Examples of FileObject

com.alibaba.antx.util.FileObject
��һ��File�ĸ��, ��ȡ�þ��Ժ��·��. @author Michael Zhou
com.dragome.compiler.utils.FileObject
com.orange.wink.util.FileObject
@author Sylvain Lalande
eu.planets_project.pp.plato.services.crib_integration.remoteclient.FileObject
eu.planets_project.pp.plato.services.crib_integration.tu_client.FileObject
javax.tools.FileObject
File abstraction for tools. In this context, file means an abstraction of regular files and other sources of data. For example, a file object can be used to represent regular files, memory cache, or data in databases.
All methods in this interface might throw a SecurityException if a security exception occurs.
Unless explicitly allowed, all methods in this interface might throw a NullPointerException if given a {@code null} argument. @author Peter von der Ahé @author Jonathan Gibbons @since 1.6
net.paoding.rose.scanning.vfs.FileObject
@author 王志亮 [qieqie.wang@gmail.com]
org.apache.commons.vfs.FileObject
Represents a file, and is used to access the content and structure of the file.

Files are arranged in a hierarchy. Each hierachy forms a file system. A file system represents things like a local OS file system, a windows share, an HTTP server, or the contents of a Zip file.

There are two types of files: Folders, which contain other files, and normal files, which contain data, or content. A folder may not have any content, and a normal file cannot contain other files.

File Naming

TODO - write this.

Reading and Writing a File

Reading and writing a file, and all other operations on the file's content, is done using the {@link FileContent} object returnedby {@link #getContent}.

Creating and Deleting a File

A file is created using either {@link #createFolder}, {@link #createFile}, or by writing to the file using one of the {@link FileContent} methods.

A file is deleted using {@link #delete}. Recursive deletion can be done using {@link #delete(FileSelector)}.

Finding Files

Other files in the same file system as this file can be found using:
- {@link #resolveFile} to find another file relative to this file.
- {@link #getChildren} and {@link #getChild} to find the children of this file.
- {@link #getParent} to find the folder containing this file.
- {@link #getFileSystem} to find another file in the same file system.
To find files in another file system, use a {@link FileSystemManager}. @author Adam Murdoch @see FileSystemManager @see FileContent @see FileName
org.apache.commons.vfs2.FileObject
.apache.org/vfs/team-list.html">Commons VFS team @see FileSystemManager @see FileContent @see FileName
org.apache.ftpserver.ftplet.FileObject
This is the file abstraction used by the server.
org.h2.store.fs.FileObject
This interface represents a random access file.
org.openide.filesystems.FileObject

Examples of org.h2.store.fs.FileObject

        return Math.max(0, len - FileObjectCrypt.HEADER_LENGTH - FileObjectCrypt.BLOCK_SIZE);
    }


    public FileObject openFileObject(String fileName, String mode) throws IOException {
        String[] parsed = parse(fileName);
        FileObject file = IOUtils.openFileObject(parsed[2], mode);
        return new FileObjectCrypt(fileName, parsed[0], parsed[1], file);
    }

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Examples of org.h2.store.fs.FileObject

        return new FileObjectCrypt(fileName, parsed[0], parsed[1], file);
    }


    public OutputStream openFileOutputStream(String fileName, boolean append) {
        try {
            FileObject file = openFileObject(fileName, "rw");
            return new FileObjectOutputStream(file, append);
        } catch (IOException e) {
            throw DbException.convertIOException(e, fileName);
        }
    }

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Examples of org.h2.store.fs.FileObject

        }
    }


    public InputStream openFileInputStream(String fileName) {
        try {
            FileObject file = openFileObject(fileName, "r");
            return new FileObjectInputStream(file);
        } catch (IOException e) {
            throw DbException.convertIOException(e, fileName);
        }
    }

