birt 报表 api 使用

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Eclipse JDBC Web

第一步，初始化ReportDesignHandle和ElementFactory的对象，前者代表生成的report design；后者用来创建所用到的报表元素。

IDesignEngine designEngine = new DesignEngine( new DesignConfig( ) );
ReportDesignHandle reportDesignHandle = designEngine.newSessionHandle(
ULocale.ENGLISH ).createDesign( );
ElementFactory elementFactory = new ElementFactory( reportDesignHandle
.getModule( ) );

第二步，创建Parameter。

ScalarParameterHandle scalarParameterHandle = elementFactory
.newScalarParameter( "param" );
scalarParameterHandle.setIsRequired( false );
scalarParameterHandle.setDefaultValue( "Australia" );
reportDesignHandle.getParameters( ).add( scalarParameterHandle );

第三步，创建Data Source。

OdaDataSourceHandle dataSourceHandle = elementFactory.newOdaDataSource(
"data source",
"org.eclipse.birt.report.data.oda.jdbc" );
dataSourceHandle.setProperty(
"odaDriverClass",
"org.eclipse.birt.report.data.oda.sampledb.Driver" );
dataSourceHandle.setProperty( "odaURL", "jdbc:classicmodels:sampledb" );
dataSourceHandle.setProperty( "odaUser", "ClassicModels" );
// dataSourceHandle.setProperty( "odaPassword", "ClassicModels" );
reportDesignHandle.getDataSources( ).add( dataSourceHandle );

第四步，创建Data Set。

OdaDataSetHandle dataSetHandle = elementFactory.newOdaDataSet(
"data set",
"org.eclipse.birt.report.data.oda.jdbc.JdbcSelectDataSet" );
dataSetHandle.setDataSource( dataSourceHandle.getName( ) );
dataSetHandle.setQueryText( "select * from CLASSICMODELS.CUSTOMERS" );
FilterCondition filterCondition = StructureFactory.createFilterCond( );
filterCondition.setOperator( DesignChoiceConstants.FILTER_OPERATOR_EQ );
filterCondition.setExpr( "row[\"COUNTRY\"]" );
filterCondition.setValue1( "params[\""
+ scalarParameterHandle.getName( ) + "\"].value" );
dataSetHandle.addFilter( filterCondition );
reportDesignHandle.getDataSets( ).add( dataSetHandle );

第五步，创建Sytle。

SharedStyleHandle sharedStyleHandle = elementFactory.newStyle( null );
ColorHandle colorHandle = sharedStyleHandle.getColor( );
colorHandle.setStringValue( "red" );
reportDesignHandle.getStyles( ).add( sharedStyleHandle );

第六步，创建Table。

TableHandle tableHandle = elementFactory.newTableItem(
"table",
3,
1,
1,
1 );

tableHandle.setProperty(
StyleHandle.BORDER_TOP_STYLE_PROP,
DesignChoiceConstants.LINE_STYLE_SOLID );
tableHandle.setProperty(
StyleHandle.BORDER_LEFT_STYLE_PROP,
DesignChoiceConstants.LINE_STYLE_SOLID );
tableHandle.setProperty(
StyleHandle.BORDER_BOTTOM_STYLE_PROP,
DesignChoiceConstants.LINE_STYLE_SOLID );
tableHandle.setProperty(
StyleHandle.BORDER_RIGHT_STYLE_PROP,
DesignChoiceConstants.LINE_STYLE_SOLID );

tableHandle.setDataSet( dataSetHandle );

ComputedColumn computedColumn1 = StructureFactory
.createComputedColumn( );
computedColumn1.setName( "CustomerNumber" );
computedColumn1.setDisplayName( "CustomerNumber" );
computedColumn1.setDataType(
DesignChoiceConstants.COLUMN_DATA_TYPE_INTEGER );
computedColumn1.setExpression( "dataSetRow[\"CUSTOMERNUMBER\"]" );
tableHandle.addColumnBinding( computedColumn1, false );

ComputedColumn computedColumn2 = StructureFactory
.createComputedColumn( );
computedColumn2.setName( "CustomerName" );
computedColumn2.setDisplayName( "CustomerName" );
computedColumn2.setDataType(
DesignChoiceConstants.COLUMN_DATA_TYPE_STRING );
computedColumn2.setExpression( "dataSetRow[\"CUSTOMERNAME\"]" );
tableHandle.addColumnBinding( computedColumn2, false );

