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annotate pkg/models/sr.go @ 2961:5bc941d9ec43

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Fix checking of depth reference for sounding result Depth references have to match any depth reference associated with the bottlenecks reference gauge. However, these cannot necessarily be expected to be also in depth_references.
author Tom Gottfried <tom@intevation.de>
date Mon, 08 Apr 2019 16:27:37 +0200
parents df6383831ad3
children ec6163c6687d
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 // This is Free Software under GNU Affero General Public License v >= 3.0
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2 // without warranty, see README.md and license for details.
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3 //
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4 // SPDX-License-Identifier: AGPL-3.0-or-later
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5 // License-Filename: LICENSES/AGPL-3.0.txt
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6 //
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7 // Copyright (C) 2018 by via donau
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8 // – Österreichische Wasserstraßen-Gesellschaft mbH
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9 // Software engineering by Intevation GmbH
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10 //
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11 // Author(s):
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12 // * Sascha L. Teichmann <sascha.teichmann@intevation.de>
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13 // * Bernhard E. Reiter <bernhard.reiter@intevation.de>
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14
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15 package models
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16
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17 import (
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18 "context"
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19 "database/sql"
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20 "encoding/json"
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21 "errors"
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22 "fmt"
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23 "io"
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24
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25 "gemma.intevation.de/gemma/pkg/common"
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26 )
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27
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28 type (
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29 SoundingResultMeta struct {
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30 Date Date `json:"date"`
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31 Bottleneck string `json:"bottleneck"`
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32 EPSG uint `json:"epsg"`
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33 DepthReference string `json:"depth-reference"`
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34 }
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35 )
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36
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37 const (
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38 checkDepthReferenceSQL = `
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39 SELECT EXISTS(SELECT 1
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40 FROM waterway.bottlenecks bn
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41 JOIN waterway.gauges g ON g.location = bn.fk_g_fid
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42 JOIN waterway.gauges_reference_water_levels rl ON rl.gauge_id = g.location
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43 WHERE bn.objnam = $1
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44 AND rl.depth_reference = $2)`
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45
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46 checkBottleneckSQL = `
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47 SELECT true FROM waterway.bottlenecks WHERE objnam = $1`
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48
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49 checkBottleneckDateUniqueSQL = `
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50 SELECT true FROM waterway.sounding_results sr JOIN
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51 waterway.bottlenecks bn ON sr.bottleneck_id = bn.id
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52 WHERE bn.objnam = $1 AND sr.date_info = $2`
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53 )
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54
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55 func (m *SoundingResultMeta) Decode(r io.Reader) error {
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56 err := json.NewDecoder(r).Decode(m)
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57 if err == nil && m.EPSG == 0 {
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58 m.EPSG = WGS84
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59 }
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60 return err
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61 }
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62
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63 func (m *SoundingResultMeta) Validate(ctx context.Context, conn *sql.Conn) []error {
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64
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65 var errs []error
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66
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67 var b bool
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68 err := conn.QueryRowContext(ctx,
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69 checkBottleneckSQL,
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70 m.Bottleneck).Scan(&b)
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71 switch {
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72 case err == sql.ErrNoRows:
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73 errs = append(errs, fmt.Errorf("unknown bottleneck '%s'", m.Bottleneck))
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74 case err != nil:
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75 errs = append(errs, err)
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76 case !b:
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77 errs = append(errs, errors.New("unexpected bottleneck"))
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78 }
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79
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80 err = conn.QueryRowContext(ctx,
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81 checkDepthReferenceSQL,
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82 m.Bottleneck,
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83 m.DepthReference).Scan(&b)
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84 switch {
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85 case !b:
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86 errs = append(errs,
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87 fmt.Errorf("unknown depth reference '%s'", m.DepthReference))
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88 case err != nil:
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89 errs = append(errs, err)
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90 }
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91
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92 err = conn.QueryRowContext(ctx,
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93 checkBottleneckDateUniqueSQL,
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94 m.Bottleneck, m.Date.Time).Scan(&b)
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95 switch {
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96 case err == sql.ErrNoRows: // good! -> unique.
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97 case err != nil:
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98 errs = append(errs, err)
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99 case b:
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100 errs = append(errs,
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101 fmt.Errorf("sounding result for date %s already exists at bottleneck '%s'",
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102 m.Date.Time.Format(common.DateFormat),
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103 m.Bottleneck))
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104 }
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105
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106 return errs
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107 }