net.sf.jasperreports.engine
Class JRResultSetDataSource

java.lang.Object
  net.sf.jasperreports.engine.JRResultSetDataSource

All Implemented Interfaces:

JRDataSource

public class JRResultSetDataSource
extends java.lang.Object
implements JRDataSource

An implementation of a data source that uses a supplied ResultSet.

Version:

$Id: JRResultSetDataSource.java 3939 2010-08-20 09:52:00Z teodord $

Author:

Teodor Danciu ([email protected])

Constructor Summary

JRResultSetDataSource(java.sql.ResultSet rs)

Method Summary

protected java.lang.String	clobToString(java.sql.Clob clob)
protected java.io.CharArrayReader	getArrayReader(java.io.Reader reader, long size)
java.lang.Object	getFieldValue(JRField field) Gets the field value for the current position.
boolean	next() Tries to position the cursor on the next element in the data source.
protected byte[]	readBytes(java.io.InputStream is, long size)
protected byte[]	readBytes(java.lang.Integer columnIndex)
protected java.lang.Integer	searchColumnByLabel(java.lang.String fieldName)
protected java.lang.Integer	searchColumnByName(java.lang.String fieldName)

Methods inherited from class java.lang.Object

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

Constructor Detail

JRResultSetDataSource

public JRResultSetDataSource(java.sql.ResultSet rs)

Method Detail

next

public boolean next()
             throws JRException

Description copied from interface: JRDataSource

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

Specified by:

next in interface JRDataSource

Returns:

true if there is a next record, false otherwise

Throws:

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

getFieldValue

public java.lang.Object getFieldValue(JRField field)
                               throws JRException

Description copied from interface: JRDataSource

Gets the field value for the current position.

Specified by:

getFieldValue in interface JRDataSource

Returns:

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

Throws:

JRException

searchColumnByName

protected java.lang.Integer searchColumnByName(java.lang.String fieldName)
                                        throws java.sql.SQLException

Throws:

java.sql.SQLException

searchColumnByLabel

protected java.lang.Integer searchColumnByLabel(java.lang.String fieldName)
                                         throws java.sql.SQLException

Throws:

java.sql.SQLException

clobToString

protected java.lang.String clobToString(java.sql.Clob clob)
                                 throws JRException

Throws:

JRException

getArrayReader

protected java.io.CharArrayReader getArrayReader(java.io.Reader reader,
                                                 long size)
                                          throws java.io.IOException

Throws:

java.io.IOException

readBytes

protected byte[] readBytes(java.lang.Integer columnIndex)
                    throws java.sql.SQLException,
                           java.io.IOException

Throws:

java.sql.SQLException

java.io.IOException

readBytes

protected byte[] readBytes(java.io.InputStream is,
                           long size)
                    throws java.io.IOException

Throws:

java.io.IOException