61 lines
1.4 KiB
JavaScript
61 lines
1.4 KiB
JavaScript
/**
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* Driver for SQLite databases
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*
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* @module drivers/Sqlite
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*/
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module.exports = (() => {
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delete require.cache[require.resolve('../Driver')];
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let driver = require('../Driver');
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// Sqlite doesn't have a truncate command
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driver.hasTruncate = false;
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/**
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* SQL to insert a group of rows
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* Override default to have better compatibility
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*
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* @param {String} table - The table to insert to
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* @param {Array} [data] - The array of object containing data to insert
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* @return {String} - The generated sql statement
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*/
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driver.insertBatch = (table, data) => {
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// Get the data values to insert, so they can
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// be parameterized
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let sql = '';
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let first = data.shift();
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let vals = [];
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data.forEach(obj => {
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let row = [];
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Object.keys(obj).forEach(key => {
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row.push(obj[key]);
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});
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vals.push(row);
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});
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sql += `INSERT INTO ${driver.quoteTable(table)}\n`;
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// Get the field names from the keys of the first
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// object to be inserted
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let fields = Object.keys(first);
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let cols = [];
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fields.forEach(key => {
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cols.push(`'${driver._quote(first[key])}' AS ${driver.quoteIdentifiers(key)}`);
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});
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sql += `SELECT ${cols.join(', ')}\n`;
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vals.forEach(rowValues => {
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let quoted = rowValues.map(value => String(value).replace('\'', '\'\''));
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sql += `UNION ALL SELECT '${quoted.join('\', \'')}'\n`;
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});
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return {
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sql: sql,
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values: undefined
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};
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};
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return driver;
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})();
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