| /* |
| * 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.spi.IType; |
| import org.eclipse.persistence.jpa.jpql.tools.spi.ITypeDeclaration; |
| |
| /** |
| * This {@link Resolver} is responsible to calculate the {@link IType} based on the type of the |
| * <b>ABS</b> expression. The valid type is a <code>Number</code> type. |
| * <p> |
| * The <b>ABS</b> function takes a numeric argument and returns a number (integer, float, or double) |
| * of the same type as the argument to the function. |
| * |
| * @version 2.5 |
| * @since 2.3 |
| * @author Pascal Filion |
| */ |
| public class AbsFunctionResolver extends Resolver { |
| |
| /** |
| * Creates a new <code>AbsFunctionResolver</code>. |
| * |
| * @param parent The parent {@link Resolver}, which is never <code>null</code> |
| */ |
| public AbsFunctionResolver(Resolver parent) { |
| super(parent); |
| } |
| |
| @Override |
| protected IType buildType() { |
| |
| IType type = getParentType(); |
| |
| // Anything else is an invalid type |
| if (!getTypeHelper().isNumericType(type)) { |
| type = getTypeHelper().objectType(); |
| } |
| |
| return type; |
| } |
| |
| @Override |
| protected ITypeDeclaration buildTypeDeclaration() { |
| return getParentTypeDeclaration(); |
| } |
| } |