| /* |
| * Copyright (c) 2006, 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 |
| // |
| package org.eclipse.persistence.jpa.tests.jpql.parser; |
| |
| import org.junit.Test; |
| import static org.eclipse.persistence.jpa.tests.jpql.parser.JPQLParserTester.*; |
| |
| @SuppressWarnings("nls") |
| public final class ExistsExpressionTest extends JPQLParserTest { |
| |
| @Test |
| public void test_JPQLQuery_1() { |
| |
| String query = "SELECT e FROM Employee e WHERE EXISTS (SELECT e FROM Employee e)"; |
| |
| SelectStatementTester selectStatement = selectStatement( |
| select(variable("e")), |
| from("Employee", "e"), |
| where(exists( |
| subquery( |
| subSelect(variable("e")), |
| subFrom("Employee", "e") |
| ) |
| )) |
| ); |
| |
| testQuery(query, selectStatement); |
| } |
| |
| @Test |
| public void test_JPQLQuery_2() { |
| |
| String query = "SELECT e FROM Employee e WHERE NOT EXISTS (SELECT e FROM Employee e)"; |
| |
| SelectStatementTester selectStatement = selectStatement( |
| select(variable("e")), |
| from("Employee", "e"), |
| where(notExists( |
| subquery( |
| subSelect(variable("e")), |
| subFrom("Employee", "e") |
| ) |
| )) |
| ); |
| |
| testQuery(query, selectStatement); |
| } |
| |
| @Test |
| public void test_JPQLQuery_3() { |
| |
| String query = "SELECT e FROM Employee e WHERE EXISTS"; |
| |
| ExistsExpressionTester exists = exists(nullExpression()); |
| exists.hasLeftParenthesis = false; |
| exists.hasRightParenthesis = false; |
| |
| SelectStatementTester selectStatement = selectStatement( |
| select(variable("e")), |
| from("Employee", "e"), |
| where(exists) |
| ); |
| |
| testInvalidQuery(query, selectStatement); |
| } |
| |
| @Test |
| public void test_JPQLQuery_4() { |
| |
| String query = "SELECT e FROM Employee e WHERE EXISTS("; |
| |
| ExistsExpressionTester exists = exists(nullExpression()); |
| exists.hasRightParenthesis = false; |
| |
| SelectStatementTester selectStatement = selectStatement( |
| select(variable("e")), |
| from("Employee", "e"), |
| where(exists) |
| ); |
| |
| testInvalidQuery(query, selectStatement); |
| } |
| |
| @Test |
| public void test_JPQLQuery_5() { |
| |
| String query = "SELECT e FROM Employee e WHERE EXISTS()"; |
| |
| SelectStatementTester selectStatement = selectStatement( |
| select(variable("e")), |
| from("Employee", "e"), |
| where(exists(nullExpression())) |
| ); |
| |
| testInvalidQuery(query, selectStatement); |
| } |
| |
| @Test |
| public void test_JPQLQuery_6() { |
| |
| String query = "SELECT e FROM Employee e WHERE EXISTS GROUP BY e.name"; |
| |
| ExistsExpressionTester exists = exists(nullExpression()); |
| exists.hasLeftParenthesis = false; |
| exists.hasRightParenthesis = false; |
| |
| SelectStatementTester selectStatement = selectStatement( |
| select(variable("e")), |
| from("Employee", "e"), |
| where(exists), |
| groupBy(path("e.name")) |
| ); |
| |
| testInvalidQuery(query, selectStatement); |
| } |
| |
| @Test |
| public void test_JPQLQuery_7() { |
| |
| String query = "SELECT e FROM Employee e WHERE EXISTS( GROUP BY e.name"; |
| |
| ExistsExpressionTester exists = exists(nullExpression()); |
| exists.hasLeftParenthesis = true; |
| exists.hasRightParenthesis = false; |
| |
| SelectStatementTester selectStatement = selectStatement( |
| select(variable("e")), |
| from("Employee", "e"), |
| where(exists), |
| groupBy(path("e.name")) |
| ); |
| |
| testInvalidQuery(query, selectStatement); |
| } |
| |
| @Test |
| public void test_JPQLQuery_8() { |
| |
| String query = "SELECT e FROM Employee e WHERE EXISTS (SELECT e FROM Employee e WHERE e.name = 'Pascal' GROUP BY e.name HAVING e.age > 21)"; |
| |
| ExistsExpressionTester exists = exists(subquery( |
| subSelect(variable("e")), |
| subFrom("Employee", "e"), |
| where(path("e.name").equal(string("'Pascal'"))), |
| groupBy(path("e.name")), |
| having(path("e.age").greaterThan(numeric(21))) |
| )); |
| |
| SelectStatementTester selectStatement = selectStatement( |
| select(variable("e")), |
| from("Employee", "e"), |
| where(exists) |
| ); |
| |
| testQuery(query, selectStatement); |
| } |
| } |