Mercurial > gemma
annotate pkg/models/sr.go @ 2967:7c301ff449bc
Fairway availibility: Started with class building.
author | Sascha L. Teichmann <sascha.teichmann@intevation.de> |
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date | Mon, 08 Apr 2019 18:54:13 +0200 |
parents | 5bc941d9ec43 |
children | ec6163c6687d |
rev | line source |
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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 } |