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| Re: Bind existing data to dataset [message #653224 is a reply to message #653027] |
Tue, 08 February 2011 21:25   |
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If you get the TableHandle call the the getTableBindings and add
computed columns to it using StructureFactory.createComputedColumn();.
Look at the attached example.
Jason
package DEAPI;
import java.io.IOException;
import java.util.ArrayList;
import org.eclipse.birt.core.framework.Platform;
import org.eclipse.birt.report.model.api.CellHandle;
import org.eclipse.birt.report.model.api.DataItemHandle;
import org.eclipse.birt.report.model.api.DesignConfig;
import org.eclipse.birt.report.model.api.ElementFactory;
import org.eclipse.birt.report.model.api.IDesignEngine;
import org.eclipse.birt.report.model.api.IDesignEngineFactory;
import org.eclipse.birt.report.model.api.LabelHandle;
import org.eclipse.birt.report.model.api.OdaDataSetHandle;
import org.eclipse.birt.report.model.api.OdaDataSourceHandle;
import org.eclipse.birt.report.model.api.PropertyHandle;
import org.eclipse.birt.report.model.api.ReportDesignHandle;
import org.eclipse.birt.report.model.api.RowHandle;
import org.eclipse.birt.report.model.api.SessionHandle;
import org.eclipse.birt.report.model.api.StructureFactory;
import org.eclipse.birt.report.model.api.TableHandle;
import org.eclipse.birt.report.model.api.activity.SemanticException ;
import org.eclipse.birt.report.model.api.elements.structures.Comput edColumn;
import com.ibm.icu.util.ULocale;
/**
* Simple BIRT Design Engine API (DEAPI) demo.
*/
public class DECreateDynamicTable
{
ReportDesignHandle designHandle = null;
ElementFactory designFactory = null;
StructureFactory structFactory = null;
public static void main( String[] args )
{
try
{
DECreateDynamicTable de = new DECreateDynamicTable();
ArrayList al = new ArrayList();
al.add("OFFICECODE");
al.add("CITY");
al.add("COUNTRY");
de.buildReport(al, "From Offices" );
}
catch ( IOException e )
{
// TODO Auto-generated catch block
e.printStackTrace();
}
catch ( SemanticException e )
{
// TODO Auto-generated catch block
e.printStackTrace();
}
}
void buildDataSource( ) throws SemanticException
{
OdaDataSourceHandle dsHandle = designFactory.newOdaDataSource(
"Data Source", "org.eclipse.birt.report.data.oda.jdbc" );
dsHandle.setProperty( "odaDriverClass",
"org.eclipse.birt.report.data.oda.sampledb.Driver" );
dsHandle.setProperty( "odaURL", "jdbc:classicmodels:sampledb" );
dsHandle.setProperty( "odaUser", "ClassicModels" );
dsHandle.setProperty( "odaPassword", "" );
designHandle.getDataSources( ).add( dsHandle );
}
void buildDataSet(ArrayList cols, String fromClause ) throws
SemanticException
{
OdaDataSetHandle dsHandle = designFactory.newOdaDataSet( "ds",
"org.eclipse.birt.report.data.oda.jdbc.JdbcSelectDataSet" );
dsHandle.setDataSource( "Data Source" );
String qry = "Select ";
for( int i=0; i < cols.size(); i++){
qry += " " + cols.get(i);
if( i != (cols.size() -1) ){
qry += ",";
}
}
qry += " " + fromClause;
dsHandle.setQueryText( qry );
designHandle.getDataSets( ).add( dsHandle );
}
void buildReport(ArrayList cols, String fromClause ) throws
IOException, SemanticException
{
DesignConfig config = new DesignConfig( );
config.setBIRTHome("C:/birt/birt-runtime-2_5_1/birt-runtime-2_5_1/ReportEngine ");
IDesignEngine engine = null;
try{
Platform.startup( config );
IDesignEngineFactory factory = (IDesignEngineFactory) Platform
.createFactoryObject(
IDesignEngineFactory.EXTENSION_DESIGN_ENGINE_FACTORY );
engine = factory.createDesignEngine( config );
}catch( Exception ex){
ex.printStackTrace();
}
SessionHandle session = engine.newSessionHandle( ULocale.ENGLISH ) ;
