/*
Copyright (C) SYSTAP, LLC DBA Blazegraph 2006-2016. All rights reserved.
Contact:
SYSTAP, LLC DBA Blazegraph
2501 Calvert ST NW #106
Washington, DC 20008
licenses@blazegraph.com
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/*
* Created on Jun 10, 2008
*/
package com.bigdata.btree;
import java.util.UUID;
import com.bigdata.btree.AbstractBTreeTupleCursor.ReadOnlyBTreeTupleCursor;
import com.bigdata.rawstore.SimpleMemoryRawStore;
/**
* Unit tests for {@link ITupleCursor} for a read-only {@link BTree}.
*
* @author <a href="mailto:thompsonbry@users.sourceforge.net">Bryan Thompson</a>
* @version $Id$
*/
public class TestReadOnlyBTreeCursors extends AbstractBTreeCursorTestCase {
/**
*
*/
public TestReadOnlyBTreeCursors() {
}
/**
* @param arg0
*/
public TestReadOnlyBTreeCursors(String arg0) {
super(arg0);
}
@Override
protected boolean isReadOnly() {
return true;
}
@Override
protected ITupleCursor2<String> newCursor(AbstractBTree btree, int flags,
byte[] fromKey, byte[] toKey) {
assert btree.isReadOnly();
return new ReadOnlyBTreeTupleCursor<String>((BTree) btree,
new Tuple<String>(btree, IRangeQuery.DEFAULT),
fromKey, toKey);
}
/**
* Verify that {@link ITupleCursor#remove()} will thrown an exception if
* the source {@link BTree} does not allow writes.
*/
public void test_remove_not_allowed() {
BTree btree = BTree.create(new SimpleMemoryRawStore(),
new IndexMetadata(UUID.randomUUID()));
btree.insert(10, "Bryan");
btree.writeCheckpoint();
btree = btree.asReadOnly();
final ITupleCursor<String> cursor = newCursor(btree);
assertEquals(new TestTuple<String>(10,"Bryan"),cursor.next());
try {
cursor.remove();
fail("Expecting: "+UnsupportedOperationException.class);
} catch(UnsupportedOperationException ex) {
log.info("Ignoring expected exception: "+ex);
}
}
}