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lucas.parsy
jio
Commits
dd400574
Commit
dd400574
authored
Apr 02, 2014
by
Tristan Cavelier
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Improve indexeddb error management
parent
68cd478a
Changes
1
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1 changed file
with
121 additions
and
81 deletions
+121
-81
src/jio.storage/indexeddbstorage.js
src/jio.storage/indexeddbstorage.js
+121
-81
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src/jio.storage/indexeddbstorage.js
View file @
dd400574
...
...
@@ -81,27 +81,39 @@
// XXX doc string
IndexedDBStorage
.
prototype
.
createDBIfNecessary
=
function
()
{
var
status
,
request
=
indexedDB
.
open
(
this
.
_database_name
);
var
status
,
open_req
=
indexedDB
.
open
(
this
.
_database_name
);
// No request.abort() is provided so we cannot cancel database creation
return
new
Promise
(
function
(
resolve
,
reject
)
{
request
.
onupgradeneeded
=
function
()
{
open_req
.
onupgradeneeded
=
function
()
{
// *Called at t + 1*
var
store
,
db
=
open_req
.
result
;
// If we reach this point, the database is created.
// There is no way to cancel the operation from here.
// So let's continue.
var
db
=
request
.
result
,
try
{
store
=
db
.
createObjectStore
(
"
metadata
"
,
{
"
keyPath
"
:
"
_id
"
});
// `createObjectStore` can throw InvalidStateError - open_req.onerror
// and db.onerror won't be called.
store
.
createIndex
(
"
_id
"
,
"
_id
"
);
// `store.createIndex` can throw an error
status
=
"
created
"
;
// store.transaction.oncomplete = function () {
// // *Called at t + 2*
// };
}
catch
(
e
)
{
reject
(
e
);
db
.
close
();
}
};
request
.
onerror
=
function
()
{
var
db
=
request
.
result
;
if
(
db
)
{
db
.
close
();
}
reject
(
request
.
error
);
open_req
.
onerror
=
function
()
{
if
(
open_req
.
result
)
{
open_req
.
result
.
close
();
}
reject
(
open_req
.
error
);
};
request
.
onsuccess
=
function
()
{
request
.
result
.
close
();
open_req
.
onsuccess
=
function
()
{
// *Called at t + 3*
open_req
.
result
.
close
();
resolve
(
status
||
"
no_content
"
);
};
});
...
...
@@ -109,42 +121,59 @@
// XXX doc string
IndexedDBStorage
.
prototype
.
getMetadata
=
function
(
id
)
{
var
onCancel
,
request
=
indexedDB
.
open
(
this
.
_database_name
);
var
onCancel
,
open_req
=
indexedDB
.
open
(
this
.
_database_name
);
return
new
Promise
(
function
(
resolve
,
reject
)
{
request
.
onerror
=
function
()
{
var
db
=
request
.
result
;
reject
(
request
.
error
);
if
(
db
)
{
db
.
close
();
}
open_req
.
onerror
=
function
()
{
if
(
open_req
.
result
)
{
open_req
.
result
.
close
();
}
reject
(
open_req
.
error
);
};
request
.
onsuccess
=
function
()
{
open_req
.
onsuccess
=
function
()
{
// *Called at t + 1*
var
tx
,
store
,
get_req
,
err
,
res
,
db
=
open_req
.
result
;
try
{
var
db
,
tx
,
store
,
getrequest
;
db
=
request
.
result
;
db
.
onerror
=
function
()
{
db
.
close
();
};
tx
=
db
.
transaction
(
"
metadata
"
,
"
readonly
"
);
store
=
tx
.
objectStore
(
"
metadata
"
);
// `db.transaction` can throw an error
tx
.
onerror
=
function
()
{
reject
(
err
||
tx
.
error
);
db
.
close
();
};
tx
.
oncomplete
=
function
()
{
// *Called at t + 3*
if
(
err
)
{
reject
(
err
);
}
else
{
resolve
(
res
);
}
db
.
close
();
};
// we can cancel the transaction from here
onCancel
=
function
()
{
tx
.
abort
();
db
.
close
();
};
getrequest
=
store
.
get
(
id
);
getrequest
.
onabort
=
function
()
{
// if cancelled, the getrequest should fail
reject
(
getrequest
.
error
);
db
.
close
();
store
=
tx
.
objectStore
(
"
metadata
"
);
get_req
=
store
.
get
(
id
);
get_req
.
onabort
=
function
()
{
// if cancelled, the get_req should fail
// and I hope the tx.onerror is called
err
=
get_req
.
error
;
};
getrequest
.
