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Indexed db adapter - allow multiple records #175

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Indexed db adapter - allow multiple records #175

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136aa9a
Fixed an issue on webkit-sqlite key. See http://stackoverflow.com/que…
paolooo Jul 30, 2013
64754ed
forgot to add convertInt2String method.
paolooo Jul 30, 2013
d5575cd
A fix for indexed-db adapter. This will allow multiple records or obj…
paolooo Aug 1, 2013
103b9bc
A fix for indexed-db adapter. This will allow multiple records or obj…
paolooo Aug 1, 2013
7480e45
records
paolooo Aug 1, 2013
dbab619
remove console.log
paolooo Aug 1, 2013
6dac596
indexed-db multiple records
paolooo Aug 1, 2013
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12 changes: 11 additions & 1 deletion src/adapters/indexed-db.js
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Original file line number Diff line number Diff line change
Expand Up @@ -73,7 +73,17 @@ Lawnchair.adapter('indexed-db', (function(){
// ok, create object store.
var params = {};
if (self.useAutoIncrement) { params.autoIncrement = true; }
self.db.createObjectStore(self.record, params);

if ( options.records ) {
// create multiple records or objectStores
// option object = {..., records:['objectStore1', 'objectStore2']}
for ( i=options.records.length; i--; ) {
self.db.createObjectStore(options.records[i], params);
}
} else {
// single record
self.db.createObjectStore(self.record, params);
}
self.store = true;
};
request.onupgradeneeded = function(event) {
Expand Down
211 changes: 115 additions & 96 deletions src/adapters/webkit-sqlite.js
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Original file line number Diff line number Diff line change
Expand Up @@ -2,6 +2,12 @@ Lawnchair.adapter('webkit-sqlite', (function () {
// private methods
var fail = function (e, i) { console.error('error in sqlite adaptor!', e, i) }
, now = function () { return new Date() } // FIXME need to use better date fn
, convertInt2String = function(args) {
// converts array's integer value to string
return args.map(function(value, index, arr){
return '' + value
});
}
// not entirely sure if this is needed...
if (!Function.prototype.bind) {
Function.prototype.bind = function( obj ) {
Expand Down Expand Up @@ -63,7 +69,6 @@ Lawnchair.adapter('webkit-sqlite', (function () {
save: function (obj, callback, error) {
var that = this
, objs = (this.isArray(obj) ? obj : [obj]).map(function(o){if(!o.key) { o.key = that.uuid()} return o})
, ins = "INSERT OR REPLACE INTO " + this.record + " (value, timestamp, id) VALUES (?,?,?)"
, win = function () { if (callback) { that.lambda(callback).call(that, that.isArray(obj)?objs:objs[0]) }}
, error= error || function() {}
, insvals = []
Expand All @@ -78,10 +83,16 @@ Lawnchair.adapter('webkit-sqlite', (function () {
throw e;
}

that.db.transaction(function(t) {
for (var i = 0, l = objs.length; i < l; i++)
t.executeSql(ins, insvals[i])
}, function(e,i){fail(e,i)}, win)
that.db.transaction(function(t) {
for (var i = 0, l = objs.length; i < l; i++) {
// Fixed the issue on id field.
// Numeric id will now save as Integer. Otherwise, it will be saved as String.
ins = "INSERT OR REPLACE INTO " + that.record + " (value, timestamp, id) VALUES (?,?,";
ins += /\D/.test(insvals[i][2]) ? "'" + insvals[i][2] + "'" : insvals[i][2];
ins += ")";
t.executeSql(ins, [insvals[i][0], insvals[i][1]])
}
}, function(e,i){fail(e,i)}, win)

return this
},
Expand All @@ -92,96 +103,104 @@ Lawnchair.adapter('webkit-sqlite', (function () {
},

get: function (keyOrArray, cb) {
var that = this
, sql = ''
, args = this.isArray(keyOrArray) ? keyOrArray : [keyOrArray];
// batch selects support
sql = 'SELECT id, value FROM ' + this.record + " WHERE id IN (" +
args.map(function(){return '?'}).join(",") + ")"
// FIXME
// will always loop the results but cleans it up if not a batch return at the end..
// in other words, this could be faster
var win = function (xxx, results) {
var o
, r
, lookup = {}
// map from results to keys
for (var i = 0, l = results.rows.length; i < l; i++) {
o = JSON.parse(results.rows.item(i).value)
o.key = results.rows.item(i).id
lookup[o.key] = o;
}
r = args.map(function(key) { return lookup[key]; });
if (!that.isArray(keyOrArray)) r = r.length ? r[0] : null
if (cb) that.lambda(cb).call(that, r)
var that = this
, sql = ''
, args = this.isArray(keyOrArray) ? keyOrArray : [keyOrArray];
// batch selects support
sql = 'SELECT id, value FROM ' + this.record + " WHERE id IN (" +
args.map(function(){return '?'}).join(",") + ")"

