/***********************************************************************************************************************
* Copyright (C) 2010-2013 by the Stratosphere project (http://stratosphere.eu)
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
* an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
* specific language governing permissions and limitations under the License.
**********************************************************************************************************************/
package eu.stratosphere.nephele.managementgraph;
/**
* This class allows to attach an arbitrary {@link Object} to a part of a {@link ManagementGraph}. However, the
* attachment is not included in a possible serialization/deserialization of the graph or its components.
* <p>
* This class is not thread-safe.
*
*/
public abstract class ManagementAttachment {
/**
* The attachment to this part of the {@link ManagementGraph}.
*/
private Object attachment;
/**
* Sets an attachment for this part of the {@link ManagementGraph}.
*
* @param attachment
* the attachment for this part of the {@link ManagementGraph}
*/
public final void setAttachment(final Object attachment) {
this.attachment = attachment;
}
/**
* Returns the attachment for this part of the {@link ManagementGraph}.
*
* @return the attachment for this part of the {@link ManagementGraph} or <code>null</code> if no attachment is set
*/
public final Object getAttachment() {
return this.attachment;
}
}