Mercurial > dive4elements > river

comparison backend/src/main/java/org/dive4elements/river/model/CrossSection.java @ 5838:5aa05a7a34b7

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Rename modules to more fitting names.
author Sascha L. Teichmann <teichmann@intevation.de>
date Thu, 25 Apr 2013 15:23:37 +0200
parents flys-backend/src/main/java/org/dive4elements/river/model/CrossSection.java@18619c1e7c2a
children 4dd33b86dc61
comparison
equal deleted inserted replaced
5837:d9901a08d0a6 5838:5aa05a7a34b7
1 package org.dive4elements.river.model;
2
3 import java.io.Serializable;
4
5 import java.util.List;
6 import java.util.ArrayList;
7
8 import java.awt.geom.Point2D;
9
10 import javax.persistence.Entity;
11 import javax.persistence.Id;
12 import javax.persistence.Table;
13 import javax.persistence.GeneratedValue;
14 import javax.persistence.Column;
15 import javax.persistence.SequenceGenerator;
16 import javax.persistence.GenerationType;
17 import javax.persistence.OneToOne;
18 import javax.persistence.OneToMany;
19 import javax.persistence.OrderBy;
20 import javax.persistence.JoinColumn;
21
22 import java.math.MathContext;
23 import java.math.BigDecimal;
24
25 import org.hibernate.Session;
26 import org.hibernate.SQLQuery;
27 import org.hibernate.Query;
28
29 import org.hibernate.type.StandardBasicTypes;
30
31 import org.dive4elements.river.backend.SessionHolder;
32
33 @Entity
34 @Table(name = "cross_sections")
35 public class CrossSection
36 implements Serializable
37 {
38 public static final MathContext PRECISION = new MathContext(6);
39
40 public static final String SQL_FAST_CROSS_SECTION_LINES =
41 "SELECT km, x, y, csl.id AS csl_id " +
42 "FROM cross_section_lines csl JOIN cross_section_points csp " +
43 "ON csp.cross_section_line_id = csl.id " +
44 "WHERE csl.cross_section_id = :cs_id AND " +
45 "km between :from_km AND :to_km " +
46 "ORDER BY csl.id, csp.col_pos";
47
48 private Integer id;
49 private River river;
50 private TimeInterval timeInterval;
51 private String description;
52 private List<CrossSectionLine> lines;
53
54 public CrossSection() {
55 }
56
57 public CrossSection(
58 River river,
59 TimeInterval timeInterval,
60 String description
61 ) {
62 this.river = river;
63 this.timeInterval = timeInterval;
64 this.description = description;
65 }
66
67 @Id
68 @SequenceGenerator(
69 name = "SEQUENCE_CROSS_SECTIONS_ID_SEQ",
70 sequenceName = "CROSS_SECTIONS_ID_SEQ",
71 allocationSize = 1)
72 @GeneratedValue(
73 strategy = GenerationType.SEQUENCE,
74 generator = "SEQUENCE_CROSS_SECTIONS_ID_SEQ")
75 @Column(name = "id")
76 public Integer getId() {
77 return id;
78 }
79
80 public void setId(Integer id) {
81 this.id = id;
82 }
83
84 @OneToOne
85 @JoinColumn(name = "river_id")
86 public River getRiver() {
87 return river;
88 }
89
90 public void setRiver(River river) {
91 this.river = river;
92 }
93
94 @OneToOne
95 @JoinColumn(name = "time_interval_id")
96 public TimeInterval getTimeInterval() {
97 return timeInterval;
98 }
99
100 public void setTimeInterval(TimeInterval timeInterval) {
101 this.timeInterval = timeInterval;
102 }
103
104 @Column(name = "description")
105 public String getDescription() {
106 return description;
107 }
108
109 public void setDescription(String description) {
110 this.description = description;
111 }
112
113 @OneToMany
114 @OrderBy("km")
115 @JoinColumn(name="cross_section_id")
116 public List<CrossSectionLine> getLines() {
117 return lines;
118 }
119
120 public void setLines(List<CrossSectionLine> lines) {
121 this.lines = lines;
122 }
123
124 public List<CrossSectionLine> getLines(double startKm, double endKm) {
125 Session session = SessionHolder.HOLDER.get();
126 Query query = session.createQuery(
127 "from CrossSectionLine where crossSection=:crossSection " +
128 "and km between :startKm and :endKm order by km");
129 query.setParameter("crossSection", this);
130 query.setParameter("startKm", new BigDecimal(startKm, PRECISION));
131 query.setParameter("endKm", new BigDecimal(endKm, PRECISION));
132
133 return query.list();
134 }
135
136 public List<FastCrossSectionLine> getFastLines(
137 double startKm,
138 double endKm
139 ) {
140 Session session = SessionHolder.HOLDER.get();
141
142 SQLQuery sqlQuery = session.createSQLQuery(SQL_FAST_CROSS_SECTION_LINES)
143 .addScalar("km", StandardBasicTypes.DOUBLE)
144 .addScalar("x", StandardBasicTypes.DOUBLE)
145 .addScalar("y", StandardBasicTypes.DOUBLE)
146 .addScalar("csl_id", StandardBasicTypes.INTEGER);
147
148 sqlQuery
149 .setInteger("cs_id", getId())
150 .setDouble("from_km", startKm)
151 .setDouble("to_km", endKm);
152
153 List<Object []> results = sqlQuery.list();
154
155 ArrayList<Point2D> points = new ArrayList<Point2D>(500);
156 ArrayList<FastCrossSectionLine> lines =
157 new ArrayList<FastCrossSectionLine>();
158
159 Integer lastId = null;
160 Double lastKm = null;
161
162 for (Object [] result: results) {
163 Double km = (Double)result[0];
164 Double x = (Double)result[1];
165 Double y = (Double)result[2];
166 Integer id = (Integer)result[3];
167
168 if (lastId != null && !lastId.equals(id)) {
169 points.trimToSize();
170 FastCrossSectionLine line =
171 new FastCrossSectionLine(lastKm, points);
172 lines.add(line);
173 points = new ArrayList<Point2D>(500);
174 }
175
176 Point2D p = new Point2D.Double(x, y);
177
178 if (CrossSectionLine.isValid(p)) {
179 points.add(p);
180 }
181
182 lastKm = km;
183 lastId = id;
184 }
185
186 if (lastId != null) {
187 points.trimToSize();
188 FastCrossSectionLine line =
189 new FastCrossSectionLine(lastKm, points);
190 lines.add(line);
191 }
192
193 lines.trimToSize();
194
195 return lines;
196 }
197 }
198 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
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