Package org.hibernate.loader

Enum Class BatchFetchStyle

java.lang.Object
java.lang.Enum<BatchFetchStyle>
org.hibernate.loader.BatchFetchStyle
All Implemented Interfaces:
Serializable, Comparable<BatchFetchStyle>, java.lang.constant.Constable
@Deprecated(since="6.0") public enum BatchFetchStyle extends Enum<BatchFetchStyle>
Deprecated.
see MultiKeyLoadSizingStrategy instead
Defines a type of batch loading.
See Also:

  • Enum Constant Details

    • LEGACY

      public static final BatchFetchStyle LEGACY
      Deprecated.
      The legacy algorithm where we keep a set of pre-built batch sizes based on org.hibernate.internal.util.collections.ArrayHelper#getBatchSizes. Batches are performed using the next-smaller pre-built batch size from the number of existing batchable identifiers.

      For example, with a batch-size setting of 32 the pre-built batch sizes would be [32, 16, 10, 9, 8, 7, .., 1]. An attempt to batch load 31 identifiers would result in batches of 16, 10, and 5.

    • PADDED

      public static final BatchFetchStyle PADDED
      Deprecated.
      Still keeps the concept of pre-built batch sizes, but uses the next-bigger batch size and pads the extra identifier placeholders.

      Using the same example of a batch-size setting of 32 the pre-built batch sizes would be the same. However, the attempt to batch load 31 identifiers would result just a single batch of size 32. The identifiers to load would be "padded" (aka, repeated) to make up the difference.

    • DYNAMIC

      public static final BatchFetchStyle DYNAMIC
      Deprecated.
      Dynamically builds its SQL based on the actual number of available ids. Does still limit to the batch-size defined on the entity/collection

  • Method Details

    • values

      public static BatchFetchStyle[] values()
      Deprecated.
      Returns an array containing the constants of this enum class, in the order they are declared.
      Returns:
      an array containing the constants of this enum class, in the order they are declared

    • valueOf

      public static BatchFetchStyle valueOf(String name)
      Deprecated.
      Returns the enum constant of this class with the specified name. The string must match exactly an identifier used to declare an enum constant in this class. (Extraneous whitespace characters are not permitted.)
      Parameters:
      name - the name of the enum constant to be returned.
      Returns:
      the enum constant with the specified name
      Throws:
      IllegalArgumentException - if this enum class has no constant with the specified name
      NullPointerException - if the argument is null

    • byName

      public static BatchFetchStyle byName(String name)
      Deprecated.

    • interpret

      public static BatchFetchStyle interpret(Object setting)
      Deprecated.