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copying nodes with labels and properties - hacky
// requires cypher-rest
// npm i cypher-rest
// gist for http://stackoverflow.com/questions/35191765/how-can-we-copy-labels-from-one-node-to-another-in-one-cypher
'use strict';
const util = require('util');
const c = require('cypher-rest');
const neoUrl = 'http://127.0.0.1:7474/db/data/transaction/commit';
const copyNode = propertyObjMatch => {
return new Promise((resolve, reject) => {
// find node(s) via property matching and return it(/them)
const cypher = `MATCH (x ${util.inspect(propertyObjMatch)}) RETURN DISTINCT x, LABELS(x) AS labels`;
return c.run(cypher, neoUrl, true) // third parameter set to true to always return a list of results
.then(results => {
// iterate over results and create a copy one by one
results.forEach(result => {
const copy = `CREATE (copy:${[...result.labels].join(':')}) SET copy = ${util.inspect(result.x)} RETURN copy`;
c.run(copy, neoUrl);
});
})
});
};
// create a node
c.run('CREATE (x:LABEL1:LABEL2 {withProp: "and value", anotherProp: "test"}) RETURN x', neoUrl).then(() => {
copyNode({withProp: 'and value', anotherProp: 'test'})
.then(console.log)
});
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