Re: [sqlite] [BUG] Silent change in intergeral overflow handling in 3.7.6
Igor Tandetnik itandetnik@... writes: Jan Hudec bulb@... wrote: (it would be nicest if sqlite could get bitwise not one day). -x-1 is equivalent, assuming two's complement representation. Gotcha! No, it's not. -1-x is equivalent, but -x-1 is not: sqlite select -1-(163), -(163)-1; 9223372036854775807|9.22337203685478e+18 Besides my point was not that it's not possible, but that it would be more readable with dedicated operator. Regards, Jan Hudec ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
[sqlite] SQLite in Xcode
Hello everyone. I am still trying to get SQLite to work on my Mac. I want to make sure I am doing what I should be doing. Here are the steps I have taken: 1.) I downloaded and uncompressed sqlite-autoconf-3070602.tar.gz from the SQLite download page. 2.) I moved SQLite3.c and SQLite3.h into my source folder and added them to the project. I made no changes to the code nor did I do anything special when I added them to my project (i.e. I did not set any special compile flags-I simply added the two files to the project). 3.) I compiled and received 1200+ errors. Since then I have tried using the sqlite.dylib file that comes with OSX but in doing so, some important SQLite functions (such as the prepare function) were not found during the link process. My most recent attempt has been to follow the instructions that come with the tarball I downloaded to create my own SQLite library. When I run ./configure, the procedure errors out, saying that it could not find an acceptable C compiler in the $Path. Anyone have any new possibilities to try? BTW, (and I apologize for not sharing this sooner-it didn't occur to me that it might be relevant until recently) I am using SQLite3 in concert with the InDesign SDK to produce an InDesign plugin (which we freely distribute to our customers). There is a possibility that the SDK has something going on that causes the massive explosion of errors. And finally, the very first time I used SQLite3 on my Windows box, upon compilation, it generated a whopping 200 errors, and continued to do so until I turned off using precompiled headers. I cannot see a way to do this in Xcode. Perhaps that is my problem? R, John A.M. Darnell Senior Programmer Walsworth Publishing Company Brookfield, MO John may also be reached at johnamdarn...@gmail.commailto:johnamdarn...@gmail.com Trivia question Trivia question: In The Lord of the Rings,Leglolas was a prince among the Silvan Elves. What was the name of his father the King? For extra credit, what was his surname? ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
Re: [sqlite] SQLite in Xcode
2.) I moved SQLite3.c and SQLite3.h into my source folder and added them to the project. I made no changes to the code nor did I do anything special when I added them to my project (i.e. I did not set any special compile flags-I simply added the two files to the project). 3.) I compiled and received 1200+ errors. Try to change settings for sqlite3.c so that it is compiled as C not as C++ (I don't know exactly where are those settings in XCode, I believe you should know that). Pavel On Thu, May 26, 2011 at 10:49 AM, john darnell john.darn...@walsworth.com wrote: Hello everyone. I am still trying to get SQLite to work on my Mac. I want to make sure I am doing what I should be doing. Here are the steps I have taken: 1.) I downloaded and uncompressed sqlite-autoconf-3070602.tar.gz from the SQLite download page. 2.) I moved SQLite3.c and SQLite3.h into my source folder and added them to the project. I made no changes to the code nor did I do anything special when I added them to my project (i.e. I did not set any special compile flags-I simply added the two files to the project). 3.) I compiled and received 1200+ errors. Since then I have tried using the sqlite.dylib file that comes with OSX but in doing so, some important SQLite functions (such as the prepare function) were not found during the link process. My most recent attempt has been to follow the instructions that come with the tarball I downloaded to create my own SQLite library. When I run ./configure, the procedure errors out, saying that it could not find an acceptable C compiler in the $Path. Anyone have any new possibilities to try? BTW, (and I apologize for not sharing this sooner-it didn't occur to me that it might be relevant until recently) I am using SQLite3 in concert with the InDesign SDK to produce an InDesign plugin (which we freely distribute to our customers). There is a possibility that the SDK has something going on that causes the massive explosion of errors. And finally, the very first time I used SQLite3 on my Windows box, upon compilation, it generated a whopping 200 errors, and continued to do so until I turned off using precompiled headers. I cannot see a way to do this in Xcode. Perhaps that is my problem? R, John A.M. Darnell Senior Programmer Walsworth Publishing Company Brookfield, MO John may also be reached at johnamdarn...@gmail.commailto:johnamdarn...@gmail.com Trivia question Trivia question: In The Lord of the Rings,Leglolas was a prince among the Silvan Elves. What was the name of his father the King? For extra credit, what was his surname? ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
