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* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
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*
* http://www.apache.org/licenses/LICENSE-2.0
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package org.apache.cayenne.access;
import org.apache.cayenne.access.types.ByteArrayTypeTest;
import org.apache.cayenne.di.Inject;
import org.apache.cayenne.query.SelectQuery;
import org.apache.cayenne.testdo.lob.BlobTestEntity;
import org.apache.cayenne.unit.UnitDbAdapter;
import org.apache.cayenne.unit.di.server.CayenneProjects;
import org.apache.cayenne.unit.di.server.ServerCase;
import org.apache.cayenne.unit.di.server.UseServerRuntime;
import org.junit.Test;
import java.util.List;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNull;
@UseServerRuntime(CayenneProjects.LOB_PROJECT)
public class DataContextBlobIT extends ServerCase {
@Inject
private DataContext context;
@Inject
private DataContext context2;
@Inject
private DataContext context3;
@Inject
private UnitDbAdapter accessStackAdapter;
protected boolean skipTests() {
return !accessStackAdapter.supportsLobs();
}
protected boolean skipEmptyLOBTests() {
return !accessStackAdapter.handlesNullVsEmptyLOBs();
}
@Test
public void testManyBlobsInOneTX() throws Exception {
if (skipTests()) {
return;
}
for (int i = 0; i < 3; i++) {
BlobTestEntity b = context.newObject(BlobTestEntity.class);
byte[] bytes = new byte[1024];
for (int j = 0; j < 1024; j++) {
bytes[j] = (byte) (65 + (50 + j) % 50);
}
b.setBlobCol(bytes);
context.commitChanges();
}
// read the CLOB in the new context
List<BlobTestEntity> objects2 = context2.select(new SelectQuery<BlobTestEntity>(BlobTestEntity.class));
assertEquals(3, objects2.size());
}
@Test
public void testEmptyBlob() throws Exception {
if (skipTests()) {
return;
}
if (skipEmptyLOBTests()) {
return;
}
runWithBlobSize(0);
}
@Test
public void test5ByteBlob() throws Exception {
if (skipTests()) {
return;
}
runWithBlobSize(5);
}
@Test
public void test5KByteBlob() throws Exception {
if (skipTests()) {
return;
}
runWithBlobSize(5 * 1024);
}
@Test
public void test1MBBlob() throws Exception {
if (skipTests()) {
return;
}
runWithBlobSize(1024 * 1024);
}
@Test
public void testNullBlob() throws Exception {
if (skipTests()) {
return;
}
byte[] bytes2 = {'a', 'b', 'c', 'd'};
// insert new blob
context.newObject(BlobTestEntity.class);
context.commitChanges();
// read the BLOB in the new context
List<?> objects2 = context2.performQuery(new SelectQuery(BlobTestEntity.class));
assertEquals(1, objects2.size());
BlobTestEntity blobObj2 = (BlobTestEntity) objects2.get(0);
assertNull(blobObj2.getBlobCol());
// update and save Blob
blobObj2.setBlobCol(bytes2);
context2.commitChanges();
// read into yet another context and check for changes
List<?> objects3 = context3.performQuery(new SelectQuery(BlobTestEntity.class));
assertEquals(1, objects3.size());
BlobTestEntity blobObj3 = (BlobTestEntity) objects3.get(0);
ByteArrayTypeTest.assertByteArraysEqual(blobObj2.getBlobCol(), blobObj3
.getBlobCol());
}
protected void runWithBlobSize(int sizeBytes) throws Exception {
// insert new clob
BlobTestEntity blobObj1 = context.newObject(BlobTestEntity.class);
// init BLOB of a specified size
byte[] bytes = new byte[sizeBytes];
for (int i = 0; i < sizeBytes; i++) {
bytes[i] = (byte) (65 + (50 + i) % 50);
}
blobObj1.setBlobCol(bytes);
context.commitChanges();
// read the CLOB in the new context
List<?> objects2 = context2.performQuery(new SelectQuery(BlobTestEntity.class));
assertEquals(1, objects2.size());
BlobTestEntity blobObj2 = (BlobTestEntity) objects2.get(0);
ByteArrayTypeTest.assertByteArraysEqual(blobObj1.getBlobCol(), blobObj2
.getBlobCol());
// update and save Blob
blobObj2.setBlobCol(new byte[] {
'1', '2'
});
context2.commitChanges();
// read into yet another context and check for changes
List<?> objects3 = context3.performQuery(new SelectQuery(BlobTestEntity.class));
assertEquals(1, objects3.size());
BlobTestEntity blobObj3 = (BlobTestEntity) objects3.get(0);
ByteArrayTypeTest.assertByteArraysEqual(blobObj2.getBlobCol(), blobObj3
.getBlobCol());
}
}