/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.cloudera.sqoop.lib;
import java.io.IOException;
import java.io.InputStream;
import java.io.Reader;
import java.sql.ResultSet;
import java.sql.SQLException;
import com.cloudera.sqoop.testutil.BaseSqoopTestCase;
import com.cloudera.sqoop.testutil.CommonArgs;
import junit.framework.TestCase;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import com.cloudera.sqoop.testutil.MockResultSet;
/**
* Test deserialization of ClobRef and BlobRef fields.
*/
public class TestLargeObjectLoader extends TestCase {
protected Configuration conf;
protected LargeObjectLoader loader;
protected Path outDir;
public void setUp() throws IOException, InterruptedException {
conf = new Configuration();
if (!BaseSqoopTestCase.isOnPhysicalCluster()) {
conf.set(CommonArgs.FS_DEFAULT_NAME, CommonArgs.LOCAL_FS);
}
String tmpDir = System.getProperty("test.build.data", "/tmp/");
this.outDir = new Path(new Path(tmpDir), "testLobLoader");
FileSystem fs = FileSystem.get(conf);
if (fs.exists(outDir)) {
fs.delete(outDir, true);
}
fs.mkdirs(outDir);
loader = new LargeObjectLoader(conf, outDir);
}
public void testReadClobRef()
throws IOException, InterruptedException, SQLException {
// This should give us an inline CLOB.
ResultSet resultSet = new MockResultSet();
ClobRef clob = loader.readClobRef(0, resultSet);
assertNotNull(clob);
assertFalse(clob.isExternal());
assertEquals(MockResultSet.CLOB_DATA, clob.toString());
// LOBs bigger than 4 bytes are now external.
conf.setLong(LargeObjectLoader.MAX_INLINE_LOB_LEN_KEY, 4);
clob = loader.readClobRef(0, resultSet);
assertNotNull(clob);
assertTrue(clob.isExternal());
loader.close();
Reader r = clob.getDataStream(conf, outDir);
char [] buf = new char[4096];
int chars = r.read(buf, 0, 4096);
r.close();
String str = new String(buf, 0, chars);
assertEquals(MockResultSet.CLOB_DATA, str);
}
public void testReadBlobRef()
throws IOException, InterruptedException, SQLException {
// This should give us an inline BLOB.
ResultSet resultSet = new MockResultSet();
BlobRef blob = loader.readBlobRef(0, resultSet);
assertNotNull(blob);
assertFalse(blob.isExternal());
byte [] data = blob.getData();
byte [] blobData = MockResultSet.blobData();
assertEquals(blobData.length, data.length);
for (int i = 0; i < data.length; i++) {
assertEquals(blobData[i], data[i]);
}
// LOBs bigger than 4 bytes are now external.
conf.setLong(LargeObjectLoader.MAX_INLINE_LOB_LEN_KEY, 4);
blob = loader.readBlobRef(0, resultSet);
assertNotNull(blob);
assertTrue(blob.isExternal());
loader.close();
InputStream is = blob.getDataStream(conf, outDir);
byte [] buf = new byte[4096];
int bytes = is.read(buf, 0, 4096);
is.close();
assertEquals(blobData.length, bytes);
for (int i = 0; i < bytes; i++) {
assertEquals(blobData[i], buf[i]);
}
}
}