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darin.kelkhoff
2023-03-20 10:58:46 -05:00
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199
qqq-backend-core/src/main/java/com/kingsrook/qqq/backend/core/utils/collections/ListBuilder.java Normal file
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/*
* QQQ - Low-code Application Framework for Engineers.
* Copyright (C) 2021-2023. Kingsrook, LLC
* 651 N Broad St Ste 205 # 6917 | Middletown DE 19709 | United States
* contact@kingsrook.com
* https://github.com/Kingsrook/
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
package com.kingsrook.qqq.backend.core.utils.collections;
import java.util.ArrayList;
import java.util.List;
/*******************************************************************************
** List.of is "great", but annoying because it makes unmodifiable lists...
** So, replace it with this, which returns ArrayLists, which "don't suck"
*******************************************************************************/
public class ListBuilder
{
/*******************************************************************************
**
*******************************************************************************/
public static <E> List<E> of(E e1)
{
List<E> rs = new ArrayList<>();
rs.add(e1);
return (rs);
}
/*******************************************************************************
**
*******************************************************************************/
public static <E> List<E> of(E e1, E e2)
{
List<E> rs = new ArrayList<>();
rs.add(e1);
rs.add(e2);
return (rs);
}
/*******************************************************************************
**
*******************************************************************************/
public static <E> List<E> of(E e1, E e2, E e3)
{
List<E> rs = new ArrayList<>();
rs.add(e1);
rs.add(e2);
rs.add(e3);
return (rs);
}
/*******************************************************************************
**
*******************************************************************************/
public static <E> List<E> of(E e1, E e2, E e3, E e4)
{
List<E> rs = new ArrayList<>();
rs.add(e1);
rs.add(e2);
rs.add(e3);
rs.add(e4);
return (rs);
}
/*******************************************************************************
**
*******************************************************************************/
public static <E> List<E> of(E e1, E e2, E e3, E e4, E e5)
{
List<E> rs = new ArrayList<>();
rs.add(e1);
rs.add(e2);
rs.add(e3);
rs.add(e4);
rs.add(e5);
return (rs);
}
/*******************************************************************************
**
*******************************************************************************/
public static <E> List<E> of(E e1, E e2, E e3, E e4, E e5, E e6)
{
List<E> rs = new ArrayList<>();
rs.add(e1);
rs.add(e2);
rs.add(e3);
rs.add(e4);
rs.add(e5);
rs.add(e6);
return (rs);
}
/*******************************************************************************
**
*******************************************************************************/
public static <E> List<E> of(E e1, E e2, E e3, E e4, E e5, E e6, E e7)
{
List<E> rs = new ArrayList<>();
rs.add(e1);
rs.add(e2);
rs.add(e3);
rs.add(e4);
rs.add(e5);
rs.add(e6);
rs.add(e7);
return (rs);
}
/*******************************************************************************
**
*******************************************************************************/
public static <E> List<E> of(E e1, E e2, E e3, E e4, E e5, E e6, E e7, E e8)
{
List<E> rs = new ArrayList<>();
rs.add(e1);
rs.add(e2);
rs.add(e3);
rs.add(e4);
rs.add(e5);
rs.add(e6);
rs.add(e7);
rs.add(e8);
return (rs);
}
/*******************************************************************************
**
*******************************************************************************/
public static <E> List<E> of(E e1, E e2, E e3, E e4, E e5, E e6, E e7, E e8, E e9)
{
List<E> rs = new ArrayList<>();
rs.add(e1);
rs.add(e2);
rs.add(e3);
rs.add(e4);
rs.add(e5);
rs.add(e6);
rs.add(e7);
rs.add(e8);
rs.add(e9);
return (rs);
}
/*******************************************************************************
**
*******************************************************************************/
public static <E> List<E> of(E e1, E e2, E e3, E e4, E e5, E e6, E e7, E e8, E e9, E e10)
{
List<E> rs = new ArrayList<>();
rs.add(e1);
rs.add(e2);
rs.add(e3);
rs.add(e4);
rs.add(e5);
rs.add(e6);
rs.add(e7);
rs.add(e8);
rs.add(e9);
rs.add(e10);
return (rs);
}
}

72
qqq-backend-core/src/test/java/com/kingsrook/qqq/backend/core/utils/collections/ListBuilderTest.java Normal file
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/*
* QQQ - Low-code Application Framework for Engineers.
* Copyright (C) 2021-2023. Kingsrook, LLC
* 651 N Broad St Ste 205 # 6917 | Middletown DE 19709 | United States
* contact@kingsrook.com
* https://github.com/Kingsrook/
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
package com.kingsrook.qqq.backend.core.utils.collections;
import java.util.List;
import org.junit.jupiter.api.Test;
import static org.junit.jupiter.api.Assertions.assertEquals;
/*******************************************************************************
** Unit test for ListBuilder
*******************************************************************************/
class ListBuilderTest
{
/*******************************************************************************
**
*******************************************************************************/
@Test
void testSameAsListOf()
{
assertEquals(List.of(1), ListBuilder.of(1));
assertEquals(List.of(1, 2), ListBuilder.of(1, 2));
assertEquals(List.of(1, 2, 3), ListBuilder.of(1, 2, 3));
assertEquals(List.of(1, 2, 3, 4), ListBuilder.of(1, 2, 3, 4));
assertEquals(List.of(1, 2, 3, 4, 5), ListBuilder.of(1, 2, 3, 4, 5));
assertEquals(List.of(1, 2, 3, 4, 5, 6), ListBuilder.of(1, 2, 3, 4, 5, 6));
assertEquals(List.of(1, 2, 3, 4, 5, 6, 7), ListBuilder.of(1, 2, 3, 4, 5, 6, 7));
assertEquals(List.of(1, 2, 3, 4, 5, 6, 7, 8), ListBuilder.of(1, 2, 3, 4, 5, 6, 7, 8));
assertEquals(List.of(1, 2, 3, 4, 5, 6, 7, 8, 9), ListBuilder.of(1, 2, 3, 4, 5, 6, 7, 8, 9));
assertEquals(List.of(1, 2, 3, 4, 5, 6, 7, 8, 9, 10), ListBuilder.of(1, 2, 3, 4, 5, 6, 7, 8, 9, 10));
}
/*******************************************************************************
**
*******************************************************************************/
@Test
void testBetterThanListMapOf()
{
///////////////////////////////
// assert this doesn't throw //
///////////////////////////////
List<Integer> list = ListBuilder.of(1, null, 3);
///////////////////////////////////////
// this too, doesn't freaking throw. //
///////////////////////////////////////
list.add(4);
}
}