DBOracleTest.java :  » Database-ORM » Torque » org » apache » torque » adapter » Java Open Source

package org.apache.torque.adapter;

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 * "License"); you may not use this file except in compliance
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 *   http://www.apache.org/licenses/LICENSE-2.0
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import junit.framework.TestCase;

import org.apache.torque.util.Query;
import org.apache.torque.util.UniqueList;

public class DBOracleTest extends TestCase
{
    /**
     * Tests whether replacing the select columns in limit/offset
     * treatment works (double column names must be aliased)
     */
    public void testSelectColumnsForLimitOffset()
    {
        Query query = new Query();
        UniqueList input = new UniqueList();
        input.add("c1");
        input.add("c2");
        input.add("c1 a1");
        input.add("c1 a2");
        input.add("t.c1 a4");

        // A list with no duplicates must remain unchanged
        query.setSelectClause(new UniqueList(input));
        new DBOracle().generateLimits(query, 0, 1);
        assertEquals(input, query.getSelectClause());

        // double column names must be aliased
        input.set(1, "t.c1");
        query.setSelectClause(new UniqueList(input));
        new DBOracle().generateLimits(query, 0, 1);
        UniqueList expected = new UniqueList(input);
        expected.set(1, "t.c1 a0");
        assertEquals(expected, query.getSelectClause());

        // a column name which is the same as an alias name must be replaced
        input.set(1, "c2");
        input.set(0, "t.a1");
        query.setSelectClause(new UniqueList(input));
        new DBOracle().generateLimits(query, 0, 1);
        expected = new UniqueList(input);
        expected.set(0, "t.a1 a0");
        assertEquals(query.getSelectClause(), expected);

        // triple column names must be made unique
        input.set(1, "t2.a1");
        query.setSelectClause(new UniqueList(input));
        new DBOracle().generateLimits(query, 0, 1);
        expected = new UniqueList(input);
        expected.set(0, "t.a1 a0");
        expected.set(1, "t2.a1 a3");
        assertEquals(expected, query.getSelectClause());
    }

}