Package in.co.akshitbansal.springwebquery.util

Class FieldResolvingUtil

java.lang.Object

in.co.akshitbansal.springwebquery.util.FieldResolvingUtil

public class FieldResolvingUtil
extends Object

Shared field/path resolution helpers used by DTO-aware and entity-aware query validation flows.

This utility centralizes:

• DTO selector path resolution and DTO-to-entity path translation.
• Entity selector resolution with FieldMapping alias handling.
• Terminal field validation hooks supplied by callers.

Methods throw library-specific query exceptions so resolver and visitor layers can surface consistent validation/configuration errors.

Method Summary

Modifier and Type	Method	Description
static String	buildEntityPathFromDtoPath(Class<?> entityClass, Class<?> dtoClass, String dtoPath, Consumer<Field> terminalFieldValidator)	Resolves a DTO selector path, validates its terminal DTO field, maps it to an entity path, and validates that the mapped path exists on the entity.
static String	resolveEntityPath(Class<?> entityClass, String reqFieldPath, Map<String,FieldMapping> fieldMappingMap, Map<String,FieldMapping> originalFieldNameMap, Consumer<Field> terminalFieldValidator)	Resolves an incoming entity-aware selector path by applying configured FieldMapping aliases and validating the resolved terminal field.

Methods inherited from class java.lang.Object

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

Method Details

buildEntityPathFromDtoPath

public static String buildEntityPathFromDtoPath(Class<?> entityClass,
 Class<?> dtoClass,
 String dtoPath,
 Consumer<Field> terminalFieldValidator)

Resolves a DTO selector path, validates its terminal DTO field, maps it to an entity path, and validates that the mapped path exists on the entity.

Parameters:

entityClass - entity type used to validate mapped path existence

dtoClass - DTO type used to resolve incoming selector path

dtoPath - incoming selector path from request

terminalFieldValidator - validation callback for the terminal DTO field

Returns:

mapped entity path corresponding to dtoPath

Throws:

QueryFieldValidationException - if the DTO selector cannot be resolved

QueryConfigurationException - if the mapped entity path cannot be resolved

resolveEntityPath

public static String resolveEntityPath(Class<?> entityClass,
 String reqFieldPath,
 Map<String,FieldMapping> fieldMappingMap,
 Map<String,FieldMapping> originalFieldNameMap,
 Consumer<Field> terminalFieldValidator)

Resolves an incoming entity-aware selector path by applying configured FieldMapping aliases and validating the resolved terminal field.

Parameters:

entityClass - entity type used for path resolution

reqFieldPath - incoming selector path from request

fieldMappingMap - mappings keyed by alias name

originalFieldNameMap - mappings keyed by original entity field path

terminalFieldValidator - validation callback for the resolved terminal field

Returns:

resolved entity field path after alias substitution

Throws:

QueryFieldValidationException - if the selector is disallowed or cannot be resolved