To access the classes of CPP in qml.

I have set up to access the classes of PCB in qml in two ways: -.

1. create an attached object and the id of the class of CPP special and then access via the id.

2. fix the CPP on the qml class before pushing the page using the setContextProperty.

I wanted to know exactly when to use these two methods. There a difference in terms of scope and memory. Please explain.

Great Question!

Local objects:

Attached to objects, or who inherit from classes of cascades, is the simplest way to expose c ++ objects that relate to user interface elements. This is what you use if you want this object to BELONG to this context qml. It is created by the qml context when createObject is called (your qml file is loaded) and destroyed with the user interface objects. You can create many of these objects, anywhere you need. However, if you want to expose global properties, it is probably not a good approach.

The only time you would use objects attached to global stuff is if you expose a singleton class to allow qml set locations to manage signals (OrientationHandler is an example of that, without an OrientationHandler object, that you have nothing to connect).

Global objects:

Context properties can be considered global variables for a particular context, but with inheritance: context properties are passed to the contexts of the child. These objects are the PROPERTY of c ++, must be created before the creation of the object (createObject is called) and must remain valid for the lifetime of any context, they are placed in, but then destroyed is no longer necessary.

The disadvantage of context properties changing them can be expensive. If you set a context property after the createObject call (that is to say an object exists that was created from this context), then all links in javascript in this context will be re-evaluated. However, you can mitigate this issue by exposing an object that contains the value as a property, so that links to branch on change of signals well if necessary.

Inheritance is where shine context properties. There is a context root, which is in this context of default parent for new contexts. If you set a context property of the root context, it is available everywhere in any document qml. Here is an example of how do:

QmlDocument::defaultDeclarativeEngine()->rootContext()->setContextProperty("app", myApp);

Note: when I speak of createObject, I'm talking about QDeclarativeContext::createObject. It is called internally by QmlDocument::createRootObject.

For more information on the Qml contexts, see http://qt-project.org/doc/qt-4.8/qdeclarativecontext.html

For more information about the inner workings of qtdeclarative, see http://qt-project.org/doc/qt-4.8/qdeclarativeengine.html and http://qt-project.org/doc/qt-4.8/qdeclarativecomponent.html

http://Qt-project.org/doc/Qt-4.8/qtbinding.html is still relevant as well

Tags: BlackBerry Developers

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There is no native to retrieve method class of an object, but this utility function should work for you:

import flash.utils. *.
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Hi all

Sorry if this is already covered somewhere.

I currently have an application with a list view in my main.qml. I put a context property for my class app c ++ to be "app" in my main.qml. My list uses a custom list item that is defined in a file separate qml. The custom list item has a popup menu. In this context menu, I want to call Q_INVOKABLE functions that are part of my class from the main application in C++. What is the best way to be able to do? Should I just set the context property on my file qml of list item custom like I do with my main.qml or is there a better way?

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I think that this has been repeated several times, but as it is not really intuitive:
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Access the class from the loaded module

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(3) again, you will need to use a shared interface or a common base class.

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You can reference them as UIComponents. If they need to access other

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fonts loaded and don't refresh to use. Normally, you would

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the module is loaded. In this case, you specify MyriadPro as the

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To access the class fields in another package (reflection)

Hello

Given that I have not found a section named "Reflection" in the forums, I guessed that this would be the place to post my question.

I'm trying to implement a function called setField (field, value) in my classes using reflection. I have included this function in a base class so that its child classes could also use this feature.

The base class looks like:

public class Base {

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    public void setField( String fieldName, Object value) {
        Class cls = this.getClass();
        
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                Field field = cls.getDeclaredField(fieldName);
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                break;
            } catch (IllegalArgumentException ex) {
                Logger.getLogger(JPT.class.getName()).log(Level.SEVERE, null, ex);
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                Logger.getLogger(JPT.class.getName()).log(Level.SEVERE, null, ex);
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                Logger.getLogger(JPT.class.getName()).log(Level.SEVERE, null, ex);
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            cls = cls.getSuperclass();
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And then I have a class of the child:

public class Child extends Base {

    protected Integer y;

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So, basically, I need to get the type of features to work, i.e. to change a field in the child's class using the function available from the following base class:

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I hope that I have identified my problem. Please suggest how I can get the desired effect.

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field.setAccessible(true);

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It seems so basic, but I don't see how well...

I put a 'WebAPI' context property to access my class that makes HTTP requests etc. WebAPI works very well main.qml, but when I try and use it in the included LargeThumbItem.qml I get:

"LargeThumbItem.qml:37: ReferenceError: can't find variable: WebAPI.

How to set a context property that is available for * all * my QML files? What is the best practice for this?

hand. QML

{

...

{ListItemComponent}

type: 'point '.

LargeThumbItem {

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....

}

LargeThumbItem.qml

{

....

WebAPI.getImagePath (...)

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...

