/*
 * Copyright (C) 2005-2011 Alfresco Software Limited.
 *
 * This file is part of Alfresco
 *
 * Alfresco 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 3 of the License, or
 * (at your option) any later version.
 *
 * Alfresco 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 Alfresco. If not, see <http://www.gnu.org/licenses/>.
 */
package org.alfresco.util.schemacomp.model;

import java.util.List;

/**
 * TODO: comment me!
 * @author Matt Ward
 */
public class Index extends AbstractDbObject
{
    private List<String> columnNames;

    
    /**
     * @return the columnNames
     */
    public List<String> getColumnNames()
    {
        return this.columnNames;
    }

    /**
     * @param columnNames the columnNames to set
     */
    public void setColumnNames(List<String> columnNames)
    {
        this.columnNames = columnNames;
    }

    /**
     * TODO: column names should be fully qualified, OR an Index should have a table name field
     * and the identifier should include it.
     * 
     * @return the Index identifier
     */
    @Override
    public Object getIdentifier()
    {
        return getColumnNames();
    }

    @Override
    public int hashCode()
    {
        final int prime = 31;
        int result = super.hashCode();
        result = prime * result + ((this.columnNames == null) ? 0 : this.columnNames.hashCode());
        return result;
    }

    @Override
    public boolean equals(Object obj)
    {
        if (this == obj) return true;
        if (!super.equals(obj)) return false;
        if (getClass() != obj.getClass()) return false;
        Index other = (Index) obj;
        if (this.columnNames == null)
        {
            if (other.columnNames != null) return false;
        }
        else if (!this.columnNames.equals(other.columnNames)) return false;
        return true;
    }
}