Re: [sqlite] SQLite in Xcode
On 26 mai 2011, at 16:49, john darnell wrote: Hello everyone. I am still trying to get SQLite to work on my Mac. I want to make sure I am doing what I should be doing. Here are the steps I have taken: 1.) I downloaded and uncompressed sqlite-autoconf-3070602.tar.gz from the SQLite download page. 2.) I moved SQLite3.c and SQLite3.h into my source folder and added them to the project. I made no changes to the code nor did I do anything special when I added them to my project (i.e. I did not set any special compile flags-I simply added the two files to the project). 3.) I compiled and received 1200+ errors. Since then I have tried using the sqlite.dylib file that comes with OSX but in doing so, some important SQLite functions (such as the prepare function) were not found during the link process. This shouldn't happen. My app links just fine. You must add libsqlite3.dylib to the Link binary with libraries section of the Build Phases pane of your target settings. Jean-Denis ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
Re: [sqlite] SQLite in Xcode
On 26 May 2011, at 3:49pm, john darnell wrote: I am still trying to get SQLite to work on my Mac. I want to make sure I am doing what I should be doing. Here are the steps I have taken: 1.) I downloaded and uncompressed sqlite-autoconf-3070602.tar.gz from the SQLite download page. The top one, with just .c and .h is adequate. You shouldn't end up using any of the scripts or makefiles for building. 2.) I moved SQLite3.c and SQLite3.h into my source folder and added them to the project. I made no changes to the code nor did I do anything special when I added them to my project (i.e. I did not set any special compile flags-I simply added the two files to the project). Make sure sqlite3.c is 'ticked' next to 'Target Membership' for your product file. Also make sure sqlite3.c is listed as 'C source' and sqlite3.h is listed as 'C header' under 'Identity and Type'. 3.) I compiled and received 1200+ errors. Try the above, and if those don't go away, post the first one or two (note all 1200+) here. Simon. ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
Re: [sqlite] [BUG] Silent change in intergeral overflow handling in 3.7.6
On May 26, 2011, at 2:54 AM, Jan Hudec wrote: Gotcha! No, it's not. -1-x is equivalent, but -x-1 is not: sqlite select -1-(163), -(163)-1; 9223372036854775807|9.22337203685478e+18 Besides my point was not that it's not possible, but that it would be more readable with dedicated operator. Yes. The fact that a negative number (-1) minus a large positive number (1 63) results in a positive number does not seem to be in concert with the goal of handling arithmetic overflows sensibly. This is especially egregious in the second case where the result of negating a large positive number and subtracting one is positive AND REAL (double float). Ideally SQLite would guarantee one of (in my order of preference): 1) Integer operations that overflow 64 bits behave as wrapped twos complement, i.e., they return the low 64 bits of the infinite precision twos complement integer result 2) Integer operations that overflow 64 bits result in floating point values that approximate the result with the precision of IEEE double 3) Integer operations that overflow have no guaranteed result I think option 2 is what SQLite is supposed to do (per the release notes), but is failing in both cases of this example. e ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
Re: [sqlite] SQLite in Xcode
-Original Message- From: sqlite-users-boun...@sqlite.org [mailto:sqlite-users-boun...@sqlite.org] On Behalf Of Jean-Denis Muys Sent: Thursday, May 26, 2011 10:08 AM To: General Discussion of SQLite Database Subject: Re: [sqlite] SQLite in Xcode On 26 mai 2011, at 16:49, john darnell wrote: Since then I have tried using the sqlite.dylib file that comes with OSX but in doing so, some important SQLite functions (such as the prepare function) were not found during the link process. This shouldn't happen. My app links just fine. You must add libsqlite3.dylib to the Link binary with libraries section of the Build Phases pane of your target settings. Jean-Denis Thank you, Jean-Denis for this information. I initially added the libsqlite3.dylib into the Libraries-API-Debug group. In so doing, Xcode automatically added the same dylib to the Link Binary with Libraries phase of my debug version. Are you suggesting that I should have added it directly? ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
Re: [sqlite] SQLite in Xcode
