I am working on SQLite File Encryption. I have added sqlCipher & crypto frameworks successfully in my project.
Now when I try to compile my application on this line
int rc = sqlite3_key(database, [key UTF8String], strlen([key UTF8String]));
it says Implicit declaration of function 'sqlite3_key'
So above line "implicit declaration" sounds to me like function is defined but not declared. But where I have to declared ?
While searching over Internet, under this article, it says like SQLite Encryption Extension(SEE) is not available publically. I have to purchase it of cost around $2000.
SEE -> http://www.hwaci.com/sw/sqlite/see.html
So this is the only reason I am getting Implicit declaration & False response while sqlite encryption process ?
If you are using SQLCipher, you need to define SQLITE_HAS_CODEC in your application's C Flags. Thats all.
Yes, that is the reason you are getting that compiler warning. The function sqlite3_key() is not defined in the version of libsqlite3 included with iOS. Adding in a function declaration isn't going to help-- it would fix that compiler warning, but it would just mean you'll get a linker error since the function isn't defined anywhere.
If you purchased SEE you could probably build your own copy of SQLite, embed it in your app, and just not use the system's libsqlite3. That this would mean you'd have to say "yes" when the app store submission process asks if your app includes encryption, meaning extra paperwork and time before you could submit the app. I'm not certain whether there's any clear indication of whether Apple would accept it even then-- probably they would, but they've been known to surprise people.
Related
I changed Change in persistence.xml
I also changed column definition (columnDefinition="XDB.XMLType") for xml fields
I checked OpenJpa(http://openjpa.208410.n2.nabble.com/Oracle-XMLType-fetch-problems-td6208344.html) site and IBM (http://www.ibm.com/support/knowledgecenter/SS7J6S_7.5.0/com.ibm.wsadapters.jca.jdbc.doc/env/doc/rjdb_problemsolutions.html)
My env is OpenJpa 2.0 and WAS 7
its throwing exception
org.apache.openjpa.persistence.PersistenceException: ORA-06502: PL/SQL: numeric or value error: character string buffer too small
ORA-06512: at "SYS.XMLTYPE", line 169
Please suggest without changing OpenJpa2.0 as its part of IBM WebSphere Application Server V7.0 how can i handle sys.XMLTYPE data, i am migrating my application from db2 to Oracle in same environment.
Writing XML data can be tricky some times! Getting the correct drivers and things defined properly can have its challenges. I can not say exactly what you need to do given the lack of info on your domain model and such, but let me give some general things to look for. First, there is an XML test in the OpenJPA test framework if you want to make reference to it. It can be seen publicly here:
https://apache.googlesource.com/openjpa/+/refs/heads/trunk/openjpa-persistence-jdbc/src/test/java/org/apache/openjpa/jdbc/oracle/
Or, another test using an "XMLValueHandler" (likely this is beyond the scope of what you are looking for):
https://apache.googlesource.com/openjpa/+/refs/heads/trunk/openjpa-persistence-jdbc/src/test/java/org/apache/openjpa/persistence/xmlmapping/query/
Second, (stating the obvious) I assume you have a column in Oracle defined as "XMLTYPE". Also, I see you are using schema SYS. I'm sure you are aware but this is a system/admin schema......just for sanity sake you might want to first get things running using a non-system/admin schema just so we don't get hung up with any issues with your OpenJPA client not having the correct permissions.
Next, you need the following definition:
#Lob #Basic
#Column(name = "ANXMLCOLUMN", columnDefinition="XMLCOLUMN XMLType")
private String anXMLString;
The #Lob I think will be necessary if you are using data greater than 4000 chars (this was mentioned in one of the comments). To start I'd use a very small set of data (a couple characters), once that works, then experiment with > 4k.
Next, make sure to use the correct JDBC driver. The last time I experimented with an XMLType I used the Oracle JDBC 11.2.0.2 driver.
