| /* |
| * Copyright (c) 1998, 2020 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 from Oracle TopLink |
| package org.eclipse.persistence.internal.jpa.parsing; |
| |
| /** |
| * INTERNAL |
| * <p><b>Purpose</b>: Represent a MOD |
| * <p><b>Responsibilities</b>:<ul> |
| * <li> Answer the correct expression for a MOD |
| * <li> Maintain the parts of a MOD statement |
| * |
| * e.g. |
| * SELECT ... FROM ... WHERE MOD(emp.salary, 2) > 1000 |
| * </ul> |
| * @author Jon Driscoll and Joel Lucuik |
| * @since TopLink 4.0 |
| */ |
| import org.eclipse.persistence.expressions.*; |
| import org.eclipse.persistence.exceptions.JPQLException; |
| |
| public class ModNode extends ArithmeticFunctionNode { |
| |
| private Node denominator = null; |
| |
| /** |
| * INTERNAL |
| * Check the child nodes for an unqualified field access and if so, |
| * replace it by a qualified field access. |
| */ |
| @Override |
| public Node qualifyAttributeAccess(ParseTreeContext context) { |
| if (left != null) { |
| left = left.qualifyAttributeAccess(context); |
| } |
| if (denominator != null) { |
| denominator = denominator.qualifyAttributeAccess(context); |
| } |
| return this; |
| } |
| |
| /** |
| * INTERNAL |
| * Validate node and calculate its type. |
| */ |
| @Override |
| public void validate(ParseTreeContext context) { |
| TypeHelper typeHelper = context.getTypeHelper(); |
| if (left != null) { |
| left.validate(context); |
| left.validateParameter(context, typeHelper.getIntType()); |
| |
| Object type = left.getType(); |
| if (!typeHelper.isIntegralType(type)) |
| throw JPQLException.invalidFunctionArgument( |
| context.getQueryInfo(), left.getLine(), left.getColumn(), |
| "MOD", left.getAsString(), "integral type"); |
| } |
| |
| if (denominator != null) { |
| denominator.validate(context); |
| denominator.validateParameter(context, typeHelper.getIntType()); |
| |
| Object denominatorType = denominator.getType(); |
| if (!typeHelper.isIntegralType(denominatorType)) |
| throw JPQLException.invalidFunctionArgument( |
| context.getQueryInfo(), denominator.getLine(), denominator.getColumn(), |
| "MOD", denominator.getAsString(), "integral type"); |
| } |
| |
| setType(typeHelper.getIntType()); |
| } |
| |
| /** */ |
| @Override |
| public Expression generateExpression(GenerationContext context) { |
| return ExpressionMath.mod(getLeft().generateExpression(context), |
| getDenominator().generateExpression(context)); |
| } |
| |
| // Accessors |
| public Node getDenominator() { |
| return denominator; |
| } |
| |
| public void setDenominator(Node denominator) { |
| this.denominator = denominator; |
| } |
| } |