Interface RegistryQuery<T>

All Superinterfaces:
Serializable

public interface RegistryQuery<T> extends Serializable
Interface for query instances used by RegistryJpaIO.Read.
  • Field Details

    • QUERY_FETCH_SIZE

      static final int QUERY_FETCH_SIZE
      Number of JPA entities to fetch in each batch during a query.

      With Hibernate, for result streaming to work, a query's fetchSize property must be set to a non-zero value.

      See Also:
  • Method Details

    • stream

      Stream<T> stream()
    • createQuery

      static <T> RegistryQuery<T> createQuery(String sql, @Nullable Map<String,Object> parameters, boolean nativeQuery)
      Returns a RegistryQuery that creates a string query from constant text.
      Type Parameters:
      T - Type of each row in the result set, Object in single-select queries, and Object[] in multi-select queries.
      Parameters:
      nativeQuery - whether the given string is to be interpreted as a native query or JPQL.
      parameters - parameters to be substituted in the query.
    • createQuery

      static <T> RegistryQuery<T> createQuery(String jpql, @Nullable Map<String,Object> parameters, Class<T> clazz)
      Returns a RegistryQuery that creates a typed JPQL query from constant text.
      Type Parameters:
      T - Type of each row in the result set.
      Parameters:
      parameters - parameters to be substituted in the query.
    • createQuery

      static <T> RegistryQuery<T> createQuery(RegistryQuery.CriteriaQuerySupplier<T> criteriaQuery)
      Returns a RegistryQuery from a CriteriaQuery supplier.

      A serializable supplier is needed in because CriteriaQuery itself must be created within a transaction, and we are not in a transaction yet when this function is called to set up the pipeline.

      Type Parameters:
      T - Type of each row in the result set.
    • detach

      static <T> T detach(javax.persistence.EntityManager entityManager, T object)
      Removes an object from the JPA session cache if applicable.
      Parameters:
      object - An object that represents a row in the result set. It may be a JPA entity, a non-entity object, or an array that holds JPA entities and/or non-entities.
    • detachObject

      static void detachObject(javax.persistence.EntityManager entityManager, Object object)