multipleentry.java

berkeleyDB,强大的嵌入式数据,多个数据库的内核

/*-
* See the file LICENSE for redistribution information.
*
* Copyright (c) 2002-2004
*	Sleepycat Software.  All rights reserved.
*
* $Id: MultipleEntry.java,v 1.4 2004/09/28 19:30:37 mjc Exp $
*/

package com.sleepycat.db;

import com.sleepycat.db.internal.DbConstants;

public abstract class MultipleEntry extends DatabaseEntry {
    protected int pos;

    protected MultipleEntry(final byte[] data, final int offset, final int size) {
        super(data, offset, size);
        setUserBuffer(data.length - offset, true);
        this.flags |= DbConstants.DB_DBT_USERMEM;
    }

    public void setUserBuffer(final int length, final boolean usermem) {
        if (!usermem)
            throw new IllegalArgumentException("User buffer required");
        super.setUserBuffer(length, usermem);
    }
}