Mercurial > gemma
annotate pkg/models/sr.go @ 2209:7ef7c3fd7383 pdf-export
import_waterwayprofiles: UI etd
author | Thomas Junk <thomas.junk@intevation.de> |
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date | Wed, 06 Feb 2019 15:17:42 +0100 |
parents | 6a67cd819e93 |
children | df6383831ad3 |
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 |
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26 type ( |
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27 SoundingResultMeta struct { |
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28 Date Date `json:"date"` |
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29 Bottleneck string `json:"bottleneck"` |
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30 EPSG uint `json:"epsg"` |
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31 DepthReference string `json:"depth-reference"` |
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32 } |
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33 ) |
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34 |
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35 const ( |
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36 checkDepthReferenceSQL = ` |
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37 SELECT true FROM depth_references WHERE depth_reference = $1` |
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38 |
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39 checkBottleneckSQL = ` |
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40 SELECT true FROM waterway.bottlenecks WHERE objnam = $1` |
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41 |
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42 checkBottleneckDateUniqueSQL = ` |
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43 SELECT true FROM waterway.sounding_results sr JOIN |
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44 waterway.bottlenecks bn ON sr.bottleneck_id = bn.id |
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45 WHERE bn.objnam = $1 AND sr.date_info = $2` |
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46 ) |
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47 |
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48 func (m *SoundingResultMeta) Decode(r io.Reader) error { |
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49 err := json.NewDecoder(r).Decode(m) |
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50 if err == nil && m.EPSG == 0 { |
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51 m.EPSG = WGS84 |
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52 } |
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53 return err |
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54 } |
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55 |
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56 func (m *SoundingResultMeta) Validate(ctx context.Context, conn *sql.Conn) []error { |
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57 |
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58 var errs []error |
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59 |
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60 var b bool |
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61 err := conn.QueryRowContext(ctx, |
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62 checkDepthReferenceSQL, |
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63 m.DepthReference).Scan(&b) |
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64 switch { |
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65 case err == sql.ErrNoRows: |
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66 errs = append(errs, fmt.Errorf("unknown depth reference '%s'", m.DepthReference)) |
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67 case err != nil: |
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68 errs = append(errs, err) |
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69 case !b: |
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70 errs = append(errs, errors.New("unexpected depth reference")) |
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71 } |
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72 |
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73 err = conn.QueryRowContext(ctx, |
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74 checkBottleneckSQL, |
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75 m.Bottleneck).Scan(&b) |
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76 switch { |
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77 case err == sql.ErrNoRows: |
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78 errs = append(errs, fmt.Errorf("unknown bottleneck '%s'", m.Bottleneck)) |
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79 case err != nil: |
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80 errs = append(errs, err) |
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81 case !b: |
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82 errs = append(errs, errors.New("unexpected bottleneck")) |
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83 } |
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84 |
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85 err = conn.QueryRowContext(ctx, |
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86 checkBottleneckDateUniqueSQL, |
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87 m.Bottleneck, m.Date.Time).Scan(&b) |
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88 switch { |
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89 case err == sql.ErrNoRows: // good! -> unique. |
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90 case err != nil: |
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91 errs = append(errs, err) |
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92 case b: |
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93 errs = append(errs, |
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94 errors.New("sounding result for this date already exists")) |
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95 } |
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96 |
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97 return errs |
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98 } |