RecordInfo.java

/*
** Module   : RecordInfo.java
** Abstract : Information that allows us to identify a record across multiple databases.
**
** Copyright (c) 2009-2024, Golden Code Development Corporation.
**
** -#- -I- --Date-- -JPRM- -----------------------------------Description-------------------------------------
** 001 SVL 20091126 @44449 Created initial version. Allows us to identify a record across multiple databases.
** 002 SBI 20170225        Changed to be a simple DTO that can be used by GWT RPC.
** 003 OM  20241128        Multi-tenant runtime support: selected the proper persistence context, eventually
**                         based on [sharedDb] parameter.
*/

/*
** 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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** 
**     This license does not grant any license or rights to use the trademarks
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*/

package com.goldencode.p2j.admin;

import java.io.Serializable;

/**
 * Class which contains information that allows us to identify a record across multiple databases.
 */
public class RecordInfo
implements Serializable
{
   /** Physical database name. */
   private String databaseName;

   /** Name of table. */
   private String tableName;

   /** Primary key ID. */
   private Long recordID;
   
   /**
    * {@code true} for records from non-private section of the database.
    * NOTE: This attribute does not need to be part of hash/equals since it is an attribute of the database.
    */
   private boolean sharedDb;

   /** Default constructor */
   public RecordInfo()
   {
   }
   
   /**
    * Constructor.
    *
    * @param   databaseName
    *          Physical database name.
    * @param   tableName
    *          Name of table.
    * @param   recordID
    *          Primary key ID.
    * @param   sharedDb
    *          {@code true} if the buffers are shared (not tenant private).
    */
   public RecordInfo(String databaseName, String tableName, Long recordID, boolean sharedDb)
   {
      this.databaseName = databaseName;
      this.tableName = tableName;
      this.recordID = recordID;
      this.sharedDb = sharedDb;
   }

   /**
    * Retrieve the physical database name.
    *
    * @return   Physical database name.
    */
   public String getDatabaseName()
   {
      return databaseName;
   }

   /**
    * Retrieve the table name.
    *
    * @return   Table name.
    */
   public String getTableName()
   {
      return tableName;
   }
   
   /**
    * Check if this records belongs to non-private section of the database.
    * 
    * @return  {@code true} if this records belongs to non-private section of the database.
    */
   public boolean isSharedDb()
   {
      return sharedDb;
   }
   
   /**
    * Retrieve the primary key ID of the record. This presumes all tables use
    * a 64-bit integral primary key.
    *
    * @return   Primary key of the record.
    */
   public Long getRecordID()
   {
      return recordID;
   }

   /**
    * Sets the database name.
    * 
    * @param    databaseName
    *           The database name
    */
   public void setDatabaseName(String databaseName)
   {
      this.databaseName = databaseName;
   }

   /**
    * Sets the table name.
    *
    * @param    tableName
    *           The table name
    */
   public void setTableName(String tableName)
   {
      this.tableName = tableName;
   }

   /**
    * Sets the record id.
    * 
    * @param    recordID
    *           The record id.
    */
   public void setRecordID(Long recordID)
   {
      this.recordID = recordID;
   }

   /**
    * Return a hash code consistent with {@link #equals}.
    *
    * @return   Hash code.
    */
   public int hashCode()
   {
      int result = 17;
      result = 37 * result + databaseName.hashCode();
      result = 37 * result + tableName.hashCode();
      result = 37 * result + recordID.hashCode();
      
      return result;
   }

   /**
    *  Test for equivalence with another object.
    *
    * @param    o
    *           Object to compare with.
    *
    * @return   <code>true</code> if <code>o</code> is the same type and the same internal state
    *           as this object; else <code>false</code>.
    */
   public boolean equals(Object o)
   {
      if (!(o instanceof RecordInfo))
      {
         return false;
      }

      if (o == this)
      {
         return true;
      }

      RecordInfo other = (RecordInfo) o;
      return databaseName.equals(other.databaseName) &&
             tableName.equals(other.tableName) &&
             recordID.equals(other.recordID);
   }
}