Finally, you might need to use the property "openjpa.jdbc.DBDictionary" with value "oracle(supportsSetClob=true,maxEmbeddedClobSize=-1)". Again, experiment with this AND look at the OpenJPA documentation on these properties to determine if they are necessary in your scenario. I think the supportsSetClob=true will only be necessary for older version (pre-2.2.x) of OpenJPA. You might also need to use property "openjpa.jdbc.SchemaFactory" with value "native". I would suggest you first try without either or these two properties. If that doesn't help, then experiment with these two properties. I know this is vague, but I don't know what your DDL or domain model looks like so I have to keep in vague.
Thanks,
Heath Thomann
So far I have been able to succesfully use boost, cereal and gtest using biicode but I am having troubles with sqlite. I am trying to use it doing the following:
#include <sqlite3.h>
So I edited my biicode.conf to include those lines, including the alising for the header:
[requirements]
sqlite/sqlite:9
[includes]
sqlite.h: sqlite/sqlite/sqlite3/sqlite3.h
But when I try to call bii cpp:build it does the following
WARN: Removing unused reference to "sqlite/sqlite: 9" from myuser/test "requirements"
Then I ended up with the expected:
database_impl.cpp:(.text+0x516): undefined reference to `sqlite3_exec'
Surprisingly, the compilation succedd even though sqlite3.h is obviously not included but that's maybe because the call to sqlite is from a template function.
I have looked at the example but CMakeList.txt does not seem to add any additional includes directories. For example for boost I had to add:
SET(Boost_USE_STATIC_LIBS OFF)
bii_find_boost(COMPONENTS chrono system filesystem log thread REQUIRED)
target_include_directories(${BII_BLOCK_TARGET} INTERFACE ${Boost_INCLUDE_DIRS})
target_link_libraries(${BII_BLOCK_TARGET} INTERFACE ${Boost_LIBRARIES})
But the two examples I found here and here don't seem to add anything to the includes directories, not even a link folder. I suppose sqlite has to be compiled with your sources so how do I make biicode add those files to my projects automatically ?
There're several problems. You just wrote in [includes] section sqlite.h instead of sqlite3.h and you should only write the prefix, sqlite/sqlite/sqlite3, later instead of the full dependency name.
Then, you can solve it so:
[requirements]
sqlite/sqlite: 9
[includes]
sqlite3.h: sqlite/sqlite/sqlite3
Or, you could try the SQLite version uploaded into fenix user:
[requirements]
fenix/sqlite: 0
[includes]
sqlite3.h: fenix/sqlite
Don't worry about a "WARN" message that says biicode is ignoring sqlite3.c file because it's harcoded into the block CMakeLists.txt to catch this file ;)
Note: you should write your external #includes's with double quotes instead of <>, because the last ones are referred to system headers and biicode could be using some system deps and you don't realize it.
in prokb,its mentioned
In 10.0B02 and above, the client session startup parameter -noincrwarn was reintroduced
to allow the selective suppression of the above four warning messages ONLY. Since the
execution of the 4GL statement: SESSION:SUPPRESS-WARNINGS = YES. suppresses ALL warning
messages during the session.
Where and how could i set i this startup parameter -noincrwarn to suppress this warning
message?
"SESSION:SUPPRESS-WARNINGS = YES." doesn't do much of anything useful. Or at least it didn't the last time I tested it.
The -mmax warning is harmless. It is a "soft" limit that is dynamically allocated and expanded as needed. You can ignore it. Or if the .lg file entries really bother you, you can simply increase it to a reasonable value. I routinely set it to 8192 for character sessions, 32768 for Windows. The default, as JensD says, is ludicrously low.
Startup parameters, such as -noincwarn, can set in a number of ways:
1) Via the command line. If your application starts via a script it will eventually invoke progress via "pro", "mpro", progress, prowin32, proapsv or some other executable (you can potentially link your own objects and create custom executables...) The command line that invokes Progress will have a number of parameters. You could add it there. Windows example:
#echo off
set DLC=\Progress\OpenEdge
%DLC%\bin\prowin32 -db mydb -p start.p -noincwarn
(On windows it is also common for the shortcut properties to have the command line listed.)
