The document discusses using SQLite as an embedded SQL database in Adobe AIR applications. SQLite allows storing data in a single file without a separate server. Key features covered include connecting to a SQLite database, executing SQL queries and statements, handling results, and using transactions. The document also provides examples of basic usage and links to additional SQLite resources.

1. SQLite in Adobe AIR
Peter Elst | May 23th 2008 - 2M08

2. Why SQLite in Adobe AIR?

3. Why SQLite in Adobe AIR?

4. Why Koen?

5. Why Koen?

6. Why SQLite in Adobe AIR?

7. Why SQLite in Adobe AIR?
Embedded SQL Database Engine

8. Why SQLite in Adobe AIR?
Embedded SQL Database Engine
Implements most of SQL92

9. Why SQLite in Adobe AIR?
Embedded SQL Database Engine
Implements most of SQL92
Light-weight, cross-platform, open source

10. Why SQLite in Adobe AIR?
Embedded SQL Database Engine
Implements most of SQL92
Light-weight, cross-platform, open source
No setup, configuration or server required

11. Why SQLite in Adobe AIR?
Embedded SQL Database Engine
Implements most of SQL92
Light-weight, cross-platform, open source
No setup, configuration or server required
Each database is contained within a single file

12. How do you use it?

13. How do you use it?
1.Create a File reference

14. How do you use it?
1.Create a File reference
2.Create an instance of flash.data.SQLConnection and
flash.data.SQLStatement

15. How do you use it?
1.Create a File reference
2.Create an instance of flash.data.SQLConnection and
flash.data.SQLStatement
3.Open the database connection

16. How do you use it?
1.Create a File reference
2.Create an instance of flash.data.SQLConnection and
flash.data.SQLStatement
3.Open the database connection
4.Specify the connection and SQL query to run

17. How do you use it?
1.Create a File reference
2.Create an instance of flash.data.SQLConnection and
flash.data.SQLStatement
3.Open the database connection
4.Specify the connection and SQL query to run
5.Run SQLStatement.execute()

18. How do you use it?

19. How do you use it?
import flash.filesystem.File;
import flash.data.*;
var dbFile:File = File.applicationStorageDirectory. ↵
resolvePath(quot;contacts.dbquot;);

20. How do you use it?
import flash.filesystem.File;
import flash.data.*;
var dbFile:File = File.applicationStorageDirectory. ↵
resolvePath(quot;contacts.dbquot;);
var sqlConn:SQLConnection = new SQLConnection();
var sqlStatement:SQLStatement = new SQLStatement();

21. How do you use it?
import flash.filesystem.File;
import flash.data.*;
var dbFile:File = File.applicationStorageDirectory. ↵
resolvePath(quot;contacts.dbquot;);
var sqlConn:SQLConnection = new SQLConnection();
var sqlStatement:SQLStatement = new SQLStatement();
sqlConn.open(dbFile);

22. How do you use it?
import flash.filesystem.File;
import flash.data.*;
var dbFile:File = File.applicationStorageDirectory. ↵
resolvePath(quot;contacts.dbquot;);
var sqlConn:SQLConnection = new SQLConnection();
var sqlStatement:SQLStatement = new SQLStatement();
sqlConn.open(dbFile);
sqlStatement.sqlConnection = sqlConn;
sqlStatement.text = quot;SELECT * FROM contactsquot;;

23. How do you use it?
import flash.filesystem.File;
import flash.data.*;
var dbFile:File = File.applicationStorageDirectory. ↵
resolvePath(quot;contacts.dbquot;);
var sqlConn:SQLConnection = new SQLConnection();
var sqlStatement:SQLStatement = new SQLStatement();
sqlConn.open(dbFile);
sqlStatement.sqlConnection = sqlConn;
sqlStatement.text = quot;SELECT * FROM contactsquot;;
sqlStatement.execute();
var result:Array = sqlStatement.getResult().data;

24. Synchronous versus Async

25. Synchronous versus Async
Synchronous - blocks application until result is available
var sqlConn:SQLConnection = new SQLConnection();
sqlConn.open(dbFile);
var result:SQLResult = sqlConn.getResult().result;

26. Synchronous versus Async
Synchronous - blocks application until result is available
var sqlConn:SQLConnection = new SQLConnection();
sqlConn.open(dbFile);
var result:SQLResult = sqlConn.getResult().result;
Asynchronous - uses events and event listeners
var sqlConn:SQLConnection = new SQLConnection();
sqlConn.addEventListener(SQLResultEvent.RESULT, onSQLResult);
sqlConn.addEventListener(SQLResultEvent.ERROR,onSQLError);
sqlConn.openAsync(dbFile);

