Mercurial > dive4elements > river

comparison backend/src/main/java/org/dive4elements/river/model/RiverAxis.java @ 8747:e9d912c97fa8

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We expect that every river has only one RiverAxis of kind 1 This allowed to reduce code duplication and some cleanups.
author Tom Gottfried <tom@intevation.de>
date Fri, 05 Jun 2015 16:56:47 +0200
parents 4c3ccf2b0304
children 5e38e2924c07
comparison
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8746:e701ef544ffa 8747:e9d912c97fa8
27 import org.hibernate.Query; 27 import org.hibernate.Query;
28 import org.hibernate.Session; 28 import org.hibernate.Session;
29 29
30 import org.hibernate.annotations.Type; 30 import org.hibernate.annotations.Type;
31 31
32 import org.apache.log4j.Logger;
33
32 /** 34 /**
33 * A river has one axis that is used for calculation. 35 * A river has one axis that is used for calculation.
34 * Additional axes of a river can be used to be painted int maps etc. 36 * Additional axes of a river can be used to be painted int maps etc.
35 * which one is the main river axis can be determined over the axis kind. 37 * which one is the main river axis can be determined over the axis kind.
36 */ 38 */
37 @Entity 39 @Entity
38 @Table(name = "river_axes") 40 @Table(name = "river_axes")
39 public class RiverAxis 41 public class RiverAxis
40 implements Serializable 42 implements Serializable
41 { 43 {
44 private static Logger log = Logger.getLogger(RiverAxis.class);
45
42 private Integer id; 46 private Integer id;
43 private AxisKind kind; 47 private AxisKind kind;
44 private River river; 48 private River river;
45 private String name; 49 private String name;
46 private MultiLineString geom; 50 private MultiLineString geom;
117 public void setGeom(MultiLineString geom) { 121 public void setGeom(MultiLineString geom) {
118 this.geom = geom; 122 this.geom = geom;
119 } 123 }
120 124
121 125
122 public static List<RiverAxis> getRiverAxis(String river)
123 throws IllegalArgumentException {
124 return getRiverAxis(river, KIND_CURRENT);
125 }
126
127 public static List<RiverAxis> getRiverAxis(String river, String name, int kind) 126 public static List<RiverAxis> getRiverAxis(String river, String name, int kind)
128 throws HibernateException { 127 throws HibernateException {
129 Session session = SessionHolder.HOLDER.get(); 128 Session session = SessionHolder.HOLDER.get();
130 Query query = session.createQuery( 129 Query query = session.createQuery(
131 "from RiverAxis as ax where river.name =:river" + 130 "from RiverAxis as ax where river.name =:river" +
137 136
138 List<RiverAxis> list = query.list(); 137 List<RiverAxis> list = query.list();
139 return list.isEmpty() ? null : list; 138 return list.isEmpty() ? null : list;
140 } 139 }
141 140
142 public static List<RiverAxis> getRiverAxis(String river, int kind) 141 public static RiverAxis getRiverAxis(String river)
143 throws HibernateException { 142 throws HibernateException {
144 Session session = SessionHolder.HOLDER.get(); 143 Session session = SessionHolder.HOLDER.get();
145 Query query = session.createQuery( 144 Query query = session.createQuery(
146 "from RiverAxis where river.name =:river AND kind.id =:kind"); 145 "from RiverAxis where river.name =:river AND kind.id =:kind");
147 query.setParameter("river", river); 146 query.setParameter("river", river);
148 query.setParameter("kind", kind); 147 query.setParameter("kind", KIND_CURRENT);
149 148
150 List<RiverAxis> list = query.list(); 149 List<RiverAxis> list = query.list();
151 return list.isEmpty() ? null : list; 150
151 /* We expect that every river has only one RiverAxis of kind 1
152 thow this is not currently enforced in database schema. */
153 if (list.size() > 1) {
154 log.error("River " + river + " has more than one current axis.");
155 }
156
157 return list.isEmpty() ? null : list.get(0);
152 } 158 }
153 } 159 }
154 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : 160 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
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