| Own Birt Viewer, Read Param Default [message #66745] |
Thu, 11 August 2005 05:40  |
Eclipse User |
|
|
|
Originally posted by: ksc_puschkin.yahoo.de
Hi there,
I'm trying to write my own BIRT viewer for the web. The main idea is to
read the report parameters and prompt for input before any report is
shown. So I created a sample report with two parameters (not in a
parameter-group) and startet to write a java bean to only read the reports
parameters and der default values (I used mainly the example code from the
BIRT integration example page). But when I display the result I get the
correct parameter name but always a 'none' for the default value although
there is a default value.
Thats the interesting part of my report-design:
<?xml version="1.0" encoding="UTF-8"?>
<!-- Written by Eclipse BIRT 1.0 -->
<report xmlns=" http://www.eclipse.org/birt/2005/design" version="2">
<property name="createdBy">Eclipse BIRT Designer Version 1.0.0 Build
<20050718-0150></property>
<property name="units">in</property>
<list-property name="configVars">
<structure>
<property name="name">Kunden</property>
<property name="value">D%</property>
</structure>
<structure>
<property name="name">Country</property>
<property name="value">F%</property>
</structure>
</list-property>
<parameters>
<scalar-parameter name="Kunden">
<property name="dataType">string</property>
<property name="format">Unformatted</property>
<property name="controlType">text-box</property>
<expression name="defaultValue">'A%'</expression>
</scalar-parameter>
<scalar-parameter name="Country">
<text-property name="displayName">Land</text-property>
<property name="dataType">string</property>
<property name="format">Unformatted</property>
<property name="controlType">text-box</property>
<expression name="defaultValue">'U%'</expression>
</scalar-parameter>
</parameters>
----------------------
And here is the part of my java bean that writes all parameter infos into
an output variable:
public String getParams()
{
EngineConfig config = new EngineConfig( );
config.setEngineHome(" d:/eclipse/plugins/org.eclipse.birt.report.viewer_1.0.0/birt /WEB-INF "
);
ReportEngine engine = new ReportEngine( config );
IReportRunnable report = null;
try
{
report = engine.openReportDesign( file );
}
catch ( EngineException e ) //Fehler auffangen
{
error=( "Report " + file + " not found!\n" );
engine.destroy( );
return error;
}
//Here starts the part to get the parameter infos
IGetParameterDefinitionTask task =
engine.createGetParameterDefinitionTask( report );
Collection params = task.getParameterDefns( true );
if ( params.isEmpty() )
{
output=output+( "This report has no parameters.\n" );
}
Iterator iter = params.iterator( );
while ( iter.hasNext( ) )
{
IParameterDefnBase defn = (IParameterDefnBase) iter.next( );
IScalarParameterDefn param = (IScalarParameterDefn) defn;
output=output+ "<br>Parameter: " + param.getName( );
output=output+ "<br>Display Name: " + param.getDisplayName( ) ;
output=output+ "<br>Type: " + param.getDataType( ) ;
output=output+ "<br>Default Value: ";
// The default value is an expression. Evaluate it.
// Maybe here is an error?
Object value = task.getDefaultValue( param );
if (value == null)
{
value = "none";
}
else
{
value=value.toString( );
}
output=output+value;
}
---------------------
And ich get the following output:
Parameter: Kunden
Display Name: null
Type: 1
Default Value: none <---- SHOULD NOT BE 'none'!
Parameter: Country
Display Name: Land
Type: 1
Default Value: none <---- SHOULD NOT BE 'none'!
----------------------
I hope someone could help me. Thanks in advance.
Robert
|
|
|
|
|
|
|
|
Powered by
FUDForum. Page generated in 0.03510 seconds
Home