On 26 mai 2011, at 17:23, john darnell wrote: On 26 mai 2011, at 16:49, john darnell wrote: Since then I have tried using the sqlite.dylib file that comes with OSX but in doing so, some important SQLite functions (such as the prepare function) were not found during the link process. This shouldn't happen. My app links just fine. You must add libsqlite3.dylib to the Link binary with libraries section of the Build Phases pane of your target settings. Jean-Denis Thank you, Jean-Denis for this information. I initially added the libsqlite3.dylib into the Libraries-API-Debug group. In so doing, Xcode automatically added the same dylib to the Link Binary with Libraries phase of my debug version. Are you suggesting that I should have added it directly? I suppose that as long as that library appears in the Link Binary with Libraries list, it should be OK, but I only ever did it the way I described. Now I don't get it that you mention your debug version. Debug is a configuration, and when I add that library, it gets added to my target whatever the configuration. I suppose being able to specify to include a library only for some configurations could be useful, but I don't even know how to do that. Also I don't have a Libraries-API-Debug group. My project, created from a standard Apple template, only has a Frameworks groups where I put all my libraries. Since that group is not associated with a directory, it should normally be irrelevant which group you use. Maybe you could copy/paste the exact link error you get to the list. I can also setup a dummy project with SQLite if you like. Jean-Denis ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
Re: [sqlite] SQLite in Xcode
Mr. Slavin, here's the information you requested: Please note that I am working in Xcode 3.1.3. That may or may not be part/all of the problem. -Original Message- From: sqlite-users-boun...@sqlite.org [mailto:sqlite-users-boun...@sqlite.org] On Behalf Of Simon Slavin Sent: Thursday, May 26, 2011 10:01 AM To: General Discussion of SQLite Database Subject: Re: [sqlite] SQLite in Xcode 1.) I downloaded and uncompressed sqlite-autoconf-3070602.tar.gz from the SQLite download page. The top one, with just .c and .h is adequate. You shouldn't end up using any of the scripts or makefiles for building. I can confirm that I only moved/added sqlite3.c and sqlite3.h into the source folder and into the project. 2.) I moved SQLite3.c and SQLite3.h into my source folder and added them to the project. I made no changes to the code nor did I do anything special when I added them to my project (i.e. I did not set any special compile flags-I simply added the two files to the project). Make sure sqlite3.c is 'ticked' next to 'Target Membership' for your product file. I am not someone who uses Xcode frequently--I usually develop on Windows and port t the Mac, but if by Target Membership you mean the last column in the pane that lists all files when the project name is selected in the Groups Files pane, headed by an icon that looks like a target, the sqlite3.c file is 'ticked.' Also make sure sqlite3.c is listed as 'C source' and sqlite3.h is listed as 'C header' under 'Identity and Type'. I clicked the sqlite3.c filename in the Groups Files panel, clicked the information icon (the blue button with the white 'i' at the top of the window). Under the General tab, under the File Type dropdown, the file is listed as 'sourcecode.c.c', and the sqlite3.h file is listed as 'sourcecode.c.h.' If you have in mind some other location, please let me know. 3.) I compiled and received 1200+ errors. Try the above, and if those don't go away, post the first one or two (note all 1200+) here. Here are two errors out of the 1200+ errors generated (I tried to include as much information as possible to help identify the problem. Please forgive if I am overdoing it...): Compiling /.../sqlite3.c Error:invalid conversion from void * to char * This error was marked at line 13726. Error:forward declaration of 'struct SrcList_item' This error was marked at line 11047. There were six warnings as well, most of which were warnings about division by zero. R, John Simon. ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
Re: [sqlite] SQLite in Xcode
On 26 May 2011, at 5:35pm, john darnell wrote: Make sure sqlite3.c is 'ticked' next to 'Target Membership' for your product file. I am not someone who uses Xcode frequently--I usually develop on Windows and port t the Mac, but if by Target Membership you mean the last column in the pane that lists all files when the project name is selected in the Groups Files pane, headed by an icon that looks like a target, the sqlite3.c file is 'ticked.' Also make sure sqlite3.c is listed as 'C source' and sqlite3.h is listed as 'C header' under 'Identity and Type'. I clicked the sqlite3.c filename in the Groups Files panel, clicked the information icon (the blue button with the white 'i' at the top of the window). Under the General tab, under the File Type dropdown, the file is listed as 'sourcecode.c.c', and the sqlite3.h file is listed as 'sourcecode.c.h.' If you have in mind some other location, please let me know. No, both the above suggest you did the right thing. One thing that occurs to me is that you do not need both the dynamic library and the .c .h files. If you have included the .c code on your project, you should not be including or linking to anything else with 'sqlite' in its filename. Similarly, if you are linking against an SQLite library, you don't need the .c source code, just the version of the .h file that should be found with that library. I'm not sure whether including both source code and library would cause the problems you're describing, though. 