Alex,
Thankyou for the comments. I use non-blocking fd's also but implement
multiple threads to take advantage of multiple processor servers. Since
threads carry quite a bit of baggage your single thread approach would
probably be superior on a single processor machine.
It has been
Hello,
I was reading the document 'http://www.sqlite.org/cvstrac/wiki?p=FtsUsage'
and I was wondering whether there is a way to count the number of
times a word is present in text indexed with FTS 3.
For example:
CREATE VIRTUAL TABLE recipe USING fts3(name, instructions);
INSERT INTO
On Tue, Jun 10, 2008 at 1:29 PM, A. H. Ongun <[EMAIL PROTECTED]> wrote:
> We have an application requirement for the following:
> 1) Maintain an in memory database of real time data. The main table mimics
> a Modbus register address scheme and once the table is created and records
> are
John,
My server uses epoll( ) and runs non-blocking in a single thread. I did
some google and found out that people who need a very fast server that is
highly scalable are using this model. non-blocking seems to be more
complicated at first glance but it actually makes the server design much
Try this link.
http://www.sqlite.org/cvstrac/wiki?p=LoadableExtensions
On Tue, Jun 10, 2008 at 12:39 AM, Stephen Woodbridge <
[EMAIL PROTECTED]> wrote:
> Hi all,
>
> I was reading through the sqlite source and noticed that there appears
> to be an ability to build and extension that is
We use an application server I wrote which handles HTTP, serves file and
has embedded Sqlite for the RPCs. The RPC can deliver its result either
in XML for widely distributed applications or as JSON if it is
responding to a WWW browser in AJAX mode.
We keep a local library of SQL RPCs so that
On Jun 10, 2008, at 7:55 PM, Igor Tandetnik wrote:
> D. Richard Hipp <[EMAIL PROTECTED]> wrote:
>> On Jun 10, 2008, at 4:04 PM, Robert Lehr wrote:
>>> Specifically, does SQLite lock the DBs incrementally, as they are
>>> accessed within the transaction? Or does it lock ALL DBs?
>>
>> Databases
D. Richard Hipp <[EMAIL PROTECTED]> wrote:
> On Jun 10, 2008, at 4:04 PM, Robert Lehr wrote:
>> Specifically, does SQLite lock the DBs incrementally, as they are
>> accessed within the transaction? Or does it lock ALL DBs?
>
> Databases are locked as needed - incrementally.
So this is another
Dave Dyer <[EMAIL PROTECTED]> wrote:
> I don't understand why the following transaction
> behavior is correct or necessary. The question
> involves two simultaneous transactions on the same
> database
>
> Process 1 Process 2
>
> BEGIN
>
> BEGIN
>
> insert...
>
> insert... fails "locked"
>
> end
I just noticed that you are returning from your function before finalize.
On Tue, Jun 10, 2008 at 10:12 AM, piotro <[EMAIL PROTECTED]> wrote:
> Hello. I really need help with this, because Im almost out of
> ideas here. Help please!
>
> sqldata is a vector< vector < char* > >
> row is a vector <
For starters sqlite3_column_count( ) should be after prepare once.
You don't need to do it for every step.
The other thing is do you have to use STL when you can do everything by
using SQLite?
Tell us in English what you want to accomplish with your code. We can come
up with a pure SQLite
On Jun 10, 2008, at 5:24 PM, maximi wrote:
>
> Hi
> im using php in a webapp to access a sqlite database. now since
> hours i'm
> confronted with a weird error:
>
> i can access my database just fine, as long as i use commands as
> simple as
> "select * from testtable where a='b'"
> as soon
On Jun 10, 2008, at 4:04 PM, Robert Lehr wrote:
> I am reposting this question b/c it received no reply previously and
> the
> answers to my questions will significantly affect our application's
> design.
