n8n-nodes-base
Version:
Base nodes of n8n
109 lines • 4.34 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.description = void 0;
exports.execute = execute;
const utilities_1 = require("../../../../../utils/utilities");
const utils_1 = require("../../helpers/utils");
const common_descriptions_1 = require("../common.descriptions");
const properties = [
{
displayName: 'Return All',
name: 'returnAll',
type: 'boolean',
default: false,
description: 'Whether to return all results or only up to a given limit',
displayOptions: {
show: {
resource: ['database'],
operation: ['select'],
},
},
},
{
displayName: 'Limit',
name: 'limit',
type: 'number',
default: 50,
description: 'Max number of results to return',
typeOptions: {
minValue: 1,
},
displayOptions: {
show: {
resource: ['database'],
operation: ['select'],
returnAll: [false],
},
},
},
common_descriptions_1.whereFixedCollection,
common_descriptions_1.combineConditionsCollection,
common_descriptions_1.sortFixedCollection,
...common_descriptions_1.optionsCollection,
];
const displayOptions = {
show: {
resource: ['database'],
operation: ['select'],
},
hide: {
table: [''],
},
};
exports.description = (0, utilities_1.updateDisplayOptions)(displayOptions, properties);
async function execute(runQueries, items, nodeOptions, pool) {
const queries = [];
const conn = await pool.getConnection();
const isCDBSupported = conn.oracleServerVersion >= 1200000000;
await conn.close();
for (let i = 0; i < items.length; i++) {
const schema = this.getNodeParameter('schema', i, undefined, {
extractValue: true,
});
const table = this.getNodeParameter('table', i, undefined, {
extractValue: true,
});
const tableSchema = await (0, utils_1.getColumnMetaData)(this.getNode(), pool, schema, table, i);
const columnMetaDataObject = (0, utils_1.getColumnMap)(tableSchema);
let values = [];
const outputColumns = this.getNodeParameter('options.outputColumns', i, ['*']);
let query = '';
let innerQuery = outputColumns.includes('*')
? `SELECT * FROM ${(0, utils_1.quoteSqlIdentifier)(schema)}.${(0, utils_1.quoteSqlIdentifier)(table)}`
: `SELECT ${outputColumns.map(utils_1.quoteSqlIdentifier).join(',')} FROM ${(0, utils_1.quoteSqlIdentifier)(schema)}.${(0, utils_1.quoteSqlIdentifier)(table)}`;
// Add WHERE clause
const whereClauses = this.getNodeParameter('where', i, []).values || [];
const combineConditions = this.getNodeParameter('combineConditions', i, 'AND');
[innerQuery, values] = (0, utils_1.addWhereClauses)(innerQuery, whereClauses, combineConditions, columnMetaDataObject);
// Add ORDER BY if needed
const sortRules = this.getNodeParameter('sort', i, []).values || [];
innerQuery = (0, utils_1.addSortRules)(innerQuery, sortRules);
// Handle LIMIT / pagination
const returnAll = this.getNodeParameter('returnAll', i, false);
if (!returnAll) {
const limit = this.getNodeParameter('limit', i, 50);
if (isCDBSupported) {
// Oracle 12c+ (FETCH FIRST)
query += `${innerQuery} FETCH FIRST ${limit} ROWS ONLY`;
}
else {
if (sortRules.length > 0 || whereClauses.length > 0) {
// Wrap inner query to preserve WHERE + ORDER BY
query = `SELECT * FROM (${innerQuery}) WHERE ROWNUM <= ${limit}`;
}
else {
// No ORDER BY or WHERE: safe to append ROWNUM inline
query = `${innerQuery} WHERE ROWNUM <= ${limit}`;
}
}
}
else {
// return all: no limit
query = innerQuery;
}
const queryWithValues = { query, values };
queries.push(queryWithValues);
}
return await runQueries(queries, items, nodeOptions);
}
//# sourceMappingURL=select.operation.js.map