DatabaseState.java

/*
** Module   : DatabaseState.java
** Abstract : Database state that can be serialized and stored.
**
** 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 and sequences.
*/

/*
** 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.
**
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*/

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

import com.goldencode.p2j.persist.orm.schema.element.*;

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

/**
 * Database state that can be serialized and stored.
 */
public class DatabaseState
{

   /**
    * Timestamp of the state.
    */
   private final Instant creationTime;
   
   /**
    * Table list that further expands to columns and indexes.
    *
    * Intentionally visible within package for manipulations with EXTENT fields.
    */
   final Set<Table> tables = new HashSet<>();

   /**
    * Sequence list.
    */
   private final Set<Sequence> sequences = new HashSet<>();
   
   /**
    * Default constructor.
    *
    * @param creationTime Timestamp of the state
    */
   public DatabaseState(Instant creationTime)
   {
      this.creationTime = creationTime;
   }
   
   /**
    * Getter for tables.
    *
    * @return Table list
    */
   public Collection<Table> getTables()
   {
      return tables;
   }

   /**
    * Getter for sequences.
    *
    * @return Sequence list
    */
   public Collection<Sequence> getSequences()
   {
      return sequences;
   }
   
   /**
    * Getter for timestamp.
    *
    * @return Timestamp of the state
    */
   public Instant getCreationTime()
   {
      return creationTime;
   }
}