Package net.sf.jasperreports.engine.base

Class JRBaseGenericElementParameter

java.lang.Object

net.sf.jasperreports.engine.base.JRBaseGenericElementParameter

All Implemented Interfaces:

Serializable, Cloneable, JRCloneable, JRGenericElementParameter

Direct Known Subclasses:

JRDesignGenericElementParameter

public class JRBaseGenericElementParameter
extends Object
implements JRGenericElementParameter, Serializable

A read-only implementation of JRGenericElementParameter that is included in compiled reports.

Author:

Lucian Chirita (lucianc@users.sourceforge.net)

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
protected String	name
protected boolean	skipWhenEmpty
protected JRExpression	valueExpression

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	JRBaseGenericElementParameter()
	JRBaseGenericElementParameter(JRGenericElementParameter parameter, JRBaseObjectFactory factory)	Creates a generic element parameter by copying an existing instance.

Method Summary

Modifier and Type	Method	Description
Object	clone()
String	getName()	Returns the name of the parameter.
JRExpression	getValueExpression()	Returns the expression that provides parameter values.
boolean	isSkipWhenEmpty()	Decides whether the parameter is skipped when its value evaluates to null.

Methods inherited from class java.lang.Object

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

Field Details

name

protected String name

valueExpression

protected JRExpression valueExpression

skipWhenEmpty

protected boolean skipWhenEmpty

Constructor Details

JRBaseGenericElementParameter

protected JRBaseGenericElementParameter()

JRBaseGenericElementParameter

public JRBaseGenericElementParameter(JRGenericElementParameter parameter,
 JRBaseObjectFactory factory)

Creates a generic element parameter by copying an existing instance.

Parameters:

parameter - the parameter to copy

factory - the object factory to be used for creating sub objects

Method Details

getName

public String getName()

Description copied from interface: JRGenericElementParameter

Returns the name of the parameter.

The name will be propagated into the generic print element, as in JRGenericPrintElement.setParameterValue(String, Object).

Specified by:

getName in interface JRGenericElementParameter

Returns:

the name of the parameter

getValueExpression

public JRExpression getValueExpression()

Description copied from interface: JRGenericElementParameter

Returns the expression that provides parameter values.

The result of the expression evaluation will be propagated into the generic print element as parameter value, as in JRGenericPrintElement.setParameterValue(String, Object).

Specified by:

getValueExpression in interface JRGenericElementParameter

Returns:

the parameter's value expression

isSkipWhenEmpty

public boolean isSkipWhenEmpty()

Description copied from interface: JRGenericElementParameter

Decides whether the parameter is skipped when its value evaluates to null.

When the parameter's expression evaluates to null and this flag is set and , the parameter is not included in the generated print element. If the flag is not set, the parameter is included with a null value.

Specified by:

isSkipWhenEmpty in interface JRGenericElementParameter

Returns:

whether the parameter is skipped when its value is null

clone

public Object clone()

Specified by:

clone in interface JRCloneable

Overrides:

clone in class Object