/*
 * Copyright (c) 2016, Metron, Inc.
 * 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 Metron, Inc. 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 METRON, INC. BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package com.metsci.glimpse.dspl.parser.column;

import com.metsci.glimpse.dspl.schema.Concept;
import com.metsci.glimpse.dspl.schema.DataType;
import com.metsci.glimpse.dspl.schema.Table.Column;

public class CompactInternStringTableColumn extends AbstractTableColumn
{
    protected String[] uniqueStrings;
    protected int[] indexByRow;

    public CompactInternStringTableColumn( Column column, Concept concept, int size, String[] uniqueStrings, int[] indexByRow )
    {
        super( column, concept, DataType.STRING, size );

        this.uniqueStrings = uniqueStrings;
        this.indexByRow = indexByRow;
    }

    @Override
    public boolean isConstant( )
    {
        return false;
    }

    @Override
    public String[] getStringData( )
    {
        String[] array = new String[size];
        for ( int i = 0; i < size; i++ )
        {
            int index = indexByRow[i];

            if ( index == -1 )
                array[i] = null;
            else
                array[i] = uniqueStrings[index];
        }

        return array;
    }

    @Override
    public String getStringData( int i )
    {
        int index = indexByRow[i];

        if ( index == -1 )
            return null;
        else
            return uniqueStrings[index];
    }
}