/*
* 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 org.apache.commons.vfs2.test;
import org.apache.commons.vfs2.CacheStrategy;
import org.apache.commons.vfs2.Capability;
import org.apache.commons.vfs2.FileObject;
import org.apache.commons.vfs2.Selectors;
import org.apache.commons.vfs2.impl.DefaultFileSystemManager;
import org.apache.commons.vfs2.impl.VirtualFileSystem;
import org.apache.commons.vfs2.provider.ram.RamFileObject;
import org.apache.commons.vfs2.util.FileObjectUtils;
/**
* Test the cache stragey
*
* @author <a href="mailto:imario@apache.org">Mario Ivankovits</a>
*/
public class ProviderCacheStrategyTests
extends AbstractProviderTestCase
{
/**
* Returns the capabilities required by the tests of this test case.
*/
@Override
protected Capability[] getRequiredCaps()
{
return new Capability[]
{
Capability.CREATE,
Capability.GET_TYPE,
Capability.LIST_CHILDREN,
};
}
/**
* Test the manual cache strategy
*/
public void testManualCache() throws Exception
{
FileObject scratchFolder = getWriteFolder();
if (FileObjectUtils.isInstanceOf(getBaseFolder(), RamFileObject.class) ||
scratchFolder.getFileSystem() instanceof VirtualFileSystem)
{
// cant check ram filesystem as every manager holds its own ram filesystem data
return;
}
scratchFolder.delete(Selectors.EXCLUDE_SELF);
DefaultFileSystemManager fs = createManager();
fs.setCacheStrategy(CacheStrategy.MANUAL);
fs.init();
FileObject foBase2 = getBaseTestFolder(fs);
FileObject cachedFolder = foBase2.resolveFile(scratchFolder.getName().getPath());
FileObject[] fos = cachedFolder.getChildren();
assertContainsNot(fos, "file1.txt");
scratchFolder.resolveFile("file1.txt").createFile();
fos = cachedFolder.getChildren();
assertContainsNot(fos, "file1.txt");
cachedFolder.refresh();
fos = cachedFolder.getChildren();
assertContains(fos, "file1.txt");
}
/**
* Test the on_resolve strategy
*/
public void testOnResolveCache() throws Exception
{
FileObject scratchFolder = getWriteFolder();
if (FileObjectUtils.isInstanceOf(getBaseFolder(), RamFileObject.class) ||
scratchFolder.getFileSystem() instanceof VirtualFileSystem)
{
// cant check ram filesystem as every manager holds its own ram filesystem data
return;
}
scratchFolder.delete(Selectors.EXCLUDE_SELF);
DefaultFileSystemManager fs = createManager();
fs.setCacheStrategy(CacheStrategy.ON_RESOLVE);
fs.init();
FileObject foBase2 = getBaseTestFolder(fs);
FileObject cachedFolder = foBase2.resolveFile(scratchFolder.getName().getPath());
FileObject[] fos = cachedFolder.getChildren();
assertContainsNot(fos, "file1.txt");
scratchFolder.resolveFile("file1.txt").createFile();
fos = cachedFolder.getChildren();
assertContainsNot(fos, "file1.txt");
cachedFolder = foBase2.resolveFile(scratchFolder.getName().getPath());
fos = cachedFolder.getChildren();
assertContains(fos, "file1.txt");
}
/**
* Test the on_call strategy
*/
public void testOnCallCache() throws Exception
{
FileObject scratchFolder = getWriteFolder();
if (FileObjectUtils.isInstanceOf(getBaseFolder(), RamFileObject.class) ||
scratchFolder.getFileSystem() instanceof VirtualFileSystem)
{
// cant check ram filesystem as every manager holds its own ram filesystem data
return;
}
scratchFolder.delete(Selectors.EXCLUDE_SELF);
DefaultFileSystemManager fs = createManager();
fs.setCacheStrategy(CacheStrategy.ON_CALL);
fs.init();
FileObject foBase2 = getBaseTestFolder(fs);
FileObject cachedFolder = foBase2.resolveFile(scratchFolder.getName().getPath());
FileObject[] fos = cachedFolder.getChildren();
assertContainsNot(fos, "file1.txt");
scratchFolder.resolveFile("file1.txt").createFile();
fos = cachedFolder.getChildren();
assertContains(fos, "file1.txt");
}
public void assertContainsNot(FileObject[] fos, String string)
{
for (int i = 0; i<fos.length; i++)
{
if (string.equals(fos[i].getName().getBaseName()))
{
fail(string + " should not be seen");
}
}
}
public void assertContains(FileObject[] fos, String string)
{
for (int i = 0; i<fos.length; i++)
{
if (string.equals(fos[i].getName().getBaseName()))
{
return;
}
}
fail(string + " should be seen");
}
}