package org.flymine.objectstore.ojb;


/* ====================================================================
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2001 The Apache Software Foundation.  All rights
 * reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. 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.
 *
 * 3. The end-user documentation included with the redistribution,
 *    if any, must include the following acknowledgment:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowledgment may appear in the software itself,
 *    if and wherever such third-party acknowledgments normally appear.
 *
 * 4. The names "Apache" and "Apache Software Foundation" and
 *    "Apache ObjectRelationalBridge" must not be used to endorse or promote products
 *    derived from this software without prior written permission. For
 *    written permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache",
 *    "Apache ObjectRelationalBridge", nor may "Apache" appear in their name, without
 *    prior written permission of the Apache Software Foundation.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 THE APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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 * 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

import java.util.Set;
import java.util.HashSet;


import org.flymine.objectstore.query.Query;

import org.apache.ojb.broker.accesslayer.sql.SqlStatement;
import org.apache.ojb.broker.metadata.ClassDescriptor;

/**
 * Code to generate and sql statement...
 *
 * @author Richard Smith
 * @author Matthew Wakeling
 */


public class FlymineSqlSelectStatement implements SqlStatement
{
    private Query query;
    private ClassDescriptor[] clds;
    private Set from = new HashSet(); // @element-type QueryClass

    /**
     * Constructor requires a FlyMine Query and associated array of ClassDescriptors.
     * Should be a ClassDescriptor for each class in FROM clause of query.
     *
     * @param query a flymine query
     * @param clds ClassDescriptor[] for all classes in FROM clause of Query
     */
    public FlymineSqlSelectStatement(Query query, ClassDescriptor[] clds) {
        this.query = query;
        this.clds = clds;

        this.from = query.getClasses();

    }


    private void buildSelectComponent() {
    }


    private void buildFromComponent() {
    }




    /**
     * Return the statement as a string
     *
     * @return sql statement as a string
     */
    public String getStatement() {
        return new String("select nothing from nowhere");
    }

}

create an sql string from a Flymine query and ojb metadata, initial implementation does nothing