72 lines
1.6 KiB
JavaScript
72 lines
1.6 KiB
JavaScript
var dot = require('dot');
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dot.templateSettings.strip = false;
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function BaseDataview() {}
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module.exports = BaseDataview;
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BaseDataview.prototype.getResult = function(psql, override, callback) {
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var self = this;
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this.sql(psql, override, function(err, query) {
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if (err) {
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return callback(err);
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}
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psql.query(query, function(err, result) {
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if (err) {
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return callback(err, result);
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}
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result = self.format(result, override);
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result.type = self.getType();
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return callback(null, result);
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}, true); // use read-only transaction
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});
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};
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BaseDataview.prototype.search = function(psql, userQuery, callback) {
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return callback(null, this.format({ rows: [] }));
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};
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var FLOAT_OIDS = {
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700: true,
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701: true,
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1700: true
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};
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var DATE_OIDS = {
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1082: true,
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1114: true,
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1184: true
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};
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var columnTypeQueryTpl = dot.template(
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'SELECT pg_typeof({{=it.column}})::oid FROM ({{=it.query}}) _cdb_column_type limit 1'
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);
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BaseDataview.prototype.getColumnType = function (psql, column, query, callback) {
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var readOnlyTransaction = true;
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var columnTypeQuery = columnTypeQueryTpl({
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column: column, query: query
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});
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psql.query(columnTypeQuery, function(err, result) {
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if (err) {
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return callback(err);
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}
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var pgType = result.rows[0].pg_typeof;
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callback(null, getPGTypeName(pgType));
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}, readOnlyTransaction);
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};
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function getPGTypeName (pgType) {
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return {
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float: FLOAT_OIDS.hasOwnProperty(pgType),
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date: DATE_OIDS.hasOwnProperty(pgType)
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};
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}
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