/* Index - index access functions
 *
 * Copyright 2001-2004, Axel Dörfler, axeld@pinc-software.de.
 * This file may be used under the terms of the MIT License.
 */
#ifndef INDEX_H
#define INDEX_H


#include <KernelExport.h>

class Transaction;
class Volume;
class Inode;


class Index {
	public:
		Index(Volume *volume);
		~Index();

		status_t SetTo(const char *name);
		void Unset();

		Inode *Node() const { return fNode; };
		uint32 Type();
		size_t KeySize();

		status_t Create(Transaction &transaction, const char *name, uint32 type);

		status_t Update(Transaction &transaction, const char *name, int32 type, const uint8 *oldKey,
					uint16 oldLength, const uint8 *newKey, uint16 newLength, Inode *inode);

		status_t InsertName(Transaction &transaction, const char *name, Inode *inode);
		status_t RemoveName(Transaction &transaction, const char *name, Inode *inode);
		status_t UpdateName(Transaction &transaction, const char *oldName, const char *newName,
					Inode *inode);

		status_t InsertSize(Transaction &transaction, Inode *inode);
		status_t RemoveSize(Transaction &transaction, Inode *inode);
		status_t UpdateSize(Transaction &transaction, Inode *inode);

		status_t InsertLastModified(Transaction &transaction, Inode *inode);
		status_t RemoveLastModified(Transaction &transaction, Inode *inode);
		status_t UpdateLastModified(Transaction &transaction, Inode *inode, off_t modified = -1);

	private:
		Index(const Index &);
		Index &operator=(const Index &);
			// no implementation

		Volume		*fVolume;
		Inode		*fNode;
		const char	*fName;
};

#endif	/* INDEX_H */