| /* |
| * 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.testing.tests.queries; |
| |
| import java.util.*; |
| |
| import org.eclipse.persistence.queries.*; |
| import org.eclipse.persistence.expressions.*; |
| |
| import org.eclipse.persistence.testing.framework.*; |
| |
| /** |
| * Test the scrollable cursor feature by performing a cursor read on the database |
| * and comparing the contents to a normal query read. |
| */ |
| public class ScrollableCursorTest extends TestCase { |
| protected int size; |
| protected Vector normalQueryObjects; |
| protected Vector cursoredQueryObjects; |
| protected Class<?> referenceClass; |
| protected Expression joinExpression; |
| protected boolean TYPE_SCROLL_INSENSITIVE_isSupported; |
| protected boolean CONCUR_UPDATABLE_isSupported; |
| |
| public ScrollableCursorTest(Class<?> referenceClass, Expression expression) { |
| setReferenceClass(referenceClass); |
| setName(getName() + "(" + referenceClass + ")"); |
| setDescription("This test verifies that the number of objects read in using a scrollable cursor" + |
| " matches the number of object read in using a normal query"); |
| joinExpression = expression; |
| } |
| |
| public Vector getCursoredQueryObjects() { |
| return cursoredQueryObjects; |
| } |
| |
| public Vector getNormalQueryObjects() { |
| return normalQueryObjects; |
| } |
| |
| public Class<?> getReferenceClass() { |
| return referenceClass; |
| } |
| |
| public int getSize() { |
| return size; |
| } |
| |
| public void setCursoredQueryObjects(Vector objects) { |
| cursoredQueryObjects = objects; |
| } |
| |
| public void setNormalQueryObjects(Vector objects) { |
| normalQueryObjects = objects; |
| } |
| |
| public void setReferenceClass(Class<?> aClass) { |
| referenceClass = aClass; |
| } |
| |
| public void setSize(int aSize) { |
| size = aSize; |
| } |
| |
| @Override |
| protected void setup() { |
| if (getSession().getPlatform().isDB2() || getSession().getPlatform().isAccess() || |
| getSession().getPlatform().isTimesTen() || getSession().getPlatform().isSymfoware() || |
| getSession().getPlatform().isHANA() || getSession().getPlatform().isPervasive()) { |
| throw new TestWarningException("ScrollableCursor is not supported on this platform."); |
| } |
| TYPE_SCROLL_INSENSITIVE_isSupported = true; |
| CONCUR_UPDATABLE_isSupported = true; |
| if(getSession().getPlatform().isSQLServer()) { |
| // In case either TYPE_SCROLL_INSENSITIVE or CONCUR_UPDATABLE used |
| // MS SQL Server Version: 9.00.2050; MS SQL Server 2005 JDBC Driver Version: 1.2.2828.100 throws exception: |
| // com.microsoft.sqlserver.jdbc.SQLServerException: The cursor type/concurrency combination is not supported. |
| TYPE_SCROLL_INSENSITIVE_isSupported = false; |
| CONCUR_UPDATABLE_isSupported = false; |
| } |
| |
| setNormalQueryObjects(getSession().readAllObjects(getReferenceClass(), joinExpression)); |
| getSession().getIdentityMapAccessor().initializeAllIdentityMaps(); |
| } |
| |
| @Override |
| public void test() { |
| |
| ReadAllQuery query = new ReadAllQuery(); |
| ScrollableCursor cursor = null; |
| |
| try { |
| Object databaseObject; |
| |
| cursoredQueryObjects = new Vector(); |
| |
| query.setReferenceClass(getReferenceClass()); |
| query.setSelectionCriteria(joinExpression); |
| if(TYPE_SCROLL_INSENSITIVE_isSupported && CONCUR_UPDATABLE_isSupported) { |
| query.useScrollableCursor(2); |
| } else { |
| ScrollableCursorPolicy policy = new ScrollableCursorPolicy(); |
| if(!TYPE_SCROLL_INSENSITIVE_isSupported) { |
| policy.setResultSetType(ScrollableCursorPolicy.TYPE_SCROLL_SENSITIVE); |
| } |
| if(!CONCUR_UPDATABLE_isSupported) { |
| policy.setResultSetConcurrency(ScrollableCursorPolicy.CONCUR_READ_ONLY); |
| } |
| policy.setPageSize(2); |
| query.useScrollableCursor(policy); |
| } |
| cursor = (ScrollableCursor)getSession().executeQuery(query); |
| |
| // Test dual cursors and read(int) |
| ScrollableCursor cursor2 = (ScrollableCursor)getSession().executeQuery(query); |
| try { |
| cursor2.next(5); |
| } catch (org.eclipse.persistence.exceptions.QueryException ex) { |
| } // ignore at end |
| setSize(cursor2.size()); |
| cursor2.close(); |
| while (cursor.hasNext()) { |
| databaseObject = cursor.next(); |
| getCursoredQueryObjects().addElement(databaseObject); |
| } |
| |
| // Test cursor policy |
| ReadAllQuery query3 = new ReadAllQuery(getReferenceClass()); |
| ScrollableCursorPolicy policy = new ScrollableCursorPolicy(); |
| policy.setResultSetType(ScrollableCursorPolicy.TYPE_SCROLL_SENSITIVE); |
| query3.useScrollableCursor(policy); |
| ScrollableCursor cursor3 = (ScrollableCursor)getSession().executeQuery(query3); |
| |
| } finally { |
| if (cursor != null) { |
| cursor.close(); |
| } |
| } |
| } |
| |
| /** |
| * Verify if number of query objects matches number of cursor objects |
| */ |
| @Override |
| protected void verify() { |
| if (getNormalQueryObjects().size() != getCursoredQueryObjects().size()) { |
| throw new TestErrorException("The number of streamed objects (" + getCursoredQueryObjects().size() + |
| ") does not match the number of objects stored on the database (" + |
| getNormalQueryObjects().size() + ") "); |
| } |
| |
| if (getSize() != getNormalQueryObjects().size()) |
| throw new TestErrorException("The cursored stream size function is not working properly"); |
| |
| } |
| |
| } |