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preetwinder
jio
Commits
68c4db2b
Commit
68c4db2b
authored
Aug 11, 2014
by
Xiaowu Zhang
Browse files
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Plain Diff
add _start&_end option arguments for getAttachment
parent
80583aef
Changes
1
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Showing
1 changed file
with
154 additions
and
49 deletions
+154
-49
src/jio.storage/indexeddbstorage.js
src/jio.storage/indexeddbstorage.js
+154
-49
No files found.
src/jio.storage/indexeddbstorage.js
View file @
68c4db2b
...
@@ -13,7 +13,8 @@
...
@@ -13,7 +13,8 @@
*
*
* {
* {
* "type": "indexeddb",
* "type": "indexeddb",
* "database": <string>
* "database": <string>,
* "unite": <integer> //byte
* }
* }
*
*
* The database name will be prefixed by "jio:", so if the database property is
* The database name will be prefixed by "jio:", so if the database property is
...
@@ -28,7 +29,7 @@
...
@@ -28,7 +29,7 @@
*/
*/
/*jslint indent: 2, maxlen: 80, nomen: true */
/*jslint indent: 2, maxlen: 80, nomen: true */
/*global define, module, require, indexedDB, jIO, RSVP, Blob*/
/*global define, module, require, indexedDB, jIO, RSVP, Blob
, Math
*/
(
function
(
dependencies
,
factory
)
{
(
function
(
dependencies
,
factory
)
{
"
use strict
"
;
"
use strict
"
;
...
@@ -76,7 +77,16 @@
...
@@ -76,7 +77,16 @@
throw
new
TypeError
(
"
IndexedDBStorage 'database' description property
"
+
throw
new
TypeError
(
"
IndexedDBStorage 'database' description property
"
+
"
must be a non-empty string
"
);
"
must be a non-empty string
"
);
}
}
if
(
description
.
unite
!==
undefined
)
{
if
(
description
.
unite
!==
parseInt
(
description
.
unite
,
10
))
{
throw
new
TypeError
(
"
IndexedDBStorage 'unite' description property
"
+
"
must be a integer
"
);
}
}
else
{
description
.
unite
=
2000000
;
}
this
.
_database_name
=
"
jio:
"
+
description
.
database
;
this
.
_database_name
=
"
jio:
"
+
description
.
database
;
this
.
_unite
=
description
.
unite
;
}
}
...
@@ -109,10 +119,11 @@
...
@@ -109,10 +119,11 @@
store
.
createIndex
(
"
_id
"
,
"
_id
"
);
store
.
createIndex
(
"
_id
"
,
"
_id
"
);
store
=
db
.
createObjectStore
(
"
blob
"
,
{
store
=
db
.
createObjectStore
(
"
blob
"
,
{
"
keyPath
"
:
[
"
_id
"
,
"
_attachment
"
]
"
keyPath
"
:
[
"
_id
"
,
"
_attachment
"
,
"
_part
"
]
//"autoIncrement": true
//"autoIncrement": true
});
});
store
.
createIndex
(
"
_id_attachment
"
,
[
"
_id
"
,
"
_attachment
"
]);
store
.
createIndex
(
"
_id_attachment_part
"
,
[
"
_id
"
,
"
_attachment
"
,
"
_part
"
]);
};
};
request
.
onsuccess
=
function
()
{
request
.
onsuccess
=
function
()
{
resolve
(
request
.
result
);
resolve
(
request
.
result
);
...
@@ -134,6 +145,21 @@
...
@@ -134,6 +145,21 @@
*@param {Object} metadata The data to put in
*@param {Object} metadata The data to put in
*@return a new promise
*@return a new promise
*/
*/
function
putIndexedDBArrayBuffer
(
store
,
metadata
)
{
var
request
,
resolver
;
request
=
store
.
put
(
metadata
);
resolver
=
function
(
resolve
,
reject
)
{
request
.
onerror
=
function
(
e
)
{
reject
(
e
);
};
request
.
onsuccess
=
function
()
{
resolve
(
metadata
);
};
};
return
new
RSVP
.
Promise
(
resolver
);
}
function
putIndexedDB
(
store
,
metadata
,
readData
)
{
function
putIndexedDB
(
store
,
metadata
,
readData
)
{
var
request
,
var
request
,
resolver
;
resolver
;
...
@@ -149,8 +175,10 @@
...
