Package net.sf.jasperreports.fastexcel

Class FastExcelDataSource

java.lang.Object

net.sf.jasperreports.engine.data.JRAbstractTextDataSource

net.sf.jasperreports.engine.data.AbstractXlsDataSource

net.sf.jasperreports.fastexcel.FastExcelDataSource

All Implemented Interfaces:

JRDataSource, JRRewindableDataSource

public class FastExcelDataSource
extends AbstractXlsDataSource

This data source implementation reads an XLSX stream.

The default naming convention is to name report fields COLUMN_x and map each column with the field found at index x in each row (these indices start with 0). To avoid this situation, users can either specify a collection of column names or set a flag to read the column names from the first row of the XLSX file.

Author:

Teodor Danciu (teodord@users.sourceforge.net)

Field Summary

Fields inherited from class net.sf.jasperreports.engine.data.AbstractXlsDataSource

columnIndexMap, columnNames, dateFormat, EXCEPTION_MESSAGE_KEY_XLS_COLUMN_NAMES_MISMATCH_COLUMN_INDEXES, EXCEPTION_MESSAGE_KEY_XLS_FIELD_VALUE_NOT_RETRIEVED, EXCEPTION_MESSAGE_KEY_XLS_SHEET_INDEX_OUT_OF_RANGE, EXCEPTION_MESSAGE_KEY_XLS_SHEET_NOT_FOUND, INDEXED_COLUMN_PREFIX, numberFormat, PROPERTY_FIELD_COLUMN_INDEX, PROPERTY_FIELD_COLUMN_NAME, sheetSelection, useFirstRowAsHeader

Fields inherited from class net.sf.jasperreports.engine.data.JRAbstractTextDataSource

EXCEPTION_MESSAGE_KEY_CANNOT_CONVERT_FIELD_TYPE, EXCEPTION_MESSAGE_KEY_CANNOT_MODIFY_PROPERTIES_AFTER_START, EXCEPTION_MESSAGE_KEY_NODE_NOT_AVAILABLE, EXCEPTION_MESSAGE_KEY_NULL_DOCUMENT, EXCEPTION_MESSAGE_KEY_NULL_SELECT_EXPRESSION, EXCEPTION_MESSAGE_KEY_UNKNOWN_COLUMN_NAME, EXCEPTION_MESSAGE_KEY_UNKNOWN_NUMBER_TYPE

Constructor Summary

Constructors

Constructor	Description
FastExcelDataSource(File file)	Creates a data source instance from an XLSX or XLS file.
FastExcelDataSource(InputStream is)	Creates a data source instance from an XLSX or XLS data input stream.
FastExcelDataSource(InputStream is, boolean closeInputStream)	Creates a data source instance from an XLSX or XLS data input stream.
FastExcelDataSource(String location)
FastExcelDataSource(JasperReportsContext jasperReportsContext, String location)	Creates a data source instance that reads XLSX or XLS data from a given location.
FastExcelDataSource(RepositoryContext context, String location)
FastExcelDataSource(org.dhatim.fastexcel.reader.ReadableWorkbook workbook)	Creates a data source instance from a workbook.

Method Summary

Modifier and Type	Method	Description
protected void	checkReadStarted()
void	close()	Closes the reader.
String	getFieldFormatPattern(JRField jrField)
Object	getFieldValue(JRField jrField)	Gets the field value for the current position.
String	getStringFieldValue(JRField jrField)
protected org.dhatim.fastexcel.reader.ReadableWorkbook	loadWorkbook(InputStream is)
void	moveFirst()	Moves back to the first element in the data source.
boolean	next()	Tries to position the cursor on the next element in the data source.

Methods inherited from class net.sf.jasperreports.engine.data.AbstractXlsDataSource

getColumnIndex, getColumnNames, getDateFormat, getNumberFormat, getSheetSelection, setColumnIndexes, setColumnNames, setColumnNames, setDateFormat, setNumberFormat, setSheetSelection, setUseFirstRowAsHeader

Methods inherited from class net.sf.jasperreports.engine.data.JRAbstractTextDataSource

convertNumber, convertStringValue, getConvertBean, getDatePattern, getLocale, getNumberPattern, getTextAttributes, getTimeZone, setDatePattern, setLocale, setLocale, setNumberPattern, setTextAttributes, setTextAttributes, setTimeZone, setTimeZone

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

FastExcelDataSource

public FastExcelDataSource(org.dhatim.fastexcel.reader.ReadableWorkbook workbook)

Creates a data source instance from a workbook.

Parameters:

workbook - the workbook

FastExcelDataSource

public FastExcelDataSource(InputStream is)
                    throws JRException,
IOException

Creates a data source instance from an XLSX or XLS data input stream.

Parameters:

is - an input stream containing XLSX or XLS data

Throws:

JRException

IOException

FastExcelDataSource

public FastExcelDataSource(InputStream is,
 boolean closeInputStream)
                    throws JRException,
IOException

Creates a data source instance from an XLSX or XLS data input stream.

Parameters:

is - an input stream containing XLSX or XLS data

Throws:

JRException

IOException

FastExcelDataSource

public FastExcelDataSource(File file)
                    throws JRException,
IOException

Creates a data source instance from an XLSX or XLS file.

Parameters:

file - a file containing XLSX or XLS data

Throws:

JRException

IOException

FastExcelDataSource

public FastExcelDataSource(JasperReportsContext jasperReportsContext,
 String location)
                    throws JRException,
IOException

Creates a data source instance that reads XLSX or XLS data from a given location.

Parameters:

jasperReportsContext - the JasperReportsContext

location - a String representing XLSX or XLS data source

Throws:

IOException

JRException

FastExcelDataSource

public FastExcelDataSource(RepositoryContext context,
 String location)
                    throws JRException,
IOException

Throws:

JRException

IOException

FastExcelDataSource

public FastExcelDataSource(String location)
                    throws JRException,
IOException

Throws:

JRException

IOException

See Also:

• FastExcelDataSource(JasperReportsContext, String)

Method Details

loadWorkbook

protected org.dhatim.fastexcel.reader.ReadableWorkbook loadWorkbook(InputStream is)
                                                             throws IOException

Throws:

IOException

next

public boolean next()
             throws JRException

Description copied from interface: JRDataSource

Tries to position the cursor on the next element in the data source.

Returns:

true if there is a next record, false otherwise

Throws:

JRException - if any error occurs while trying to move to the next element

moveFirst

public void moveFirst()

Description copied from interface: JRRewindableDataSource

Moves back to the first element in the data source.

getFieldValue

public Object getFieldValue(JRField jrField)
                     throws JRException

Description copied from interface: JRDataSource

Gets the field value for the current position.

Returns:

an object containing the field value. The object type must be the field object type.

Throws:

JRException

close

public void close()

Closes the reader. Users of this data source should close it after usage.

Specified by:

close in class AbstractXlsDataSource

checkReadStarted

protected void checkReadStarted()

Specified by:

checkReadStarted in class AbstractXlsDataSource

getStringFieldValue

public String getStringFieldValue(JRField jrField)
                           throws JRException

Throws:

JRException

getFieldFormatPattern

public String getFieldFormatPattern(JRField jrField)
                             throws JRException

Throws:

JRException