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By default of the Jun 02 9000 REVIEWS asset:///main.qml:24 09:12:59.416 com.example.IntervalTimer1.testDev_ervalTimer1a7a2c2e2.427733134: ReferenceError: can't find variable: eventsModel
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Here is my code

import bb.cascades 1.0

NavigationPane {
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';
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' + print(o[p]) + '}';
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.....
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In the PRC

// Default empty project template
#include "applicationui.hpp"

#include 
#include 
#include 
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using namespace bb::cascades;

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: QObject(app)
{
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.....

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Thank you.

The fixed.

You must call setContextProperty before calling createRootObject.

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(Question LVOOP) How one access the data of another class in another class?

Hello-

Ass title suggests, how do I access another class (or is it class?) data from another (different) class? I will attach a picture showing where my problem is...

I was told this:

http://zone.NI.com/reference/en-XX/help/371361H-01/lvhowto/setting_scope_classes/

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I think there could be something simple I'm missing here when it comes LVOOP or OBJECT-oriented programming in general... If any of you are willing to help me, it would be much appreciated!

Thank you!

-pat

Personal data are always private, you can never set public. Unbundle cluster function can be used only on the thread of class when he is in the class. If you need to access private data, you must create accessors.

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Hey gang,

I've been watching some of the other problems autour to access the variables from one page on another page qml qml, and I can't get this to work.

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what I am doing wrong?

When you call the second page, SettingsPage.qml, set it as an object.

Don't do the following:

attachedObjects: [

    ComponentDefinition {
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]

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WebCenter and UCM: 11.1.1.8
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Vyas.

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I don't know if RIDC façade class is the right path to follow because of the entry of the next development team:

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This older technology did not meet code of connection appropriate ADF patterns and does not support MDS for customizations after deployment.

The client should try to avoid using this older connection RIDC management framework code.

Thank you

Srinath

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18:10:17, 336 ERROR [STDERR] at atg.servlet.pipeline.PipelineableServletImpl.passRequest(PipelineableServletImpl.java:157)
18:10:17, 337 ERROR [STDERR] at atg.servlet.pipeline.MimeTyperPipelineServlet.service(MimeTyperPipelineServlet.java:228)
18:10:17, 337 ERROR [STDERR] at atg.servlet.pipeline.PipelineableServletImpl.passRequest(PipelineableServletImpl.java:157)
18:10:17, 337 ERROR [STDERR] at atg.servlet.pipeline.FileFinderPipelineServlet.service(FileFinderPipelineServlet.java:729)
18:10:17, 337 ERROR [STDERR] at atg.servlet.pipeline.PipelineableServletImpl.passRequest(PipelineableServletImpl.java:157)
18:10:17, 337 ERROR [STDERR] at atg.servlet.pipeline.DispatcherPipelineServletImpl.service(DispatcherPipelineServletImpl.java:275)
18:10:17, 337 ERROR [STDERR] at atg.servlet.pipeline.PipelineableServletImpl.passRequest(PipelineableServletImpl.java:157)
18:10:17, 337 ERROR [STDERR] at atg.servlet.pipeline.ServletPathPipelineServlet.service(ServletPathPipelineServlet.java:208)
18:10:17, 337 ERROR [STDERR] at atg.servlet.pipeline.PipelineableServletImpl.passRequest(PipelineableServletImpl.java:157)
18:10:17, 337 ERROR [STDERR] at atg.security.ExpiredPasswordAdminServlet.service(ExpiredPasswordAdminServlet.java:312)
18:10:17, 337 ERROR [STDERR] at atg.servlet.pipeline.PipelineableServletImpl.passRequest(PipelineableServletImpl.java:157)
18:10:17, 337 ERROR [STDERR] at atg.servlet.pipeline.BasicAuthenticationPipelineServlet.service(BasicAuthenticationPipelineServlet.java:513)
18:10:17, 337 ERROR [STDERR] at atg.servlet.pipeline.PipelineableServletImpl.passRequest(PipelineableServletImpl.java:157)
18:10:17, 338 ERROR [STDERR] at atg.servlet.pipeline.DynamoPipelineServlet.service(DynamoPipelineServlet.java:491)
18:10:17, 338 ERROR [STDERR] at atg.servlet.pipeline.PipelineableServletImpl.passRequest(PipelineableServletImpl.java:157)
18:10:17, 338 ERROR [STDERR] at atg.dtm.TransactionPipelineServlet.service(TransactionPipelineServlet.java:249)
18:10:17, 338 ERROR [STDERR] at atg.servlet.pipeline.PipelineableServletImpl.passRequest(PipelineableServletImpl.java:157)
18:10:17, 338 ERROR [STDERR] at atg.servlet.pipeline.HeadPipelineServlet.passRequest(HeadPipelineServlet.java:1271)
18:10:17, 338 ERROR [STDERR] at atg.servlet.pipeline.HeadPipelineServlet.service(HeadPipelineServlet.java:952)
18:10:17, 338 ERROR [STDERR] at atg.servlet.pipeline.PipelineableServletImpl.service(PipelineableServletImpl.java:272)
18:10:17, 338 ERROR [STDERR] at atg.nucleus.servlet.NucleusProxyServlet.service(NucleusProxyServlet.java:237)
18:10:17, 338 ERROR [STDERR] at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
18:10:17, 338 ERROR [STDERR] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
18:10:17, 338 ERROR [STDERR] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
18:10:17, 338 ERROR [STDERR] at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
18:10:17, 338 ERROR [STDERR] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
18:10:17, 339 ERROR [STDERR] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
18:10:17, 339 ERROR [STDERR] at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:235)
18:10:17, 339 ERROR [STDERR] at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
18:10:17, 339 ERROR [STDERR] at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:183)
18:10:17, 339 ERROR [STDERR] at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:95)
18:10:17, 339 ERROR [STDERR] at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.process(SecurityContextEstablishmentValve.java:126)
18:10:17, 339 ERROR [STDERR] at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.invoke(SecurityContextEstablishmentValve.java:70)
18:10:17, 339 ERROR [STDERR] at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
18:10:17, 339 ERROR [STDERR] at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
18:10:17, 339 ERROR [STDERR] at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:158)
18:10:17, 339 ERROR [STDERR] at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
18:10:17, 339 ERROR [STDERR] at org.jboss.web.tomcat.service.request.ActiveRequestResponseCacheValve.internalProcess(ActiveRequestResponseCacheValve.java:74)
18:10:17, 340 ERROR [STDERR] at org.jboss.web.tomcat.service.request.ActiveRequestResponseCacheValve.invoke(ActiveRequestResponseCacheValve.java:47)
18:10:17, 340 ERROR [STDERR] at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:330)
18:10:17, 340 ERROR [STDERR] at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:829)
18:10:17, 340 ERROR [STDERR] at org.apache.coyote.http11.Http11Protocol$ Http11ConnectionHandler.process (Http11Protocol.java:599)
18:10:17, 340 ERROR [STDERR] at org.apache.tomcat.util.net.JIoEndpoint$ Worker.run (JIoEndpoint.java:451)
18:10:17, 340 ERROR [STDERR] at java.lang.Thread.run (unknown Source)
18:10:17, 340 ERROR [PageCompileServlet] page compilation error: index.jhtml: could not load class: _dasadmin_3__UTF_s8._index
atg.servlet.pagecompile.PageCompileException: could not load class: _dasadmin_3__UTF_s8._index
Can you please suggest me to fix this problem.
Thank you and best regards,
Murali