27. flash.data.SQLConnection

28. flash.data.SQLConnection
Connects to the database file

29. flash.data.SQLConnection
Connects to the database file
Provides events for asynchronous use

30. flash.data.SQLConnection
Connects to the database file
Provides events for asynchronous use
Schema access

31. flash.data.SQLStatement

32. flash.data.SQLStatement
Executes a SQL query on the specified database
connection

33. flash.data.SQLStatement
Executes a SQL query on the specified database
connection
Provides events for asynchronous use

34. flash.data.SQLStatement
Executes a SQL query on the specified database
connection
Provides events for asynchronous use
Supports result paging

35. Storage types

36. Storage types
NULL - NULL value (null)

37. Storage types
NULL - NULL value (null)
INTEGER - signed integer (int)

38. Storage types
NULL - NULL value (null)
INTEGER - signed integer (int)
REAL - floating point (Number)

39. Storage types
NULL - NULL value (null)
INTEGER - signed integer (int)
REAL - floating point (Number)
TEXT - UTF16 text string (String)

40. Storage types
NULL - NULL value (null)
INTEGER - signed integer (int)
REAL - floating point (Number)
TEXT - UTF16 text string (String)
BLOB - blob of data

41. SQLStatement Parameters

42. SQLStatement Parameters
The parameters feature protects your SQL statements
from SQL injection
var sqlStatement:SQLStatement = new SQLStatement();
sqlStatement.sqlConnection = sqlConn;
sqlStatement.text = quot;SELECT * FROM contacts WHERE id = @IDquot;;
sqlStatement.parameters[quot;@IDquot;] = someVariable;
sqlStatement.execute();

43. SQLStatement Parameters
The parameters feature protects your SQL statements
from SQL injection
var sqlStatement:SQLStatement = new SQLStatement();
sqlStatement.sqlConnection = sqlConn;
sqlStatement.text = quot;SELECT * FROM contacts WHERE id = @IDquot;;
sqlStatement.parameters[quot;@IDquot;] = someVariable;
sqlStatement.execute();
You can use the @ or : character to denote a
parameter to be replaced
sqlStatement.parameters[quot;:NAMEquot;] = someVariable;

44. SQLStatement Parameters

45. SQLStatement Parameters
Using the ? character you can have unnamed
parameters and an index based array
var sqlStatement:SQLStatement = new SQLStatement();
sqlStatement.sqlConnection = sqlConn;
sqlStatement.text = quot;SELECT * FROM contacts WHERE name = ? ↵
AND lastname = ?quot;;
sqlStatement.parameters[0] = quot;Peterquot;;
sqlStatement.parameters[1] = quot;Elstquot;;
sqlStatement.execute();

46. Result Paging

47. Result Paging
Paging allows you to limit the amount of rows you get
returned when doing a select operation
var sqlStatement:SQLStatement = new SQLStatement();
sqlStatement.sqlConnection = sqlConn;
sqlStatement.text = quot;SELECT * FROM contactsquot;;
sqlStatement.execute(10);

48. Result Paging
Paging allows you to limit the amount of rows you get
returned when doing a select operation
var sqlStatement:SQLStatement = new SQLStatement();
sqlStatement.sqlConnection = sqlConn;
sqlStatement.text = quot;SELECT * FROM contactsquot;;
sqlStatement.execute(10);
You can get the next batch of rows returned by calling
the next method on the SQLStatement instance
sqlStatement.next();

49. flash.data.SQLResult

50. flash.data.SQLResult
SQLResult.data - array of objects for each row
of the result

51. flash.data.SQLResult
SQLResult.data - array of objects for each row
of the result
SQLResult.complete - returns a boolean indicating
whether or not the full result was shown

52. flash.data.SQLResult
SQLResult.data - array of objects for each row
of the result
SQLResult.complete - returns a boolean indicating
whether or not the full result was shown
SQLResult.lastInsertRowID - return id for the last
row that was inserted

53. flash.data.SQLResult
SQLResult.data - array of objects for each row
of the result
SQLResult.complete - returns a boolean indicating
whether or not the full result was shown
SQLResult.lastInsertRowID - return id for the last
row that was inserted
SQLResult.rowsAffected - number of rows affected
by an insert, update or delete operation

54. Transactions

55. Transactions
Transactions allow multiple SQL statements to run
within one write operation to the database

56. Transactions
Transactions allow multiple SQL statements to run
within one write operation to the database
Much more optimized way of handling large insert
operations, allows rollback of the complete transaction
if an error occurs

