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Initial checkin - helper for memoizing Supplier-style functions

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darin.kelkhoff
2024-02-26 14:20:28 -06:00
parent a035bbe18f
commit 29a54f5293
1 changed files with 78 additions and 0 deletions
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qqq-backend-core/src/main/java/com/kingsrook/qqq/backend/core/utils/memoization/AnyKey.java Normal file
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/*
* QQQ - Low-code Application Framework for Engineers.
* Copyright (C) 2021-2024. 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.memoization;
/*******************************************************************************
** Meant to serve as the key in a Memoization where we actually don't need a parameter.
** e.g., to memoize a function like: public Object f();
*******************************************************************************/
public class AnyKey
{
private static AnyKey anyKey = null;
/*******************************************************************************
** Singleton constructor
*******************************************************************************/
private AnyKey()
{
}
/*******************************************************************************
** Singleton accessor
*******************************************************************************/
public static AnyKey getInstance()
{
if(anyKey == null)
{
anyKey = new AnyKey();
}
return (anyKey);
}
/*******************************************************************************
**
*******************************************************************************/
@Override
public boolean equals(Object obj)
{
return (obj == this);
}
/*******************************************************************************
**
*******************************************************************************/
@Override
public int hashCode()
{
return 1;
}
}