3.) I compiled and received 1200+ errors. Try the above, and if those don't go away, post the first one or two (note all 1200+) here. Here are two errors out of the 1200+ errors generated (I tried to include as much information as possible to help identify the problem. Please forgive if I am overdoing it...): I'm sorry about the incredibly picky questions we're asking, but Xcode with an existing project is huge and complicated and there doesn't seem to be any other way to figure out what's going on. Compiling /.../sqlite3.c Error:invalid conversion from void * to char * This error was marked at line 13726. Error:forward declaration of 'struct SrcList_item' This error was marked at line 11047. There were six warnings as well, most of which were warnings about division by zero. Maybe someone clever at C can explain these. I'm terrible at C. ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
Re: [sqlite] SQLite in Xcode
-Original Message- From: sqlite-users-boun...@sqlite.org [mailto:sqlite-users-boun...@sqlite.org] On Behalf Of Simon Slavin Sent: Thursday, May 26, 2011 12:38 PM To: General Discussion of SQLite Database Subject: Re: [sqlite] SQLite in Xcode One thing that occurs to me is that you do not need both the dynamic library and the .c .h files. If you have included the .c code on your project, you should not be including or linking to anything else with 'sqlite' in its filename. Similarly, if you are linking against an SQLite library, you don't need the .c source code, just the version of the .h file that should be found with that library. I can promise you that I had removed the .c file from the project. However, I am intrigued by your remark that I should be using the header file that comes with the .dylib. I had been using the header that came with the amalgamation. Where can I find the header that should be used with the .dylib? I'm sorry about the incredibly picky questions we're asking, but Xcode with an existing project is huge and complicated and there doesn't seem to be any other way to figure out what's going on. On that we both agree. I don't mind the questions, not even a little bit. I am dually afraid of two things when I correspond with this list: 1.) I'm not giving enough information 2.) I'm being so wordy that no one will want to look at my questions/responses (there is a reason my moniker is 'Pedantic' :). R, John ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
Re: [sqlite] SQLite in Xcode
On 26 May 2011, at 7:38pm, john darnell wrote: However, I am intrigued by your remark that I should be using the header file that comes with the .dylib. I had been using the header that came with the amalgamation. Where can I find the header that should be used with the .dylib? I'm not sure what .dylib you're using. The standard installation of OS X with the Developer tools has sqlite header files in /usr/include/sqlite3.h and /Developer/SDKs/MacOSX10.6.sdk/usr/include/sqlite3.h which may or may not be identical to each-other. Wherever you got your library from, I would have thought it would point blatantly at a header file they wanted you to use. Simon. ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
Re: [sqlite] SQLite in Xcode
I'm not sure what .dylib you're using. The standard installation of OS X with the Developer tools has sqlite header files in /usr/include/sqlite3.h and /Developer/SDKs/MacOSX10.6.sdk/usr/include/sqlite3.h which may or may not be identical to each-other. Wherever you got your library from, I would have thought it would point blatantly at a header file they wanted you to use. They might be and I just am not familiar enough with OSX to recognize it. Thanks for the information. I'll see what it brings me... ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
Re: [sqlite] SQLite in Xcode
Here are two errors out of the 1200+ errors generated (I tried to include as much information as possible to help identify the problem. Please forgive if I am overdoing it...): Compiling /.../sqlite3.c Error:invalid conversion from void * to char * This error was marked at line 13726. IIRC, this error is the most famous difference between C and C++. And if this error appears then you are compiling it as C++, not as C. Pavel On Thu, May 26, 2011 at 12:35 PM, john darnell john.darn...@walsworth.com wrote: Mr. Slavin, here's the information you requested: Please note that I am working in Xcode 3.1.3. That may or may not be part/all of the problem. -Original Message- From: sqlite-users-boun...@sqlite.org [mailto:sqlite-users-boun...@sqlite.org] On Behalf Of Simon Slavin Sent: Thursday, May 26, 2011 10:01 AM To: General Discussion of SQLite Database Subject: Re: [sqlite] SQLite in Xcode 1.) I downloaded and uncompressed sqlite-autoconf-3070602.tar.gz from the SQLite download page. The top one, with just .c and .h is adequate. You shouldn't end up using any of the scripts or makefiles for building. I can confirm that I only moved/added sqlite3.c and sqlite3.h into the source folder and into the project. 