danielcraig23 Comments - Answer Overflow

Is this an acceptable way of making sequential writes? I am using async.retry to retry the promise returned by tx.commit(), similar to this example from Amazon: https://docs.aws.amazon.com/neptune/latest/userguide/lambda-functions-examples.html#lambda-functions-examples-javascript ``` const tx = g.tx(); try { // get the graph traversal source from the transaction const gtx = tx.begin();
gtx.addV("owner").property(id, "1111").iterate() gtx.addV("laptop").property(id, "macbookAir2024").property("yearReleased", 2024).iterate() gtx.V() .hasLabel('laptop') .has(t.id, textP.startingWith(partialMacbookId)) .order() .by('yearReleased', desc) .limit(1) .as("mostRecentMacbook") .mergeE( new Map([ [t.label, 'hasOwner'], [direction.out, merge.outV], [direction.in, merge.inV]] ) ) .option(merge.outV, .select('mostRecentMacbook')) .option(merge.inV, .V(ownerId)) .iterate(); return tx.commit(); } catch (error) { logger.error(error); // roll back the transaction return tx.rollback(); }

13 replies

ATApache TinkerPop

•Created by danielcraig23 on 4/18/2024 in #questions

.mergeV() with Javascript not working

The solution was to allow neptune to use the default mimetype; removing the mimetype header solved the issue

28 replies

ATApache TinkerPop

•Created by danielcraig23 on 5/9/2024 in #questions

Is the insertion order guaranteed with this example code?

Yes that's certainly true, for reasons of breaking up a series of several long .mergeV() and .mergeE()'s I want to use a transaction so that there's space in between.

13 replies

ATApache TinkerPop

•Created by danielcraig23 on 5/9/2024 in #questions

Using mergeE to create an edge with an id that depends on a lookup

I'm using Tinkerpop 3.6.2, where .concat() and .format() weren't yet added, and I'm using Neptune where lambdas aren't supported

8 replies

ATApache TinkerPop

•Created by danielcraig23 on 5/9/2024 in #questions

Using mergeE to create an edge with an id that depends on a lookup

gremlin> g.addV("owner").property(id, "1111")
gremlin> g.addV("laptop").property(id, "macbookAir2024").property("yearReleased", 2024)
gremlin> g.V().hasLabel('laptop').has(T.id, TextP.startingWith("macbookAir")).order().by('yearReleased', desc).limit(1).as("mostRecentMacbook").mergeE([(T.label): 'hasOwner', (from): Merge.outV, (to): Merge.inV]).option(Merge.outV, __.select('mostRecentMacbook')).option(Merge.inV, __.V('1111')).iterate();

gremlin> g.addV("owner").property(id, "1111")
gremlin> g.addV("laptop").property(id, "macbookAir2024").property("yearReleased", 2024)
gremlin> g.V().hasLabel('laptop').has(T.id, TextP.startingWith("macbookAir")).order().by('yearReleased', desc).limit(1).as("mostRecentMacbook").mergeE([(T.label): 'hasOwner', (from): Merge.outV, (to): Merge.inV]).option(Merge.outV, __.select('mostRecentMacbook')).option(Merge.inV, __.V('1111')).iterate();

8 replies

ATApache TinkerPop

•Created by danielcraig23 on 5/9/2024 in #questions

Using mergeE to create an edge with an id that depends on a lookup

Here is the script that I'm testing in gremlin console:

8 replies

ATApache TinkerPop

•Created by danielcraig23 on 5/8/2024 in #questions

Is tx.close() necessary in Javascript?

Thanks Valentyn

6 replies

ATApache TinkerPop

•Created by danielcraig23 on 5/8/2024 in #questions

Is tx.close() necessary in Javascript?

try {
  const gtx = tx.begin();

  gtx.mergeV(
          new Map([
              [t.id, 'exampleId'],
              [t.label, 'exampleLabel']
          ]))
          .option(merge.onCreate, new Map([['lastUpdatedTime', eventTimeStamp]]))
          .iterate();
           
        tx.commit();
} catch (error) {
    logger.error(error);
    // roll back the transaction
    tx.rollback();
}

try {
  const gtx = tx.begin();

  gtx.mergeV(
          new Map([
              [t.id, 'exampleId'],
              [t.label, 'exampleLabel']
          ]))
          .option(merge.onCreate, new Map([['lastUpdatedTime', eventTimeStamp]]))
          .iterate();
           
        tx.commit();
} catch (error) {
    logger.error(error);
    // roll back the transaction
    tx.rollback();
}

6 replies

ATApache TinkerPop

•Created by danielcraig23 on 4/18/2024 in #questions

.mergeV() with Javascript not working

Thank you!

