d14a4b69ab
Summary: Query Size Limit in Python, Java, JavaScript Reviewers: mferencevic, mislav.bradac, teon.banek Reviewed By: mferencevic, teon.banek Subscribers: pullbot, buda Differential Revision: https://phabricator.memgraph.io/D508
52 lines
1.7 KiB
JavaScript
52 lines
1.7 KiB
JavaScript
// Determines how long could be a query executed
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// from JavaScript driver.
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//
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// Performs binary search until the maximum possible
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// query size has found.
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// init driver
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var neo4j = require('neo4j-driver').v1;
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var driver = neo4j.driver("bolt://localhost:7687",
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neo4j.auth.basic("", ""),
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{ encrypted: 'ENCRYPTION_OFF' });
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// init state
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var property_size = 0;
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var min_len = 1;
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var max_len = 1000000;
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// hacking with JS and callbacks concept
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function serial_execution() {
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var next_size = [Math.floor((min_len + max_len) / 2)];
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setInterval(function() {
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if (next_size.length > 0) {
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property_size = next_size.pop();
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var query = "CREATE (n {name:\"" +
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(new Array(property_size)).join("a")+ "\"})";
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var session = driver.session();
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session.run(query, {}).then(function (result) {
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console.log("Success with the query length " + query.length);
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if (min_len == max_len || property_size + 1 > max_len) {
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console.log("\nThe max length of a query from JS driver is: " +
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query.length + "\n");
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session.close();
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driver.close();
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process.exit(0);
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}
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min_len = property_size + 1;
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next_size.push(Math.floor((min_len + max_len) / 2));
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}).catch(function (error) {
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console.log("Failure with the query length " + query.length);
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max_len = property_size - 1;
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next_size.push(Math.floor((min_len + max_len) / 2));
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}).then(function(){
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session.close();
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});
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}
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}, 100);
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}
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// execution
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console.log("\nDetermine how long can be a query sent from JavaScript driver.");
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serial_execution(); // I don't like JavaScript
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