<p>Hi,</p><p> </p><p>I have this Java class (in a regluar Java Project, and added all birt runtime jar's) I took from another website as an exemple. It works, and print on console all parameters attributes, including default value.</p><p> </p><p>My main goal is to get parameters actual values when the report is running (eg if a user change a parameter value, I need to know the new value it in my Java application).</p><p> </p><p>I looked everywhere with no luck, so I am asking for help with the Java code, as well as any reference that could help me.</p><p> </p><p>Many thanks in advance for your help</p><pre class="_prettyXprint _linenums:1">import java.io.Serializable;import java.util.Collection;import java.util.Collections;import java.util.HashMap;import java.util.Iterator;import java.util.Map;import java.util.logging.Level;import org.eclipse.birt.core.framework.Platform;import org.eclipse.birt.report.engine.api.EngineConfig;import org.eclipse.birt.report.engine.api.EngineException;import org.eclipse.birt.report.engine.api.IGetParameterDefinitionTask;import org.eclipse.birt.report.engine.api.IParameterDefnBase;import org.eclipse.birt.report.engine.api.IParameterGroupDefn;import org.eclipse.birt.report.engine.api.IParameterSelectionChoice;import org.eclipse.birt.report.engine.api.IReportEngine;import org.eclipse.birt.report.engine.api.IReportEngineFactory;import org.eclipse.birt.report.engine.api.IReportRunnable;import org.eclipse.birt.report.engine.api.IScalarParameterDefn;import org.eclipse.birt.report.model.api.CascadingParameterGroupHandle;import org.eclipse.birt.report.model.api.ReportDesignHandle;import org.eclipse.birt.report.model.api.ScalarParameterHandle;public class ParametersTask {static void executeReport() throws EngineException{ HashMap<String, HashMap<String, Serializable>> parmDetails = new HashMap<String, HashMap<String, Serializable>>(); IReportEngine engine=null; EngineConfig config = null; try{ config = new EngineConfig( ); config.setEngineHome( "C:/birt-runtime-4_3_2/ReportEngine/lib" ); config.setLogConfig(null, Level.FINE); Platform.startup( config ); IReportEngineFactory factory = (IReportEngineFactory) Platform .createFactoryObject( IReportEngineFactory.EXTENSION_REPORT_ENGINE_FACTORY ); engine = factory.createReportEngine( config ); engine.changeLogLevel( Level.WARNING ); }catch( Exception ex){ ex.printStackTrace(); } IReportRunnable design = null; //Open a report design design = engine.openReportDesign("C:/test/2.1/parameters/Parameters.rptdesign"); //Create Parameter Definition Task and retrieve parameter definitions IGetParameterDefinitionTask task = engine.createGetParameterDefinitionTask( design ); Collection<IParameterDefnBase> params = (Collection<IParameterDefnBase>)task.getParameterDefns( true ); //Iterate over each parameter for ( IParameterDefnBase param : params ) { if ( param instanceof IParameterGroupDefn ) { IParameterGroupDefn group = (IParameterGroupDefn) param; //System.out.println( "Parameter Group: " + group.getName( ) ); // Do something with the parameter group. // Iterate over group contents. for ( Iterator i2 = group.getContents( ).iterator( ); i2.hasNext( ); ) { IScalarParameterDefn scalar = (IScalarParameterDefn) i2.next( ); //System.out.println("t" + scalar.getName()); //Get details on the parameter parmDetails.put( scalar.getName(), loadParameterDetails( task, scalar, design, group)); } } else { IScalarParameterDefn scalar = (IScalarParameterDefn) param; //System.out.println(param.getName()); //get details on the parameter parmDetails.put( scalar.getName(),loadParameterDetails( task, scalar, design, null)); } } //Destroy the engine and shutdown the Platform //Note - If the program stays resident do not shutdown the Platform or the Engine engine.shutdown(); Platform.shutdown(); System.out.println("Finished");} //Function to load parameter details in a map.private static HashMap<String, Serializable> loadParameterDetails(IGetParameterDefinitionTask task, IScalarParameterDefn scalar, IReportRunnable report, IParameterGroupDefn group){ HashMap<String, Serializable> parameter = new HashMap<String, Serializable>(); parameter.put("Parameter Group", group == null ? "Default" : group.getName()); parameter.put("Name", scalar.getName()); parameter.put("Help