Package in.co.akshitbansal.springwebquery.resolver

Class DtoAwareRsqlSpecArgumentResolver

java.lang.Object

in.co.akshitbansal.springwebquery.resolver.RsqlSpecArgumentResolver

in.co.akshitbansal.springwebquery.resolver.DtoAwareRsqlSpecArgumentResolver

All Implemented Interfaces:

org.springframework.web.method.support.HandlerMethodArgumentResolver

public class DtoAwareRsqlSpecArgumentResolver
extends RsqlSpecArgumentResolver

DTO-based resolver for Specification parameters annotated with RsqlSpec.

This resolver is active when WebQuery.dtoClass() is configured. Incoming RSQL selectors are validated against DTO fields and then translated to entity paths before the specification is produced.

Field Summary

Fields inherited from class in.co.akshitbansal.springwebquery.resolver.RsqlSpecArgumentResolver

annotationUtil, customPredicates, rsqlParser

Constructor Summary

Constructors

Constructor	Description
DtoAwareRsqlSpecArgumentResolver(Set<RsqlOperator> defaultOperators, Set<? extends RsqlCustomOperator<?>> customOperators, AnnotationUtil annotationUtil)	Creates a DTO-aware RSQL specification resolver.

Method Summary

Modifier and Type	Method	Description
@Nullable Object	resolveArgument(@NonNull org.springframework.core.MethodParameter parameter, @Nullable org.springframework.web.method.support.ModelAndViewContainer mavContainer, @NonNull org.springframework.web.context.request.NativeWebRequest webRequest, @Nullable org.springframework.web.bind.support.WebDataBinderFactory binderFactory)	Resolves a Specification from the configured RSQL request parameter.
boolean	supportsParameter(org.springframework.core.MethodParameter parameter)	Determines whether this resolver should handle the given parameter.

Methods inherited from class java.lang.Object

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

Constructor Details

DtoAwareRsqlSpecArgumentResolver

public DtoAwareRsqlSpecArgumentResolver(Set<RsqlOperator> defaultOperators,
 Set<? extends RsqlCustomOperator<?>> customOperators,
 AnnotationUtil annotationUtil)

Creates a DTO-aware RSQL specification resolver.

Parameters:

defaultOperators - built-in operators accepted in RSQL expressions

customOperators - custom operators supported by parser and predicates

annotationUtil - utility for resolving annotations and configuration checks

Method Details

supportsParameter

public boolean supportsParameter(org.springframework.core.MethodParameter parameter)

Determines whether this resolver should handle the given parameter.

Parameters:

parameter - method parameter under inspection

Returns:

true when parameter is a Specification with RsqlSpec and method-level WebQuery has a DTO class

resolveArgument

public @Nullable Object resolveArgument(@NonNull
 @NonNull org.springframework.core.MethodParameter parameter,
 @Nullable org.springframework.web.method.support.ModelAndViewContainer mavContainer,
 @NonNull
 @NonNull org.springframework.web.context.request.NativeWebRequest webRequest,
 @Nullable org.springframework.web.bind.support.WebDataBinderFactory binderFactory)
                                 throws Exception

Resolves a Specification from the configured RSQL request parameter.

Parameters:

parameter - controller method parameter being resolved

mavContainer - current MVC container

webRequest - current request

binderFactory - binder factory

Returns:

resolved specification, or Specification.unrestricted() when no filter exists

Throws:

Exception - when resolution fails