Mercurial > gemma
view pkg/models/sr.go @ 1290:ad528ad130d6
staging area: basic layout and selectionlogic
author | Thomas Junk <thomas.junk@intevation.de> |
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date | Thu, 22 Nov 2018 13:10:22 +0100 |
parents | bc4b642c8d04 |
children | 1c0c9190fcf2 |
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// This is Free Software under GNU Affero General Public License v >= 3.0 // without warranty, see README.md and license for details. // // SPDX-License-Identifier: AGPL-3.0-or-later // License-Filename: LICENSES/AGPL-3.0.txt // // Copyright (C) 2018 by via donau // – Österreichische Wasserstraßen-Gesellschaft mbH // Software engineering by Intevation GmbH // // Author(s): // * Sascha L. Teichmann <sascha.teichmann@intevation.de> // * Bernhard E. Reiter <bernhard.reiter@intevation.de> package models import ( "context" "database/sql" "encoding/json" "errors" "fmt" "io" "time" ) const ( SoundingResultDateFormat = "2006-01-02" WGS84 = 4326 ) type ( SoundingResultDate struct{ time.Time } SoundingResultMeta struct { Date SoundingResultDate `json:"date"` Bottleneck string `json:"bottleneck"` EPSG uint `json:"epsg"` DepthReference string `json:"depth-reference"` } ) const ( checkDepthReferenceSQL = ` SELECT true FROM depth_references WHERE depth_reference = $1` checkBottleneckSQL = ` SELECT true FROM waterway.bottlenecks WHERE objnam = $1` ) func (srd *SoundingResultDate) UnmarshalJSON(data []byte) error { var s string if err := json.Unmarshal(data, &s); err != nil { return err } d, err := time.Parse(SoundingResultDateFormat, s) if err == nil { *srd = SoundingResultDate{d} } return err } func (m *SoundingResultMeta) Decode(r io.Reader) error { err := json.NewDecoder(r).Decode(m) if err == nil && m.EPSG == 0 { m.EPSG = WGS84 } return err } func (m *SoundingResultMeta) Validate(conn *sql.Conn, ctx context.Context) []error { var errs []error var b bool err := conn.QueryRowContext(ctx, checkDepthReferenceSQL, m.DepthReference).Scan(&b) switch { case err == sql.ErrNoRows: errs = append(errs, fmt.Errorf("Unknown depth reference '%s'\n", m.DepthReference)) case err != nil: errs = append(errs, err) case !b: errs = append(errs, errors.New("Unexpected depth reference")) } err = conn.QueryRowContext(context.Background(), checkBottleneckSQL, m.Bottleneck).Scan(&b) switch { case err == sql.ErrNoRows: errs = append(errs, fmt.Errorf("Unknown bottleneck '%s'\n", m.Bottleneck)) case err != nil: errs = append(errs, err) case !b: errs = append(errs, errors.New("Unexpected bottleneck")) } return errs }