dive4elements/river: flys-artifacts/src/main/java/de/intevation/flys/artifacts/model/QRangeTree.java annotate

annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/model/QRangeTree.java @ 1020:a776afdf1ec5

Cosmetic: Replaced usage of legacy java.util.Stack with java.util.Deque. flys-artifacts/trunk@2475 c6561f87-3c4e-4783-a992-168aeb5c3f6f

author	Sascha L. Teichmann <sascha.teichmann@intevation.de>
date	Tue, 09 Aug 2011 10:23:04 +0000
parents	d08f77e7f7e8
children	9144e5a5027b

rev	line source
625 c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	1 package de.intevation.flys.artifacts.model;
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	2
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	3 import java.io.Serializable;
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	4
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	5 import java.util.List;
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	6
633 d08f77e7f7e8 WST value table: Qs are now stored in ranges for each column. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 632 diff changeset	7 import org.apache.log4j.Logger;
625 c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	8
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	9 public class QRangeTree
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	10 implements Serializable
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	11 {
633 d08f77e7f7e8 WST value table: Qs are now stored in ranges for each column. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 632 diff changeset	12 private static Logger log = Logger.getLogger(QRangeTree.class);
d08f77e7f7e8 WST value table: Qs are now stored in ranges for each column. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 632 diff changeset	13
625 c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	14 public static class Node
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	15 implements Serializable
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	16 {
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	17 Node left;
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	18 Node right;
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	19 Node prev;
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	20 Node next;
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	21
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	22 double a;
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	23 double b;
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	24 double q;
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	25
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	26 public Node() {
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	27 }
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	28
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	29 public Node(double a, double b, double q) {
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	30 this.a = a;
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	31 this.b = b;
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	32 this.q = q;
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	33 }
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	34
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	35 protected final double interpolatePrev(double pos) {
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	36 /*
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	37 f(prev.b) = prev.q
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	38 f(a) = q
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	39
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	40 prev.q = m*prev.b + n
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	41 q = ma + n <=> n = q - ma
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	42
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	43 q - prev.q = m*(a - prev.b)
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	44
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	45 m = (q - prev.q)/(a - prev.b) # a != prev.b
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	46 */
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	47
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	48 if (a == prev.b) {
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	49 return 0.5*(q + prev.q);
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	50 }
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	51 double m = (q - prev.q)/(a - prev.b);
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	52 double n = q - m*a;
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	53 return m*pos + n;
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	54 }
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	55
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	56 protected final double interpolateNext(double pos) {
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	57 /*
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	58 f(next.a) = next.q
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	59 f(b) = q
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	60
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	61 next.q = m*next.a + n
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	62 q = mb + n <=> n = q - mb
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	63
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	64 q - next.q = m*(b - next.a)
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	65 m = (q - next.q)/(b - next.a) # b != next.a
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	66 */
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	67
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	68 if (b == next.a) {
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	69 return 0.5*(q + next.q);
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	70 }
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	71 double m = (q - next.q)/(b - next.a);
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	72 double n = q - m*b;
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	73 return m*pos + n;
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	74 }
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	75
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	76 public double findQ(double pos) {
633 d08f77e7f7e8 WST value table: Qs are now stored in ranges for each column. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 632 diff changeset	77
625 c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	78 Node current = this;
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	79 for (;;) {
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	80 if (pos < current.a) {
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	81 if (current.left != null) {
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	82 current = current.left;
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	83 continue;