2.) I moved SQLite3.c and SQLite3.h into my source folder and added them to the project. I made no changes to the code nor did I do anything special when I added them to my project (i.e. I did not set any special compile flags-I simply added the two files to the project). Make sure sqlite3.c is 'ticked' next to 'Target Membership' for your product file. I am not someone who uses Xcode frequently--I usually develop on Windows and port t the Mac, but if by Target Membership you mean the last column in the pane that lists all files when the project name is selected in the Groups Files pane, headed by an icon that looks like a target, the sqlite3.c file is 'ticked.' Also make sure sqlite3.c is listed as 'C source' and sqlite3.h is listed as 'C header' under 'Identity and Type'. I clicked the sqlite3.c filename in the Groups Files panel, clicked the information icon (the blue button with the white 'i' at the top of the window). Under the General tab, under the File Type dropdown, the file is listed as 'sourcecode.c.c', and the sqlite3.h file is listed as 'sourcecode.c.h.' If you have in mind some other location, please let me know. 3.) I compiled and received 1200+ errors. Try the above, and if those don't go away, post the first one or two (note all 1200+) here. Here are two errors out of the 1200+ errors generated (I tried to include as much information as possible to help identify the problem. Please forgive if I am overdoing it...): Compiling /.../sqlite3.c Error:invalid conversion from void * to char * This error was marked at line 13726. Error:forward declaration of 'struct SrcList_item' This error was marked at line 11047. There were six warnings as well, most of which were warnings about division by zero. R, John Simon. ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
Re: [sqlite] SQLite in Xcode
Thank you Mr. Ivanov. I can buy what you are saying 100%. What I need to know is how to tell Xcode to compile that file as a C file if the standard procedure is not working. I recoup: the files are being classified as sourcecode.c.c and sourcecode.c.h. What else do I need to do? R, John -Original Message- From: sqlite-users-boun...@sqlite.org [mailto:sqlite-users-boun...@sqlite.org] On Behalf Of Pavel Ivanov Sent: Thursday, May 26, 2011 1:56 PM To: General Discussion of SQLite Database Subject: Re: [sqlite] SQLite in Xcode Here are two errors out of the 1200+ errors generated (I tried to include as much information as possible to help identify the problem. Please forgive if I am overdoing it...): Compiling /.../sqlite3.c Error:invalid conversion from void * to char * This error was marked at line 13726. IIRC, this error is the most famous difference between C and C++. And if this error appears then you are compiling it as C++, not as C. Pavel On Thu, May 26, 2011 at 12:35 PM, john darnell john.darn...@walsworth.com wrote: Mr. Slavin, here's the information you requested: Please note that I am working in Xcode 3.1.3. That may or may not be part/all of the problem. -Original Message- From: sqlite-users-boun...@sqlite.org [mailto:sqlite-users- boun...@sqlite.org] On Behalf Of Simon Slavin Sent: Thursday, May 26, 2011 10:01 AM To: General Discussion of SQLite Database Subject: Re: [sqlite] SQLite in Xcode 1.) I downloaded and uncompressed sqlite-autoconf-3070602.tar.gz from the SQLite download page. The top one, with just .c and .h is adequate. You shouldn't end up using any of the scripts or makefiles for building. I can confirm that I only moved/added sqlite3.c and sqlite3.h into the source folder and into the project. 2.) I moved SQLite3.c and SQLite3.h into my source folder and added them to the project. I made no changes to the code nor did I do anything special when I added them to my project (i.e. I did not set any special compile flags-I simply added the two files to the project). Make sure sqlite3.c is 'ticked' next to 'Target Membership' for your product file. I am not someone who uses Xcode frequently--I usually develop on Windows and port t the Mac, but if by Target Membership you mean the last column in the pane that lists all files when the project name is selected in the Groups Files pane, headed by an icon that looks like a target, the sqlite3.c file is 'ticked.' Also make sure sqlite3.c is listed as 'C source' and sqlite3.h is listed as 'C header' under 'Identity and Type'. I clicked the sqlite3.c filename in the Groups Files panel, clicked the information icon (the blue button with the white 'i' at the top of the window). Under the General tab, under the File Type dropdown, the file is listed as 'sourcecode.c.c', and the sqlite3.h file is listed as 'sourcecode.c.h.' If you have in mind some other location, please let me know. 3.) I compiled and received 1200+ errors. Try the above, and if those don't go away, post the first one or two (note all 1200+) here. Here are two errors out of the 1200+ errors generated (I tried to include as much information as possible to help identify the problem. Please forgive if I am overdoing it...): Compiling /.../sqlite3.c Error:invalid conversion from void * to char * This error was marked at line 13726. Error:forward declaration of 'struct SrcList_item' This error was marked at line 11047. There were six warnings as well, most of which were warnings about division by zero. R, John Simon. ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