57. Transactions

58. Transactions
var sqlStatement:SQLStatement = new SQLStatement();
sqlStatement.sqlConnection = sqlConn;
sqlStatement.text = quot;INSERT into contacts VALUES (@NAME, @EMAIL)quot;;

59. Transactions
var sqlStatement:SQLStatement = new SQLStatement();
sqlStatement.sqlConnection = sqlConn;
sqlStatement.text = quot;INSERT into contacts VALUES (@NAME, @EMAIL)quot;;
sqlConn.begin();

60. Transactions
var sqlStatement:SQLStatement = new SQLStatement();
sqlStatement.sqlConnection = sqlConn;
sqlStatement.text = quot;INSERT into contacts VALUES (@NAME, @EMAIL)quot;;
sqlConn.begin();
for(var i:uint=0; i<contacts.length; i++) {
sqlStatement.parameters[quot;@NAMEquot;] = contacts[i].name;
sqlStatement.parameters[quot;@EMAILquot;] = contacts[i].email;
sqlStatement.execute();
}

61. Transactions
var sqlStatement:SQLStatement = new SQLStatement();
sqlStatement.sqlConnection = sqlConn;
sqlStatement.text = quot;INSERT into contacts VALUES (@NAME, @EMAIL)quot;;
sqlConn.begin();
for(var i:uint=0; i<contacts.length; i++) {
sqlStatement.parameters[quot;@NAMEquot;] = contacts[i].name;
sqlStatement.parameters[quot;@EMAILquot;] = contacts[i].email;
sqlStatement.execute();
}
sqlConn.commit();

62. Database schema

63. Database schema
Allows you to introspect tables, views, columns,
indices, triggers
var sqlConn:SQLConnection = new SQLConnection();
sqlConn.open(dbFile);
sqlConn.loadSchema();
var result:SQLSchemaResult = sqlConn.getSchemaResult();
var table:SQLTableSchema = result.tables[0];
var column:SQLColumnSchema = table.columns[0];
trace(column.name);
// returns name of the first column in the first table

64. SQLite wrapper classes

65. SQLite wrapper classes
You can use ActionScript 3.0 classes as MXML tags

66. SQLite wrapper classes
You can use ActionScript 3.0 classes as MXML tags
SQLite and Query classes
<sql:SQLite id=quot;db_connquot; file=quot;contacts.dbquot;
open=quot;contacts_query.execute()quot; />
<sql:Query id=quot;contacts_queryquot; connection=quot;{db_conn}quot;
sql=quot;SELECT * FROM contactsquot; />
<mx:DataGrid id=quot;contacts_dgquot;
dataProvider=quot;{contacts_query.data}quot; />

67. SQLite synchronisation

68. SQLite synchronisation
Synchronizing an online and offline SQLite database

69. SQLite synchronisation
Synchronizing an online and offline SQLite database
Different strategies

70. SQLite synchronisation
Synchronizing an online and offline SQLite database
Different strategies
Online database overwrites offline

71. SQLite synchronisation
Synchronizing an online and offline SQLite database
Different strategies
Online database overwrites offline
Check timestamp on each row, new overwrites old

72. Demo time

73. Demo time
Contact Manager

74. Demo time
Contact Manager
SQLite Editor

75. Demo time
Contact Manager
SQLite Editor
YouTube Database

76. Demo time
Contact Manager
SQLite Editor
YouTube Database
HTML/JavaScript + SQLite

77. SQLite on Mac OSX

78. Resources

79. Resources
www.adobe.com/devnet/air/

80. Resources
www.adobe.com/devnet/air/
onair.adobe.com

81. Resources
www.adobe.com/devnet/air/
onair.adobe.com
www.30onair.com

82. Resources
www.adobe.com/devnet/air/
onair.adobe.com
www.30onair.com
www.peterelst.com

83. Resources
www.adobe.com/devnet/air/
onair.adobe.com
www.30onair.com
www.peterelst.com
Introduction to SQLite in Adobe AIR

84. Resources
www.adobe.com/devnet/air/
onair.adobe.com
www.30onair.com
www.peterelst.com
Introduction to SQLite in Adobe AIR
AIR Badge WordPress plugin

85. Contact me

86. Contact me
Questions, comments, feedback?

87. Contact me
Questions, comments, feedback?
Email: info@peterelst.com
Blog: www.peterelst.com
Twitter: www.twitter.com/peterelst
LinkedIn: www.linkedin.com/in/peterelst

88. Contact me
Questions, comments, feedback?
Email: info@peterelst.com
Blog: www.peterelst.com
Twitter: www.twitter.com/peterelst
LinkedIn: www.linkedin.com/in/peterelst
Thanks and enjoy the rest of the day!