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	84 }
633 d08f77e7f7e8 WST value table: Qs are now stored in ranges for each column. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 632 diff changeset	85 return current.prev != null
625 c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	86 ? current.interpolatePrev(pos)
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	87 : Double.NaN;
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	88 }
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	89 if (pos > current.b) {
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	90 if (current.right != null) {
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	91 current = current.right;
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	92 continue;
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	93 }
633 d08f77e7f7e8 WST value table: Qs are now stored in ranges for each column. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 632 diff changeset	94 return current.next != null
625 c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	95 ? current.interpolateNext(pos)
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	96 : Double.NaN;
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	97 }
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	98 return current.q;
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	99 }
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	100 }
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	101 } // class Node
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	102
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	103 protected Node root;
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	104
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	105 public QRangeTree() {
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	106 }
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	107
632 07640ab913fd First part of storing qs in ranges Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 625 diff changeset	108 /** wstQRanges need to be sorted by range.a */
07640ab913fd First part of storing qs in ranges Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 625 diff changeset	109 public QRangeTree(List<Object []> qRanges, int start, int stop) {
07640ab913fd First part of storing qs in ranges Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 625 diff changeset	110
07640ab913fd First part of storing qs in ranges Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 625 diff changeset	111 if (stop <= start) {
07640ab913fd First part of storing qs in ranges Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 625 diff changeset	112 return;
07640ab913fd First part of storing qs in ranges Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 625 diff changeset	113 }
07640ab913fd First part of storing qs in ranges Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 625 diff changeset	114
07640ab913fd First part of storing qs in ranges Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 625 diff changeset	115 Node [] nodes = new Node[stop-start];
07640ab913fd First part of storing qs in ranges Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 625 diff changeset	116 for (int i = 0; i < nodes.length; ++i) {
07640ab913fd First part of storing qs in ranges Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 625 diff changeset	117 Object [] qRange = qRanges.get(i + start);
07640ab913fd First part of storing qs in ranges Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 625 diff changeset	118 Double q = (Double)qRange[1];
07640ab913fd First part of storing qs in ranges Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 625 diff changeset	119 Double a = (Double)qRange[2];
07640ab913fd First part of storing qs in ranges Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 625 diff changeset	120 Double b = (Double)qRange[3];
07640ab913fd First part of storing qs in ranges Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 625 diff changeset	121
07640ab913fd First part of storing qs in ranges Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 625 diff changeset	122 nodes[i] = new Node(
07640ab913fd First part of storing qs in ranges Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 625 diff changeset	123 a != null ? a.doubleValue() : -Double.MAX_VALUE,
07640ab913fd First part of storing qs in ranges Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 625 diff changeset	124 b != null ? b.doubleValue() : Double.MAX_VALUE,
07640ab913fd First part of storing qs in ranges Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 625 diff changeset	125 q.doubleValue());
07640ab913fd First part of storing qs in ranges Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 625 diff changeset	126 }
07640ab913fd First part of storing qs in ranges Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 625 diff changeset	127
07640ab913fd First part of storing qs in ranges Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 625 diff changeset	128 root = wireTree(nodes);
07640ab913fd First part of storing qs in ranges Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 625 diff changeset	129 }
07640ab913fd First part of storing qs in ranges Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 625 diff changeset	130
07640ab913fd First part of storing qs in ranges Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 625 diff changeset	131 protected static Node wireTree(Node [] nodes) {
625 c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	132 for (int i = 0; i < nodes.length; ++i) {
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	133 Node node = nodes[i];
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	134 if (i > 0 ) node.prev = nodes[i-1];
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	135 if (i < nodes.length-1) node.next = nodes[i+1];
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	136 }
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	137
632 07640ab913fd First part of storing qs in ranges Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 625 diff changeset	138 return buildTree(nodes, 0, nodes.length-1);
625 c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	139 }
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	140
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	141 protected static Node buildTree(Node [] nodes, int lo, int hi) {
632 07640ab913fd First part of storing qs in ranges Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 625 diff changeset	142
07640ab913fd First part of storing qs in ranges Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 625 diff changeset	143 if (lo > hi) {
07640ab913fd First part of storing qs in ranges Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 625 diff changeset	144 return null;
07640ab913fd First part of storing qs in ranges Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 625 diff changeset	145 }
