SQLite - Dynamic Data in Titanium

SQLite &
Titanium
Who, How & Where

#TiLon London Titanium - Nov 2011 @ketan

Thursday, 1 December 2011

About

Ketan Majmudar

@ketan (twitter)

spiritquest.co.uk

stereoartist.com

freakshowuk.com



What is SQLite
SQLite is a software library that
implements a self-contained,
serverless,zero-conﬁguration, transactional
SQL database engine.

Serverless

Open Source

Compact



What is SQLite
implements a self-contained, SQLite is an embedded SQL
serverless,zero-conﬁguration, transactional database engine. Unlike most
SQL database engine. other SQL databases, SQLite
does not have a separate server
process. SQLite reads and writes
Serverless directly to ordinary disk ﬁles.

Open Source

Compact



What is SQLite
The code for SQLite is in the
public domain and is thus free
Serverless for use for any purpose,
commercial or private. SQLite is
Open Source currently found in more
applications than we can count
Compact including several high-proﬁle
projects.



What is SQLite

Serverless

Open Source
SQLite is a compact library.
Compact With all features enabled, the
library size can be less than
350KiB, depending on the target
platform and compiler
optimization settings.



SQL Brief History

Based on RDBMS - Relational
Database Management System based
around Edgar F. Codd’s Relational
Model

Implements most of the SQL-92
standard.

Written by D. Richard Hipp in 2000



Ti.Database
OPEN / INSTALL / REMOVE

EXECUTE Query

lastInsertRowId

rowsAffected

RESULT Sets

isValidRow

next



Table/DB Creation

Create In GUI/
Create In App Create via console
Preload

CREATE TABLE "tbl1" (
"id" integer NOT NULL PRIMARY KEY AUTOINCREMENT,
"rowValue" text
)

SQLite Database



Basic DB usage
// OPEN / INSTALL DATABASE -- SAFE
var db = Ti.Database.install('/mydata/dynamicdata.sqlite', 'dynamicdata');
// RESULT SET OBJECT
var rs = db.execute('select * from tbl1');
alert('Rows in table:' + rs.rowCount);
while(rs.isValidRow()){
Ti.API.info(rs.field(0) + ':' + rs.field(1));
rs.next();
}
rs.close();

db.execute('INSERT into tbl1 (rowValue) values(date("now"))');
alert('Last Insert ID:' + db.lastInsertRowId);

// CLOSE DATABASE OBJECT
db.close();

https://gist.github.com/1401196


TRANSACTION
// OPEN / INSTALL DATABASE -- SAFE
var db = Ti.Database.install('/mydata/dynamicdata.sqlite', 'dynamicdata');
// RESULT SET OBJECT
var rs = db.execute('select * from tbl1');
alert('Rows in table:' + rs.rowCount);
while(rs.isValidRow()){
Ti.API.info(rs.field(0) + ':' + rs.field(1));
rs.next();
}
rs.close();
db.execute('BEGIN TRANSACTION');
try{
db.execute('INSERT into tbl1 (rowValue) values(date("now"))');
db.execute('INSERT into tbl1 (rowValues) values(?)', new Date().getDate());
alert('Last Insert ID:' + db.lastInsertRowId);
} catch(e){
alert(e.message);
}
db.execute('END TRANSACTION');

// CLOSE DATABASE OBJECT
db.close();



Android SQLite
experiment
APK - download link:
https://dl.dropbox.com/s/8h951ltd80rdyig/app.apk?dl=1



SQLite Versions
What ships on a device: look at these tables. Supposedly ships with Android:

SQLite version Device OS SQLite version Device OS
3.5.9 Android 1.5-Cupcake
3.4.0 iPhone OS 2.2.1 3.5.9 Android 1.6-Donut
3.5.9 Android 2.1-Eclair
3.6.12 iPhone OS 3.0 / 3.1 3.6.22 Android 2.2-Froyo
3.6.22 Android 2.3.1-Gingerbread
3.6.22 iPhone OS 4.0 3.6.22 Android 2.3.3-Gingerbread
3.7.4 Android 3.0-Honeycomb
3.7.2 iPhone OS 4.3 3.7.4 Android 3.1-Honeycomb
3.7.4 Android 3.2-Honeycomb
3.7.7 iPhone OS 5.0 3.7.4 Android 4.0-Ice Cream Sandwich

3.5.9 2.1-update1 V9
3.6.22 2.2 HTC Desire
3.6.22 2.2.1 HTC Wildﬁre
3.6.22 2.2.1 HTC Magic
3.7.2 2.3.3 Desire HD
3.7.2 2.3.3 LG-P500
3.7.2 2.3.3 Desire HD
3.7.2 2.3.3 Nexus One
3.6.22 2.3.3 GT-I9100
3.7.2 2.3.3 HTC Wildﬁre S A510e
3.7.2 2.3.4 HTC Sensation Z710e
3.7.4 3.2 G100W
3.7.4 4.0.1 Galaxy Nexus


button1.addEventListener('click', function(){
var alertDialog = Ti.UI.createAlertDialog({
title: 'SQLite version check',
message: "You are running SQLite " + result.field(0) + " on: " + Ti.Platform.name
+ ' ' + Ti.Platform.version + ' ' + Ti.Platform.model + 'nnPlease consider emailing
this to me to build a reference resource of android OS to SQLite versions',
csvData: result.field(0) + "," + Ti.Platform.name + ',' + Ti.Platform.version +
',' + Ti.Platform.model+','+new Date().getTime(),
buttonNames: ['No Thanks', 'OK']
});
alertDialog.show();

alertDialog.addEventListener('click', function(e){
if(e.index === 1){
var emailKet = Ti.UI.createEmailDialog({
messageBody: 'Email Text',
toRecipients: ['info@spiritquest.co.uk'],
subject: 'SQLite android data gathering - London Titanium'
});
emailKet.open();
}
});
});
var db = Ti.Database.open('testData1');
var result = db.execute("SELECT sqlite_version();");



ORMs

Object Relational Mapping

Apps need to scale

joli.js - Codestrong talk by Xavier Lacot



SQLite thoughts
extension not required TRANSACTIONS &
ROLLBACKS
DB stored in application
data directory BLOBS in SQLite have
ROLLBACK protection.
BLOBS good for ﬁles
10-30Kb based on Good for cache
SQLite version management.

optimise ﬁelds:
INTEGERS, TEXT then
BLOB (table create
order)



SQLite Editors
Base

MesaSQLite

RazorSQL

SQLite Database
Browser

Firefox Browser
extension

Command Line



http://www.sqlite.org

http://wiki.appcelerator.org

http://developer.appcelerator.com/apidoc/mobile/latest/

http://www.sqlite.org/changes.html

@ketan on twitter - www.stereoartist.com/blog

Thank You


SQLite - Dynamic Data in Titanium

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