Re: [sqlite] SQLite in Xcode
On 26 May 2011, at 8:12pm, john darnell wrote: Thank you Mr. Ivanov. I can buy what you are saying 100%. What I need to know is how to tell Xcode to compile that file as a C file if the standard procedure is not working. I recoup: the files are being classified as sourcecode.c.c and sourcecode.c.h. What else do I need to do? Take a look at the other options in the popup. Are their options for 'C Source' and 'C Header' ? Simon. ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
[sqlite] using a view for fts
Consider CREATE VIRTUAL TABLE fts_text USING fts4 (id, content); .. populate the above table, then .. SELECT rowid, Snippet(fts_text) FROM fts_text WHERE fts_text MATCH ?; If I try to do something like CREATE VIEW v_find AS SELECT rowid, Snippet(fts_text) content FROM fts_text; SELECT rowid, content FROM v_find WHERE fts_text MATCH ?; I understandably get an error no such column fts_text. The above is a contrived example, but can I build a view out of a complicated fts query so I can then pass parameters to the view later on? ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
Re: [sqlite] SQLite in Xcode
Thank you Mr. Slavin. I checked as you suggest and there were no other options listed in the dropdown. However, with the help of my good friend and colleague Mark Woodring I think we found what we needed to change. First, under the Project info dialog, under the Build tab, under Language, there is a line item called Compile Source As. There are five options: C, C++, Objective-C, Objective_C++, and According to file type. The project as created was compiling all files as C++ files. I changed the option to According to File Type. That got rid of 200 of the 1200+ errors. In that same segment was an item called Increase Sharing of Precompiled Headers. I unchecked it as well, and that seemed to get rid of all but four warnings. Those warnings are as follows: Warning: declaration of fsInfo shadows a previous local Warning: shadowed declaration is here Warning: declaration of wait shadows a global decclaration Warning: shadowed declaration is here I am undecided as to whether I want to do anything about these warnings. They report that a variable has already been created someplace in that scope with the same name, and now inside a block inside that scope the programmer is creating a new variable with the same name. On Windows, Visual Studio doesn't care. In Xcode 3.1.3, it lets the programmer know that he is doing it. It's up to her to decide to fix it. Thanks to all of you who helped resolve this difficult problem. R, John -Original Message- From: sqlite-users-boun...@sqlite.org [mailto:sqlite-users-boun...@sqlite.org] On Behalf Of Simon Slavin Sent: Thursday, May 26, 2011 2:13 PM To: General Discussion of SQLite Database Subject: Re: [sqlite] SQLite in Xcode On 26 May 2011, at 8:12pm, john darnell wrote: Thank you Mr. Ivanov. I can buy what you are saying 100%. What I need to know is how to tell Xcode to compile that file as a C file if the standard procedure is not working. I recoup: the files are being classified as sourcecode.c.c and sourcecode.c.h. What else do I need to do? Take a look at the other options in the popup. Are their options for 'C Source' and 'C Header' ? Simon. ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
Re: [sqlite] SQLite in Xcode
One final message on this topic. In my last message I mentioned four warnings
remaining when I compile the file. I decided to at least look at them in situ
and see what they were. It turned out that it took very little to fix them
AFAIK. Here is what I did:
Warning: declaration of fsInfo shadows a previous local
Warning: shadowed declaration is here
To resolve the above two warnings I changed this code:
(Around line 29173):
struct statfs fsinfo;
if(statfs(zPath, fsInfo) == -1){
to
struct statfs fsinfo1;
if(statfs(zPath, fsInfo1) == -1){
**(note the change in fsInfo)**
AND
(found around line 29190)
useProxy = !(fsInfo.f_flagsMNT_LOCAL);
to this:
useProxy = !(fsInfo1.f_flagsMNT_LOCAL);
**(note the change in fsInfo)**
Warning: declaration of wait shadows a global decclaration
Warning: shadowed declaration is here
To resolve these two warnings I changed this code (found around 29859):
/* Not always defined in the headers as it ought to be */
Extern int gethostuuid(uuid_t id, const struct timespec wait);
To this:
/* Not always defined in the headers as it ought to be */
Extern int gethostuuid(uuid_t id, const struct timespec twait);
**(note the change in wait)**
I would appreciate it if those of you who know the code would double-check my
hubris and let me know if I have done something monstrously (or maybe even just
a little) stupid. It wouldn't be the first time...