>
> My current question focuses on SQLite's locking policy for
> transactions
> on
Wednesday, June 11, 2008, 12:12:33 AM, you wrote:
p> Hello. I really need help with this, because Im almost out of
p> ideas here. Help please!
p> sqldata is a vector< vector < char* > >
p> row is a vector < char* >
p> sqldata sql3wrapper::pobierzPodmiot(){
p> const char* tail;
p>
Dennis,
My servers main connection itself is in :memory:, but your suggestion
will still work.
However there are two things I don't like about this method. One is that I
need to parse the prepared statments and prefix queries, and replace the
table name with the temp table name in the
I don't understand why the following transaction
behavior is correct or necessary. The question
involves two simultaneous transactions on the same
database
Process 1 Process 2
BEGIN
BEGIN
insert...
insert...
Yes the BEGIN Transaction may get a BUSY/LOCKED error.
If the BEGIN fails then do not commit, If you do commit you'll get an error
indicating that the commit failed due to no active transaction
Gregor Brandt <[EMAIL PROTECTED]> wrote: When doing transactional commits I do
int error =
Hi
im using php in a webapp to access a sqlite database. now since hours i'm
confronted with a weird error:
i can access my database just fine, as long as i use commands as simple as
"select * from testtable where a='b'"
as soon as there comes any 'distinct' or 'order by' or 'group by' into
Robert Lehr wrote:
> I am reposting this question b/c it received no reply previously and the
> answers to my questions will significantly affect our application's
> design.
>
> My current question focuses on SQLite's locking policy for transactions
> on connections which have multiple DBs are
looks like it works again, sorry for the inconvenience :)
toms a écrit :
> (juste a test sorry)
>
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Alex Katebi wrote:
> Yes I need to do it as 8 byte buffer. Convert the endianess to the network
> then back to host for 8 byte integer.
> I think XML is great for command validation and CLI auto typing, help etc.
> Besides parsing issue, XML can not handle binary data directly.
>
As John
Gregor Brandt <[EMAIL PROTECTED]>
wrote:
> When doing transactional commits I do
>
> int error = sqlite3_Exec( .., "BEGIN TRANSACTION;", ... ) // can
> this ever return an error?
No, as far as I know. It just sets a flag in an internal data structure
associated with database connection.
> int
Hi,
Alex Katebi wrote:
> I am trying to implement remote procedure calls (RPC) for SQLite API to be
> used in my application.
> In particular sqlite3_column_double( ) returns a floating point double.
> How can I write this double value into a TCP socket?
> I have tried writing 8 bytes as integer
When doing transactional commits I do
int error = sqlite3_Exec( .., "BEGIN TRANSACTION;", ... )
// can
this ever return an error?
int error = sqlite3_exect( ..., "some update command", ... )
if I get an error code, must I never do the "COMMIT;". what if I do?
Thanks
I am forwarding this to the list in the hope that someone else will have
a good idea since the OP, toms, is having trouble posting himself.
Dennis Cote
toms wrote:
> ok here is the code I use for the statements:
>
> here is the SQL:
>
> "UPDATE Statistics_Players"
> " SET "
> "
Alex, the whole point of using XML is to avoid using binary data in an
RPC situation and to tag the data and thus make extensions less
traumatic. The radix change overhead is insignificant compared to the
network cost and the bonus is complete freedom from endian dilemmas.
The biggest
D. Hipp,
I have since identified and fixed my problem, thanks to our user group!
A lot of the networking gear like IP routers use big-endian machines
since this is the format used by the network protocol control messages.
PowerPC is an example.
Thanks,
-Alex
On Mon, Jun 9, 2008 at
Arjen,
Thanks!
On Tue, Jun 10, 2008 at 1:39 PM, Arjen Markus <[EMAIL PROTECTED]>
wrote:
> > I am going to guess yes.
> >
> > On Mon, Jun 9, 2008 at 9:58 PM, Russell Leighton
> > <[EMAIL PROTECTED]>
> > wrote:
> >
>
> >>
> >> Aren' t there aligment and endian issues as well as potential floating
Yes I need to do it as 8 byte buffer. Convert the endianess to the network
then back to host for 8 byte integer.