onerror
=
getrequest
.
onabort
;
getrequest
.
onsuccess
=
function
()
{
// if cancelled, this function should not be called
if
(
!
getrequest
.
result
)
{
reject
(
"
not_found
"
);
get_req
.
onerror
=
get_req
.
onabort
;
get_req
.
onsuccess
=
function
()
{
// *Called at t + 2*
// if cancelled, this listener should not be called
if
(
!
get_req
.
result
)
{
err
=
"
not_found
"
;
return
;
}
resolve
(
getrequest
.
result
);
db
.
close
();
res
=
get_req
.
result
;
};
}
catch
(
e
)
{
reject
(
e
);
db
.
close
();
}
};
},
function
()
{
...
...
@@ -156,31 +185,39 @@
// XXX doc string
IndexedDBStorage
.
prototype
.
putMetadata
=
function
(
metadata
)
{
var
onCancel
,
request
=
indexedDB
.
open
(
this
.
_database_name
);
var
onCancel
,
open_req
=
indexedDB
.
open
(
this
.
_database_name
);
return
new
Promise
(
function
(
resolve
,
reject
)
{
request
.
onerror
=
function
()
{
var
db
=
request
.
result
;
reject
(
request
.
error
);
if
(
db
)
{
db
.
close
();
}
open_req
.
onerror
=
function
()
{
if
(
open_req
.
result
)
{
open_req
.
result
.
close
();
}
reject
(
open_req
.
error
);
};
request
.
onsuccess
=
function
()
{
open_req
.
onsuccess
=
function
()
{
// *Called at t + 1*
var
tx
,
store
,
db
=
open_req
.
result
;
try
{
var
db
,
tx
,
store
;
db
=
request
.
result
;
tx
=
db
.
transaction
(
"
metadata
"
,
"
readwrite
"
);
store
=
tx
.
objectStore
(
"
metadata
"
);
// we can cancel the transaction from here
onCancel
=
function
()
{
tx
.
abort
();
tx
.
onerror
=
function
()
{
reject
(
tx
.
error
);
db
.
close
();
};
store
.
put
(
metadata
);
tx
.
oncomplete
=
function
()
{
// *Called at t + 3*
resolve
();
db
.
close
();
};
// we can cancel the transaction from here
onCancel
=
function
()
{
tx
.
abort
();
db
.
close
();
};
store
=
tx
.
objectStore
(
"
metadata
"
);
store
.
put
(
metadata
);
// store.onsuccess = function () {
// // *Called at t + 2*
// };
}
catch
(
e
)
{
reject
(
e
);
db
.
close
();
}
};
},
function
()
{
...
...
@@ -229,11 +266,15 @@
};
IndexedDBStorage
.
prototype
.
getList
=
function
()
{
var
rows
=
[],
onCancel
,
request
=
indexedDB
.
open
(
this
.
_database_name
);
var
rows
=
[],
onCancel
,
open_req
=
indexedDB
.
open
(
this
.
_database_name
);
return
new
Promise
(
function
(
resolve
,
reject
)
{
request
.
onsuccess
=
function
()
{
var
db
,
tx
,
store
,
index
,
indexrequest
;
db
=
request
.
result
;
open_req
.
onerror
=
function
()
{
if
(
open_req
.
result
)
{
open_req
.
result
.
close
();
}
reject
(
open_req
.
error
);
};
open_req
.
onsuccess
=
function
()
{
var
tx
,
store
,
index
,
index_req
,
db
=
open_req
.
result
;
try
{
tx
=
db
.
transaction
(
"
metadata
"
,
"
readonly
"
);
onCancel
=
function
()
{
tx
.
abort
();
...
...
@@ -242,9 +283,9 @@
store
=
tx
.
objectStore
(
"
metadata
"
);
index
=
store
.
index
(
"
_id
"
);
indexrequest
=
index
.
openCursor
();
indexrequest
.
onsuccess
=
function
()
{
var
cursor
=
indexrequest
.
result
;
index_req
=
index
.
openCursor
();
index_req
.
onsuccess
=
function
()
{
var
cursor
=
index_req
.
result
;
if
(
cursor
)
{
// Called for each matching record.
rows
.
push
({
...
...
@@ -259,11 +300,10 @@
db
.
close
();
}
};
};
request
.
onerror
=
function
()
{
reject
(
request
.
error
);
var
db
=
request
.
result
;
if
(
db
)
{
db
.
close
();
}
}
catch
(
e
)
{
reject
(
e
);
db
.
close
();
}
};
},
function
()
{
if
(
typeof
onCancel
===
"
function
"
)
{
...
...
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