Package org.springframework.web.service.invoker

Class AbstractNamedValueArgumentResolver

java.lang.Object

org.springframework.web.service.invoker.AbstractNamedValueArgumentResolver

All Implemented Interfaces:

HttpServiceArgumentResolver

Direct Known Subclasses:

CookieValueArgumentResolver, PathVariableArgumentResolver, RequestAttributeArgumentResolver, RequestHeaderArgumentResolver, RequestParamArgumentResolver, RequestPartArgumentResolver

public abstract class AbstractNamedValueArgumentResolver
extends Object
implements HttpServiceArgumentResolver

Base class for arguments that resolve to a named request value such as a request header, path variable, cookie, and others.

Since:

6.0

Author:

Rossen Stoyanchev, Olga Maciaszek-Sharma

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
protected static class	AbstractNamedValueArgumentResolver.NamedValueInfo	Info about a request value, typically extracted from a method parameter annotation.

Field Summary

Fields

Modifier and Type	Field	Description
protected final Log	logger

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	AbstractNamedValueArgumentResolver()	Constructor for a resolver to an Object value, without conversion.
protected	AbstractNamedValueArgumentResolver(ConversionService conversionService)	Constructor for a resolver to a String value.

Method Summary

Modifier and Type	Method	Description
protected abstract void	addRequestValue(String name, Object value, MethodParameter parameter, HttpRequestValues.Builder requestValues)	Add the given, single request value.
protected abstract AbstractNamedValueArgumentResolver.NamedValueInfo	createNamedValueInfo(MethodParameter parameter)	Return information about the request value, or null if the parameter does not represent a request value of interest.
protected AbstractNamedValueArgumentResolver.NamedValueInfo	createNamedValueInfo(MethodParameter parameter, HttpRequestValues.Metadata metadata)	Variant of createNamedValueInfo(MethodParameter) that also provides access to the static values set from @HttpExchange attributes.
boolean	resolve(Object argument, MethodParameter parameter, HttpRequestValues.Builder requestValues)	Resolve the argument value.

Methods inherited from class java.lang.Object

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

Field Details

logger

protected final Log logger

Constructor Details

AbstractNamedValueArgumentResolver

protected AbstractNamedValueArgumentResolver(ConversionService conversionService)

Constructor for a resolver to a String value.

Parameters:

conversionService - the ConversionService to use to format Object to String values

AbstractNamedValueArgumentResolver

protected AbstractNamedValueArgumentResolver()

Constructor for a resolver to an Object value, without conversion.

Method Details

resolve

public boolean resolve(@Nullable
 Object argument,
 MethodParameter parameter,
 HttpRequestValues.Builder requestValues)

Description copied from interface: HttpServiceArgumentResolver

Resolve the argument value.

Specified by:

resolve in interface HttpServiceArgumentResolver

Parameters:

argument - the argument value

parameter - the method parameter for the argument

requestValues - builder to add HTTP request values to

Returns:

true if the argument was resolved, false otherwise

createNamedValueInfo

@Nullable
protected abstract AbstractNamedValueArgumentResolver.NamedValueInfo createNamedValueInfo(MethodParameter parameter)

Return information about the request value, or null if the parameter does not represent a request value of interest.

createNamedValueInfo

@Nullable
protected AbstractNamedValueArgumentResolver.NamedValueInfo createNamedValueInfo(MethodParameter parameter,
 HttpRequestValues.Metadata metadata)

Variant of createNamedValueInfo(MethodParameter) that also provides access to the static values set from @HttpExchange attributes.

Since:

6.2

addRequestValue

protected abstract void addRequestValue(String name,
 Object value,
 MethodParameter parameter,
 HttpRequestValues.Builder requestValues)

Add the given, single request value. This may be called multiples times if the request value is multivalued.

If the resolver was created with a ConversionService, the value will have been converted to a String and may be cast down.

Parameters:

name - the request value name

value - the value

parameter - the method parameter type, nested if Map, List/array, or Optional

requestValues - builder to add the request value to