/*
* 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.hp.hpl.jena.tdb.base.block;
import java.nio.ByteBuffer ;
import org.junit.AfterClass ;
import org.junit.BeforeClass ;
import org.junit.Test ;
import org.openjena.atlas.junit.BaseTest ;
import com.hp.hpl.jena.tdb.base.block.Block ;
import com.hp.hpl.jena.tdb.base.block.BlockException ;
import com.hp.hpl.jena.tdb.base.block.BlockMgr ;
import com.hp.hpl.jena.tdb.base.block.BlockMgrFactory ;
import com.hp.hpl.jena.tdb.base.block.BlockMgrTracker ;
public class TestBlockMgrTracked extends BaseTest
{
// Mainly testing the tracking
static boolean b ;
@BeforeClass
static public void beforeClass()
{
b = BlockMgrTracker.verbose ;
BlockMgrTracker.verbose = false ;
}
@AfterClass
static public void afterClass()
{
BlockMgrTracker.verbose = b ;
}
@Test public void track_01()
{
BlockMgr mgr = BlockMgrFactory.createMem("BPTRecord", 4) ;
mgr = BlockMgrFactory.tracker(mgr) ;
mgr.beginUpdate() ;
Block block = mgr.allocate(4) ;
ByteBuffer bb = block.getByteBuffer() ;
bb.putInt(0,1234) ;
mgr.write(block) ;
mgr.release(block) ;
// -----
Block block2 = mgr.getRead(block.getId()) ;
ByteBuffer bb2 = block2.getByteBuffer() ;
assertArrayEquals(bb.array(), bb2.array()) ;
mgr.release(block2) ;
mgr.endUpdate() ;
}
// Multiple overlapping read operations.
static BlockMgr setup()
{
BlockMgr mgr = BlockMgrFactory.createMem("BPTRecord", 4) ;
mgr = BlockMgrFactory.tracker(mgr) ;
return mgr ;
}
static void write(BlockMgr mgr, int value)
{
mgr.beginUpdate() ;
Block block = mgr.allocate(4) ;
ByteBuffer bb = block.getByteBuffer() ;
bb.putInt(0,value) ;
mgr.write(block) ;
mgr.release(block) ;
mgr.endUpdate() ;
}
@Test public void track_02()
{
BlockMgr mgr = setup() ;
write(mgr, 1234) ;
write(mgr, 5678) ;
mgr.beginRead() ;
mgr.beginRead() ;
Block b0 = mgr.getRead(0) ;
Block b1 = mgr.getRead(1) ;
mgr.release(b1) ;
mgr.release(b0) ;
mgr.endRead() ;
mgr.endRead() ;
}
@Test(expected=BlockException.class)
public void track_03()
{
BlockMgr mgr = setup() ;
write(mgr, 1234) ;
write(mgr, 5678) ;
mgr.beginRead() ;
Block b0 = mgr.getWrite(0) ;
mgr.endRead() ;
}
@Test(expected=BlockException.class)
public void track_04()
{
BlockMgr mgr = setup() ;
write(mgr, 1234) ;
mgr.beginRead() ;
Block b0 = mgr.getRead(0) ;
mgr.promote(b0) ;
mgr.endRead() ;
}
@Test(expected=BlockException.class)
public void track_05()
{
BlockMgr mgr = setup() ;
mgr.beginRead() ;
mgr.endUpdate() ;
}
@Test(expected=BlockException.class)
public void track_06()
{
BlockMgr mgr = setup() ;
mgr.beginUpdate() ;
mgr.endRead() ;
}
}