38 lines
1.2 KiB
JavaScript
38 lines
1.2 KiB
JavaScript
'use strict';
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const queryUtils = require('../utils/query-utils');
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function OverviewsMetadataBackend(pgQueryRunner) {
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this.pgQueryRunner = pgQueryRunner;
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}
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module.exports = OverviewsMetadataBackend;
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OverviewsMetadataBackend.prototype.getOverviewsMetadata = function (username, sql, callback) {
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// FIXME: Currently using internal function _cdb_schema_name
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// CDB_Overviews should provide the schema information directly.
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const query = `
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SELECT *, _cdb_schema_name(base_table)
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FROM CDB_Overviews(
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CDB_QueryTablesText($windshaft$${queryUtils.substituteDummyTokens(sql)}$windshaft$)
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);
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`;
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this.pgQueryRunner.run(username, query, function handleOverviewsRows(err, rows) {
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if (err){
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callback(err);
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return;
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}
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var metadata = rows.reduce(function(metadata, row){
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var table = row.base_table;
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var schema = row._cdb_schema_name;
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if ( !metadata[table] ) {
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metadata[table] = {};
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}
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metadata[table][row.z] = { table: row.overview_table };
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metadata[table].schema = schema;
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return metadata;
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}, {});
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return callback(null, metadata);
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});
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};
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