IagoLast
3850bbb68e
This commit creates a new ConfigAdapter used in vector maps instantiations. This adapter generates a new sql query for ONE SINGLE LAYER (carto-vl currently only supports one layer per mvt) where the date columns are wrapped into a epoch using the `date_part` function. Due this mvt files are smaller since we use numbers instead strings to represent dates, this is also faster in carto-gl where we interpolate linearly between 0 and 1 to create animations. Notice we should add a parameter to make this transformation optional. We also should take into account the epoch precission.
40 lines
1.4 KiB
JavaScript
40 lines
1.4 KiB
JavaScript
const AggregationMapConfig = require('../../aggregation/aggregation-mapconfig');
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const utilsService = require('../../../utils/get-column-types');
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// Generate query to detect time columns
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// For every column cast to unix timestamp
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module.exports = class VectorMapConfigAdapter {
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constructor(pgConnection) {
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this.pgConnection = pgConnection;
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}
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getMapConfig(user, requestMapConfig, params, context, callback) {
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let mapConfig;
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try {
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mapConfig = new AggregationMapConfig(user, requestMapConfig, this.pgConnection);
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} catch (err) {
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return callback(err);
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}
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if (!mapConfig.isVectorOnlyMapConfig()) {
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return callback(null, requestMapConfig);
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}
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if (requestMapConfig.layers.lenght > 1) {
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return callback(new Error('Get column types for multiple vector layers is not implemented'));
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}
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// // Get columns
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utilsService.getColumns(user, this.pgConnection, requestMapConfig.layers[0])
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.then(result => {
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const newSqlQuery = utilsService.wrapDates(requestMapConfig.layers[0].options.sql, result.fields);
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requestMapConfig.layers[0].options.sql = newSqlQuery;
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return callback(null, requestMapConfig);
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})
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.catch(err => {
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return callback(err);
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});
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}
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};
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