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


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