Package jakarta.persistence

Interface Parameter<T>

Type Parameters:
T - the type of the parameter
All Known Subinterfaces:
ParameterExpression<T>
public interface Parameter<T>
Type for query parameter objects.
Since:
2.0
See Also:

  • Method Summary

    Modifier and Type
    Method
    Description
    String
    getName()
    Return the parameter name, or null if the parameter is not a named parameter or no name has been assigned.
    Class<T>
    getParameterType()
    Return the Java type of the parameter.
    Integer
    getPosition()
    Return the parameter position, or null if the parameter is not a positional parameter.

  • Method Details

    • getName

      String getName()
      Return the parameter name, or null if the parameter is not a named parameter or no name has been assigned.
      Returns:
      parameter name

    • getPosition

      Integer getPosition()
      Return the parameter position, or null if the parameter is not a positional parameter.
      Returns:
      position of parameter

    • getParameterType

      Class<T> getParameterType()
      Return the Java type of the parameter. Values bound to the parameter must be assignable to this type. This method is required to be supported for criteria queries only. Applications that use this method for Jakarta Persistence query language queries and native queries will not be portable.
      Returns:
      the Java type of the parameter
      Throws:
      IllegalStateException - if invoked on a parameter obtained from a query language query or native query when the implementation does not support this usage