2) In a "pf" file. "PF" files are parameter files. They contain a list of parameters in a text file. This makes it easy to share and manage parameters between many scripts. To use a parameter file you need at least one -pf filename.pf parameter. Unix example:
#!/bin/sh
DLC=/usr/dlc
export DLC
${DLC}/bin/_progres -db mydb -pf mypf.pf
Where "mypf.pf" might contain:
# mypf.pf
-p start.p
-noincwarn
There is a global .pf file in the Progress install directory called startup.pf. You could also add it to that.
3) In an "ini file". Sort of like the pf file but more complicated. Indicated by the -ininame startup parameter. Can also be influenced by registry keys.
Why not removing or trying another value for -mmax? If you're moving from an old version of Progress it might be that -mmax is set very low.
The Maximum Memory (-mmax) client session parameter specifies the maximum amount of memory allocated for r-code segments, in kilobytes.
Source: http://knowledgebase.progress.com/articles/Article/P11351?popup=true
Large memory consumption might depend on complicated business logic (things like very large and or deeply nested procedures) so you might consider looking into that.
However a much easier fix would be to increase the value. Default is 3096, meaning each client "only" gets 3 Mb for this. Not a very large amount with today's standards.
If you really only want to suppress the message. Set -noincrwarn in your client side startup script (or corresponding .pf-file/startup.pf).
Hosting a WPF element (windows Presentation Foundation) in an OpenEdge application can cause application to crash if any message cover the window. It is also the case of this message.
In order to suppress any messages including message 5409 ()
According to article "HOW TO SUPPRESS WARNING MESSAGES (5407),(5408),(5409),(5410) FROM DISPLAYING ON CLIENT SCREENS."
I used with expected results SESSION:SUPPRESS-WARNINGS = YES. As the first line in the starting procedure of the aplication.
Using -noincrwarn as the session startup parameter had no effect in Open Edge 11.4
Supress openedge messages:
http://knowledgebase.progress.com/articles/Article/P79795?popup=true
.NET related error for OpenEdge-WPF hibrid application "Invisible or disabled control cannot be activated"
https://social.msdn.microsoft.com/Forums/windows/en-US/e8cf6431-2a59-4335-8b36-fc8f35083823/invisible-or-disabled-control-cannot-be-activated?forum=winforms
Users open files in our app through a QFileDialog. The order of the filenames is bizarre. What is determining the sorting order, and how can we make it sort by filenames, or otherwise impose our own sorting, perhaps giving it a pointer to our own comparison function?
The documentation and online forums haven't been helpful. Unless it's well hidden, there doesn't seem to be any sorting method, property, etc.
This is a primarily Linux app, but also runs on Macs. (I know nothing about Mac.)
Here is the juicy part of the source code:
QtFileDialog chooser(parent, caption, directory, filter);
/// QtFileDialog is our class derived from QFileDialog
chooser.setModal(true);
chooser.setAcceptMode(acceptMode);
chooser.setFileMode(fileMode);
QStringList hist = chooser.history();
chooser.setHistory(hist);
/* point "x" */
if(chooser.exec()) {
QStringList files = chooser.selectedFiles();
...blah blah blah...
From one of the answers, I tried an evil experiment, adding this ill-informed guesswork code at "point x":
QSortFilterProxyModel *sorter = new QSortFilterProxyModel();
sorter->sort(1); // ???
chooser.setProxyModel(sorter);
But this crashed spectacularly at a point about 33 subroutine calls deep from this level of code. I admit, even after reading the Qt4 documentation and sample code, I have no idea of the proper usage of QSortFilterProxyModel.
Are you using QFileDialog by calling exec()? If you are, you should have a button to switch the view to Detail View. This will give you some column headers that you can click on to sort the files. It should remember that mode the next time the dialog opens but you can force it by calling setViewMode(QFileDialog::Detail) before calling exec().
An alternative is to call the static function QFileDialog::getOpenFileName() which will open a file dialog that is native to the OS on which you are running. Your users may like the familiarity of this option better.
Update 1:
About sort order in screen cap from OP:
This screen capture is actually showing a sorted list. I don't know if the listing behaviour is originating from the Qt dialog or the underlying file system but I know Windows XP and later do it this way.
