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/
GraphElement.java
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/
GraphElement.java
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/*
* Copyright © 2014 - 2020 Leipzig University (Database Research Group)
*
* 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 org.gradoop.common.model.api.entities;
import org.gradoop.common.model.impl.id.GradoopId;
import org.gradoop.common.model.impl.id.GradoopIdSet;
/**
* A graph element is part of a graph. An element can be part of more
* than one graph. This applies to vertices and edges.
*/
public interface GraphElement extends Element {
/**
* Returns all graphs that element belongs to.
*
* @return all graphs of that element
*/
GradoopIdSet getGraphIds();
/**
* Adds that element to the given graphId. If the element is already an
* element of the given graphId, nothing happens.
*
* @param graphId the graphId to be added to
*/
void addGraphId(GradoopId graphId);
/**
* Adds the given graph set to the element.
*
* @param graphIds the graphIds to be added
*/
void setGraphIds(GradoopIdSet graphIds);
/**
* Resets all graph elements.
*/
void resetGraphIds();
/**
* Returns the number of graphs this element belongs to.
*
* @return number of graphs containing that element
*/
int getGraphCount();
}