/*
* $Id$
*
* Copyright (C) 2003-2014 JNode.org
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library 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 Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library; If not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
package org.jnode.fs.hfsplus.extent;
import java.util.LinkedList;
import java.util.List;
import org.apache.log4j.Logger;
import org.jnode.fs.hfsplus.tree.AbstractLeafNode;
import org.jnode.fs.hfsplus.tree.Key;
import org.jnode.fs.hfsplus.tree.LeafRecord;
import org.jnode.fs.hfsplus.tree.NodeDescriptor;
public class ExtentLeafNode extends AbstractLeafNode<ExtentKey> {
private static final Logger log = Logger.getLogger(ExtentLeafNode.class);
/**
* Create a new node.
*
* @param descriptor
* @param nodeSize
*/
public ExtentLeafNode(NodeDescriptor descriptor, final int nodeSize) {
super(descriptor, nodeSize);
}
/**
* Create node from existing data.
*
* @param nodeData
* @param nodeSize
*/
public ExtentLeafNode(final byte[] nodeData, final int nodeSize) {
super(nodeData, nodeSize);
}
@Override
protected ExtentKey createKey(byte[] nodeData, int offset) {
return new ExtentKey(nodeData, offset);
}
@Override
protected LeafRecord createRecord(Key key, byte[] nodeData, int offset, int recordSize) {
return new LeafRecord(key, nodeData, offset, recordSize);
}
/**
* Gets all overflow extents that match the given key.
*
* @param key the key to match.
* @return the overflow extents.
*/
public ExtentDescriptor[] getOverflowExtents(ExtentKey key) {
List<ExtentDescriptor> overflowExtents = new LinkedList<ExtentDescriptor>();
for (LeafRecord record : findAll(key)) {
for (
int offset = 0; offset < record.getData().length; offset += ExtentDescriptor.EXTENT_DESCRIPTOR_LENGTH) {
ExtentDescriptor descriptor = new ExtentDescriptor(record.getData(), offset);
overflowExtents.add(descriptor);
}
}
return overflowExtents.toArray(new ExtentDescriptor[overflowExtents.size()]);
}
}