Mercurial > dive4elements > river

annotate flys-aft/src/main/java/de/intevation/aft/WQDiff.java @ 5200:42bb6ff78d1b 2.9.11

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Directly set the connectionInitSqls on the datasource Somehow the factory fails to set the connectionInitSqls if we add it to the dbcpProperties. So we now set it directly
author Andre Heinecke <aheinecke@intevation.de>
date Fri, 08 Mar 2013 11:48:33 +0100
parents f939e1e6cfa4
children
rev   line source
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1 package de.intevation.aft;
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2
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3 import de.intevation.db.ConnectedStatements;
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4 import de.intevation.db.SymbolicStatement;
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5
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6 import java.sql.ResultSet;
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7 import java.sql.SQLException;
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8
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9 import java.util.Collection;
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10 import java.util.Iterator;
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11 import java.util.Set;
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12 import java.util.TreeSet;
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13
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14 public class WQDiff
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15 {
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16 protected Set<WQ> toAdd;
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17 protected Set<WQ> toDelete;
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18
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19 public WQDiff() {
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20 }
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21
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22 public WQDiff(Collection<WQ> a, Collection<WQ> b) {
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23 toAdd = new TreeSet<WQ>(WQ.EPS_CMP);
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24 toDelete = new TreeSet<WQ>(WQ.EPS_CMP);
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25 build(a, b);
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26 }
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27
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28 public void build(Collection<WQ> a, Collection<WQ> b) {
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29 toAdd.addAll(b);
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30 toAdd.removeAll(a);
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31
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32 toDelete.addAll(a);
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33 toDelete.removeAll(b);
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34 }
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35
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36 public void clear() {
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37 toAdd.clear();
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38 toDelete.clear();
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39 }
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40
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41 public Set<WQ> getToAdd() {
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42 return toAdd;
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43 }
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44
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45 public void setToAdd(Set<WQ> toAdd) {
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46 this.toAdd = toAdd;
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47 }
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48
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49 public Set<WQ> getToDelete() {
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50 return toDelete;
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51 }
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52
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53 public void setToDelete(Set<WQ> toDelete) {
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54 this.toDelete = toDelete;
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55 }
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56
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57 public boolean hasChanges() {
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58 return !(toAdd.isEmpty() && toDelete.isEmpty());
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59 }
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60
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61 public void writeChanges(
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62 SyncContext context,
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63 int tableId
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64 )
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65 throws SQLException
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66 {
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67 ConnectedStatements flysStatements = context.getFlysStatements();
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68
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69 // Delete the old entries
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70 if (!toDelete.isEmpty()) {
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71 SymbolicStatement.Instance deleteDTV =
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72 flysStatements.getStatement("delete.discharge.table.value");
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73 for (WQ wq: toDelete) {
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74 deleteDTV
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75 .clearParameters()
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76 .setInt("id", wq.getId())
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77 .execute();
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78 }
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79 }
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80
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81 // Add the new entries.
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82 if (!toAdd.isEmpty()) {
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83 SymbolicStatement.Instance nextId =
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84 flysStatements.getStatement("next.discharge.table.values.id");
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85
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86 SymbolicStatement.Instance insertDTV =
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87 flysStatements.getStatement("insert.discharge.table.value");
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88
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89 // Recycle old ids as much as possible.
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90 Iterator<WQ> oldIds = toDelete.iterator();
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91
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92 // Create ids for new entries.
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93 for (WQ wq: toAdd) {
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94 if (oldIds.hasNext()) {
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95 wq.setId(oldIds.next().getId());
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96 }
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97 else {
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98 ResultSet rs = nextId.executeQuery();
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99 rs.next();
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100 wq.setId(rs.getInt("discharge_table_values_id"));
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101 rs.close();
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102 }
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103 }
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104
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105 // Write the new entries.
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106 for (WQ wq: toAdd) {
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107 insertDTV
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108 .clearParameters()
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109 .setInt("id", wq.getId())
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110 .setInt("table_id", tableId)
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111 .setDouble("w", wq.getW())
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112 .setDouble("q", wq.getQ())
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113 .execute();
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114 }
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115 }
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116 }
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117 }
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118 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org