Package org.apache.commons.vfs2.cache

Examples of org.apache.commons.vfs2.cache.OnCallRefreshFileObject

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    /**
     * Tests file creation
     */
    public void testFileCreate() throws Exception
    {
        FileObject scratchFolder = createScratchFolder();

        // Create direct child of the test folder
        FileObject file = scratchFolder.resolveFile("file1.txt");
        assertTrue(!file.exists());
        file.createFile();
        assertTrue(file.exists());
        assertSame(FileType.FILE, file.getType());
        assertEquals(0, file.getContent().getSize());
        assertFalse(file.isHidden());
        assertTrue(file.isReadable());
        assertTrue(file.isWriteable());

        // Create direct child of the test folder - special name
        file = scratchFolder.resolveFile("file1%25.txt");
        assertTrue(!file.exists());
        file.createFile();
        assertTrue(file.exists());
        assertSame(FileType.FILE, file.getType());
        assertEquals(0, file.getContent().getSize());
        assertFalse(file.isHidden());
        assertTrue(file.isReadable());
        assertTrue(file.isWriteable());

        // Create a descendant, where the intermediate folders don't exist
        file = scratchFolder.resolveFile("dir1/dir1/file1.txt");
        assertTrue(!file.exists());
        assertTrue(!file.getParent().exists());
        assertTrue(!file.getParent().getParent().exists());
        file.createFile();
        assertTrue(file.exists());
        assertSame(FileType.FILE, file.getType());
        assertEquals(0, file.getContent().getSize());
        assertTrue(file.getParent().exists());
        assertTrue(file.getParent().getParent().exists());
        assertFalse(file.getParent().isHidden());
        assertFalse(file.getParent().getParent().isHidden());

        // Test creating a file that already exists
        assertTrue(file.exists());
        file.createFile();
        assertTrue(file.exists());
        assertTrue(file.isReadable());
        assertTrue(file.isWriteable());
    }
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    /**
     * Sets up a scratch folder for the test to use.
     */
    protected FileObject createScratchFolder() throws Exception
    {
        FileObject scratchFolder = getWriteFolder();

        // Make sure the test folder is empty
        scratchFolder.delete(Selectors.EXCLUDE_SELF);
        scratchFolder.createFolder();

        return scratchFolder;
    }
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    /**
     * Tests create-delete-create-a-file sequence on the same file system.
     */
    public void testAppendContent() throws Exception
    {
        final FileObject scratchFolder = createScratchFolder();

        // Create direct child of the test folder
        final FileObject file = scratchFolder.resolveFile("file1.txt");
        assertTrue(!file.exists());

        // Create the source file
        final String content = "Here is some sample content for the file.  Blah Blah Blah.";
        final String contentAppend = content + content;

        final OutputStream os = file.getContent().getOutputStream();
        try
        {
            os.write(content.getBytes("utf-8"));
        }
        finally
        {
            os.close();
        }
        assertSameContent(content, file);

        // Append to the new file
        final OutputStream os2 = file.getContent().getOutputStream(true);
        try
        {
            os2.write(content.getBytes("utf-8"));
        }
        finally
        {
            os2.close();
        }
        assertSameContent(contentAppend, file);

        // Make sure we can copy the new file to another file on the same filesystem
        FileObject fileCopy = scratchFolder.resolveFile("file1copy.txt");
        assertTrue(!fileCopy.exists());
        fileCopy.copyFrom(file, Selectors.SELECT_SELF);

        assertSameContent(contentAppend, fileCopy);

        // Delete the file.
        assertTrue(fileCopy.exists());
        assertTrue(fileCopy.delete());
    }
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    /**
     * 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");
    }
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    /**
     * 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");
    }
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    /**
     * 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");
    }
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    /**
     * Tests url.
     */
    public void testURL() throws Exception
    {
        final FileObject file = getReadFolder().resolveFile("some-dir/");
        final URL url = file.getURL();

        assertEquals(file.getName().getURI(), url.toExternalForm());

        final URL parentURL;
        try
        {
            parentURL = new URL(url, "..");
        }
        catch (MalformedURLException e)
        {
            throw e;
        }
        assertEquals(file.getParent().getURL(), parentURL);

        final URL rootURL = new URL(url, "/");
        assertEquals(file.getFileSystem().getRoot().getURL(), rootURL);
    }
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     * Tests content.
     */
    public void testURLContent() throws Exception
    {
        // Test non-empty file
        FileObject file = getReadFolder().resolveFile("file1.txt");
        assertTrue(file.exists());

        URLConnection urlCon = file.getURL().openConnection();
        assertSameURLContent(FILE1_CONTENT, urlCon);

        // Test empty file
        file = getReadFolder().resolveFile("empty.txt");
        assertTrue(file.exists());

        urlCon = file.getURL().openConnection();
        assertSameURLContent("", urlCon);
    }
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     * Tests that unknown files have no content.
     */
    public void testUnknownURL() throws Exception
    {
        // Try getting the content of an unknown file
        final FileObject unknownFile = getReadFolder().resolveFile("unknown-file");
        assertFalse(unknownFile.exists());

        final URLConnection connection = unknownFile.getURL().openConnection();
        try
        {
            connection.getInputStream();
            fail();
        }
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    /**
     * Tests resolution of absolute URI.
     */
    public void testAbsoluteURI() throws Exception
    {
        final FileObject readFolder = getReadFolder();

        // Try fetching base folder again by its URI
        final String uri = readFolder.getName().getURI();
        FileObject file = getManager().resolveFile(uri, readFolder.getFileSystem().getFileSystemOptions());
        assertSame("file object", readFolder, file);

        // Try fetching the filesystem root by its URI
        final String rootUri = readFolder.getName().getRootURI();
        file = getManager().resolveFile(rootUri, readFolder.getFileSystem().getFileSystemOptions());
        assertSame(readFolder.getFileSystem().getRoot(), file);
        assertEquals(rootUri, file.getName().getRootURI());
        assertEquals(rootUri, file.getName().getURI());
        assertEquals(FileName.ROOT_PATH, file.getName().getPath());
    }
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