Text", scalar.getHelpText()); parameter.put("Display Name", scalar.getDisplayName()); //this is a format code such as > for UPPERCASE parameter.put("Display Format", scalar.getDisplayFormat()); parameter.put("Hidden", scalar.isHidden() ? "Yes" : "No"); parameter.put("Allow Blank", scalar.allowBlank() ? "Yes" : "No"); parameter.put("Allow Null", scalar.allowNull() ? "Yes" : "No"); parameter.put("Conceal Entry", scalar.isValueConcealed() ? "Yes" : "No"); //ie passwords etc switch (scalar.getControlType()) { case IScalarParameterDefn.TEXT_BOX: parameter.put("Type", "Text Box"); break; case IScalarParameterDefn.LIST_BOX: parameter.put("Type", "List Box"); break; case IScalarParameterDefn.RADIO_BUTTON: parameter.put("Type", "List Box"); break; case IScalarParameterDefn.CHECK_BOX: parameter.put("Type", "List Box"); break; default: parameter.put("Type", "Text Box");break; } switch (scalar.getDataType()) { case IScalarParameterDefn.TYPE_STRING: parameter.put("Data Type", "String"); break; case IScalarParameterDefn.TYPE_FLOAT: parameter.put("Data Type", "Float"); break; case IScalarParameterDefn.TYPE_DECIMAL: parameter.put("Data Type", "Decimal"); break; case IScalarParameterDefn.TYPE_DATE_TIME: parameter.put("Data Type", "Date Time"); break; case IScalarParameterDefn.TYPE_BOOLEAN: parameter.put("Data Type", "Boolean"); break; default: parameter.put("Data Type", "Any"); break; } //Get report design and find default value, prompt text and data set expression using the DE API ReportDesignHandle reportHandle = ( ReportDesignHandle ) report.getDesignHandle( ); ScalarParameterHandle parameterHandle = ( ScalarParameterHandle ) reportHandle.findParameter( scalar.getName() ); parameter.put("Default Value", parameterHandle.getDefaultValue()); parameter.put("Prompt Text", parameterHandle.getPromptText()); parameter.put("Data Set Expression", parameterHandle.getValueExpr()); if(scalar.getControlType() != IScalarParameterDefn.TEXT_BOX) { //retrieve selection list for cascaded parameter if ( parameterHandle.getContainer( ) instanceof CascadingParameterGroupHandle ){ if ( parameterHandle.getContainer( ) instanceof CascadingParameterGroupHandle ) { int index = parameterHandle.getContainerSlotHandle( ).findPosn( parameterHandle ); Object[] keyValue = new Object[index]; for ( int i = 0; i < index; i++ ) { ScalarParameterHandle handle = (ScalarParameterHandle) ( (CascadingParameterGroupHandle) parameterHandle.getContainer( ) ).getParameters( ).get( i ); //Use parameter default values keyValue[i] = handle.getDefaultValue(); } String groupName = parameterHandle.getContainer( ).getName( ); task.evaluateQuery( groupName ); Collection<IParameterSelectionChoice> sList = (Collection<IParameterSelectionChoice>)task.getSelectionListForCascadingGroup( groupName, keyValue ); HashMap<Object, String> dynamicList = new HashMap<Object, String>(); for ( IParameterSelectionChoice sI : sList ) { Object value = sI.getValue( ); Object label = sI.getLabel( ); System.out.println( label + "--" + value); dynamicList.put(value,(String) label); } parameter.put("Selection List", dynamicList); } }else{ //retrieve selection list Collection<IParameterSelectionChoice> selectionList = (Collection<IParameterSelectionChoice>)task.getSelectionList( scalar.getName() ); if ( selectionList != null ) { HashMap<Object, String> dynamicList = new HashMap<Object, String>(); for ( IParameterSelectionChoice selectionItem : selectionList ) { Object value = selectionItem.getValue( ); String label = selectionItem.getLabel( ); //System.out.println( label + "--" + value); dynamicList.put(value,label); } parameter.put("Selection List", dynamicList); } } } //Print out results System.out.println("======================Parameter =" + scalar.getName()); for (Map.Entry<String, Serializable> entry : parameter.entrySet( )) { String name = entry.getKey(); if( name.equals("Selection List")){ HashMap<?,?> selList = (HashMap<?,?>)entry.getValue(); for (Map.Entry<?,?> entry1 : selList.entrySet()) { System.out.println( "Selection List Entry ===== Key = " + entry1.getKey() + " Value = " + entry1.getValue()); } }else{ System.out.println( name + " = " + entry.getValue()); } } return parameter;}/** *
@param args */public static void main(String[] args) { try { executeReport( ); } catch ( Exception e ) { e.printStackTrace(); }}}</pre>
