JPA Interface

ParameterExpression

Type Parameters:
<T> - the type of the parameter expression
Super Interfaces:
Expression<T>, Parameter<T>, Selection<T>, TupleElement<T>
Type of criteria query parameter expressions.
Since:
JPA 2.0

Public Methods

Expression<X> as(Class<X> type)
Perform a typecast upon the expression, returning a new expression object.
This method does not cause type conversion: the runtime type is not changed. Warning: may result in a runtime failure.
Parameters:
type - intended type of the expression
Return:
new expression of the given type
Inherited from:
Expression<T>
Since:
JPA 2.0
String getName()
Return the parameter name, or null if the parameter is not a named parameter or no name has been assigned.
Return:
parameter name
Inherited from:
Parameter<T>
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.
Return:
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
Inherited from:
Parameter<T>
Since:
JPA 2.0
Integer getPosition()
Return the parameter position, or null if the parameter is not a positional parameter.
Return:
position of parameter
Inherited from:
Parameter<T>
Since:
JPA 2.0
Predicate in(Collection<?> values)
Create a predicate to test whether the expression is a member of the collection.
Parameters:
values - collection of values to be tested against
Return:
predicate testing for membership
Inherited from:
Expression<T>
Since:
JPA 2.0
Predicate in(Expression<?>... values)
Create a predicate to test whether the expression is a member of the argument list.
Parameters:
values - expressions to be tested against
Return:
predicate testing for membership
Inherited from:
Expression<T>
Since:
JPA 2.0
Predicate in(Expression<Collection<?>> values)
Create a predicate to test whether the expression is a member of the collection.
Parameters:
values - expression corresponding to collection to be tested against
Return:
predicate testing for membership
Inherited from:
Expression<T>
Since:
JPA 2.0
Predicate in(Object... values)
Create a predicate to test whether the expression is a member of the argument list.
Parameters:
values - values to be tested against
Return:
predicate testing for membership
Inherited from:
Expression<T>
Since:
JPA 2.0
Predicate isNotNull()
Create a predicate to test whether the expression is not null.
Return:
predicate testing whether the expression is not null
Inherited from:
Expression<T>
Since:
JPA 2.0
Predicate isNull()
Create a predicate to test whether the expression is null.
Return:
predicate testing whether the expression is null
Inherited from:
Expression<T>
Since:
JPA 2.0