Package org.hsqldb

Source Code of org.hsqldb.RowAVLDiskLarge

/* Copyright (c) 2001-2011, The HSQL Development Group
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* Neither the name of the HSQL Development Group nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL HSQL DEVELOPMENT GROUP, HSQLDB.ORG,
* OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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package org.hsqldb;

import java.io.IOException;

import org.hsqldb.index.NodeAVL;
import org.hsqldb.index.NodeAVLDiskLarge;
import org.hsqldb.persist.PersistentStore;
import org.hsqldb.rowio.RowInputInterface;

/**
* Subclass of Row huge databases. <p>
* @author Fred Toussi (fredt@users dot sourceforge dot net)
* @version 2.2.9
* @since 2.2.9
*/
public class RowAVLDiskLarge extends RowAVLDisk {

    /**
     *  Constructor for new Rows.  Variable hasDataChanged is set to true in
     *  order to indicate the data needs saving.
     *
     * @param t table
     * @param o row data
     */
    public RowAVLDiskLarge(TableBase t, Object[] o, PersistentStore store) {

        super(t, o, store);
    }

    /**
     *  Constructor when read from the disk into the Cache.
     *
     * @param t table
     * @param in data source
     * @throws IOException
     */
    public RowAVLDiskLarge(TableBase t, RowInputInterface in) throws IOException {

        super(t);

        position    = in.getPos();
        storageSize = in.getSize();

        int indexcount = t.getIndexCount();

        nPrimaryNode = new NodeAVLDiskLarge(this, in, 0);

        NodeAVL n = nPrimaryNode;

        for (int i = 1; i < indexcount; i++) {
            n.nNext = new NodeAVLDiskLarge(this, in, i);
            n       = n.nNext;
        }

        rowData = in.readData(table.getColumnTypes());
    }

    public void setNewNodes(PersistentStore store) {

        int indexcount = store.getAccessorKeys().length;

        nPrimaryNode = new NodeAVLDiskLarge(this, 0);

        NodeAVL n = nPrimaryNode;

        for (int i = 1; i < indexcount; i++) {
            n.nNext = new NodeAVLDiskLarge(this, i);
            n       = n.nNext;
        }
    }
}
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