Native interface to sqlite in a Cordova/PhoneGap plugin, working to follow the HTML5 Web SQL API as close as possible. NOTE that the API is now different from https://github.com/davibe/Phonegap-SQLitePlugin.
Created by @joenoon and @davibe
Adapted to Cordova 1.5+ by @coomsie, Cordova 1.6 bugfix by @mineshaftgap
Android version by @marcucio and @chbrody
API changes by @chbrody
- Keeps sqlite database in a known user data location that will be backed up by iCloud on iOS
- Drop-in replacement for HTML5 SQL API, the only change is window.openDatabase() --> sqlitePlugin.openDatabase()
- Both Android and iOS versions are designed with batch processing optimizations
- Future: API to configure the desired database location
The idea is to emulate the HTML5 SQL API as closely as possible. The only major change is to use window.sqlitePlugin.openDatabase() (or sqlitePlugin.openDatabase()) instead of window.openDatabase(). If you see any other major change please report it, it is probably a bug.
This is a pretty strong test: first we create a table and add a single entry, then query the count to check if the item was inserted as expected. Note that a new transaction is created in the middle of the first callback.
// Wait for Cordova to load
//
document.addEventListener("deviceready", onDeviceReady, false);
// Cordova is ready
//
function onDeviceReady() {
var db = window.sqlitePlugin.openDatabase("Database", "1.0", "PhoneGap Demo", 200000);
db.transaction(function(tx) {
tx.executeSql('DROP TABLE IF EXISTS test_table');
tx.executeSql('CREATE TABLE IF NOT EXISTS test_table (id integer primary key, data text, data_num integer)');
tx.executeSql("INSERT INTO test_table (data, data_num) VALUES (?,?)", ["test", 100], function(tx, res) {
console.log("insertId: " + res.insertId + " -- probably 1");
console.log("rowsAffected: " + res.rowsAffected + " -- should be 1");
db.transaction(function(tx) {
tx.executeSql("select count(id) as cnt from test_table;", [], function(tx, res) {
console.log("res.rows.length: " + res.rows.length + " -- should be 1");
console.log("res.rows.item(0).cnt: " + res.rows.item(0).cnt + " -- should be 1");
});
});
}, function(e) {
console.log("ERROR: " + e.message);
});
});
}
Android version only: In this case, the same transaction in the first executeSql() callback is being reused to run executeSql() again. This version will only work on the Android version and only if you make the following patch:
diff --git a/Android/assets/www/SQLitePlugin.js b/Android/assets/www/SQLitePlugin.js
index 51761ea..10b7595 100755
--- a/Android/assets/www/SQLitePlugin.js
+++ b/Android/assets/www/SQLitePlugin.js
@@ -59,7 +59,7 @@
this.trans_id = get_unique_id();
this.__completed = false;
this.__submitted = false;
- this.optimization_no_nested_callbacks = true;
+ this.optimization_no_nested_callbacks = false;
console.log("SQLitePluginTransaction - this.trans_id:" + this.trans_id);
transaction_queue[this.trans_id] = [];
transaction_callback_queue[this.trans_id] = new Object();
This case is (currently) not supported by the iOS version
// Wait for Cordova to load
//
document.addEventListener("deviceready", onDeviceReady, false);
// Cordova is ready
//
function onDeviceReady() {
var db = window.sqlitePlugin.openDatabase("Database", "1.0", "PhoneGap Demo", 200000);
db.transaction(function(tx) {
tx.executeSql('DROP TABLE IF EXISTS test_table');
tx.executeSql('CREATE TABLE IF NOT EXISTS test_table (id integer primary key, data text, data_num integer)');
tx.executeSql("INSERT INTO test_table (data, data_num) VALUES (?,?)", ["test", 100], function(tx, res) {
console.log("insertId: " + res.insertId + " -- probably 1");
console.log("rowsAffected: " + res.rowsAffected + " -- should be 1");
tx.executeSql("select count(id) as cnt from test_table;", [], function(tx, res) {
console.log("res.rows.length: " + res.rows.length + " -- should be 1");
console.log("res.rows.item(0).cnt: " + res.rows.item(0).cnt + " -- should be 1");
});
}, function(e) {
console.log("ERROR: " + e.message);
});
});
}
This case will also works with Safari (WebKit), assuming you replace window.sqlitePlugin.openDatabase with window.openDatabase.
NOTE: There are now the following trees:
iOSfor Cordova 1.5/1.6 iOSAndroid: new version by @marcucio, with improvements for batch transaction processing, testing seems OK
In the Project "Build Phases" tab, select the first "Link Binary with Libraries" dropdown menu and add the library libsqlite3.dylib or libsqlite3.0.dylib.
NOTE: In the "Build Phases" there can be multiple "Link Binary with Libraries" dropdown menus. Please select the first one otherwise it will not work.
Drag .h and .m files into your project's Plugins folder (in xcode) -- I always just have "Create references" as the option selected.
Take the precompiled javascript file from build/, or compile the coffeescript file in src/ to javascript WITH the top-level function wrapper option (default).
Use the resulting javascript file in your HTML.
Look for the following to your project's Cordova.plist or PhoneGap.plist:
<key>Plugins</key>
<dict>
...
</dict>
Insert this in there:
<key>SQLitePlugin</key>
<string>SQLitePlugin</string>
NOTE: This is from an old sample, old API which is hereby deprecated and going away.
var db = sqlitePlugin.openDatabase("my_sqlite_database.sqlite3");
db.executeSql('DROP TABLE IF EXISTS test_table');
db.executeSql('CREATE TABLE IF NOT EXISTS test_table (id integer primary key, data text, data_num integer)');
db.transaction(function(tx) {
return tx.executeSql("INSERT INTO test_table (data, data_num) VALUES (?,?)", ["test", 100], function(res) {
console.log("insertId: " + res.insertId + " -- probably 1");
console.log("rowsAffected: " + res.rowsAffected + " -- should be 1");
return db.executeSql("select count(id) as cnt from test_table;", [], function(res) {
console.log("rows.length: " + res.rows.length + " -- should be 1");
return console.log("rows[0].cnt: " + res.rows[0].cnt + " -- should be 1");
});
}, function(e) {
return console.log("ERROR: " + e.message);
});
});
Please look at the Lawnchair-adapter tree that contains a common adapter, working for both Android and iOS, along with a test-www directory.
Include the following js files in your html:
- lawnchair.js (you provide)
- SQLitePlugin.js
- Lawnchair-sqlitePlugin.js (must come after SQLitePlugin.js)
The name option will determine the sqlite filename. Optionally, you can change it using the db option.
In this example, you would be using/creating the database at: Documents/kvstore.sqlite3 (all db's in SQLitePlugin are in the Documents folder)
kvstore = new Lawnchair { name: "kvstore", adapter: SQLitePlugin.lawnchair_adapter }, () ->
# do stuff
Using the db option you can create multiple stores in one sqlite file. (There will be one table per store.)
recipes = new Lawnchair {db: "cookbook", name: "recipes", ...}
ingredients = new Lawnchair {db: "cookbook", name: "ingredients", ...}
I played with the idea of batching responses into larger sets of writeJavascript on a timer, however there was only a barely noticeable performance gain. So I took it out, not worth it. However there is a massive performance gain by batching on the client-side to minimize PhoneGap.exec calls using the transaction support.