*
* 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.
*/
package org.modeshape.jcr.value.binary;
import java.io.File;
import java.net.URISyntaxException;
import java.net.URL;
import org.modeshape.common.annotation.ThreadSafe;
import org.modeshape.common.util.SecureHash;
import org.modeshape.jcr.mimetype.MimeTypeDetector;
import org.modeshape.jcr.value.BinaryKey;
/**
* A subclass of {@link UrlBinaryValue} to lazily compute a contentBased Hash when the key is a URI based Hash
*/
@ThreadSafe
public class FileUrlBinaryValue extends UrlBinaryValue {
private static final long serialVersionUID = 1L;
private BinaryKey hash;
private URL content;
public FileUrlBinaryValue( String sha1,
String sourceName,
URL content,
long size,
String nameHint,
MimeTypeDetector mimeTypeDetector ) {
super(sha1, sourceName, content, size, nameHint, mimeTypeDetector);
this.content = content;
}
@Override
public byte[] getHash() {
return generateHash().toBytes();
}
@Override
public String getHexHash() {
return generateHash().toString();
}
private synchronized BinaryKey generateHash() {
if (this.hash == null) {
try {
byte[] hashBytes = SecureHash.getHash(SecureHash.Algorithm.SHA_1, convertURLtoFile(this.content));
this.hash = new BinaryKey(hashBytes);
} catch (Exception e) {
throw new RuntimeException(e);
}
}
return this.hash;
}
private File convertURLtoFile( URL url ) {
File f;
try {
f = new File(url.toURI());
} catch (URISyntaxException e) {
f = new File(url.getPath());
}
return f;
}
}