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* regarding copyright ownership. Some portions may be licensed
* to Red Hat, Inc. under one or more contributor license agreements.
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA
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*/
package org.teiid.query.processor;
import static org.junit.Assert.*;
import java.util.Arrays;
import java.util.List;
import org.junit.Test;
import org.teiid.common.buffer.BlockedException;
import org.teiid.common.buffer.BufferManager;
import org.teiid.common.buffer.BufferManager.TupleSourceType;
import org.teiid.common.buffer.BufferManagerFactory;
import org.teiid.common.buffer.TupleBatch;
import org.teiid.common.buffer.TupleBuffer;
import org.teiid.core.TeiidComponentException;
import org.teiid.core.TeiidProcessingException;
import org.teiid.core.types.DataTypeManager;
import org.teiid.query.processor.relational.FakeRelationalNode;
import org.teiid.query.sql.symbol.ElementSymbol;
@SuppressWarnings("nls")
public class TestBatchIterator {
@Test public void testReset() throws Exception {
BatchIterator bi = new BatchIterator(new FakeRelationalNode(1, new List[] {
Arrays.asList(1),
Arrays.asList(1),
Arrays.asList(1)
}, 1));
BufferManager bm = BufferManagerFactory.getStandaloneBufferManager();
bi.setBuffer(bm.createTupleBuffer(Arrays.asList(new ElementSymbol("x", null, DataTypeManager.DefaultDataClasses.INTEGER)), "test", TupleSourceType.PROCESSOR), true); //$NON-NLS-1$
bi.mark();
bi.nextTuple();
bi.nextTuple();
bi.reset();
bi.nextTuple();
}
@Test public void testReset1() throws Exception {
BatchIterator bi = new BatchIterator(new FakeRelationalNode(1, new List[] {
Arrays.asList(1),
Arrays.asList(2),
Arrays.asList(3)
}, 2));
BufferManager bm = BufferManagerFactory.getStandaloneBufferManager();
TupleBuffer tb = bm.createTupleBuffer(Arrays.asList(new ElementSymbol("x", null, DataTypeManager.DefaultDataClasses.INTEGER)), "test", TupleSourceType.PROCESSOR);
bi.setBuffer(tb, true); //$NON-NLS-1$
bi.nextTuple();
bi.mark();
bi.nextTuple();
bi.reset();
assertEquals(2, bi.getCurrentIndex());
assertEquals(2, bi.nextTuple().get(0));
}
@Test public void testReset2() throws Exception {
BatchIterator bi = new BatchIterator(new FakeRelationalNode(1, new List[] {
Arrays.asList(1),
Arrays.asList(2),
}, 2));
BufferManager bm = BufferManagerFactory.getStandaloneBufferManager();
TupleBuffer tb = bm.createTupleBuffer(Arrays.asList(new ElementSymbol("x", null, DataTypeManager.DefaultDataClasses.INTEGER)), "test", TupleSourceType.PROCESSOR);
bi.setBuffer(tb, true); //$NON-NLS-1$
bi.hasNext();
bi.mark();
bi.nextTuple();
bi.nextTuple();
assertNull(bi.nextTuple());
bi.reset();
bi.hasNext();
assertEquals(1, bi.getCurrentIndex());
assertEquals(1, bi.nextTuple().get(0));
}
@Test public void testBatchReadDuringMark() throws Exception {
BatchIterator bi = new BatchIterator(new FakeRelationalNode(1, new List[] {
Arrays.asList(1),
Arrays.asList(1),
Arrays.asList(1),
Arrays.asList(1),
}, 2));
BufferManager bm = BufferManagerFactory.getStandaloneBufferManager();
bi.setBuffer(bm.createTupleBuffer(Arrays.asList(new ElementSymbol("x", null, DataTypeManager.DefaultDataClasses.INTEGER)), "test", TupleSourceType.PROCESSOR), true); //$NON-NLS-1$
bi.mark();
assertNotNull(bi.nextTuple());
assertNotNull(bi.nextTuple());
assertNotNull(bi.nextTuple());
bi.reset();
assertNotNull(bi.nextTuple());
assertNotNull(bi.nextTuple());
assertNotNull(bi.nextTuple());
assertNotNull(bi.nextTuple());
assertNull(bi.nextTuple());
}
@Test public void testDisableSave() throws Exception {
BatchIterator bi = new BatchIterator(new FakeRelationalNode(1, new List[] {
Arrays.asList(1),
Arrays.asList(1),
Arrays.asList(1),
Arrays.asList(1),
Arrays.asList(1),
Arrays.asList(1),
}, 2));
BufferManager bm = BufferManagerFactory.getStandaloneBufferManager();
