Package com.github.collinalpert.java2db.queries

Interface Queryable<T>

All Superinterfaces:
SingleQueryable<T>
All Known Subinterfaces:
AsyncQueryable<T>
All Known Implementing Classes:
AsyncEntityProjectionQuery, AsyncEntityQuery, AsyncStoredProcedureQuery, EntityProjectionQuery, EntityQuery, StoredProcedureQuery
public interface Queryable<T>
extends SingleQueryable<T>
Author:
Collin Alpert

  • Method Summary

    Modifier and Type Method Description
    T[] toArray()
    Executes a new query and returns the result as an array.
    List<T> toList()
    Executes the query and returns the result as a List.
    default <K> Map<K,​T> toMap​(Function<T,​K> keyMapping)
    Executes a new query and returns the result as a Map.
    <K,​ V> Map<K,​V> toMap​(Function<T,​K> keyMapping, Function<T,​V> valueMapping)
    Executes a new query and returns the result as a Map.
    Stream<T> toStream()
    Executes the query and returns the result as a Stream.

    Methods inherited from interface com.github.collinalpert.java2db.queries.SingleQueryable

    first, getQuery

  • Method Details

    • toList

      List<T> toList()
      Executes the query and returns the result as a List.
      Returns:
      A list of entities representing the result rows.

    • toStream

      Stream<T> toStream()
      Executes the query and returns the result as a Stream.
      Returns:
      A list of entities representing the result rows.

    • toArray

      T[] toArray()
      Executes a new query and returns the result as an array.
      Returns:
      An array of entities representing the result rows.

    • toMap

      default <K> Map<K,​T> toMap​(Function<T,​K> keyMapping)
      Executes a new query and returns the result as a Map. This method is equivalent to the call Queryable#toMap(keyMapping, x -> x).
      Type Parameters:
      K - The type of the field representing the keys.
      Parameters:
      keyMapping - The field representing the keys of the map.
      Returns:
      A map containing the result of the query.

    • toMap

      <K,​ V> Map<K,​V> toMap​(Function<T,​K> keyMapping, Function<T,​V> valueMapping)
      Executes a new query and returns the result as a Map.
      Type Parameters:
      K - The type of the field representing the keys.
      V - The type of the field representing the values.
      Parameters:
      keyMapping - The field representing the keys of the map.
      valueMapping - The field representing the values of the map.
      Returns:
      A map containing the result of the query.