@@ -149,8 +175,10 @@
};
};
return
new
RSVP
.
Promise
(
resolver
);
return
new
RSVP
.
Promise
(
resolver
);
}
catch
(
e
)
{
}
catch
(
e
)
{
return
putIndexedDB
(
store
,
{
"
_id
"
:
metadata
.
_id
,
return
putIndexedDBArrayBuffer
(
store
,
{
"
_id
"
:
metadata
.
_id
,
"
_attachment
"
:
metadata
.
_attachment
,
"
_attachment
"
:
metadata
.
_attachment
,
"
_part
"
:
metadata
.
_part
,
"
blob
"
:
readData
});
"
blob
"
:
readData
});
}
}
}
}
...
@@ -347,11 +375,21 @@
...
@@ -347,11 +375,21 @@
transaction
,
transaction
,
global_db
,
global_db
,
queue
=
new
RSVP
.
Queue
();
queue
=
new
RSVP
.
Queue
();
function
tmp
(
index
,
array
,
store
)
{
function
removeAllPart
(
store
,
attachment
,
part
,
totalLength
)
{
return
removeIndexedDB
(
store
,
[
param
.
_id
,
array
[
index
]])
if
(
part
*
jio_storage
.
_unite
>=
totalLength
)
{
return
;
}
return
removeIndexedDB
(
store
,
[
param
.
_id
,
attachment
,
part
])
.
then
(
function
()
{
return
removeAllPart
(
store
,
attachment
,
part
+
1
,
totalLength
);
});
}
function
removeAll
(
store
,
array
,
index
,
allAttachment
)
{
var
totalLength
=
allAttachment
[
array
[
index
]].
length
;
return
removeAllPart
(
store
,
array
[
index
],
0
,
totalLength
)
.
then
(
function
()
{
.
then
(
function
()
{
if
(
index
<
array
.
length
-
1
)
{
if
(
index
<
array
.
length
-
1
)
{
return
tmp
(
index
+
1
,
array
,
store
);
return
removeAll
(
store
,
array
,
index
+
1
,
allAttachment
);
}
}
});
});
}
}
...
@@ -381,7 +419,7 @@
...
@@ -381,7 +419,7 @@
var
array
,
store
;
var
array
,
store
;
array
=
Object
.
keys
(
result
.
_attachment
);
array
=
Object
.
keys
(
result
.
_attachment
);
store
=
transaction
.
objectStore
(
"
blob
"
);
store
=
transaction
.
objectStore
(
"
blob
"
);
return
tmp
(
0
,
array
,
store
);
return
removeAll
(
store
,
array
,
0
,
result
.
_attachment
);
}
}
})
})
.
push
(
function
()
{
.
push
(
function
()
{
...
@@ -607,6 +645,24 @@
...
@@ -607,6 +645,24 @@
global_db
,
global_db
,
BlobInfo
,
BlobInfo
,
readResult
;
readResult
;
function
putAllPart
(
store
,
metadata
,
readResult
,
count
,
part
)
{
var
blob
,
readPart
,
end
;
if
(
count
>=
metadata
.
_blob
.
size
)
{
return
;
}
end
=
count
+
jio_storage
.
_unite
;
blob
=
metadata
.
_blob
.
slice
(
count
,
end
);
readPart
=
readResult
.
slice
(
count
,
end
);
return
putIndexedDB
(
store
,
{
"
_id
"
:
metadata
.
_id
,
"
_attachment
"
:
metadata
.
_attachment
,
"
_part
"
:
part
,
"
blob
"
:
blob
},
readPart
)
.
then
(
function
()
{
return
putAllPart
(
store
,
metadata
,
readResult
,
end
,
part
+
1
);
});
}
return
jIO
.
util
.
readBlobAsArrayBuffer
(
metadata
.
_blob
)
return
jIO
.
util
.
readBlobAsArrayBuffer
(
metadata
.
_blob
)
.
then
(
function
(
event
)
{
.
then
(
function
(
event
)
{
readResult
=
event
.
target
.
result
;
readResult
=
event
.
target
.
result
;
...
@@ -640,9 +696,7 @@
...
@@ -640,9 +696,7 @@
.
push
(
function
()
{
.
push
(
function
()
{
//put in blob
//put in blob
var
store
=
transaction
.
objectStore
(
"
blob
"
);
var
store
=
transaction
.
objectStore
(
"
blob
"
);
return
putIndexedDB
(
store
,
{
"
_id
"
:
metadata
.
