Flex :: Querying SQLite Database With AIR App
Dec 13, 2010
I have been struggling with trying to interface with SQLite and Adobe AIR. I am using the Flex 4 SDK with AIR 2.0. I modified code from a tutorial by David Tucker on InsideRIA ([URL]). I am writing in FlashDevelop (which I suppose could be my problem), and I can compile and run the app. The issue is that when I go to search the db file, I always get some error which results in the 'BREAKER' trace (ie - the 'queryError' function is called). I have tried simply running the SQL command on the db and it works fine, so there is an issue somewhere in the way Flex or AIR is handling my query (or obviously I could have made a mistake in coding).
[Code]....
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Dec 17, 2009
I want to create a Flex 3 application running in Adobe Air that accesses an SQLite database and I need to keep this database in sync with an SQL server 2005 database running a website.Is this something that Flex supports or is it going to be a custom script? Also, has anybody done anything like this?
Edit: The synchronisation can be done on a daily basis rather than real time. The data will be read only from a front end perspective with a CMS to do updates on the website.
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Nov 16, 2010
I'm making an application (web based) using flex and i have a requirment to access the SQLite database on the local system. There is no server running and i've decided to give them the link to the html file and see how that works out.
So in the root directory, there will be all required swf, html files, etc and a .db file. Can i access that database thro the flex web application ?
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Feb 4, 2010
I'm using flex to develop my first desktop app and I'm working with sqlite for the first time as well. I'm creating my database and all the tables and I would also like to add a few rows of data into a couple of the tables so that the users have some data to work with on first install.
The only problem I'm having is every time I run the program it keeps inserting the same data over and over again. I'm just wondering if its possible to do a - INSERT INTO IF NOT EXISTS. or some other kind of work around.
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Aug 26, 2010
How can I create and use an encrypted SQLite database for an AIR application, please?
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Apr 26, 2011
Background: I am using SQLite database in my flex application. Size of the database is 4 MB and have 5 tables which are
table 1 have 2500 records
table 2 have 8700 records
table 3 have 3000 records
table 4 have 5000 records
table 5 have 2000 records.
Problem: Whenever I run a select query on any table, it takes around (approx 50 seconds) to fetch data from database tables. This has made the application quite slow and unresponsive while it fetches the data from the table.
How can i improve the performance of the SQLite database so that the time taken to fetch the data from the tables is reduced?
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Feb 27, 2011
I have a mobile application that uses an sqlite database. I cannot seem to figure out how to access the next record when the user presses the 'next' button. My database is using 'id' as primary key with autoincrement as integer.
private function nextMoveRPart(event:EffectEvent):void
{
var cardNumber:int = parseInt(cardNumberLabel.text);
[Code].....
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Sep 18, 2011
This article on Livedocs says you should add the database name in front of tables.[URL]..My question is, should I do that everywhere where a table name appears or only once?In this query: select T1.col,T2.col from T1 left join T2 on T1.id=T2.id order by T2.order;
Should I add main.T1 and main.T2 everywhere or just after for, the first time: select T1.col,T2.col from main.T1 left join main.T2 on T1.id=T2.id order by T2.order;
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Nov 9, 2010
I am wanting to try to use a sqlite database in my project.I have downloaded several sqlite managers from the internet and they all save the database with a sqlite extension.However I see in flash we use the db extension (is this correct?);How can I use the databases I create if they all save with a sqlite extension?
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Aug 30, 2010
I'm developing a desktop application in Flash, but I can't seem to find any tutorials that aren't based on FLEX to connect my application to a database file.
Do I have to write my application in FLEX to use SQLite or can I create an AIR app in Flash and still use it?
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Jan 12, 2011
I need to store a large amount of data that will be internally accessed often within a flash file. The database is temporary and does not need to be stored in an external file. Is it possible to use SQLite to create a database that may be used internally in flash? As far as access speeds are concerned, is this an efficient solution?
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Jan 14, 2012
I want to emded SQLite database (*.db file) to the AIR app, like images, mp3 etc.This is to ensure that it was impossible to copy my database for other users.
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Feb 2, 2012
I have a function that inserts data into a SQLite database. I can manually add data using
sqlStatement.text = "INSERT INTO users (First_Name, Last_Name) VALUES ('John', 'Doe')";
This works perfectly. Now I am trying to insert the data from a variable instead. I can trace my variable from this function- trace(Main._firstName); //returns John, but when I insert it using this:
sqlStatement.text = "INSERT INTO users (First_Name, Last_Name) VALUES (" + Main._firstName + ", 'Doe')";
it inserts it as "null Doe".