R,
John
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Re: [sqlite] SQLite in Xcode
On 26 May 2011, at 9:56pm, john darnell wrote: One final message on this topic. In my last message I mentioned four warnings remaining when I compile the file. I decided to at least look at them in situ and see what they were. It turned out that it took very little to fix them AFAIK. Here is what I did: Having done that, clean the project (which should throw away all precompiles and symbols) and compile again from scratch. That might fix the warnings. Or it might not. Simon. ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
Re: [sqlite] using a view for fts
Use AS to ensure that views'columns get useful column names. Nico -- ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
Re: [sqlite] [BUG] Silent change in intergeral overflow handling in 3.7.6
On Wed, May 25, 2011 at 4:40 AM, Jan Hudec b...@ucw.cz wrote: I need condition object_id = side_id ~(1 63) but that's not valid syntax. Yeah it is. Try, for example: SELECT 1234 ~(163); SELECT (-1234) ~(163); -- D. Richard Hipp d...@sqlite.org ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
Re: [sqlite] SQLite in Xcode
On 27/05/2011, at 12:49 AM, john darnell wrote: I am still trying to get SQLite to work on my Mac. I want to make sure I am doing what I should be doing. Here's a simple answer: 1. Add the sqlite library to your target's build phase. 2. Add an Objective C wrapper class to your project, such as the one by Matteo Bertozzi: http://th30z.blogspot.com/2008/11/objective-c-sqlite-wrapper_8445.html 2.1 Download the Sqlite.h and SQLite.m files 2.2 Add them to your project. 3. To call SQLite from your code, simply import the Sqlite wrapper class and use either the executeNonQuery or executeQuery method. The executeQuery method returns an array of dictionaries: #import Sqlite.h Sqlite* sqlite = [[Sqlite alloc] initWithFile:@path to file]; NSArray* resultDictArray = [sqlite executeQuery:@select Name, Quantity from Ingredients order by Name]; [sqlite executeNonQuery:@delete from Ingredients where Name = 'squash']; [sqlite close]; It's best to create the sqlite object as an ivar within your class, and release it in your class's dealloc. I presented this recently at a CocoaHeads meeting. You can view the slideshow here: http://www.barefeetware.com/sqlite/iosxcode/?ml Tom BareFeetWare -- Comparison of SQLite GUI tools: http://www.barefeetware.com/sqlite/compare/?ml ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
Re: [sqlite] SQLite in Xcode
On 27 May 2011, at 1:35am, BareFeetWare wrote: Here's a simple answer: Tom, John ran across two common problems with SQLite and Xcode: A) Xcode seems to want to interpret .c and .h files as C++ instead of C. B) Confusion common to people who normally program for Windows or non-Open systems about what combination of files they need: a library, a framework, C source, a .h file. An explanation of these points somewhere would be great. Simon. ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
Re: [sqlite] Is it possible to optimize the read performanceof a C++ app using sqlite pragma journal_mode = wal pragmawal_checkpoint?
