Package org.apache.wicket.request.parameter

Class EmptyRequestParameters

java.lang.Object

org.apache.wicket.request.parameter.EmptyRequestParameters

All Implemented Interfaces:

IRequestParameters

public class EmptyRequestParameters
extends Object
implements IRequestParameters

Read only empty IRequestParameters.

Author:

Matej Knopp

Field Summary

Fields

Modifier and Type	Field	Description
static EmptyRequestParameters	INSTANCE	Singleton instance.

Method Summary

Modifier and Type	Method	Description
Set<String>	getParameterNames()	Returns immutable set of all available parameter names.
StringValue	getParameterValue(String name)	Returns single value for parameter with specified name.
List<StringValue>	getParameterValues(String name)	Returns list of values for parameter with specified name.

Methods inherited from class java.lang.Object

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

Field Detail

INSTANCE

public static final EmptyRequestParameters INSTANCE

Singleton instance.

Method Detail

getParameterNames

public Set<String> getParameterNames()

Description copied from interface: IRequestParameters

Returns immutable set of all available parameter names.

Specified by:

getParameterNames in interface IRequestParameters

Returns:

list of parameter names

See Also:

IRequestParameters.getParameterNames()

getParameterValue

public StringValue getParameterValue(String name)

Description copied from interface: IRequestParameters

Returns single value for parameter with specified name. This method always returns non-null result even if the parameter does not exist.

Specified by:

getParameterValue in interface IRequestParameters

Parameters:

name - parameter name

Returns:

StringValue wrapping the actual value

See Also:

IRequestParameters.getParameterValue(java.lang.String)

getParameterValues

public List<StringValue> getParameterValues(String name)

Description copied from interface: IRequestParameters

Returns list of values for parameter with specified name. If the parameter does not exist this method returns null

Specified by:

getParameterValues in interface IRequestParameters

Parameters:

name - parameter name

Returns:

list of all values for given parameter or null if parameter does not exist

See Also:

IRequestParameters.getParameterValues(java.lang.String)