| /* |
| * Copyright (c) 2006, 2021 Oracle and/or its affiliates. All rights reserved. |
| * |
| * This program and the accompanying materials are made available under the |
| * terms of the Eclipse Public License v. 2.0 which is available at |
| * http://www.eclipse.org/legal/epl-2.0, |
| * or the Eclipse Distribution License v. 1.0 which is available at |
| * http://www.eclipse.org/org/documents/edl-v10.php. |
| * |
| * SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause |
| */ |
| |
| // Contributors: |
| // Oracle - initial API and implementation |
| // |
| package org.eclipse.persistence.jpa.jpql.tools.resolver; |
| |
| import org.eclipse.persistence.jpa.jpql.tools.TypeHelper; |
| import org.eclipse.persistence.jpa.jpql.tools.spi.IType; |
| import org.eclipse.persistence.jpa.jpql.tools.spi.ITypeDeclaration; |
| |
| /** |
| * This {@link Resolver} is responsible to calculate the type based on the type of the state field. |
| * |
| * @version 2.5 |
| * @since 2.3 |
| * @author Pascal Filion |
| */ |
| public class SumFunctionResolver extends Resolver { |
| |
| /** |
| * Creates a new <code>SumFunctionResolver</code>. |
| * |
| * @param parent The parent {@link Resolver}, which is never <code>null</code> |
| */ |
| public SumFunctionResolver(Resolver parent) { |
| super(parent); |
| } |
| |
| @Override |
| protected IType buildType() { |
| |
| IType type = getTypeDeclaration().getType(); |
| TypeHelper helper = getTypeHelper(); |
| |
| // Integral types: int/Integer, long/Long => the result is a Long |
| if (helper.isIntegralType(type)) { |
| return helper.longType(); |
| } |
| |
| // Floating types: float/Float, double/Double => the result is a Double |
| if (helper.isFloatingType(type)) { |
| return helper.doubleType(); |
| } |
| |
| // BigInteger, the result is the same |
| IType bigIntegerType = helper.bigInteger(); |
| |
| if (type.equals(bigIntegerType)) { |
| return bigIntegerType; |
| } |
| |
| // BigDecimal, the result is the same |
| IType bigDecimalType = helper.bigDecimal(); |
| |
| if (type.equals(bigDecimalType)) { |
| return bigDecimalType; |
| } |
| |
| // Anything else is an invalid type |
| return helper.objectType(); |
| } |
| |
| @Override |
| protected ITypeDeclaration buildTypeDeclaration() { |
| return getParentTypeDeclaration(); |
| } |
| } |