| /* |
| * Copyright (c) 1998, 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 from Oracle TopLink |
| package org.eclipse.persistence.internal.jpa.parsing; |
| |
| import java.sql.Date; |
| import java.sql.Time; |
| import java.sql.Timestamp; |
| |
| import org.eclipse.persistence.queries.ObjectLevelReadQuery; |
| import org.eclipse.persistence.queries.ReportQuery; |
| import org.eclipse.persistence.expressions.*; |
| |
| /** |
| * INTERNAL |
| * <p><b>Purpose</b>: Represent a date function: CURRENT_DATE, CURRENT_TIME, |
| * CURRENT_TIMESTAMP. |
| * <p><b>Responsibilities</b>:<ul> |
| * <li> Generate the correct expression for the date function |
| * </ul> |
| */ |
| public class DateFunctionNode extends FunctionalExpressionNode { |
| |
| private Class<?> type; |
| |
| /** |
| * DateFunctionNode constructor. |
| */ |
| public DateFunctionNode() { |
| super(); |
| } |
| |
| /** |
| * INTERNAL |
| * Apply this node to the passed query |
| */ |
| @Override |
| public void applyToQuery(ObjectLevelReadQuery theQuery, GenerationContext context) { |
| if (theQuery.isReportQuery()){ |
| ReportQuery reportQuery = (ReportQuery)theQuery; |
| reportQuery.addAttribute("date", generateExpression(context), type); |
| } |
| } |
| |
| /** |
| * INTERNAL |
| * Validate node and calculate its type. |
| */ |
| @Override |
| public void validate(ParseTreeContext context) { |
| setType(type); |
| } |
| |
| /** |
| * INTERNAL |
| * Generate the EclipseLink expression for this node |
| */ |
| @Override |
| public Expression generateExpression(GenerationContext context) { |
| Expression expr = context.getBaseExpression(); |
| if (expr == null) { |
| expr = new ExpressionBuilder(); |
| } |
| Expression result = null; |
| if (type == Date.class) { |
| result = expr.currentDateDate(); |
| } else if (type == Time.class) { |
| result = expr.currentTime(); |
| } else if (type == Timestamp.class) { |
| result = expr.currentDate(); |
| } |
| return result; |
| } |
| |
| /** */ |
| public void useCurrentDate() { |
| type = Date.class; |
| } |
| |
| /** */ |
| public void useCurrentTime() { |
| type = Time.class; |
| } |
| |
| /** */ |
| public void useCurrentTimestamp() { |
| type = Timestamp.class; |
| } |
| |
| } |