ComputedColumn computedColumn3 = StructureFactory
.createComputedColumn( );
computedColumn3.setName( "Country" );
computedColumn3.setDisplayName( "Country" );
computedColumn3.setDataType(
DesignChoiceConstants.COLUMN_DATA_TYPE_STRING );
computedColumn3.setExpression( "dataSetRow[\"COUNTRY\"]" );
tableHandle.addColumnBinding( computedColumn3, false );

ComputedColumn computedColumn4 = StructureFactory
.createComputedColumn( );
computedColumn4.setName( "Total Count" );
computedColumn4.setDisplayName( "Total Count" );
computedColumn4.setAggregateFunction( "COUNT" );
computedColumn4.setDataType(
DesignChoiceConstants.COLUMN_DATA_TYPE_INTEGER );
computedColumn4.setExpression( "row[\"CustomerNumber\"]" );
tableHandle.addColumnBinding( computedColumn4, false );

RowHandle headerRowHandle = (RowHandle) tableHandle
.getHeader( )
.get( 0 );

headerRowHandle.setProperty(
StyleHandle.TEXT_ALIGN_PROP,
DesignChoiceConstants.TEXT_ALIGN_LEFT );

CellHandle headerCellHandle1 = (CellHandle) headerRowHandle
.getCells( )
.get( 0 );
LabelHandle labelHandle1 = elementFactory.newLabel( "CustomerNumber" );
labelHandle1.setText( "CustomerNumber" );
headerCellHandle1.getContent( ).add( labelHandle1 );

CellHandle headerCellHandle2 = (CellHandle) headerRowHandle
.getCells( )
.get( 1 );
LabelHandle labelHandle2 = elementFactory.newLabel( "CustomerName" );
labelHandle2.setText( "CustomerName" );
headerCellHandle2.getContent( ).add( labelHandle2 );

CellHandle headerCellHandle3 = (CellHandle) headerRowHandle
.getCells( )
.get( 2 );
LabelHandle labelHandle3 = elementFactory.newLabel( "Country" );
labelHandle3.setText( "Country" );
headerCellHandle3.getContent( ).add( labelHandle3 );

RowHandle detailRowHandle = (RowHandle) tableHandle
.getDetail( )
.get( 0 );

CellHandle detailCellHandle1 = (CellHandle) detailRowHandle
.getCells( )
.get( 0 );
DataItemHandle dataItemHandle1 = elementFactory
.newDataItem( "CustomerNumber" );
dataItemHandle1.setResultSetColumn( computedColumn1.getName( ) );
detailCellHandle1.getContent( ).add( dataItemHandle1 );

CellHandle detailCellHandle2 = (CellHandle) detailRowHandle
.getCells( )
.get( 1 );
DataItemHandle dataItemHandle2 = elementFactory
.newDataItem( "CustomerName" );
dataItemHandle2.setResultSetColumn( computedColumn2.getName( ) );
detailCellHandle2.getContent( ).add( dataItemHandle2 );

CellHandle detailCellHandle3 = (CellHandle) detailRowHandle
.getCells( )
.get( 2 );
DataItemHandle dataItemHandle3 =
elementFactory.newDataItem( "Country" );
dataItemHandle3.setResultSetColumn( computedColumn3.getName( ) );
detailCellHandle3.getContent( ).add( dataItemHandle3 );

RowHandle footerRowHandle = (RowHandle) tableHandle
.getFooter( )
.get( 0 );

CellHandle footerCellHandle1 = (CellHandle) footerRowHandle
.getCells( )
.get( 0 );
LabelHandle labelHandle4 = elementFactory.newLabel( "Total Count" );
labelHandle4.setText( "Total Count" );
footerCellHandle1.getContent( ).add( labelHandle4 );

CellHandle footerCellHandle2 = (CellHandle) footerRowHandle
.getCells( )
.get( 1 );
DataItemHandle dataItemHandle4 = elementFactory
.newDataItem( "Total Count" );
dataItemHandle4.setResultSetColumn( computedColumn4.getName( ) );
footerCellHandle2.getContent( ).add( dataItemHandle4 );

tableHandle.setStyle( sharedStyleHandle );

reportDesignHandle.getBody( ).add( tableHandle );

第七步，输出report design。

ModuleHandle moduleHandle = reportDesignHandle.getModuleHandle( );
moduleHandle.saveAs( getOutputFolder( ) + File.separator + report );
reportDesignHandle.close( );

在Web Viewer中预览生成的报表应该可以得到这样的输出：

CustomerNumber	CustomerName	Country
114	Australian Collectors, Co.	Australia
276	Anna's Decorations, Ltd	Australia
282	Souveniers And Things Co.	Australia
333	Australian Gift Network, Co	Australia
471	Australian Collectables, Ltd	Australia
Total Count	5