javax.persistence.Parameter - JPA interface
javax.persistence
Interface Parameter<T>
- Subinterfaces:
- ParameterExpression
Type for query parameter objects.
- Since:
- JPA 2.0
- See Also:
- Query
- TypedQuery
Learn how to define and use JPA/JPQL queries in Chapter 4 of the ObjectDB/JPA manual.
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
- Since:
- JPA 2.0
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 Java 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 Java persistence query language query or native query when the implementation does not support this use
- Since:
- JPA 2.0
Integer getPosition()
Return the parameter position, or null if the parameter is not a positional parameter.
- Returns:
- position of parameter
- Since:
- JPA 2.0