try{
//open a design or a template
designHandle = session.createDesign();
designFactory = designHandle.getElementFactory( );
buildDataSource();
buildDataSet(cols, fromClause);
TableHandle table = designFactory.newTableItem( "table", cols.size() );
table.setWidth( "100%" );
table.setDataSet( designHandle.findDataSet( "ds" ) );
PropertyHandle computedSet = table.getColumnBindings( );
ComputedColumn cs1 = null;
for( int i=0; i < cols.size(); i++){
cs1 = StructureFactory.createComputedColumn();
cs1.setName((String)cols.get(i));
cs1.setExpression("dataSetRow[\"" + (String)cols.get(i) + "\"]");
computedSet.addItem(cs1);
}
// table header
RowHandle tableheader = (RowHandle) table.getHeader( ).get( 0 );
for( int i=0; i < cols.size(); i++){
LabelHandle label1 = designFactory.newLabel( (String)cols.get(i) );
label1.setText((String)cols.get(i));
CellHandle cell = (CellHandle) tableheader.getCells( ).get( i );
cell.getContent( ).add( label1 );
}
// table detail
RowHandle tabledetail = (RowHandle) table.getDetail( ).get( 0 );
for( int i=0; i < cols.size(); i++){
CellHandle cell = (CellHandle) tabledetail.getCells( ).get( i );
DataItemHandle data = designFactory.newDataItem(
"data_"+(String)cols.get(i) );
data.setResultSetColumn( (String)cols.get(i));
cell.getContent( ).add( data );
}
designHandle.getBody( ).add( table );
// Save the design and close it.
designHandle.saveAs( "output/desample/dynamic.rptdesign" ); //$NON-NLS-1$
designHandle.close( );
Platform.shutdown();
System.out.println("Finished");
}catch (Exception e){
e.printStackTrace();
}
}
}
On 2/7/2011 10:56 PM, cassandra wrote:
> Hi,
>
> I'm currently working on extracting .rptdesign file using java. My
> problem is some of the data which isn't binded to the dataset of its
> table cannot display its value expression. Only data which is binded to
> its table can display the value expression. I tried to set the data
> item's dataset but it seems like it reset all the info of the data.
>
> This problem has driven me crazy because this is a rare case in google.
> Can anyone please help me on how to bind the existing data to its
> table's dataset, in order to display the value expression? Thanks!
>
> Cass
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| Re: Bind existing data to dataset [message #653249 is a reply to message #653224] |
Wed, 09 February 2011 02:28 |
 cassandra 
Messages: 4
Registered: February 2011 |
Junior Member |
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Hi Jason,
Thanks for your quick reply and the example.
My case is a bit different because my code reads all the .rpt files that have been created long time ago.. They include all the value expressions, name and data type. So, i only need to bind the individual data to its table or table's dataset without losing its original data.
Is it possible to do it in way?
Cass
[Updated on: Wed, 09 February 2011 02:28] Report message to a moderator |
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| Re: Bind existing data to dataset [message #653439 is a reply to message #653249] |
Wed, 09 February 2011 18:33 |
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Cass,
I am a little confused. In these reports is the binding missing?
Jason
On 2/8/2011 9:28 PM, cassandra wrote:
> Hi Jason,
>
> Thanks for your quick reply and the example.
>
> My case is a bit different because my code reads all the .rpt files that
> have been created long time ago.. They include all the value
> expressions, name and data type. So, i only need to bind the individual
> data to its table or table's dataset.
>
> Is it possible to do it in way?
>
> Cass
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