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JPA Method in javax.persistence.Tuple X get (    TupleElement   tupleElement ) Get the value of the specified tuple element. Parameters: tupleElement - tuple element Return: value of tuple element Throws: IllegalArgumentException - if tuple element does not correspond to an element in the query result tuple Since: JPA 2.0

JPA Interface TupleElement Type Parameters: - the type of the element The TupleElement interface defines an element that is returned in a query result tuple. See Also: Tuple Since: JPA 2.0 Public Methods String getAlias () Return the alias assigned to the tuple element or null, if no alias

JPA Method in javax.persistence. TupleElement String getAlias () Return the alias assigned to the tuple element or null, if no alias has been assigned. Return: alias Since: JPA 2.0

JPA Method in javax.persistence. TupleElement Class getJavaType () Return the Java type of the tuple element. Return: the Java type of the tuple element Since: JPA 2.0

. See Also: TupleElement Since: JPA 2.0 Public Methods Object get (String alias) Get the value of the tuple ... result tuple or element cannot be assigned to the specified type Since: JPA 2.0 X get ( TupleElement   tupleElement ) Get the value of the specified tuple element. Parameters: tupleElement - tuple

: TupleElement The Selection interface defines an item that is to be returned in a query result. Since: JPA ... , if no alias has been assigned. Return: alias Inherited from: TupleElement Since: JPA 2.0 List ... of the tuple element. Return: the Java type of the tuple element Inherited from: TupleElement

JPA Interface SetJoin Type Parameters: - the source type of the join - the element type of the target Set Super Interfaces: Expression , FetchParent , From , Join , Path , PluralJoin , Selection , TupleElement The SetJoin interface is the type of the result of joining to a collection

JPA Interface In Super Interfaces: Expression , Predicate , Selection , TupleElement Interface used to build in predicates. Since: JPA 2.0 Public Methods Expression getExpression () Return the expression to be tested against the list of values. Return: expression Since: JPA 2.0 List getExpressions

JPA Interface Predicate Super Interfaces: Expression , Selection , TupleElement The type of a simple or compound predicate: a conjunction or disjunction of restrictions. A simple predicate is considered to be a conjunction with a single conjunct. Since: JPA 2.0 The Logical Operators in JPQL

JPA Interface PluralJoin Type Parameters: - the source type - the collection type - the element type of the collection Super Interfaces: Expression , FetchParent , From , Join , Path , Selection , TupleElement The PluralJoin interface defines functionality that is common to joins to all collection

JPA Interface SimpleCase Super Interfaces: Expression , Selection , TupleElement Interface used to build simple case expressions. Case conditions are evaluated in the order in which they are specified. Since: JPA 2.0 Public Methods Expression getExpression () Return the expression to be tested

JPA Interface CollectionJoin Type Parameters: - the source type of the join - the element type of the target Collection Super Interfaces: Expression , FetchParent , From , Join , Path , PluralJoin , Selection , TupleElement The CollectionJoin interface is the type of the result of joining

JPA Interface CompoundSelection Type Parameters: - the type of the selection item Super Interfaces: Selection , TupleElement The CompoundSelection interface defines a compound selection item (tuple, array, or result of constructor). Since: JPA 2.0 Public Methods Selection alias (String name

JPA Interface Expression Type Parameters: - the type of the expression Super Interfaces: Selection , TupleElement Type for query expressions. Since: JPA 2.0 The JPA Query Expressions (JPQL / Criteria) article explains how to use Expression . Public Methods Expression as (Class  type) Perform

JPA Interface Case Super Interfaces: Expression , Selection , TupleElement Interface used to build general case expressions. Case conditions are evaluated in the order in which they are specified. Since: JPA 2.0 Public Methods Expression otherwise ( Expression  result) Add an "else" clause

JPA Interface ParameterExpression Type Parameters: - the type of the parameter expression Super Interfaces: Expression , Parameter , Selection , TupleElement Type of criteria query parameter expressions. Since: JPA 2.0 Public Methods Expression as (Class  type) Perform a typecast

JPA Interface Coalesce Super Interfaces: Expression , Selection , TupleElement Interface used to build coalesce expressions. A coalesce expression is equivalent to a case expression that returns null if all its arguments evaluate to null, and the value of its first non-null argument

JPA Interface ListJoin Type Parameters: - the source type of the join - the element type of the target List Super Interfaces: Expression , FetchParent , From , Join , Path , PluralJoin , Selection , TupleElement The ListJoin interface is the type of the result of joining to a collection

JPA Interface MapJoin Type Parameters: - the source type of the join - the type of the target Map key - the type of the target Map value Super Interfaces: Expression , FetchParent , From , Join , Path , PluralJoin , Selection , TupleElement The MapJoin interface is the type of the result

JPA Interface Subquery Type Parameters: - the type of the selection item. Super Interfaces: AbstractQuery , CommonAbstractCriteria , Expression , Selection , TupleElement The Subquery interface defines functionality that is specific to subqueries. A subquery has an expression as its selection item

.get(1);   So it seems that Tuple.get chokes on Join, Root and probably other TupleElements ... to see it fixed, so Tuple.get would work with any TupleElement , be it Path, Join, Root, or ... . You can find it in attachment, and please note how all calls to Tuple.get( TupleElement ) fail