106 lines
2.8 KiB
JavaScript
106 lines
2.8 KiB
JavaScript
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/**
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* contains data for a sql view
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* var s = new cdb.admin.SQLViewData({ sql : "select...." });
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* s.fetch();
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*/
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cdb.admin.SQLViewData = cdb.admin.CartoDBTableData.extend({
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UNDEFINED_TYPE_COLUMN: 'undefined',
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initialize: function(models, options) {
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this.model.prototype.idAttribute = 'cartodb_id';
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// this.elder('initialize', models, options);
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cdb.admin.CartoDBTableData.prototype.initialize.call(this, models, options);
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this.bind('error', function() {
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this.reset([]);
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});
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//this.initOptions();
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if(options && options.sql) {
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this.setSQL(options.sql);
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}
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},
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_parseSQL: function(sql) {
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sql = sql.replace(/([^\\]){x}/g, '$10').replace(/\\{x}/g, '{x}')
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sql = sql.replace(/([^\\]){y}/g, '$10').replace(/\\{y}/g, '{y}')
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sql = sql.replace(/([^\\]){z}/g, '$10').replace(/\\{z}/g, '{z}')
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// Substitute mapnik tokens
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// resolution at zoom level 0
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var res = '156543.03515625';
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// full webmercator extent
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var ext = 'ST_MakeEnvelope(-20037508.5,-20037508.5,20037508.5,20037508.5,3857)';
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sql = sql.replace('!bbox!', ext)
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.replace('!pixel_width!', res)
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.replace('!pixel_height!', res);
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return sql
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},
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sqlSource: function() {
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return this.options.get('sql_source');
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},
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setSQL: function(sql, opts) {
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opts = opts || {}
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// reset options whiout changing raising a new fetchs
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this.options.set({
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page: 0,
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sort_order: 'asc',
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order_by: '',
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filter_column: '',
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filter_value: '',
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sql_source: opts.sql_source || null
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}, { silent: true } );
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var silent = opts.silent;
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opts.silent = true;
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this.options.set({ sql : sql ? this._parseSQL(sql): '' }, opts);
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if(!silent) {
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this.options.trigger('change:sql', this.options, sql);
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}
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},
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getSQL: function() {
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return this.options.get('sql');
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},
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url: function() {
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return this.sqlApiUrl();
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},
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isReadOnly: function() {
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return this.sqlSource() !== 'filters';
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},
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quartiles: function(nslots, column, callback, error) {
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var tmpl = _.template('SELECT quartile, max(<%= column %>) as maxAmount FROM (SELECT <%= column %>, ntile(<%= slots %>) over (order by <%= column %>) as quartile FROM (<%= sql %>) as _rambo WHERE <%= column %> IS NOT NULL) x GROUP BY quartile ORDER BY quartile');
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this._sqlQuery(tmpl({
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slots: nslots,
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sql: this.options.get('sql'),
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column: column
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}),
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function(data) {
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callback(_(data.rows).pluck('maxamount'));
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},
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error);
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},
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// returns if the query contains geo data
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isGeoreferenced: function() {
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return this.getGeometryTypes().length > 0;
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}
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/*url: function() {
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if(!this.sql) {
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throw "sql must be provided";
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}
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return '/api/v1/queries?sql=' +
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encodeURIComponent(this.sql) +
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'&limit=20&rows_per_page=40&page=0'
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}*/
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});
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