When sorting filenames with embedded numbers, any runs of consecutive digits are treated as a single number. With the more classic plain string sorting, files would be sorted like this:
A_A_10e0
A_A_9a05
Going character by character, the first 1 sorts before the 9.
.. But with numerical interpretation (as in Windows 7 at least), they are sorted as:
A_A_9a05
A_A_10e0
The 9 sorts before the 10.
So, the sorting you are seeing is alphabetical with numerical interpretation and not just straight character by character. Some deep digging may be required to see if that is Qt behaviour or OS behaviour and whether or not it can be configured.
Update 2:
The QSortFilterProxyModel will sort the strings alphabetically by default so there is not much work to using it to get the behavior you are looking for. Use the following code where you have "point x" in your example.. (you almost had it :)
QSortFilterProxyModel *sorter = new QSortFilterProxyModel();
sorter->setDynamicSortFilter(true); // This ensures the proxy will resort when the model changes
chooser.setProxyModel(sorter);
I think what you need to do is create a QSortFilterProxyModel which you then set in your QFileDialog with QFileDialog::setProxyModel(QAbstractProxyModel * proxyModel)
Here are some relevant links to the Qt 4.6 docs about it.
http://doc.trolltech.com/4.6/qfiledialog.html#setProxyModel
http://doc.trolltech.com/4.6/qsortfilterproxymodel.html#details
I don't think it depends upon the implementation of Qt libraries... But upon the Native OS implementation..
For example in Windows,
if you use QFileDialog, it will display the Files and Directories by Name sorted.. It is the same when used in other applications. In the sense that, if you try to open a file through MS- Word, it indeed displays the Files and directories as Name sorted by default..
And am not sure about other environments since am not used to them...
But in Windows, you can change the sorted order by right-click in the area of Files and Directories display and can select the options you like.. For e.g like Name,size,type, modified... And also which is similar, when you use an MS-Word application...
So, I believe it does depend on the Native OS implementation and not on QFileDialog's...
I have a parts application that is built on Flex 3 and I having a problem with the parts list. The parts list uses two objects:
Part
ArrayOfPart
I cache the parts list locally in a SharedObject. This has been working fine for a couple months. I added a new Boolean property to the Part class and re-imported web services (which shouldn't have affected anything) and now, I can save the ArrayOfPart SharedObject fine, but when I try to retrieve the SharedObject, I get "ArgumentError: Error #1063: Argument count mismatch on ArrayOfPart. Expected 1, got 0. AND then it DELETES my SOL file completely.
(I used RegisterClass on Part and ArrayOfPart, so they both are serializable to SharedObjects)
Here's the steps I followed to get the error:
Save the shared object:
so = SharedObject.getLocal("PartsList");
so.data.AllParts = AllParts;
so.flush();
Verify the SharedObject:
The SharedObject PartsList.sol exists where it should
I opened the SharedObject file and the ArrayOfPart data looks valid
Restart the application and it retrieves the parts list from the SharedObject. This is the line that throws the Error #1063 and causes the sol file to be deleted:
so = SharedObject.getLocal("PartsList");
It looks like the data may not be well-formed when it's saved in the SharedObject? Is this possible?
I solved my own problem.
The ArrayOfPart had a constructor with a parameter. When I removed the constructor, the error went away.
By the way, this was Flash 9.
This looks like a tough one.
I don't think it is a formation or serialization issue. Maybe something else in your code is writing to the shared object?
Is there any way you can share your source? This would help as I personally don't have enough info to diagnose what is going on w/o seeing the rest of the code :(
Also....
Is there anything else that is writing to or changing this shared object?
Are all my objects created in AS3 or are some in MXML (I have noticed that the Flex compiler does not always do a good job figuring out MXML).
What version of Flash do I have?
If its Flash 10 does the same problem occur in Flash 9?
Does this happen in all browsers and on all platforms?
Just a hunch, but, since I installed Flash Player 10, I am seeing lots of errors with Shared Objects when browsing. Could it be related to newly introduced sandbox/security restrictions?