07640ab913fd First part of storing qs in ranges Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 625 diff changeset	146
625 c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	147 int mid = (lo + hi) >> 1;
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	148 Node parent = nodes[mid];
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	149
632 07640ab913fd First part of storing qs in ranges Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 625 diff changeset	150 parent.left = buildTree(nodes, lo, mid-1);
07640ab913fd First part of storing qs in ranges Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 625 diff changeset	151 parent.right = buildTree(nodes, mid+1, hi);
625 c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	152
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	153 return parent;
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	154 }
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	155
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	156 public double findQ(double pos) {
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	157 return root != null ? root.findQ(pos) : Double.NaN;
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	158 }
632 07640ab913fd First part of storing qs in ranges Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 625 diff changeset	159
07640ab913fd First part of storing qs in ranges Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 625 diff changeset	160 private static final String name(Object o) {
07640ab913fd First part of storing qs in ranges Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 625 diff changeset	161 return String.valueOf(System.identityHashCode(o) & 0xffffffffL);
07640ab913fd First part of storing qs in ranges Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 625 diff changeset	162 }
07640ab913fd First part of storing qs in ranges Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 625 diff changeset	163
07640ab913fd First part of storing qs in ranges Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 625 diff changeset	164 public String toGraph() {
07640ab913fd First part of storing qs in ranges Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 625 diff changeset	165 StringBuilder sb = new StringBuilder();
07640ab913fd First part of storing qs in ranges Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 625 diff changeset	166 sb.append("subgraph c");
07640ab913fd First part of storing qs in ranges Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 625 diff changeset	167 sb.append(name(this));
07640ab913fd First part of storing qs in ranges Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 625 diff changeset	168 sb.append(" {\n");
07640ab913fd First part of storing qs in ranges Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 625 diff changeset	169 if (root != null) {
1020 a776afdf1ec5 Cosmetic: Replaced usage of legacy java.util.Stack with java.util.Deque. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 633 diff changeset	170 java.util.Deque<Node> stack = new java.util.ArrayDeque<Node>();
632 07640ab913fd First part of storing qs in ranges Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 625 diff changeset	171 stack.push(root);
1020 a776afdf1ec5 Cosmetic: Replaced usage of legacy java.util.Stack with java.util.Deque. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 633 diff changeset	172 while (!stack.isEmpty()) {
632 07640ab913fd First part of storing qs in ranges Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 625 diff changeset	173 Node current = stack.pop();
07640ab913fd First part of storing qs in ranges Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 625 diff changeset	174 String name = "n" + name(current);
07640ab913fd First part of storing qs in ranges Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 625 diff changeset	175 sb.append(name);
07640ab913fd First part of storing qs in ranges Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 625 diff changeset	176 sb.append(" [label=\"");
07640ab913fd First part of storing qs in ranges Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 625 diff changeset	177 sb.append(current.a).append(", ").append(current.b);
07640ab913fd First part of storing qs in ranges Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 625 diff changeset	178 sb.append(": ").append(current.q).append("\"]\n");
07640ab913fd First part of storing qs in ranges Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 625 diff changeset	179 if (current.left != null) {
07640ab913fd First part of storing qs in ranges Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 625 diff changeset	180 String leftName = name(current.left);
07640ab913fd First part of storing qs in ranges Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 625 diff changeset	181 sb.append(name).append(" -- n").append(leftName).append("\n");
07640ab913fd First part of storing qs in ranges Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 625 diff changeset	182 stack.push(current.left);
07640ab913fd First part of storing qs in ranges Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 625 diff changeset	183 }
07640ab913fd First part of storing qs in ranges Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 625 diff changeset	184 if (current.right != null) {
07640ab913fd First part of storing qs in ranges Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 625 diff changeset	185 String rightName = name(current.right);
07640ab913fd First part of storing qs in ranges Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 625 diff changeset	186 sb.append(name).append(" -- n").append(rightName).append("\n");
07640ab913fd First part of storing qs in ranges Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 625 diff changeset	187 stack.push(current.right);
07640ab913fd First part of storing qs in ranges Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 625 diff changeset	188 }
07640ab913fd First part of storing qs in ranges Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 625 diff changeset	189 }
07640ab913fd First part of storing qs in ranges Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 625 diff changeset	190 }
07640ab913fd First part of storing qs in ranges Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 625 diff changeset	191 sb.append("}\n");
07640ab913fd First part of storing qs in ranges Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 625 diff changeset	192 return sb.toString();
07640ab913fd First part of storing qs in ranges Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 625 diff changeset	193 }
625 c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	194 }
c0c60a611fca Introduce model to store q values of WST columns efficiently. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	195 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :

Mercurial > dive4elements > river

annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/model/QRangeTree.java @ 1020:a776afdf1ec5