/******************************************************************************* | |
* Copyright (c) 1998, 2013 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 v1.0 and Eclipse Distribution License v. 1.0 | |
* which accompanies this distribution. | |
* The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html | |
* and the Eclipse Distribution License is available at | |
* http://www.eclipse.org/org/documents/edl-v10.php. | |
* | |
* Contributors: | |
* Oracle - initial API and implementation from Oracle TopLink | |
******************************************************************************/ | |
package org.eclipse.persistence.testing.tests.queries; | |
import java.util.*; | |
import org.eclipse.persistence.testing.framework.*; | |
import org.eclipse.persistence.queries.*; | |
import org.eclipse.persistence.expressions.*; | |
import org.eclipse.persistence.internal.sessions.AbstractSession; | |
/** | |
* Test the cursored stream feature by performing a cursor read on the database | |
* and comparing the contents to a normal query read. | |
*/ | |
public class | |
CursoredStreamTest extends AutoVerifyTestCase { | |
protected int size; | |
protected Vector normalQueryObjects; | |
protected Vector cursoredQueryObjects; | |
protected Class referenceClass; | |
protected Expression joinExpression; | |
public CursoredStreamTest(Class referenceClass, Expression expression) { | |
setReferenceClass(referenceClass); | |
setName(getName() + "(" + referenceClass + ")"); | |
setDescription("This test verifies that the number of objects read in using a cursored stream" + | |
" 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; | |
} | |
protected void setup() { | |
setNormalQueryObjects(getSession().readAllObjects(getReferenceClass(), joinExpression)); | |
getSession().getIdentityMapAccessor().initializeAllIdentityMaps(); | |
} | |
public void test() { | |
ReadAllQuery query = new ReadAllQuery(); | |
CursoredStream stream = null; | |
try { | |
Object databaseObject; | |
cursoredQueryObjects = new Vector(); | |
query.setReferenceClass(getReferenceClass()); | |
query.setSelectionCriteria(joinExpression); | |
query.useCursoredStream(); | |
stream = (CursoredStream)getSession().executeQuery(query); | |
// Test dual cursors and read(int) | |
CursoredStream stream2 = (CursoredStream)getSession().executeQuery(query); | |
try { | |
stream2.read(5); | |
} catch (org.eclipse.persistence.exceptions.QueryException ex) { | |
} // ignore at end | |
setSize(stream2.size()); | |
stream2.close(); | |
while (!stream.atEnd()) { | |
databaseObject = stream.read(); | |
getCursoredQueryObjects().addElement(databaseObject); | |
stream.releasePrevious(); | |
} | |
} finally { | |
if (stream != null) { | |
stream.close(); | |
} | |
} | |
} | |
/** | |
* Verify if number of query objects matches number of cursor objects | |
*/ | |
protected void verify() { | |
if (getNormalQueryObjects().size() != getCursoredQueryObjects().size()) { | |
throw new TestErrorException("The number of streamed objects does not match the number of objects stored on the database. Expected: " + | |
getNormalQueryObjects().size() + ". Got: " + | |
getCursoredQueryObjects().size()); | |
} | |
if (getNormalQueryObjects().size() == 0) { | |
throw new TestWarningException("no object with the specified selection criteria was found "); | |
} | |
if (getSize() != getNormalQueryObjects().size()) { | |
throw new TestErrorException("The cursored stream size function is not working properly"); | |
} | |
int first = 0; | |
int last = getNormalQueryObjects().size() - 1; | |
if (!((AbstractSession)getSession()).compareObjects(getCursoredQueryObjects().elementAt(first), | |
getNormalQueryObjects().elementAt(first))) { | |
throw new TestErrorException("The First Objects do not match"); | |
} | |
if (!((AbstractSession)getSession()).compareObjects(getCursoredQueryObjects().elementAt(last), | |
getNormalQueryObjects().elementAt(last))) { | |
throw new TestErrorException("The Last Objects do not match"); | |
} | |
} | |
} |