/*************************************************************************
* Copyright 2009-2013 Eucalyptus Systems, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 3 of the License.
*
* 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see http://www.gnu.org/licenses/.
*
* Please contact Eucalyptus Systems, Inc., 6755 Hollister Ave., Goleta
* CA 93117, USA or visit http://www.eucalyptus.com/licenses/ if you need
* additional information or have any questions.
************************************************************************/
package com.eucalyptus.util.techpreview;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
/**
* Declares this code to be tech preview. The only appropriate use for this is to use it for
* excluding implementations with this annotation from default system behaviours.
*
* For example, a {@link com.eucalyptus.component.ComponentId} annotated with this should not be
* included in default behaviours, like service groups.
*/
@Target( { ElementType.TYPE,
ElementType.FIELD } )
@Retention( RetentionPolicy.RUNTIME )
public @interface TechPreview {
/**
* Name of the system property to be used when enable the thing marked as TP for the annotated element.
*
* The property value must be "true" to enable.
*/
String enableByDefaultProperty( ) default "enable.tech.preview";
}