I think XML is great for command validation and CLI auto typing, help etc.
Besides parsing issue, XML can not handle binary data directly.
On Tue, Jun 10, 2008 at 12:31 PM, John
> I am going to guess yes.
>
> On Mon, Jun 9, 2008 at 9:58 PM, Russell Leighton
> <[EMAIL PROTECTED]>
> wrote:
>
>>
>> Aren' t there aligment and endian issues as well as potential floating
>> point representations between platforms?
>>
As most computers nowadays use the IEEE standard to
I am going to guess yes.
On Mon, Jun 9, 2008 at 9:58 PM, Russell Leighton <[EMAIL PROTECTED]>
wrote:
>
> On Jun 9, 2008, at 8:52 PM, Igor Tandetnik wrote:
>
> > "Alex Katebi" <[EMAIL PROTECTED]>
> > wrote in message
> > news:[EMAIL PROTECTED]<[EMAIL PROTECTED]>
> >> I am trying to implement
We have an application requirement for the following:
1) Maintain an in memory database of real time data. The main table mimics a
Modbus register address scheme and once the table is created and records are
inserted to create the table at startup, all writes are updates for the state
Alex Katebi wrote:
> Peter,
>I am using my own implementation. I found RPC and others too complicated
> to use and it did not give me enough control on the transport layer. I need
> my socket to be non-blocking and I am using epoll( ) which is very
> efficient.
>
XDR is a separate
Igor,
You are right. The answer is to use 8 byte buffer and don't forget to
account for the endianess.
I had a bug in my code.
On Mon, Jun 9, 2008 at 8:52 PM, Igor Tandetnik <[EMAIL PROTECTED]> wrote:
> "Alex Katebi" <[EMAIL PROTECTED]>
> wrote in message
> news:[EMAIL PROTECTED]<[EMAIL
Peter,
I am using my own implementation. I found RPC and others too complicated
to use and it did not give me enough control on the transport layer. I need
my socket to be non-blocking and I am using epoll( ) which is very
efficient.
Thanks!
-Alex
On Mon, Jun 9, 2008 at 10:53 PM, Peter A.
What you are looking for is the HTML 5 spec from the WHATWG. This
contains a section on using SQL, but it is not yet implemented in
Firefox (I think Opera is the only browser that supports it, and only
when 9.5 comes out).
Cheers,
Shawn Wilsher
Mozilla Developer
On Tue, Jun 10, 2008 at 10:32
Hi Igor,
Can you please help me to understand the point - "Only script running in chrome
(basically, in FireFox extensions) can
access XPCOM components". Excuse for my ignorance.
I was able to use SQLite in Internet Explorer using client side ADO. I am
looking for a similar solution for
On Jun 10, 2008, at 10:18 AM, Shailesh Birari wrote:
> Richard,
> Just to go one step ahead, If there are independent connections, do
> you
> mean that there can exist multiple transactions at the same time? I
> think not since the first transaction (write) will exclusively lock
> the
>
Hi Lauri,
Yes. I mean like in Google gears.
But, I don't want to use Google gears api to do it. I want to access SQLite
from plain javascript.
Thanks,
Ujval
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Lauri Ojansivu
Sent: Tuesday, June 10, 2008
Richard,
Just to go one step ahead, If there are independent connections, do you
mean that there can exist multiple transactions at the same time? I
think not since the first transaction (write) will exclusively lock the
database and the second transaction will get a busy error. Correct me if
I
Isn't this simply a vector problem?
You have a vector where you store char pointers. The pointers returned from
sqlite3_column_text will be destroyed when you step afaik.
Try making it a vector instead. Then you will implicitly make
copies of the text in your vector instead.
/Jonas
On Tue, Jun
2008/6/10 Ujval Mysore <[EMAIL PROTECTED]>:
> Hi,
>
> Has anyone tried accessing SQLite from Javascript in Firefox?