Check which version of the JDK bin directory is in the path as 'javac' would be executed to compile the jhtml pages used in dyn/admin. There is a/atg/dynamo/servlet/pagecompile/ExtendedJhtmlPageProcessor of core component which has a string of compileCommand property whose value is specified as something like "javac - classpath {1} d {2} {0}". In fact, this same chain of command is used to compile pages with jhtml javac. Placeholder for the entrance of this is source file {0}, {1} for classpath and {2} is for the default destination directory, \home\pagebuild. In the first post, you mentioned this error:

18:10:17, 334 ERROR [STDERR] java.lang.UnsupportedClassVersionError: _dasadmin_3__UTF_s8/_index: version unsupported major.minor 51.0

This means that the major version number of your class file for the jhtml compiled of dyn/admin page 51, which means it is compiled with the java compiler JDK7 and so it can work very well with an interpreter of java7 unless you specify the java version of target when compiling as 'javac - target 1.6'. Looks like you have JDK7 and JDK6 on your machine and the JDK7 javac is coming to the system path. You can check the default version in the path by running "javac-version" on the command prompt. Change your path if necessary so that "javac-version" will give you the 1.6 version that you use. Also, make sure that ATGJRE is the version of java-oriented correct in \home\localconfig\dasEnv.bat: .sh

It will be useful.

Access the current instance of request module in a java class in the model
Hi all
I'm trying to implement the custom story types in our application, (ModifiedById), I can read the user name of the security context, but not the username.
I have a view object, say UserInfoVO which contains the logged in users info.
I know, I can create a new instance of the application at the bean module and using security context information, I can go get the user ID.
```
            ApplicationModule am =
                  Configuration.createRootApplicationModule(amDef, config);
                ViewObject vo = am.findViewObject("UserInfoVO1"); // view criteria applied by default
                vo.setNamedWhereClauseParam("bUserName", user); // user from security context
                vo.executeQuery();
```
I'm trying to access the current instance of the Application module in my java class customized, that is used to return the attribute history ModifiedById.
```
//referring the blog

http://jobinesh.blogspot.in/2011/02/creating-custom-history-types.html
```
It is, how do I access the current instance of ApplicationModule in a class as * "HistoryAwareEntityImpl" * located in project template. ?

any help will be appreciated.

Kind regards
Rognard
OK, in this case, you get the transaction of db of the base class object and this object allows you to search the module of the application
```
public final DBTransaction getDBTransaction();
...
DBTransaction:
public ApplicationModule findApplicationModule(java.lang.String amName)
```
or if you get the application root module
```
public ApplicationModule getRootApplicationModule()
```
Timo

To access the classes of CPP in qml.

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