Package in.co.akshitbansal.springwebquery.ast

Class DTOValidationRSQLVisitor

java.lang.Object

in.co.akshitbansal.springwebquery.ast.AbstractValidationRSQLVisitor

in.co.akshitbansal.springwebquery.ast.DTOValidationRSQLVisitor

All Implemented Interfaces:

cz.jirutka.rsql.parser.ast.RSQLVisitor<Void,NodeMetadata>

public class DTOValidationRSQLVisitor
extends AbstractValidationRSQLVisitor

RSQL AST visitor that validates filters against a DTO contract and maps DTO property paths to entity property paths via a shared FieldResolver contract.

This visitor is used when WebQuery.dtoClass() is configured. It enforces that:

• The requested selector exists on the DTO type.
• The terminal DTO field is annotated with RSQLFilterable.
• The requested operator is allowed for that DTO field.
• The resulting mapped entity path can be resolved on the configured entity type.

During validation, selector mappings are captured and exposed via getFieldMappings() so downstream query construction can apply DTO-to-entity path translation.

Field Summary

Fields inherited from class in.co.akshitbansal.springwebquery.ast.AbstractValidationRSQLVisitor

fieldResolver, filterableFieldValidator

Constructor Summary

Constructors

Constructor	Description
DTOValidationRSQLVisitor(FieldResolver fieldResolver, FilterableFieldValidator filterableFieldValidator, boolean andNodeAllowed, boolean orNodeAllowed, int maxDepth)	Creates a DTO-aware validation visitor.

Method Summary

Modifier and Type	Method	Description
Map<String,String>	getFieldMappings()	Returns immutable selector mappings generated while visiting nodes.
protected void	validateComparisonNode(cz.jirutka.rsql.parser.ast.ComparisonNode node)	Validates a single comparison expression and records DTO-to-entity mapping.

Methods inherited from class in.co.akshitbansal.springwebquery.ast.AbstractValidationRSQLVisitor

validateNode, visit, visit, visit

Methods inherited from class java.lang.Object

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

Constructor Details

DTOValidationRSQLVisitor

public DTOValidationRSQLVisitor(FieldResolver fieldResolver,
 FilterableFieldValidator filterableFieldValidator,
 boolean andNodeAllowed,
 boolean orNodeAllowed,
 int maxDepth)

Creates a DTO-aware validation visitor.

Parameters:

fieldResolver - resolver that validates DTO selectors and maps them to entity paths

filterableFieldValidator - validator used to enforce RSQLFilterable constraints

andNodeAllowed - whether logical AND operator is allowed

orNodeAllowed - whether logical OR operator is allowed

maxDepth - maximum allowed depth for the RSQL AST

Method Details

getFieldMappings

public Map<String,String> getFieldMappings()

Returns immutable selector mappings generated while visiting nodes.

Returns:

map from request DTO path to resolved entity path collected so far

validateComparisonNode

protected void validateComparisonNode(cz.jirutka.rsql.parser.ast.ComparisonNode node)

Validates a single comparison expression and records DTO-to-entity mapping.

Specified by:

validateComparisonNode in class AbstractValidationRSQLVisitor

Parameters:

node - node to validate