ComparisonResult.java

/*
** Module   : ComparisonResult.java
** Abstract : Result of schema comparison.
**
** Copyright (c) 2022-2023, Golden Code Development Corporation.
**
** -#- -I- --Date-- ---------------------------------------Description---------------------------------------
** 001 BS  20221103 Created initial version.
** 002 BS  20230331 Added support for extent fields.
*/

/*
** 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 may find a copy of the GNU Affero GPL version 3 at the following
** location: https://www.gnu.org/licenses/agpl-3.0.en.html
**
** Additional terms under GNU Affero GPL version 3 section 7:
**
**   Under Section 7 of the GNU Affero GPL version 3, the following additional
**   terms apply to the works covered under the License.  These additional terms
**   are non-permissive additional terms allowed under Section 7 of the GNU
**   Affero GPL version 3 and may not be removed by you.
**
**   0. Attribution Requirement.
**
**     You must preserve all legal notices or author attributions in the covered
**     work or Appropriate Legal Notices displayed by works containing the covered
**     work.  You may not remove from the covered work any author or developer
**     credit already included within the covered work.
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*/

package com.goldencode.p2j.persist.orm.schema;

import java.time.*;
import java.util.*;

/**
 * Result of schema comparison.
 */
public class ComparisonResult
{
   /**
    * Database state that can be serialized and stored. After successful loading info from DB it represents
    * a full state of the database.
    */
   private final DatabaseState state = new DatabaseState(Instant.now());
   
   /**
    * List of differences detected during comparison with previous state.
    *
    * Intentionally visible within package for manipulations with EXTENT fields.
    */
   final List<Difference> differences = new ArrayList<>();
   
   /**
    * Boolean result of comparison with previous state.
    *
    * @return true for no differences
    */
   public boolean isSame()
   {
      return differences.isEmpty();
   }
   
   /**
    * Getter for differences.
    *
    * @return Difference list
    */
   public Collection<Difference> getDifferences()
   {
      return differences;
   }
   
   /**
    * Getter for state.
    *
    * @return state of the database
    */
   public DatabaseState getState()
   {
      return state;
   }
}