28 replies

ATApache TinkerPop

•Created by danielcraig23 on 4/18/2024 in #questions

.mergeV() with Javascript not working

I provided some more details in an amazon case which I just created, can I send you that case #?

28 replies

ATApache TinkerPop

•Created by danielcraig23 on 4/18/2024 in #questions

.mergeV() with Javascript not working

ooh nice that's what I want to see

28 replies

ATApache TinkerPop

•Created by danielcraig23 on 4/18/2024 in #questions

.mergeV() with Javascript not working

so the problem remains

28 replies

ATApache TinkerPop

•Created by danielcraig23 on 4/18/2024 in #questions

.mergeV() with Javascript not working

So it seems that the map was populated after all, and my logging was just representing it as {}.

28 replies

ATApache TinkerPop

•Created by danielcraig23 on 4/18/2024 in #questions

.mergeV() with Javascript not working

Now I've updated my function to

async function query() {
    const vertexMatcher = new Map([
        ['label', 'person'],
        ['name', 'marko'],
        ['age', 31],
    ]);
    logger.info('vertexMatcher', { vertexMatcher });
    console.log(vertexMatcher);
    console.log(vertexMatcher.get('label'));
    return g.mergeV(vertexMatcher).next();
}

async function query() {
    const vertexMatcher = new Map([
        ['label', 'person'],
        ['name', 'marko'],
        ['age', 31],
    ]);
    logger.info('vertexMatcher', { vertexMatcher });
    console.log(vertexMatcher);
    console.log(vertexMatcher.get('label'));
    return g.mergeV(vertexMatcher).next();
}

and the logs show

{"level":"info","message":"Initializing connection to neptunedbcluster-XXXXX.cluster-csd4wx9xfzaj.us-east-1.neptune.amazonaws.com, port ZZZZ"}
2024-04-19T15:44:33.052Z    60819b7d-5dfc-40db-a3aa-4f1ebdc7cc9b    INFO    Map(3) { 'label' => 'person', 'name' => 'marko', 'age' => 31 }
{"level":"info","message":"vertexMatcher","vertexMatcher":{}}
2024-04-19T15:44:33.054Z    60819b7d-5dfc-40db-a3aa-4f1ebdc7cc9b    INFO    person
{"level":"info","message":"Result","result":{"done":false,"value":{"id":"9ac77b77-8872-5bc3-9388-659dbe6791d5","label":"vertex"}}}

{"level":"info","message":"Initializing connection to neptunedbcluster-XXXXX.cluster-csd4wx9xfzaj.us-east-1.neptune.amazonaws.com, port ZZZZ"}
2024-04-19T15:44:33.052Z    60819b7d-5dfc-40db-a3aa-4f1ebdc7cc9b    INFO    Map(3) { 'label' => 'person', 'name' => 'marko', 'age' => 31 }
{"level":"info","message":"vertexMatcher","vertexMatcher":{}}
2024-04-19T15:44:33.054Z    60819b7d-5dfc-40db-a3aa-4f1ebdc7cc9b    INFO    person
{"level":"info","message":"Result","result":{"done":false,"value":{"id":"9ac77b77-8872-5bc3-9388-659dbe6791d5","label":"vertex"}}}

28 replies

ATApache TinkerPop

•Created by danielcraig23 on 4/18/2024 in #questions

.mergeV() with Javascript not working

I'm not sure what /* @__PURE__ */ means

28 replies

ATApache TinkerPop

•Created by danielcraig23 on 4/18/2024 in #questions

.mergeV() with Javascript not working

As deployed in Lambda the code appears like this:

async function query() {
  const vertexMatcher = /* @__PURE__ */ new Map([[label, "person"], ["name", "marko"], ["age", 31]]);
  import_logging3.logger.info("vertexMatcher", { vertexMatcher });
  return g.mergeV(vertexMatcher).next();
}

async function query() {
  const vertexMatcher = /* @__PURE__ */ new Map([[label, "person"], ["name", "marko"], ["age", 31]]);
  import_logging3.logger.info("vertexMatcher", { vertexMatcher });
  return g.mergeV(vertexMatcher).next();
}

28 replies

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