TupleBuffer tb = bm.createTupleBuffer(Arrays.asList(new ElementSymbol("x", null, DataTypeManager.DefaultDataClasses.INTEGER)), "test", TupleSourceType.PROCESSOR);
bi.setBuffer(tb, false); //$NON-NLS-1$
bi.setPosition(2);
assertTrue(bi.hasNext());
tb.setForwardOnly(true);
bi.setPosition(1);
bi.disableSave();
for (int i = 0; i < 6; i++) {
assertNotNull(bi.nextTuple());
}
assertNull(bi.nextTuple());
assertEquals(0, tb.getManagedRowCount());
}
@Test public void testReadAhead() throws Exception {
BatchIterator bi = new BatchIterator(new FakeRelationalNode(1, new List[] {
Arrays.asList(1),
Arrays.asList(1),
Arrays.asList(1),
Arrays.asList(1),
Arrays.asList(1),
Arrays.asList(1),
}, 2));
BufferManager bm = BufferManagerFactory.getStandaloneBufferManager();
TupleBuffer tb = bm.createTupleBuffer(Arrays.asList(new ElementSymbol("x", null, DataTypeManager.DefaultDataClasses.INTEGER)), "test", TupleSourceType.PROCESSOR);
bi.setBuffer(tb, false); //$NON-NLS-1$
bi.nextTuple();
assertEquals(1, bi.available());
assertEquals(2, bi.getBuffer().getRowCount());
bi.readAhead(100);
assertEquals(4, bi.getBuffer().getRowCount());
//shouldn't keep reading
bi.readAhead(3);
assertEquals(4, bi.getBuffer().getRowCount());
bi.readAhead(5);
assertEquals(6, bi.getBuffer().getRowCount());
bi.readAhead(8); //does nothing
for (int i = 0; i < 5; i++) {
assertNotNull(bi.nextTuple());
}
assertNull(bi.nextTuple());
}
@Test public void testReadAheadMark() throws Exception {
BatchIterator bi = new BatchIterator(new FakeRelationalNode(1, new List[] {
Arrays.asList(1),
Arrays.asList(1),
Arrays.asList(1),
Arrays.asList(1),
Arrays.asList(1),
Arrays.asList(1),
Arrays.asList(1),
}, 2));
BufferManager bm = BufferManagerFactory.getStandaloneBufferManager();
TupleBuffer tb = bm.createTupleBuffer(Arrays.asList(new ElementSymbol("x", null, DataTypeManager.DefaultDataClasses.INTEGER)), "test", TupleSourceType.PROCESSOR);
bi.setBuffer(tb, true); //$NON-NLS-1$
bi.nextTuple();
assertEquals(1, bi.available());
assertEquals(0, bi.getBuffer().getRowCount());
bi.readAhead(100);
assertEquals(4, bi.getBuffer().getRowCount());
//shouldn't keep reading
bi.readAhead(2);
assertEquals(4, bi.getBuffer().getRowCount());
bi.readAhead(5);
assertEquals(6, bi.getBuffer().getRowCount());
bi.readAhead(8); //does nothing
for (int i = 0; i < 6; i++) {
assertNotNull(bi.nextTuple());
}
assertNull(bi.nextTuple());
}
@Test public void testNoSaveForwardOnly() throws Exception {
BatchIterator bi = new BatchIterator(new FakeRelationalNode(1, new List[] {
Arrays.asList(1),
Arrays.asList(1),
Arrays.asList(1),
Arrays.asList(1),
}, 2) {
@Override
public TupleBatch nextBatchDirect() throws BlockedException,
TeiidComponentException, TeiidProcessingException {
TupleBatch tb = super.nextBatchDirect();
tb.setRowOffset(tb.getBeginRow() + 3);
return tb;
}
});
BufferManager bm = BufferManagerFactory.getStandaloneBufferManager();
TupleBuffer tb = bm.createTupleBuffer(Arrays.asList(new ElementSymbol("x", null, DataTypeManager.DefaultDataClasses.INTEGER)), "test", TupleSourceType.PROCESSOR);
tb.setForwardOnly(true);
bi.setBuffer(tb, false); //$NON-NLS-1$
tb.addTuple(Arrays.asList(2));
tb.addTuple(Arrays.asList(2));
tb.addTuple(Arrays.asList(2));
assertEquals(3, bi.getBuffer().getManagedRowCount());
bi.nextTuple();
//pull the first batch
assertEquals(2, bi.available());
assertEquals(0, bi.getBuffer().getManagedRowCount());
for (int i = 0; i < 2; i++) {
assertNotNull(bi.nextTuple());
assertEquals(0, bi.getBuffer().getManagedRowCount());
}
bi.readAhead(3);
assertEquals(2, bi.getBuffer().getManagedRowCount());
for (int i = 0; i < 4; i++) {
assertNotNull(bi.nextTuple());
assertEquals(0, bi.getBuffer().getManagedRowCount());
}
assertNull(bi.nextTuple());
assertEquals(0, bi.getBuffer().getManagedRowCount());
}
}