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Jan 10, 2012
I would like to have a Flash Application (not air) to connect to a local database. Air is not only getting unsupported by Adobe in LINUX but besides, it has serious problems and miss implementation with SQLite. So we want to connect to a local MySQL database. This application should be simple, so we do not want to also have an unnecessary web server (also local) to make a middle communication between the flash app and the MySQL server. There is this driver that allow to communicate Flash with MySQL [URL] Question is: Would it be any problem using this approach when installing the whole application to each client? (because we also in the installation should install a MySQL server).
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Feb 14, 2012
Im creating an sqlite db in my air for android app inside the following function:[code]i can successfully create tables, insert and select, but each time i re-publish the app from flash cs5.5 the database is overwritten and all data is lost. Totally stumped, any ideas welcome!i'm publishing a debug release directly from flash pro via usb. When the app is initialised it calls the method above, on receiving the OPEN event it creates a table using the following SQL statement.[code]I can then run some operations, insert, select etc and everything is as expected. If i exit and re-luanch the app, the previous data sets are intact, but when i re-publish from flash any data stored from the previous release has disappeared.According to the documentation SQLConnection.open() will open a connection to the file supplied in the parameters and if it doesn't exist, it will create one...
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Apr 2, 2012
Is it possible to open an sqlite file over http? I only need to read the db, and was hoping I could do something like:
var dbFile:File = new File("http://10.1.1.50/project/db.sqlite");
sqlConnection.open(dbFile);
Error #3125: Unable to open the database file.', details:'Connection closed.', operation:'open', detailID:'1001'
My situation calls for several apps compiled for various devices to share this file, which is served locally via wamp.
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Oct 4, 2011
I have this little piece of code to retrieve data from a local SQLite database (to an AIR app):
import flash.filesystem.File;
import flash.data.SQLConnection;
import flash.data.SQLStatement;
[Code]....
It is only a "proof of concept" piece of code and it "lives" in the first frame of the timeline of the Flash IDE. What happens? When I compile my SWF (AIR for iPhone), I get this error:
SQLError: 'Error #3115: SQL Error.', details:'no such table: 'background'', operation:'execute', detailID:'2013'
I created a basic db with a Firefox extension (SQLiteManager). What can cause this error? The table exists!
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Jun 24, 2010
I m trying a make a database on sqlite using actionscript3 and flex.I can browse through file and select a file using browseForOpen().I can get the url by Filename.url and storing it into a string type variable fileUrl:String.I m creating table like:
CREATE TABLE IF NOT EXISTS test_table (id INTEGER PRIMARY KEY AUTOINCREMENT,user_name TEXT,password TEXT ,fileurl TEXT)
i made a text input form for entering user_name and password like:
<mx:TextInput x="50" y="10" width="117" id="user_name"/>
<mx:TextInput x="50" y="10" width="117" id="password"/>
Now i want to insert values into the table like:
sqls.text = "INSERT INTO testt_table (user_name, password,fileurl) VALUES('"+user_name.text+"','"+password.text+"',fi leUrl);";
but its giving errors.How can I enter the url or path of the file chosen into the table.
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Dec 13, 2009
I have instantiated a class (class1) that loads some data via PHP in an AS3 Flex project.I instantiate class1, which is asynchronous and utilizes a URLLoader() to obtain its data.Then I would like to instantiate class2, which needs to USE the data from class1, but when I simply instantiate it I find that class1's instance variable is not populated yet because I am calling class2 too quickly.How can I create such a dependency that will link correctly?I am really new to using listeners, but I am imagining a listener in class2 might be what I need?Or maybe I can pass a reference to the listener in class1 into class2?I also know nothing about dispatching events... is this the key?Here's an example in pseudo code:
var class1:myC1 = new myC1("http://some/url/to/utilize");
//this never shows up because it hasn't loaded at the time i request it
trace("the stuff from class1 is: ", class1.myXMLList);
[code]....
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Jul 12, 2011
I'm trying to find out what the time is through a Date var and changing the hours in it.Does anyone know how to do that? I guess in pseudo-code i would like something like this:
function updateTime(d:Date)Void
{
Var nowTime:Date() = new Date();
[code].....
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Jun 7, 2010
I have researched this issue all over and most people say use the .refresh() method to update a datagrid after updating or adding a new record. This does not do anything. So, my issue is this. I have a mySQL database hosted I am connecting via PHP, I have 1 mxml file and 2 php files (I know I can use just 1 but I am learning and this was easier for me to use for troubleshooting). The issue is no matter what I change on the datagrid the update does not show on the datagrid unless I close out of IE and reopen it. I can refresh or open the page in another window and the update does not show. I have to exit entirely and restart in order for any updates or additions to show.Here is my licenseTracker.mxml
<?xml version="1.0" encoding="utf-8"?>
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark"
[code]....
