Mercurial > gemma
annotate pkg/models/isrs.go @ 3277:232fc90e6ee2
Disentangle gauge measurements and predictions
Representing both in one table has led to the necessity to make the
distinction at many places such as statements, definitions of partial
indexes and application code. At least in one place in the AGM
import the distinction in application code was too late and
measurements matching an approved measurement could have been missed.
author | Tom Gottfried <tom@intevation.de> |
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date | Wed, 15 May 2019 19:08:49 +0200 |
parents | 6ffc372cde1e |
children | 4a7c2140e44b |
rev | line source |
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1900
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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 // * Raimund Renkert <raimund.renkert@intevation.de> |
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13 // * Sascha L. Teichmann <sascha.teichmann@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 "encoding/json" |
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19 "errors" |
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20 "fmt" |
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21 "strconv" |
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22 ) |
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23 |
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24 // Isrs represents the gauge identification data structure |
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25 type Isrs struct { |
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26 CountryCode string |
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27 LoCode string |
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28 FairwaySection string |
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29 Orc string |
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30 Hectometre int |
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31 } |
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32 |
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33 func (isrs *Isrs) UnmarshalJSON(data []byte) error { |
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34 var s string |
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35 if err := json.Unmarshal(data, &s); err != nil { |
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36 return err |
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37 } |
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38 in, err := IsrsFromString(s) |
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39 if err != nil { |
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40 return err |
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41 } |
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42 *isrs = *in |
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43 return nil |
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44 } |
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45 |
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46 func (isrs *Isrs) MarshalJSON() ([]byte, error) { |
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47 if isrs == nil { |
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48 return nil, nil |
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49 } |
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50 return json.Marshal(isrs.String()) |
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51 } |
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52 |
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53 // IsrsFromString converts string representation of isrs code to type Isrs |
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54 func IsrsFromString(isrsCode string) (*Isrs, error) { |
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55 if len(isrsCode) < 20 { |
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56 return nil, errors.New("ISRS code too short") |
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57 } |
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58 hm, err := strconv.Atoi(isrsCode[15:20]) |
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59 if err != nil { |
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60 return nil, err |
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61 } |
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62 isrs := Isrs{ |
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63 CountryCode: isrsCode[0:2], |
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64 LoCode: isrsCode[2:5], |
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65 FairwaySection: isrsCode[5:10], |
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66 Orc: isrsCode[10:15], |
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67 Hectometre: hm, |
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68 } |
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69 return &isrs, nil |
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70 } |
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71 |
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72 // String creates a isrs code string from Isrs |
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73 func (isrs *Isrs) String() string { |
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74 return fmt.Sprintf("%s%s%s%s%05d", |
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75 isrs.CountryCode, |
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76 isrs.LoCode, |
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77 isrs.FairwaySection, |
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78 isrs.Orc, |
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79 isrs.Hectometre) |
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80 } |