Package nl.datasteel.crudcraft.runtime.service.strategy

Interface QueryExecutionStrategy<T>

All Known Implementing Classes:
JpaSpecificationExecutionStrategy, QuerydslExecutionStrategy
public interface QueryExecutionStrategy<T>
Strategy abstraction for executing queries using either QueryDSL or JPA Specifications.

  • Method Summary

    Modifier and Type
    Method
    Description
    long
    count(com.querydsl.core.types.Predicate predicate, org.springframework.data.jpa.domain.Specification<T> spec)
    Counts the number of entities matching the given predicate and specification.
    boolean
    exists(com.querydsl.core.types.Predicate predicate, org.springframework.data.jpa.domain.Specification<T> spec)
    Checks if any entity matches the given predicate and specification.
    List<T>
    findAll(com.querydsl.core.types.Predicate predicate, org.springframework.data.jpa.domain.Specification<T> spec)
    Finds all entities matching the given predicate and specification.
    <R> List<R>
    findAll(com.querydsl.core.types.Predicate predicate, org.springframework.data.jpa.domain.Specification<T> spec, Class<R> projection)
    Finds all entities matching the given predicate and specification, returning a paginated result.
    org.springframework.data.domain.Page<T>
    findAll(com.querydsl.core.types.Predicate predicate, org.springframework.data.jpa.domain.Specification<T> spec, org.springframework.data.domain.Pageable pageable)
    Finds all entities matching the given predicate and specification, returning a paginated result.
    <R> org.springframework.data.domain.Page<R>
    findAll(com.querydsl.core.types.Predicate predicate, org.springframework.data.jpa.domain.Specification<T> spec, org.springframework.data.domain.Pageable pageable, Class<R> projection)
    Finds all entities matching the given predicate and specification, returning a paginated result.
    Optional<T>
    findOne(com.querydsl.core.types.Predicate predicate, org.springframework.data.jpa.domain.Specification<T> spec)
    Finds a single entity matching the given predicate and specification.
    <R> Optional<R>
    findOne(com.querydsl.core.types.Predicate predicate, org.springframework.data.jpa.domain.Specification<T> spec, Class<R> projection)
    Finds a single entity matching the given predicate and specification.

  • Method Details

    • findAll

      org.springframework.data.domain.Page<T> findAll(com.querydsl.core.types.Predicate predicate, org.springframework.data.jpa.domain.Specification<T> spec, org.springframework.data.domain.Pageable pageable)
      Finds all entities matching the given predicate and specification, returning a paginated result.
      Parameters:
      predicate - the QueryDSL predicate to filter results
      spec - the JPA specification to apply additional filters
      pageable - the pagination information
      Returns:
      a page of entities matching the criteria

    • findAll

      List<T> findAll(com.querydsl.core.types.Predicate predicate, org.springframework.data.jpa.domain.Specification<T> spec)
      Finds all entities matching the given predicate and specification.
      Parameters:
      predicate - the QueryDSL predicate to filter results
      spec - the JPA specification to apply additional filters
      Returns:
      a list of entities matching the criteria

    • findAll

      <R> org.springframework.data.domain.Page<R> findAll(com.querydsl.core.types.Predicate predicate, org.springframework.data.jpa.domain.Specification<T> spec, org.springframework.data.domain.Pageable pageable, Class<R> projection)
      Finds all entities matching the given predicate and specification, returning a paginated result.
      Parameters:
      predicate - the Querydsl predicate to filter results
      spec - the JPA specification to apply additional filters
      pageable - the pagination information
      projection - the class type for the projection
      Returns:
      a page of entities matching given criteria, projected to the specified type.

    • findAll

      <R> List<R> findAll(com.querydsl.core.types.Predicate predicate, org.springframework.data.jpa.domain.Specification<T> spec, Class<R> projection)
      Finds all entities matching the given predicate and specification, returning a paginated result.
      Parameters:
      predicate - the QueryDSL predicate to filter results
      spec - the JPA specification to apply additional filters
      projection - the class type for the projection
      Returns:
      a page of entities matching the criteria, projected to the specified type

    • findOne

      Optional<T> findOne(com.querydsl.core.types.Predicate predicate, org.springframework.data.jpa.domain.Specification<T> spec)
      Finds a single entity matching the given predicate and specification.
      Parameters:
      predicate - the QueryDSL predicate to filter results
      spec - the JPA specification to apply additional filters
      Returns:
      an Optional containing the found entity, or empty if none found

    • findOne

      <R> Optional<R> findOne(com.querydsl.core.types.Predicate predicate, org.springframework.data.jpa.domain.Specification<T> spec, Class<R> projection)
      Finds a single entity matching the given predicate and specification.
      Parameters:
      predicate - the QueryDSL predicate to filter results
      spec - the JPA specification to apply additional filters
      Returns:
      an Optional containing the found entity, or empty if none found

    • exists

      boolean exists(com.querydsl.core.types.Predicate predicate, org.springframework.data.jpa.domain.Specification<T> spec)
      Checks if any entity matches the given predicate and specification.
      Parameters:
      predicate - the QueryDSL predicate to filter results
      spec - the JPA specification to apply additional filters
      Returns:
      true if at least one entity matches the criteria, false otherwise

    • count

      long count(com.querydsl.core.types.Predicate predicate, org.springframework.data.jpa.domain.Specification<T> spec)
      Counts the number of entities matching the given predicate and specification.
      Parameters:
      predicate - the QueryDSL predicate to filter results
      spec - the JPA specification to apply additional filters
      Returns:
      the count of entities matching the criteria