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Aug 31, 2011
I have updated the mxml code to only show the needed code for the program to run the update.
I am new to Flex and have an issue I hope you all can help me out with.
I have researched this issue all over and most people say use the .refresh() method to update a datagrid after updating or adding a new record. This does not do anything.
So, my issue is this. I have a mySQL database hosted on 000webhost.com, I am connecting via PHP, I have 1 mxml file and 2 php files (I know I can use just 1 but I am learning and this was easier for me to use for troubleshooting). The issue is no matter what I change on the datagrid the update does not show on the datagrid unless I close out of IE and reopen it. I can refresh or open the page in another window and the update does not show. I have to exit entirely and restart in order for any updates or additions to show.
Here is my licenseTracker.mxml
<?xml version="1.0" encoding="utf-8"?>
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark"
[Code].....
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Jan 17, 2011
I am planning on using Flash Builder 4/Flex to write an AIR application which is primarily based around recording, storing and analyzing data.I'll be creating charts etc that need to update in almost real time.It's essential to me that the application be able to function without an internet connection so I need a local database of some variety,but I would also eventually like to build in online synchronization of the data where either database can be update each other based on newer information. Moreover, some type of encryption would definitely be welcome, and speed is a large concern
Synchronization: Primarily updates/additions/deletions will be done on the offline database, but ideally I want to have a web interface that will allow the same updates/additions/deletions and will be synced (beyond that I'm not sure exactly how to do it as I can model that based on what is most achievable).I'm wondering if there's any prebuilt engine that could handle the synchronization of 2 databases. I may end up having the web interface only be for additions, which would be significantly easier to sync.. and I may start that way, but i want to build with technologies that will best allow me to implement full online crud at some point.
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Sep 26, 2011
Here is the issue: a client wants his entire equipment inventory accessible by persons navigating to his jquery mobile site. The inventory that exists on the desktop site was, as I understood, built with Flex. Is it possible to access this database for the jquery mobile site? I believe it is. I was then given this information from someone in the know:
Database:
mlxx.db.xxxxxxx.hostedresource.com
login: mxxx
[code]...
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Jan 11, 2010
I am planning to develop a standalone application, which infact will be used for personal purposes. So only single user access may be there. I want to develop it in Flex. Just want some opinions from the gurus over here : Whether i should use Flex or AIR (I know only Flex, AIR i need to start learning)Which database i should use? SQLLite or HSQLDB or some other.
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Dec 30, 2009
I am creating an application in Flex that uses an embedded SQLite database. The data in the database contains quotes and other special characters which are escaped using a backslash or ''.Before I retrieve the data and render it in a Flex text area control I want to remove the ''. Is there any function in Flex which can help me do this - some equivalent of stripslashes() in PHP?
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Mar 14, 2010
I'm having a problem with an expression in my sql statement in SQLite for Adobe AIR basically I have this sql = "UPDATE uniforms SET status=@status WHERE customerId IN(19,20)"; updateStmt.parameters["@status"] = args[1]; updateStmt.execute();
if I run the above code it works, updating the status when the id are 19 and 20
but if I pass the ids list as a parameter like this
sql = "UPDATE uniforms SET status=@status WHERE customerId IN(@ids)";
updateStmt.parameters["@status"] = args[1];
updateStmt.parameters["@ids"] = "19,20";
updateStmt.execute();
it gives me and error, saying could not convert text value to numeric value, which make sense because I'm passing and string but the IN expression should convert it accordingly, like it does when I pass directly the list values, why is not working the other way,
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Aug 26, 2011
This link: [URL] has an interesting class to do just that! Encrypt an unencrypted database: but I'm having difficulty with a few things: You can find where the author, @probertson! Now I've got the following error: Compiler Error: Error #2044: Unhandled error:. text=Error #3125: Unable to open the database
Let me start by saying the source file works, since I've been using it (and the path) in another application. The error arises in the call to attach the source db to the newly created db.
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Jan 18, 2012
I can write to db when running in IDE(FB), while after packaging a air, the app wont write to sqlite db, Why?
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Mar 21, 2012
I try to display the Total sum() from a sqlStmt but all i got is [object, object], any idea how?
private function displayAmountHeading():void {
sqlStmt = new SQLStatement();
sqlStmt.sqlConnection = sqlConn;
sqlStmt.text = "SELECT SUM(Amount) FROM MainTable";
sqlStmt.execute();
[Code]...
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