Examples of org.eclipse.persistence.jpa.jpql.tools.model.query.OrderByItemStateObject

org.eclipse.persistence.jpa.jpql.tools.model.query.OrderByItemStateObject

An ORDER BY item must be one of the following:

A {@link StateFieldPathExpressionStateObject state_field_path_expression} that evaluates toan orderable state field of an entity or embeddable class abstract schema type designated in the SELECT clause by one of the following:
- A general_identification_variable
- A single_valued_object_path_expression
A {@link StateFieldPathExpressionStateObject state_field_path_expression} that evaluates tothe same state field of the same entity or embeddable abstract schema type as a {@link StateFieldPathExpressionStateObject state_field_path_expression} in the SELECT clause
A {@link ResultVariableStateObject result_variable} that refers to an orderable item in theSELECT clause for which the same {@link ResultVariableStateObject result_variable}has been specified. This may be the result of an aggregate_expression, a scalar_expression, or a {@link StateFieldPathExpressionStateObject state_field_path_expression} in theSELECT clause.

The keyword ASC specifies that ascending ordering be used for the associated ORDER BY item; the keyword DESC specifies that descending ordering be used. Ascending ordering is the default.

JPA 1.0:

BNF: orderby_item ::= state_field_path_expression [ ASC | DESC ]

JPA 2.0

BNF: orderby_item ::= state_field_path_expression | result_variable [ ASC | DESC ]

@see OrderByItem @version 2.4 @since 2.4 @author Pascal Filion

    @Override
    public void visit(OrderByItem expression) {


      OrderByClauseStateObject orderByClause = stateObject.getOrderByClause();


      OrderByItemStateObject orderByItem = orderByClause.addItem(expression.getOrdering());
      orderByItem.setExpression(expression);


      expression.getExpression().accept(BasicStateObjectBuilder.this);
      orderByItem.setStateObject(BasicStateObjectBuilder.this.stateObject);
    }

  @Override
  public final void visit(OrderByItem expression) {


    OrderByClauseStateObject orderByClause = (OrderByClauseStateObject) stateObject;


    OrderByItemStateObject orderByItem = orderByClause.addItem(expression.getOrdering());
    orderByItem.setExpression(expression);


    expression.getExpression().accept(this);
    orderByItem.setStateObject(stateObject);
  }

Examples of org.eclipse.persistence.jpa.jpql.tools.model.query.OrderByItemStateObject

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