_id
,
return
putAllPart
(
store
,
metadata
,
readResult
,
0
,
0
);
"
_attachment
"
:
metadata
.
_attachment
,
"
blob
"
:
metadata
.
_blob
},
readResult
);
})
})
.
push
(
function
()
{
.
push
(
function
()
{
return
transactionEnd
(
transaction
);
return
transactionEnd
(
transaction
);
...
@@ -672,32 +726,75 @@
...
@@ -672,32 +726,75 @@
var
jio_storage
=
this
,
var
jio_storage
=
this
,
transaction
,
transaction
,
global_db
,
global_db
,
_id_attachment
=
[
param
.
_id
,
param
.
_attachment
];
blob
,
totalLength
;
function
getDesirePart
(
store
,
start
,
end
)
{
if
(
start
>
end
)
{
return
;
}
return
getIndexedDB
(
store
,
[
param
.
_id
,
param
.
_attachment
,
start
])
.
then
(
function
(
result
)
{
var
blobPart
=
result
.
blob
;
if
(
result
.
blob
.
byteLength
!==
undefined
)
{
blobPart
=
new
Blob
([
result
.
blob
]);
}
if
(
blob
)
{
blob
=
new
Blob
([
blob
,
blobPart
]);
}
else
{
blob
=
blobPart
;
}
return
getDesirePart
(
store
,
start
+
1
,
end
);
});
}
return
new
RSVP
.
Queue
()
return
new
RSVP
.
Queue
()
.
push
(
function
()
{
.
push
(
function
()
{
return
openIndexedDB
(
jio_storage
.
_database_name
);
return
openIndexedDB
(
jio_storage
.
_database_name
);
})
})
.
push
(
function
(
db
)
{
.
push
(
function
(
db
)
{
global_db
=
db
;
global_db
=
db
;
transaction
=
db
.
transaction
([
"
blob
"
],
"
readwrite
"
);
transaction
=
db
.
transaction
([
"
attachment
"
,
"
blob
"
],
"
readwrite
"
);
//check if the attachment exists
//check if the attachment exists
return
promiseResearch
(
transaction
,
_id_attachment
,
return
promiseResearch
(
transaction
,
"
blob
"
,
"
_id_attachment
"
);
param
.
_id
,
"
attachment
"
,
"
_id
"
);
})
})
.
push
(
function
(
researchResult
)
{
.
push
(
function
(
researchResult
)
{
if
(
researchResult
.
result
===
undefined
)
{
var
result
=
researchResult
.
result
,
start
,
end
;
if
(
result
===
undefined
||
result
.
_attachment
[
param
.
_attachment
]
===
undefined
)
{
throw
({
"
status
"
:
404
,
"
reason
"
:
"
missing attachment
"
,
throw
({
"
status
"
:
404
,
"
reason
"
:
"
missing attachment
"
,
"
message
"
:
"
IndexeddbStorage, unable to get attachment.
"
});
"
message
"
:
"
IndexeddbStorage, unable to get attachment.
"
});
}
}
return
getIndexedDB
(
researchResult
.
store
,
_id_attachment
);
totalLength
=
result
.
_attachment
[
param
.
_attachment
].
length
;
})
param
.
_start
=
param
.
_start
===
undefined
?
0
:
param
.
_start
;
.
push
(
function
(
result
)
{
param
.
_end
=
param
.
_end
===
undefined
?
totalLength
//get data
:
param
.
_end
;
if
(
result
.
blob
.
byteLength
!==
undefined
)
{
if
(
param
.
_end
>
totalLength
)
{
result
.
blob
=
new
Blob
([
result
.
blob
],
param
.
_end
=
totalLength
;
{
type
:
"
text/plain
"
});
}
if
(
param
.
_start
<
0
||
param
.
_end
<
0
)
{
throw
({
"
status
"
:
404
,
"
reason
"
:
"
invalide _start, _end
"
,
"
message
"
:
"
_start and _end must be positive
"
});
}
}
return
({
"
data
"
:
result
.
blob
});
if
(
param
.
_start
>
param
.
_end
)
{
throw
({
"
status
"
:
404
,
"
reason
"
:
"
invalide offset
"
,
"
message
"
:
"
start is great then end
"
});
}
start
=
Math
.
floor
(
param
.
