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/*
Copyright (c) 2007 Health Market Science, Inc.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
USA
You can contact Health Market Science at info@healthmarketscience.com
or at the following address:
Health Market Science
2700 Horizon Drive
Suite 200
King of Prussia, PA 19406
*/
package com.healthmarketscience.jackcess;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import junit.framework.TestCase;
/**
* @author Tim McCune
*/
public class TableTest extends TestCase {
private final PageChannel _pageChannel = new PageChannel(true);
private List<Column> _columns = new ArrayList<Column>();
private Table _testTable;
public TableTest(String name) {
super(name);
}
public void testCreateRow() throws Exception {
Column col = newTestColumn();
col.setType(DataType.INT);
_columns.add(col);
col = newTestColumn();
col.setType(DataType.TEXT);
_columns.add(col);
col = newTestColumn();
col.setType(DataType.TEXT);
_columns.add(col);
newTestTable();
int colCount = _columns.size();
ByteBuffer buffer = createRow(9, "Tim", "McCune");
assertEquals((short) colCount, buffer.getShort());
assertEquals((short) 9, buffer.getShort());
assertEquals((byte) 'T', buffer.get());
assertEquals((short) 22, buffer.getShort(22));
assertEquals((short) 10, buffer.getShort(24));
assertEquals((short) 4, buffer.getShort(26));
assertEquals((short) 2, buffer.getShort(28));
assertEquals((byte) 7, buffer.get(30));
}
public void testUnicodeCompression() throws Exception {
Column col = newTestColumn();
col = newTestColumn();
col.setType(DataType.TEXT);
_columns.add(col);
col = newTestColumn();
col.setType(DataType.MEMO);
_columns.add(col);
newTestTable();
String small = "this is a string";
String smallNotAscii = "this is a string\0";
String large = DatabaseTest.createString(30);
String largeNotAscii = large + "\0";
ByteBuffer[] buf1 = encodeColumns(small, large);
ByteBuffer[] buf2 = encodeColumns(smallNotAscii, largeNotAscii);
for(Column tmp : _columns) {
tmp.setCompressedUnicode(true);
}
ByteBuffer[] bufCmp1 = encodeColumns(small, large);
ByteBuffer[] bufCmp2 = encodeColumns(smallNotAscii, largeNotAscii);
assertEquals(buf1[0].remaining(),
(bufCmp1[0].remaining() + small.length() - 2));
assertEquals(buf1[1].remaining(),
(bufCmp1[1].remaining() + large.length() - 2));
for(int i = 0; i < buf2.length; ++i) {
assertTrue(Arrays.equals(toBytes(buf2[i]), toBytes(bufCmp2[i])));
}
assertEquals(Arrays.asList(small, large),
Arrays.asList(decodeColumns(bufCmp1)));
assertEquals(Arrays.asList(smallNotAscii, largeNotAscii),
Arrays.asList(decodeColumns(bufCmp2)));
}
private ByteBuffer createRow(Object... row)
throws IOException
{
return _testTable.createRow(
row, _testTable.getFormat().MAX_ROW_SIZE,
_testTable.getPageChannel().createPageBuffer());
}
private ByteBuffer[] encodeColumns(Object... row)
throws IOException
{
ByteBuffer[] result = new ByteBuffer[_columns.size()];
for(int i = 0; i < _columns.size(); ++i) {
Column col = _columns.get(i);
result[i] = col.write(row[i], _testTable.getFormat().MAX_ROW_SIZE);
}
return result;
}
private Object[] decodeColumns(ByteBuffer[] buffers)
throws IOException
{
Object[] result = new Object[_columns.size()];
for(int i = 0; i < _columns.size(); ++i) {
Column col = _columns.get(i);
result[i] = col.read(toBytes(buffers[i]));
}
return result;
}
private static byte[] toBytes(ByteBuffer buffer) {
buffer.rewind();
byte[] b = new byte[buffer.remaining()];
buffer.get(b);
return b;
}
private Table newTestTable()
throws Exception
{
_testTable = new Table(true, _columns) {
@Override
public PageChannel getPageChannel() {
return _pageChannel;
}
@Override
public JetFormat getFormat() {
return JetFormat.VERSION_4;
}
};
return _testTable;
}
private Column newTestColumn() {
return new Column(true) {
@Override
public Table getTable() {
return _testTable;
}
};
}
}
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