I am using fullfilment section on dialogflow on a fairly basic program I have started to show myself I can do a bigger project on dialogflow.
I have an object setup that is a dictionary.
I can make the keys a constant through
const KEYS=Object.keys(overflow);
I am going through the values using
if(KEYS.length>0){
var dictionary = overflow[keys[i]]
if I stringify dictionary using
JSON.stringify(item);
I get:
{"stack":"overflow","stack2":"overflowtoo", "stack3":3}
This leads me to believe I am actually facing a dictionary, hence the name of the variable.
I am accesing a string variable such as stack and unlike stack3
Everything I have read online tells me
dictionary.stack
Should work since
JSON.stringify(item);
Shows me:
{"stack":"overflow","stack2":"overflowtoo","stack3":3}
Whenever I:
Try to add the variable to the response string.
Append it to a string using output+=${item.tipo};
I get an error that the function crashed. I can replace it with the stringify line and it works and it gives me the JSON provided so the issue isnt there
Dictionary values are created as such before being accessed on another function:
dictionary[request.body.responseId]={
"stack":"overflow",
"stack2":"overflowtoo",
"stack3":3 };
Based on the suggestion here I saw that the properties where being accessed properly but their type was undefined. Going over things repeatedly I saw that the properties where defined as list rather than single values.
Dot notation works when they stop being lists.
Thanks for guiding me towards the problem.
I am trying to run a parameterised query using the npm module #google-cloud/bigquery.
Something like this:
SELECT * FROM myTable WHERE id IN (#ids);
I have no idea how bigQuery is expecting the parameter ids formatted.
My options.params look like something like this:
{ ids: '"1234", "4567"'}
But I don't get any result back. I know there are results, I can see them in bigquery and if I remove the parameter and just inject the string works just fine.
It seem pretty easy, but I can't figure out why it doesn't work, anyone who is willing to help me out?
Thank you in advance
Of course I found the solution as soon as I posted the question...
Thanks to this thread! Need to do some gymnastic...
So provided that the parameter is a string like:
'1234,5678'
We need to do:
WHERE id IN UNNEST(REGEXP_EXTRACT_ALL(#ids,"[0-9a-zA-Z]+"))
REGEXP_EXTRACT_ALL - returns an array
UNNEST - flattens the array for the IN clause as stated in the link above.
I've read through every stack overflow I can find and I don't understand why this still isn't working.
I'm trying to construct a NodeJS Mongo find query and very simply want to use a variable as the values, the key does not need to be dynamic.
This is the code I was working with initially :
collection.find({project_id : project_id_val})
but this simply returns :
Found the following records
[]
I've also tried constructing my own javascript object and passing that in e.g.
Query = {}
Query["project id"] = project_id_val
collection.find(query)
But that doesn't work either, I know the key/value pair is correct because
project_id: "12345" works absolutely fine, and returns exactly what I want it to. I feel like this should be very simple so if someone could let me know where I'm going wrong that would be great.
Thanks.
Ok, so I'm working with an ObservableList, which is working fine, but now I need to use the observable list to insert rows into and update rows in an SQL database table. I've found little info on working between JavaFX and SQL databases ... all the examples of data tables have the data created in the java code. I had hope when I saw "update SQL database" in this post:
Update sql database from FoxPro data on Glassfish server
but it was not applicable to my situation.
So the question is, how do I start the code to read from the ObservableList so I can run my SQL Insert statement? If you could point me to an example code where an ObservableList is used and an SQL table is created/added to/updated I would greatly appreciate it.
Thanks!
UPDATE TO QUESTION:
I can't really post relevant code here because the relevant parts are what I don't have. However, I'm thinking what I need to do is something like this:
mylist.moveToFirst();
while (mylist.next()) {
make connection // think I got it
INSERT INTO mytable (name, address, phone) VALUES (observablename, observableaddress, observablephone // think I got this as well
Obviously I'm applying my knowledge of other areas to ObservableList, but I am doing it to demonstrate what I don't know how to do with my ObservableList (mylist).
Again, thanks for any help.
Tying up loose ends today, and this question has not really been answered. I reposted a newer question with more specifics once I learned more about the situation, and that question also went unanswered, but I did figure it out, and posted an answer here: Understanding my ObservableList.
However, to be neat and tidy, let me post here some code to help me remember, as well as help anyone else who looks at this question and says, "YES, BUT WHAT IS THE SOLUTION?!?!?"
Generically, it looks something like this:
I like to open my connection and prepare my statement(s) first.
Use the iterator to get the variables from the list
within the iterator, add the variables to the prepared statement and execute.
I read somewhere about batch execution of statements, but with as few updates as I'm doing with each list, that seemed too complicated, so I just do each update individually within the iterator.
Specifically, here is some code:
Connection con;
con = [your connection string]; // I actually keep my connection string in its own class
// and just call it (OpenDB.connect()). This way I can swap out the class OpenDB
// for whatever database I'm using (MySQL, MS Access, etc.) and I don't have to
// change a bunch of connection strings in other classes.
PreparedStatement pst;
String insertString = "INSERT INTO People (Name, Address, Phone) VALUES (?, ?, ?)";
pst = con.prepareStatement(insertString);
for(Person p : mylist) { // read as: for each Person [a data model defined in a class
// named Person] which in this set of statements we shall call 'p' within the list
// previously defined and named 'mylist' ... or "For each Person 'p' in 'mylist'"
String name = p.name.get(); // get the name which corresponds to the Person in this object of 'mylist'
String address = p.address.get(); // ditto, address
Integer phone = p.phone.get(); // ditto, phone. Did as integer here to show how to add to pst below
pst.setString(1, name); // replace question mark 1 with value of 'name'
pst.setString(2, address); // ditto, 2 and 'address'
pst.setInt(3, phone); // ditto, 3 and 'phone'
pst.executeUpdate();
And that's how I did it. Not sure if it's the 'proper' way to do it, but it works. Any input is welcomed, as I'm still learning.
In JavaFX you usually get to be the person to create the example :)
ObservableList supports listeners, these receive events which tell you what has been added or updated by default. There is a good example in the javadocs here.
To get update events you need to provide an 'extractor' to the method creating the list here. This should take an instance of the object in the list and provide an array of the properties you want to listen to.
Try this:
SQLEXEC(lnConn, "Update INVENTORY SET brand = ?_brand, model = ?_model, code =?_code, timestamp =?_datetime where recno=?_id ")
Say I have a hash where a nested property could change.
"key1": {
"prop1": {
"subprop1": "could_change"
}
}
If I get sent the info that prop1.subprop1 has changed can I preform atomic updates on this property? Right now node_redis saves prop1 as a string that says '[object Object]'. If I JSON.stringify() the obj then I would need to retrieve the object, parse to object in memory, make the edit, and then stringify and save the object -- not knowing if something has changed in the mean time.
If I should be working with this data in a different way could someone please explain? I have an object with may nested attributes that I need to be able to update parts of, in addition to needing to retrieve as a whole object.
Thanks for any help!
Lua scripting or a lock pattern would solve your problem.
EVAL 'local obj = cjson.decode(redis.call("GET", "key1")); obj.prop1.subprop1 = ARGV[1]; redis.call("SET", "key1", cjson.encode(obj));' 0 "did_change"
You could even make something more advanced in Lua for editing any key's JSON subobjects if you wanted to.
Look at the Redis SETNX command docs for an example of how to use a lock.