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*
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package jsettlers.algorithms.path.astar.queues.bucket;
public abstract class AbstractBucketQueue {
public abstract void insert(int elementId, float rank);
public abstract int size();
public abstract void clear();
/**
* Deletes the element of the heap that has the minimal value.
* <p>
* If the heap is empty, no action is performed.
*
* @return The deleted element, or -1 if the heap was empty.
*/
public abstract int deleteMin();
/**
* This method must be called to update the position in the priority queue when the costs of the element had been reduced (the priority has
* increased!).
*
* @param elementId
* Id of the element.
* @param newRank
* the old rank of the element.
*/
public abstract void increasedPriority(int elementId, float oldRank, float newRank);
/**
*
* @return Returns true if the priority queue is empty,<br>
* false if it's not empty.
*/
public abstract boolean isEmpty();
}