Package in.co.akshitbansal.springwebquery.resolver

Class EntityAwareRsqlSpecArgumentResolver

java.lang.Object

in.co.akshitbansal.springwebquery.resolver.RsqlSpecArgumentResolver

in.co.akshitbansal.springwebquery.resolver.EntityAwareRsqlSpecArgumentResolver

All Implemented Interfaces:

org.springframework.web.method.support.HandlerMethodArgumentResolver

public class EntityAwareRsqlSpecArgumentResolver
extends RsqlSpecArgumentResolver

Entity-based resolver for Specification parameters annotated with RsqlSpec.

This resolver is active when WebQuery.dtoClass() is not configured (i.e. equals void.class). It validates incoming RSQL selectors against entity fields and optional FieldMapping aliases before producing a JPA specification.

Field Summary

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

annotationUtil, customPredicates, rsqlParser

Constructor Summary

Constructors

Constructor	Description
EntityAwareRsqlSpecArgumentResolver(Set<RsqlOperator> defaultOperators, Set<? extends RsqlCustomOperator<?>> customOperators, AnnotationUtil annotationUtil)	Creates an entity-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

EntityAwareRsqlSpecArgumentResolver

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

Creates an entity-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 no DTO class is configured

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