Simon Slavin, Thank you for your suggestion. Our deduper prototoype uses fuzzy matching methods such as the Levenshtein Distance to detect duplicates. We have found that these fuzzy matching methods are best implemented in C++ for processing time requirements. We would still like to know your experience with SQLite WAL databases compared to SQlite non-WAL databases. Particularly, we are in the sqlite read processing in SQLIte WAL databases. Is possible to SQLiTe WAL databases to have faster read processing than SQLite non-WAL databases. If so, what method to use to gain the read improvement? Thank you. ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
Re: [sqlite] Is it possible to optimize the read performanceof a C++ app using sqlite pragma journal_mode = wal pragmawal_checkpoint?
On 27 May 2011, at 2:05am, Frank Chang wrote: Simon Slavin, Thank you for your suggestion. Our deduper prototoype uses fuzzy matching methods such as the Levenshtein Distance to detect duplicates. We have found that these fuzzy matching methods are best implemented in C++ for processing time requirements. Okay, you are correct. A distance metric means you can't use the dodge I described. Sorry. We would still like to know your experience with SQLite WAL databases compared to SQlite non-WAL databases. Particularly, we are in the sqlite read processing in SQLIte WAL databases. Is possible to SQLiTe WAL databases to have faster read processing than SQLite non-WAL databases. If so, what method to use to gain the read improvement I hope that other people will answer this. However since speed is important to you, if you have only one thread of one process using SQLite you can save time using PRAGMAs which turn off the multi-process multi-user stuff. In fact you might be able to turn journalling off entirely. Simon. ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
Re: [sqlite] Is it possible to optimize the read performanceof a C++ app using sqlite pragma journal_mode = wal pragmawal_checkpoint?
Simon Slavin, Thank you for your suggestion. Our deduper prototoype uses fuzzy matching methods such as the Levenshtein Distance to detect duplicates. We have found that these fuzzy matching methods are best implemented in C++ for processing time requirements. We would still like to know your experience with SQLite WAL databases compared to SQlite non-WAL databases. Particularly, we are in the sqlite read processing in SQLIte WAL databases. Is possible to SQLiTe WAL databases to have faster read processing than SQLite non-WAL databases. If so, what method to use to gain the read improvement? Thank you. It is possible that you would see the biggest improvement by implementing your matching method in a plain C SQLite extension. Doing would keep moving/converting data back and forth to a minimum as the workload would be made as close to the engine as possible. I mail you a download link to an extension offering a Unicode-aware fuzzy compare function (Levhenshtein-Damerau exactly). Have a look at it, play with it to see how it can fit part of your bill and adapt the code as you whish. Like Simon, I think you should get rid of journaling in your case. ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
Re: [sqlite] SQLite in Xcode
On 27/05/2011, at 10:42 AM, Simon Slavin wrote: Tom, John ran across two common problems with SQLite and Xcode: A) Xcode seems to want to interpret .c and .h files as C++ instead of C. B) Confusion common to people who normally program for Windows or non-Open systems about what combination of files they need: a library, a framework, C source, a .h file. An explanation of these points somewhere would be great. I bypassed that whole issue by just using the SQLite framework built into Mac OSX and iOS, and by using an SQLite wrapper for Objective C. Then you don't have to worry about compiling SQLite source files into your project or even have to bother with the low level sqlite3_ C calls. The only code you then have to write is effectively an nice Objective-C executeQuery: method call, which returns and array of dictionaries. It's all very straight forward that way. The slideshow makes it pretty easy to follow: http://www.barefeetware.com/sqlite/iosxcode/?ml Thanks, Tom BareFeetWare -- Comparison of SQLite GUI tools: http://www.barefeetware.com/sqlite/compare/?ml ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
Re: [sqlite] Is it possible to optimize the read performanceof a C++ app using sqlite pragma journal_mode = wal pragma
Roger Binns, Thank you for your reply. I understand what you are saying that we should drop the sqlite3_wal_checkpoint_v2(Database,main,SQLITE_CHECKPOINT_FULL, // number1,number2); after the commit transaction ReturnValue=sqlite3_prepare(Database,COMMIT,-1,Statement,0); status = sqlite3_step(Statement); sqlite3_finalize(Statement); We will try testing our deduper prototype using a sqlite WAL database without the wal checkpoint after commit. Would you expect us to get faster sqlite WAL reads without the wal checkpoint after commit? Is it possible there is another method for obtaining get faster sqlite WAL reads ? Thank you for your help. ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
