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/*
* Copyright 2014 Open Networking Laboratory
*
* 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.onlab.graph;
/**
* Abstraction of a mutable path that allows gradual construction.
*/
public interface MutablePath<V extends Vertex, E extends Edge<V>> extends Path<V, E> {
/**
* Inserts a new edge at the beginning of this path. The edge must be
* adjacent to the prior start of the path.
*
* @param edge edge to be inserted
*/
void insertEdge(E edge);
/**
* Appends a new edge at the end of the this path. The edge must be
* adjacent to the prior end of the path.
*
* @param edge edge to be inserted
*/
void appendEdge(E edge);
/**
* Removes the specified edge. This edge must be either at the start or
* at the end of the path, or it must be a cyclic edge in order not to
* violate the contiguous path property.
*
* @param edge edge to be removed
*/
void removeEdge(E edge);
/**
* Sets the total path cost as a unit-less double.
*
* @param cost new path cost
*/
void setCost(double cost);
/**
* Returns an immutable copy of this path.
*
* @return immutable copy
*/
Path<V, E> toImmutable();
}
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