// converts integer value to string
args = convertInt2String(args);

// FIXME
// will always loop the results but cleans it up if not a batch return at the end..
// in other words, this could be faster
var win = function (xxx, results) {
var o
, r
, lookup = {}
// map from results to keys
for (var i = 0, l = results.rows.length; i < l; i++) {
o = JSON.parse(results.rows.item(i).value)
o.key = results.rows.item(i).id
lookup[o.key] = o;
}
this.db.readTransaction(function(t){ t.executeSql(sql, args, win, fail) })
return this
},

exists: function (key, cb) {
var is = "SELECT * FROM " + this.record + " WHERE id = ?"
, that = this
, win = function(xxx, results) { if (cb) that.fn('exists', cb).call(that, (results.rows.length > 0)) }
this.db.readTransaction(function(t){ t.executeSql(is, [key], win, fail) })
return this
},

all: function (callback) {
var that = this
, all = "SELECT * FROM " + this.record
, r = []
, cb = this.fn(this.name, callback) || undefined
, win = function (xxx, results) {
if (results.rows.length != 0) {
for (var i = 0, l = results.rows.length; i < l; i++) {
var obj = JSON.parse(results.rows.item(i).value)
obj.key = results.rows.item(i).id
r.push(obj)
}
}
if (cb) cb.call(that, r)
}

this.db.readTransaction(function (t) {
t.executeSql(all, [], win, fail)
})
return this
},

remove: function (keyOrArray, cb) {
var that = this
, args
, sql = "DELETE FROM " + this.record + " WHERE id "
, win = function () { if (cb) that.lambda(cb).call(that) }
if (!this.isArray(keyOrArray)) {
sql += '= ?';
args = [keyOrArray];
} else {
args = keyOrArray;
sql += "IN (" +
args.map(function(){return '?'}).join(',') +
")";
}
args = args.map(function(obj) {
return obj.key ? obj.key : obj;
});

this.db.transaction( function (t) {
t.executeSql(sql, args, win, fail);
});

return this;
},

nuke: function (cb) {
var nuke = "DELETE FROM " + this.record
, that = this
, win = cb ? function() { that.lambda(cb).call(that) } : function(){}
this.db.transaction(function (t) {
t.executeSql(nuke, [], win, fail)
})
return this
}
r = args.map(function(key) { return lookup[key]; });
if (!that.isArray(keyOrArray)) r = r.length ? r[0] : null
if (cb) that.lambda(cb).call(that, r)
}

this.db.readTransaction(function(t){ t.executeSql(sql, args, win, fail) })
return this
},

exists: function (key, cb) {
var is = "SELECT * FROM " + this.record + " WHERE id = ?"
, that = this
, win = function(xxx, results) { if (cb) that.fn('exists', cb).call(that, (results.rows.length > 0)) }
this.db.readTransaction(function(t){ t.executeSql(is, [''+key], win, fail) })
return this
},

all: function (callback) {
var that = this
, all = "SELECT * FROM " + this.record
, r = []
, cb = this.fn(this.name, callback) || undefined
, win = function (xxx, results) {
if (results.rows.length != 0) {
for (var i = 0, l = results.rows.length; i < l; i++) {
var obj = JSON.parse(results.rows.item(i).value)
obj.key = results.rows.item(i).id
r.push(obj)
}
}
if (cb) cb.call(that, r)
}

this.db.readTransaction(function (t) {
t.executeSql(all, [], win, fail)
})
return this
},

remove: function (keyOrArray, cb) {
var that = this
, args = this.isArray(keyOrArray) ? keyOrArray : [keyOrArray]
, sql = "DELETE FROM " + this.record + " WHERE id "
, win = function () { if (cb) that.lambda(cb).call(that) }

if (!this.isArray(keyOrArray)) {
sql += '= ?';
} else {
sql += "IN (" +
args.map(function(){return '?'}).join(',') +
")";
}

args = args.map(function(obj) {
return obj.key ? obj.key : obj;
});

// converts integer value to string
args = convertInt2String(args);

this.db.transaction( function (t) {
t.executeSql(sql, args, win, fail);
});

return this;
},

nuke: function (cb) {
var nuke = "DELETE FROM " + this.record
, that = this
, win = cb ? function() { that.lambda(cb).call(that) } : function(){}
this.db.transaction(function (t) {
t.executeSql(nuke, [], win, fail)
})
return this
}
//////
}})());
}})())