public void calcLeastCostTree(Node fromNode, double startTime) { augmentIterationId(); PseudoRemovePriorityQueue<Node> pendingNodes = new PseudoRemovePriorityQueue<Node>(500); // initFromNode DijkstraNodeData data = getData(fromNode); visitNode(fromNode, data, pendingNodes, this.estimatedStartTime, 0, null); while (true) { Node outNode = pendingNodes.poll(); if (outNode == null) return; relaxNode(outNode, null, pendingNodes); } }
public void calcLeastCostPathTree(Node fromNode, double startTime) { this.fromNode = fromNode; this.startTime = startTime; augmentIterationId(); PseudoRemovePriorityQueue<Node> pendingNodes = new PseudoRemovePriorityQueue<Node>(500);// TODO other options?? initFromNode(fromNode, null, startTime, pendingNodes); while (!pendingNodes.isEmpty()) { relaxNode(pendingNodes.poll(), null, pendingNodes); } }
public void calcLeastCostTree(Node fromNode, double startTime) { augmentIterationId(); PseudoRemovePriorityQueue<Node> pendingNodes = new PseudoRemovePriorityQueue<Node>(500); //initFromNode DijkstraNodeData data = getData(fromNode); visitNode(fromNode, data, pendingNodes, startTime, 0, null); while (true) { Node outNode = pendingNodes.poll(); if (outNode == null) return; relaxNode(outNode, null, pendingNodes); } } }
Node outNode = pendingNodes.poll();
public void testRemoveAndAdd_HigherPriority() { PseudoRemovePriorityQueue<Integer> pq = new PseudoRemovePriorityQueue<Integer>(10); pq.add(Integer.valueOf(5), 5.0); pq.add(Integer.valueOf(3), 3.0); pq.add(Integer.valueOf(6), 6.0); assertEquals(3, pq.size()); // test removing an element and adding it with higher priority (=lower value) pq.remove(Integer.valueOf(5)); assertEquals(2, pq.size()); pq.add(Integer.valueOf(5), 2.5); assertEquals(3, pq.size()); assertEquals(Integer.valueOf(5), pq.poll()); assertEquals(Integer.valueOf(3), pq.poll()); assertEquals(Integer.valueOf(6), pq.poll()); assertNull(pq.poll()); }
public void testPoll() { PseudoRemovePriorityQueue<Integer> pq = new PseudoRemovePriorityQueue<Integer>(10); pq.add(Integer.valueOf(5), 5.0); pq.add(Integer.valueOf(3), 3.0); pq.add(Integer.valueOf(6), 6.0); assertEquals(3, pq.size()); assertEquals(Integer.valueOf(3), pq.poll()); assertEquals(2, pq.size()); pq.add(Integer.valueOf(1), 1.0); pq.add(Integer.valueOf(4), 4.0); pq.add(Integer.valueOf(9), 9.0); assertEquals(5, pq.size()); assertEquals(Integer.valueOf(1), pq.poll()); assertEquals(Integer.valueOf(4), pq.poll()); assertEquals(Integer.valueOf(5), pq.poll()); assertEquals(Integer.valueOf(6), pq.poll()); assertEquals(Integer.valueOf(9), pq.poll()); assertEquals(0, pq.size()); assertNull(pq.poll()); }
public void testRemoveAndAdd_LowerPriority() { PseudoRemovePriorityQueue<Integer> pq = new PseudoRemovePriorityQueue<Integer>(10); pq.add(Integer.valueOf(5), 5.0); pq.add(Integer.valueOf(3), 3.0); pq.add(Integer.valueOf(6), 6.0); assertEquals(3, pq.size()); // test removing an element and adding it with lower priority (=higher value) pq.remove(Integer.valueOf(5)); assertEquals(2, pq.size()); pq.add(Integer.valueOf(5), 7.0); assertEquals(3, pq.size()); assertEquals(Integer.valueOf(3), pq.poll()); assertEquals(Integer.valueOf(6), pq.poll()); assertEquals(Integer.valueOf(5), pq.poll()); assertNull(pq.poll()); }
public void testIterator_ConcurrentModification_poll() { PseudoRemovePriorityQueue<Integer> pq = new PseudoRemovePriorityQueue<Integer>(10); pq.add(Integer.valueOf(5), 5.0); pq.add(Integer.valueOf(3), 3.0); pq.add(Integer.valueOf(6), 6.0); Iterator<Integer> iter = pq.iterator(); assertTrue(iter.hasNext()); assertNotNull(iter.next()); pq.poll(); assertTrue(iter.hasNext()); try { iter.next(); fail("missing ConcurrentModificationException"); } catch (ConcurrentModificationException e) { log.info("catched expected exception.", e); } iter = pq.iterator(); // but a new iterator must work again assertTrue(iter.hasNext()); assertNotNull(iter.next()); }
assertEquals(entry0, pq.poll()); assertEquals(entry1, pq.poll()); assertEquals(entry2, pq.poll()); assertNull(pq.poll()); pq.decreaseKey(entry2, 4.0); assertEquals(3, pq.size()); assertEquals(entry2, pq.poll()); assertEquals(entry1, pq.poll()); assertEquals(entry0, pq.poll()); assertNull(pq.poll());