>
> I found an Sqlite helper library for Mozilla at
> http://codesnippets.joyent.com/posts/show/1030
Hi,
do you mean like in Google Gears?
http://gears.google.com
- Lauri
Hello. I really need help with this, because Im almost out of
ideas here. Help please!
sqldata is a vector< vector < char* > >
row is a vector < char* >
sqldata sql3wrapper::pobierzPodmiot(){
const char* tail;
sqlite3_stmt* statement;
std::string query = squery("SELECT * FROM
Igor Tandetnik wrote:
>
> "sqlite" <[EMAIL PROTECTED]> wrote
> in message news:[EMAIL PROTECTED]
>> We are using SQLite for our application development which would be
>> deployed in a pocket pc.Here we are using a inner join query which
>> takes different time during different executions
>
>
Our PRAGMA cache_size = 4000.
Is there any recommended way to calculate the cache size needed?
On Tue, Jun 10, 2008 at 5:29 PM, Igor Tandetnik <[EMAIL PROTECTED]> wrote:
> "Sabyasachi Ruj" <[EMAIL PROTECTED]>
> wrote in message
> news:[EMAIL PROTECTED]<[EMAIL PROTECTED]>
> > Now, I have two
Hi Shane,
Thank you for your response. I do need the rtree extension but I also
have a need to some others and would like to know how to statically link
in extensions anyway.
-Steve
Shane Harrelson wrote:
> If you just need the rtree extension, I believe it will be included by
> default in
"sqlite" <[EMAIL PROTECTED]> wrote
in message news:[EMAIL PROTECTED]
> We are using SQLite for our application development which would be
> deployed in a pocket pc.Here we are using a inner join query which
> takes different time during different executions
What exactly does this mean? Are you
"Ujval Mysore" <[EMAIL PROTECTED]>
wrote in message
news:[EMAIL PROTECTED]
> Has anyone tried accessing SQLite from Javascript in Firefox?
>
> I found an Sqlite helper library for Mozilla at
> http://codesnippets.joyent.com/posts/show/1030 .
>
> But when I try to execute the same, firefox throws
We are using two different connections to sqlite for these two different
threads.
So, we are not sharing the connection in SELECT and the DELETE thread.
On Tue, Jun 10, 2008 at 5:28 PM, D. Richard Hipp <[EMAIL PROTECTED]> wrote:
>
> On Jun 10, 2008, at 7:36 AM, Sabyasachi Ruj wrote:
>
> > Hi,
>
"Sabyasachi Ruj" <[EMAIL PROTECTED]>
wrote in message
news:[EMAIL PROTECTED]
> Now, I have two threads:-
> Thread1: Is deleting 7,00, 000 rows from the table.
> Thread2: Is doing SELECT on the same table.
>
> Now the problem is sometimes the sqlite3_prepare for the SELECT query
> is failing with
On Jun 10, 2008, at 7:50 AM, Alex Katebi wrote:
> There can only be one prepare per table at a time. The first prepare
> has to
> be finalized before another one. Table is locked by the first
> prepare until
> finalized.
>
Actually, there is no limit on the number of prepared statements on
There can only be one prepare per table at a time. The first prepare has to
be finalized before another one. Table is locked by the first prepare until
finalized.
On Tue, Jun 10, 2008 at 7:36 AM, Sabyasachi Ruj <[EMAIL PROTECTED]> wrote:
> Hi,
>
> I have a very big table with around 40,00, 000
Hi,
I have a very big table with around 40,00, 000 rows. 4 columns. 220 MB.
Now, I have two threads:-
Thread1: Is deleting 7,00, 000 rows from the table.
Thread2: Is doing SELECT on the same table.
Now the problem is sometimes the sqlite3_prepare for the SELECT query is
failing with SQLITE_BUSY
Hi,
Has anyone tried accessing SQLite from Javascript in Firefox?
I found an Sqlite helper library for Mozilla at
http://codesnippets.joyent.com/posts/show/1030 .
But when I try to execute the same, firefox throws the following exception
uncaught exception: Permission denied to get property
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