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Changing the &XML Data Source File dynamically [message #652350]

Thu, 03 February 2011 11:17

Eclipse User

I have an XML datasource. In the advanced tab of the datasource's property editor I can see
ODA Data Source
&XML Data Source File

which has the value I specified when I created the datasource.

I would like to be able to set this value from a parameter that I pass in. Ideally I would also like to set the default value of the parameter to what ever the current value is.

I am assuming that the hook should be placed in the "beforeOpen" of the datasource but I don't know the syntax for referencing/setting this field.

Re: Changing the &XML Data Source File dynamically [message #652353 is a reply to message #652350]

Thu, 03 February 2011 11:23

Eclipse User

On further thought, I'm not sure how this can work as parameters are obviously processed after the datasource is opened since the default values for some of these parameters are taken from the data.

So is it even possible to provide the name of the datasource in the Report Parameters?

Re: Changing the &XML Data Source File dynamically [message #652387 is a reply to message #652353]

Thu, 03 February 2011 12:33

Eclipse User

Mike,

You can set any datasource property in the beforeOpen like:
extensionProperties.odaURL = "jdbc:mysql://localhost/mysql";
where odaURL is the property you are interested in changing.
You can use the xml view if you are not sure what the property name is.

But if the datasource is already opened like for the parameter this
approach will not work.

Jason

On 2/3/2011 11:23 AM, Mike Wulkan wrote:
> On further thought, I'm not sure how this can work as parameters are
> obviously processed after the datasource is opened since the default
> values for some of these parameters are taken from the data.
>
> So is it even possible to provide the name of the datasource in the
> Report Parameters?

Re: Changing the &XML Data Source File dynamically [message #918302 is a reply to message #652350]

Thu, 20 September 2012 19:15

Eclipse User

Jason,

I wish to do something similar in that I am using an EMF ODA data source and I want to set the Ecore file name and path before running the report using the integrated Java approach. Is it possible to set the data source property from Java on a ReportEngine or RunAndRenderTask option somehow?

Thanks for your time,
Randy

Re: Changing the &XML Data Source File dynamically [message #919043 is a reply to message #918302]

Fri, 21 September 2012 12:20

Eclipse User

Sure. There are several ways this can be done. One way is to add a parameter for the property. Then the property binding expression for the property set it to params["yourparam"].value or use a beforeOpen script like:
this.property = params["yourparam"].value; Then in the run and render task just make sure to set the parameter value like task.setParameterValue("yourparam", "youpropertyvalue"); If you do not want to use a parameter put the value in the appcontext like task.getAppContext().put("yourpropname", "yourpropvalue" ); then in the beforeOpen script use this.property =reportContext.getAppContext().get("yourpropname");

Jason

Re: Changing the &XML Data Source File dynamically [message #919054 is a reply to message #919043]

Fri, 21 September 2012 12:37

Eclipse User

Jason,

That will allow me to choose the data source from within Java (if the Data Source already exists)? Sweet! I am not sure if I was clear what I needed or not (LOL sounds too easy).

What is "property"? Do I need to specify another property name, or a generic "property" will work? I am a bit new to properties and parameters. Although I have been reading about parameters.

Thanks for your help!
Randy

[Updated on: Fri, 21 September 2012 12:39] by Moderator

Re: Changing the &XML Data Source File dynamically [message #919099 is a reply to message #919054]

Fri, 21 September 2012 13:24

Eclipse User

You can look at the xml view of the report and find the property of the data source/set you want to change. It will have a name like odaURL. This is the property I mean. You will see all the settable properties in the property binding toc entry when you open the data set/source in the designer. You can use code like:
this.setProperty("propertyname", "propertyvalue); if the property does not have a native setter method in the beforeOpen script.

Jason

Re: Changing the &XML Data Source File dynamically [message #919338 is a reply to message #919099]

Fri, 21 September 2012 19:03

Eclipse User

Jason,

Would this work too (on the report side)?

path = reportContext.getAppContext().get( "myParameter" );
this.getDataSource( "Data Source" ).setPrivateDriverProperty( "HOME", path );

If I set myParameter in the appContext in Java, and HOME is the property of the Data Source? They had it in the beforeFactory section.

I am just looking around at DevShare in birt-exchange because I am stuck on EMF ODA queryText problem.

I got it from: http: //www.spudsoft.co.uk/2011/10/lsned43-how-to-have-relative-path-in-a-flat-file-data-source-in-birt/

Thanks,
Randy

[Updated on: Fri, 21 September 2012 19:10] by Moderator

Re: Changing the &XML Data Source File dynamically [message #922167 is a reply to message #919338]

Mon, 24 September 2012 16:05

Eclipse User

That should work. You could also try:

reportContext.getDesignHandle().findDataSource("data source").setProperty("propertyname", value);

Jason

Re: Changing the &XML Data Source File dynamically [message #924469 is a reply to message #922167]

Wed, 26 September 2012 17:59

Eclipse User

Jason,

I tried the following, thinking that reportContext was my reportDesign:

// create engine configuration, start engine and platform
EngineConfig config = new EngineConfig();
config.setLogConfig(null, Level.ALL);

Platform.startup();
ReportEngine engine = new ReportEngine(config);

// open the report design and create a new run task
IReportRunnable reportDesign = engine.openReportDesign(designFile);
//reportDesign.getDesignHandle().findDataSource("data source").setProperty("propertyname", value);
IRunAndRenderTask runTask = engine.createRunAndRenderTask(reportDesign);

But it doesn't compile that way.

Any ideas?

Thanks again,
Randy

Re: Changing the &XML Data Source File dynamically [message #924520 is a reply to message #924469]

Wed, 26 September 2012 19:17

Eclipse User

Jason,

I made a mistake in the last example. I realize now that that is JavaScript. I tried setting the dataSource parameter in Java, and using this JavaScript in the beforeOpen of the Data Source:

path = reportContext.getAppContext().get("dataSource");
reportContext.getDesignHandle().findDataSource("ExampleEcore").setProperty("resource", path);

Which didn't seem to pass the parameter through to Data Source.

I'll work on it.

Thanks,
Randy

Re: Changing the &XML Data Source File dynamically [message #925383 is a reply to message #924520]

Thu, 27 September 2012 13:09

Eclipse User

If you put this in your JavaScript for the report:
path = reportContext.getAppContext().get("dataSource");
reportContext.getDesignHandle().findDataSource("ExampleEcore").setProperty("resource", path);

in Java you should be putting dataSource in like:
runTask.getAppContext().put("dataSource", "yourdatasource");

Jason

Re: Changing the &XML Data Source File dynamically [message #933173 is a reply to message #925383]

Thu, 04 October 2012 16:05

Eclipse User

I had to put it in the beforeFactory to get it working. But, it does work!!!

Randy

Re: Changing the &XML Data Source File dynamically [message #934152 is a reply to message #933173]

Fri, 05 October 2012 14:02

Eclipse User

What error are you getting? In the beforeFactory add something like the following:

var tst = reportContext.getDesignHandle().findDataSource("ExampleEcore").getProperty("resource");
var path = reportContext.getAppContext().get("dataSource");
importPackage( Packages.java.io );
out = new PrintWriter( new FileWriter( "c:/temp/debugreport.txt", true ) );
out.println( "Prop " + tst + "-- appcontext value " + path);
out.close();

Jason

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