_start
/
jio_storage
.
_unite
);
end
=
Math
.
floor
(
param
.
_end
/
jio_storage
.
_unite
);
if
(
param
.
_end
%
jio_storage
.
_unite
===
0
)
{
end
-=
1
;
}
return
getDesirePart
(
transaction
.
objectStore
(
"
blob
"
),
start
,
end
);
})
.
push
(
function
()
{
var
start
=
param
.
_start
%
jio_storage
.
_unite
,
end
=
start
+
param
.
_end
-
param
.
_start
;
blob
=
blob
.
slice
(
start
,
end
);
return
({
"
data
"
:
new
Blob
([
blob
],
{
type
:
"
text/plain
"
})});
})
})
.
push
(
undefined
,
function
(
error
)
{
.
push
(
undefined
,
function
(
error
)
{
// Check if transaction is ongoing, if so, abort it
// Check if transaction is ongoing, if so, abort it
...
@@ -724,7 +821,16 @@
...
@@ -724,7 +821,16 @@
var
jio_storage
=
this
,
var
jio_storage
=
this
,
transaction
,
transaction
,
global_db
,
global_db
,
_id_attachment
=
[
param
.
_id
,
param
.
_attachment
];
totalLength
;
function
removePart
(
store
,
part
)
{
if
(
part
*
jio_storage
.
_unite
>=
totalLength
)
{
return
;
}
return
removeIndexedDB
(
store
,
[
param
.
_id
,
param
.
_attachment
,
part
])
.
then
(
function
()
{
return
removePart
(
store
,
part
+
1
);
});
}
return
new
RSVP
.
Queue
()
return
new
RSVP
.
Queue
()
.
push
(
function
()
{
.
push
(
function
()
{
return
openIndexedDB
(
jio_storage
.
_database_name
);
return
openIndexedDB
(
jio_storage
.
_database_name
);
...
@@ -733,26 +839,25 @@
...
@@ -733,26 +839,25 @@
global_db
=
db
;
global_db
=
db
;
transaction
=
db
.
transaction
([
"
attachment
"
,
"
blob
"
],
"
readwrite
"
);
transaction
=
db
.
transaction
([
"
attachment
"
,
"
blob
"
],
"
readwrite
"
);
//check if the attachment exists
//check if the attachment exists
return
promiseResearch
(
transaction
,
_id_attachment
,
return
promiseResearch
(
transaction
,
param
.
_id
,
"
blob
"
,
"
_id_attachment
"
);
"
attachment
"
,
"
_id
"
);
})
})
.
push
(
function
(
researchResult
)
{
.
push
(
function
(
researchResult
)
{
if
(
researchResult
.
result
===
undefined
)
{
var
result
=
researchResult
.
result
;
if
(
result
===
undefined
||
result
.
_attachment
[
param
.
_attachment
]
===
undefined
)
{
throw
({
"
status
"
:
404
,
"
reason
"
:
"
missing attachment
"
,
throw
({
"
status
"
:
404
,
"
reason
"
:
"
missing attachment
"
,
"
message
"
:
"
message
"
:
"
IndexeddbStorage, document attachment not found.
"
});
"
IndexeddbStorage, document attachment not found.
"
});
}
}
return
removeIndexedDB
(
researchResult
.
store
,
_id_attachment
);
totalLength
=
result
.
_attachment
[
param
.
_attachment
].
length
;
})
.
push
(
function
()
{
//updata attachment
//updata attachment
var
store
=
transaction
.
objectStore
(
"
attachment
"
);
return
getIndexedDB
(
store
,
param
.
_id
);
})
.
push
(
function
(
result
)
{
delete
result
.
_attachment
[
param
.
_attachment
];
delete
result
.
_attachment
[
param
.
_attachment
];
var
store
=
transaction
.
objectStore
(
"
attachment
"
);
return
putIndexedDB
(
researchResult
.
store
,
result
);
return
putIndexedDB
(
store
,
result
);
})
.
push
(
function
()
{
var
store
=
transaction
.
objectStore
(
"
blob
"
);
return
removePart
(
store
,
0
);
})
})
.
push
(
function
()
{
.
push
(
function
()
{
return
transactionEnd
(
transaction
);
return
transactionEnd
(
transaction
);
...
...
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