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* to you under the Apache License, Version 2.0 (the
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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.di.Inject;
import org.apache.cayenne.query.SelectQuery;
import org.apache.cayenne.testdo.lob.ClobTestEntity;
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 DataContextClobIT extends ServerCase {
@Inject
private DataContext context;
@Inject
private DataContext context2;
@Inject
private DataContext context3;
@Inject
private UnitDbAdapter accessStackAdapter;
private boolean skipTests() {
return !accessStackAdapter.supportsLobs();
}
private boolean skipEmptyLOBTests() {
return !accessStackAdapter.handlesNullVsEmptyLOBs();
}
@Test
public void testEmptyClob() throws Exception {
if (skipEmptyLOBTests()) {
return;
}
runWithClobSize(0);
}
@Test
public void test5ByteClob() throws Exception {
if (skipTests()) {
return;
}
runWithClobSize(5);
}
@Test
public void test5KByteClob() throws Exception {
if (skipTests()) {
return;
}
runWithClobSize(5 * 1024);
}
@Test
public void test1MBClob() throws Exception {
if (skipTests()) {
return;
}
runWithClobSize(1024 * 1024);
}
@Test
public void testNullClob() throws Exception {
if (skipTests()) {
return;
}
// insert new clob
context.newObject(ClobTestEntity.class);
context.commitChanges();
// read the CLOB in the new context
List<?> objects2 = context2.performQuery(new SelectQuery(ClobTestEntity.class));
assertEquals(1, objects2.size());
ClobTestEntity clobObj2 = (ClobTestEntity) objects2.get(0);
assertNull("Expected null, got: '" + clobObj2.getClobCol() + "'", clobObj2
.getClobCol());
// update and save Clob
clobObj2.setClobCol("updated rather small clob...");
context2.commitChanges();
// read into yet another context and check for changes
List<?> objects3 = context3.performQuery(new SelectQuery(ClobTestEntity.class));
assertEquals(1, objects3.size());
ClobTestEntity clobObj3 = (ClobTestEntity) objects3.get(0);
assertEquals(clobObj2.getClobCol(), clobObj3.getClobCol());
}
protected void runWithClobSize(int sizeBytes) throws Exception {
// insert new clob
ClobTestEntity clobObj1 = context.newObject(ClobTestEntity.class);
// init CLOB of a specified size
if (sizeBytes == 0) {
clobObj1.setClobCol("");
}
else {
byte[] bytes = new byte[sizeBytes];
for (int i = 0; i < sizeBytes; i++) {
bytes[i] = (byte) (65 + (50 + i) % 50);
}
clobObj1.setClobCol(new String(bytes));
}
context.commitChanges();
// read the CLOB in the new context
List<?> objects2 = context2.performQuery(new SelectQuery(ClobTestEntity.class));
assertEquals(1, objects2.size());
ClobTestEntity clobObj2 = (ClobTestEntity) objects2.get(0);
assertEquals(clobObj1.getClobCol(), clobObj2.getClobCol());
// update and save Clob
clobObj2.setClobCol("updated rather small clob...");
context2.commitChanges();
// read into yet another context and check for changes
List<?> objects3 = context3.performQuery(new SelectQuery(ClobTestEntity.class));
assertEquals(1, objects3.size());
ClobTestEntity clobObj3 = (ClobTestEntity) objects3.get(0);
assertEquals(clobObj2.getClobCol(), clobObj3.getClobCol());
}
}