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package siprp.images.servlet;

import com.evolute.application.initializer.DefaultDatabaseInitializer;
import com.evolute.entity.ProviderInterface;
import com.evolute.utils.Singleton;
import com.evolute.utils.dataedition.persistence.Persistent;
import com.evolute.utils.error.ErrorLogger;
import shst.data.outer.ImageData;

/**
 *
 * @author dneves
 */
public class ImageDataProvider
{
	private static ImageDataProvider INSTANCE = null;

	private ProviderInterface< Persistent< ? >, Exception > ENTITY_PROVIDER = null;

	private ImageDataProvider() throws Exception
	{
		if ( Singleton.getInstance( Singleton.DEFAULT_EVO_DATA_PROVIDER ) == null )
		{
			new DefaultDatabaseInitializer( DBConstants.SERVER, DBConstants.PORT, DBConstants.DATABASE,
				DBConstants.USER, DBConstants.PASSWORD ).doInit();
		}

		ENTITY_PROVIDER = ( ProviderInterface< Persistent< ? >, Exception > ) Singleton.getInstance( Singleton.DEFAULT_EVO_DATA_PROVIDER );
	}

	public static synchronized ImageDataProvider getProvider() throws Exception
	{
		if ( INSTANCE == null )
		{
			INSTANCE = new ImageDataProvider();
		}
		return INSTANCE;
	}

	public ImageData loadImageDataByID( Integer imageID )
	{
		ImageData result = null;
		try
		{
			result = ENTITY_PROVIDER.load( ImageData.class, imageID, ImageData.ID );
		}
		catch ( Exception e )
		{
			ErrorLogger.logException( e );
		}
		return result;
	}

}