Package nl.datasteel.crudcraft.projection.impl.querydsl

Class QuerydslProjectionExecutor

java.lang.Object

nl.datasteel.crudcraft.projection.impl.querydsl.QuerydslProjectionExecutor

All Implemented Interfaces:

ProjectionExecutor

public class QuerydslProjectionExecutor
extends Object
implements ProjectionExecutor

QueryDSL-based implementation of ProjectionExecutor.

Constructor Summary

Constructors

Constructor	Description
QuerydslProjectionExecutor(com.querydsl.jpa.impl.JPAQueryFactory queryFactory, jakarta.persistence.metamodel.Metamodel metamodel, QuerydslProjectionBuilder projectionBuilder, ProjectionMetadataRegistry metadataRegistry)	Constructs a new QuerydslProjectionExecutor with the given parameters.

Method Summary

Modifier and Type	Method	Description
<T, D> ProjectionResult<D>	project(Class<T> entityType, Class<D> dtoType, ProjectionQuery<T> query)	Projects the given entity type into the specified DTO type using QueryDSL.

Methods inherited from class java.lang.Object

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

Constructor Details

QuerydslProjectionExecutor

public QuerydslProjectionExecutor(com.querydsl.jpa.impl.JPAQueryFactory queryFactory,
 jakarta.persistence.metamodel.Metamodel metamodel,
 QuerydslProjectionBuilder projectionBuilder,
 ProjectionMetadataRegistry metadataRegistry)

Constructs a new QuerydslProjectionExecutor with the given parameters.

Parameters:

queryFactory - the JPAQueryFactory to use for executing queries

metamodel - the JPA Metamodel to use for accessing entity metadata

projectionBuilder - the QuerydslProjectionBuilder to build projection expressions

metadataRegistry - the ProjectionMetadataRegistry to access compile-time generated metadata

Method Details

project

public <T,
D> ProjectionResult<D> project(Class<T> entityType,
 Class<D> dtoType,
 ProjectionQuery<T> query)

Projects the given entity type into the specified DTO type using QueryDSL. The query can include filtering, sorting, and pagination.

Specified by:

project in interface ProjectionExecutor

Type Parameters:

T - the type of the entity

D - the type of the DTO

Parameters:

entityType - the type of the entity to project

dtoType - the type of the DTO to project into

query - the projection query containing filters, sorting, and pagination

Returns:

a ProjectionResult containing the projected data and total count