ninja.params

Interface ArgumentExtractor<T>

All Known Implementing Classes:

ArgumentExtractors.AttributeExtractor, ArgumentExtractors.BodyAsExtractor, ArgumentExtractors.ContextExtractor, ArgumentExtractors.FileItemParamExtractor, ArgumentExtractors.FileItemParamsExtractor, ArgumentExtractors.FileParamExtractor, ArgumentExtractors.FileParamsExtractor, ArgumentExtractors.FlashExtractor, ArgumentExtractors.HeaderExtractor, ArgumentExtractors.HeadersExtractor, ArgumentExtractors.InputStreamParamExtractor, ArgumentExtractors.InputStreamParamsExtractor, ArgumentExtractors.ParamExtractor, ArgumentExtractors.ParamsExtractor, ArgumentExtractors.PathParamExtractor, ArgumentExtractors.SessionExtractor, ArgumentExtractors.SessionParamExtractor, ArgumentExtractors.ValidationExtractor, ParsingArgumentExtractor, ParsingArrayExtractor, ValidatingArgumentExtractor, WebSocketHandshakeExtractor

public interface ArgumentExtractor<T>

Extracts a controller argument from the context

Author:

James Roper

Method Summary

Modifier and Type	Method and Description
T	extract(Context context) Extract the argument from the context
Class<T>	getExtractedType() Get the type of the argument that is extracted
String	getFieldName() Get the field name that is being extracted, if this value is extracted from a field

Method Detail

extract

T extract(Context context)

Extract the argument from the context

Parameters:

context - The argument to extract

Returns:

The extracted argument

getExtractedType

Class<T> getExtractedType()

Get the type of the argument that is extracted

Returns:

The type of the argument that is being extracted

getFieldName

String getFieldName()

Get the field name that is being extracted, if this value is extracted from a field

Returns:

The field name, or null if the argument isn't extracted from a named field