org.apache.tapestry5
Interface EventContext

All Known Implementing Classes:

AbstractEventContext, ArrayEventContext, EmptyEventContext, URLEventContext

public interface EventContext

A collection of parameters that may eventually be passed to an event handler method. Includes the ability to coerce or encode parameters as needed.

See Also:

TypeCoercer, ValueEncoder

Method Summary

<T> T	get(Class<T> desiredType, int index) Extracts a parameter value and coerces or decodes it to the desired type.
int	getCount() Returns the number of parameter values that can be extracted.
String[]	toStrings() Extracts the value of each context value as a string.

Method Detail

getCount

int getCount()

Returns the number of parameter values that can be extracted.

get

<T> T get(Class<T> desiredType,
          int index)

Extracts a parameter value and coerces or decodes it to the desired type.

Parameters:

desiredType - the type of value required

index - identifies which parameter value to extract

Returns:

the value extracted and converted or coerced

Throws:

RuntimeException - if the value can't be converted or the index is out of range

toStrings

String[] toStrings()

Extracts the value of each context value as a string.

Returns:

context values

Since:

5.2.0