DataEntityDAO.java
/*
* Copyright (c) 2002-2022, City of Paris
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright notice
* and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice
* and the following disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* 3. Neither the name of 'Mairie de Paris' nor 'Lutece' nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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*
* License 1.0
*/
package fr.paris.lutece.portal.business.datastore;
import fr.paris.lutece.util.sql.DAOUtil;
import java.util.ArrayList;
import java.util.List;
/**
* This class provides Data Access methods for Entity objects
*/
public final class DataEntityDAO implements IDataEntityDAO
{
// Constants
private static final String SQL_QUERY_SELECT = "SELECT entity_key, entity_value FROM core_datastore WHERE entity_key = ?";
private static final String SQL_QUERY_INSERT = "INSERT INTO core_datastore ( entity_key, entity_value ) VALUES ( ?, ? ) ";
private static final String SQL_QUERY_DELETE = "DELETE FROM core_datastore WHERE entity_key = ? ";
private static final String SQL_QUERY_UPDATE = "UPDATE core_datastore SET entity_value = ? WHERE entity_key = ?";
private static final String SQL_QUERY_SELECTALL = "SELECT entity_key, entity_value FROM core_datastore";
/**
* Insert a new record in the table.
*
* @param entity
* instance of the Entity object to insert
*/
@Override
public void insert( DataEntity entity )
{
try ( DAOUtil daoUtil = new DAOUtil( SQL_QUERY_INSERT ) )
{
daoUtil.setString( 1, entity.getKey( ) );
daoUtil.setString( 2, entity.getValue( ) );
daoUtil.executeUpdate( );
}
}
/**
* Load the data of the entity from the table
*
* @param strKey
* The identifier of the entity
* @return the instance of the Entity
*/
@Override
public DataEntity load( String strKey )
{
DataEntity entity = null;
try ( DAOUtil daoUtil = new DAOUtil( SQL_QUERY_SELECT ) )
{
daoUtil.setString( 1, strKey );
daoUtil.executeQuery( );
if ( daoUtil.next( ) )
{
entity = new DataEntity( );
entity.setKey( daoUtil.getString( 1 ) );
entity.setValue( daoUtil.getString( 2 ) );
}
}
return entity;
}
/**
* Delete a record from the table
*
* @param strKey
* The identifier of the entity
*/
@Override
public void delete( String strKey )
{
try ( DAOUtil daoUtil = new DAOUtil( SQL_QUERY_DELETE ) )
{
daoUtil.setString( 1, strKey );
daoUtil.executeUpdate( );
}
}
/**
* Update the record in the table
*
* @param entity
* The reference of the entity
*/
@Override
public void store( DataEntity entity )
{
try ( DAOUtil daoUtil = new DAOUtil( SQL_QUERY_UPDATE ) )
{
daoUtil.setString( 1, entity.getValue( ) );
daoUtil.setString( 2, entity.getKey( ) );
daoUtil.executeUpdate( );
}
}
/**
* Load the data of all the entitys and returns them as a List
*
* @return The List which contains the data of all the entitys
*/
@Override
public List<DataEntity> selectEntitiesList( )
{
List<DataEntity> entityList = new ArrayList<>( );
try ( DAOUtil daoUtil = new DAOUtil( SQL_QUERY_SELECTALL ) )
{
daoUtil.executeQuery( );
while ( daoUtil.next( ) )
{
DataEntity entity = new DataEntity( );
entity.setKey( daoUtil.getString( 1 ) );
entity.setValue( daoUtil.getString( 2 ) );
entityList.add( entity );
}
}
return entityList;
}
}