ninja.params

Class ValidatingArgumentExtractor<T>

java.lang.Object

ninja.params.ValidatingArgumentExtractor<T>

All Implemented Interfaces:

ArgumentExtractor<T>

public class ValidatingArgumentExtractor<T>
extends Object
implements ArgumentExtractor<T>

Argument extractor that wraps another argument extractor and validates its argument

Author:

James Roper

Constructor Summary

Constructors

Constructor and Description
ValidatingArgumentExtractor(ArgumentExtractor<T> wrapped, List<Validator<T>> validators)

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

Methods inherited from class java.lang.Object

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

Constructor Detail

ValidatingArgumentExtractor

public ValidatingArgumentExtractor(ArgumentExtractor<T> wrapped,
                                   List<Validator<T>> validators)

Method Detail

extract

public T extract(Context context)

Description copied from interface: ArgumentExtractor

Extract the argument from the context

Specified by:

extract in interface ArgumentExtractor<T>

Parameters:

context - The argument to extract

Returns:

The extracted argument

getExtractedType

public Class<T> getExtractedType()

Description copied from interface: ArgumentExtractor

Get the type of the argument that is extracted

Specified by:

getExtractedType in interface ArgumentExtractor<T>

Returns:

The type of the argument that is being extracted

getFieldName

public String getFieldName()

Description copied from interface: ArgumentExtractor

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

Specified by:

getFieldName in interface ArgumentExtractor<T>

Returns:

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