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Examples of org.h2.store.fs.FileObject

        fs.createDirs(fsBase + "/test/x");
        fs.delete(fsBase + "/test");
        fs.delete(fsBase + "/test2");
        assertTrue(fs.createNewFile(fsBase + "/test"));
        assertTrue(fs.canWrite(fsBase + "/test"));
        FileObject fo = fs.openFileObject(fsBase + "/test", "rw");
        byte[] buffer = new byte[10000];
        Random random = new Random(1);
        random.nextBytes(buffer);
        fo.write(buffer, 0, 10000);
        assertEquals(10000, fo.length());
        fo.seek(20000);
        assertEquals(20000, fo.getFilePointer());
        assertThrows(EOFException.class, fo).readFully(buffer, 0, 1);
        assertEquals(fsBase + "/test", fo.getName().replace('\\', '/'));
        assertEquals("test", fs.getFileName(fo.getName()));
        assertEquals(fsBase, fs.getParent(fo.getName()).replace('\\', '/'));
        fo.tryLock();
        fo.releaseLock();
        assertEquals(10000, fo.length());
        fo.close();
        assertEquals(10000, fs.length(fsBase + "/test"));
        fo = fs.openFileObject(fsBase + "/test", "r");
        byte[] test = new byte[10000];
        fo.readFully(test, 0, 10000);
        assertEquals(buffer, test);
        assertThrows(IOException.class, fo).write(test, 0, 10);
        assertThrows(IOException.class, fo).setFileLength(10);
        fo.close();
        long lastMod = fs.getLastModified(fsBase + "/test");
        if (lastMod < time - 1999) {
            // at most 2 seconds difference
            assertEquals(time, lastMod);
        }

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Examples of org.h2.store.fs.FileObject

        File file = new File(TestBase.BASE_TEST_DIR + "/tmp");
        file.getParentFile().mkdirs();
        file.delete();
        RandomAccessFile ra = new RandomAccessFile(file, "rw");
        fs.delete(s);
        FileObject f = fs.openFileObject(s, "rw");
        assertThrows(EOFException.class, f).readFully(new byte[1], 0, 1);
        f.sync();
        Random random = new Random(seed);
        int size = getSize(100, 500);
        try {
            for (int i = 0; i < size; i++) {
                trace("op " + i);
                int pos = random.nextInt(10000);
                switch(random.nextInt(7)) {
                case 0: {
                    pos = (int) Math.min(pos, ra.length());
                    trace("seek " + pos);
                    buff.append("seek " + pos + "\n");
                    f.seek(pos);
                    ra.seek(pos);
                    break;
                }
                case 1: {
                    byte[] buffer = new byte[random.nextInt(1000)];
                    random.nextBytes(buffer);
                    trace("write " + buffer.length);
                    buff.append("write " + buffer.length + "\n");
                    f.write(buffer, 0, buffer.length);
                    ra.write(buffer, 0, buffer.length);
                    break;
                }
                case 2: {
                    trace("setLength " + pos);
                    f.setFileLength(pos);
                    ra.setLength(pos);
                    if (ra.getFilePointer() > pos) {
                        f.seek(0);
                        ra.seek(0);
                    }
                    buff.append("setLength " + pos + "\n");
                    break;
                }
                case 3: {
                    int len = random.nextInt(1000);
                    len = (int) Math.min(len, ra.length() - ra.getFilePointer());
                    byte[] b1 = new byte[len];
                    byte[] b2 = new byte[len];
                    trace("readFully " + len);
                    ra.readFully(b1, 0, len);
                    f.readFully(b2, 0, len);
                    buff.append("readFully " + len + "\n");
                    assertEquals(b1, b2);
                    break;
                }
                case 4: {
                    trace("getFilePointer");
                    buff.append("getFilePointer\n");
                    assertEquals(ra.getFilePointer(), f.getFilePointer());
                    break;
                }
                case 5: {
                    trace("length " + ra.length());
                    buff.append("length " + ra.length() + "\n");
                    assertEquals(ra.length(), f.length());
                    break;
                }
                case 6: {
                    trace("reopen");
                    buff.append("reopen\n");
                    f.close();
                    ra.close();
                    ra = new RandomAccessFile(file, "rw");
                    f = fs.openFileObject(s, "rw");
                    assertEquals(ra.length(), f.length());
                    break;
                }
                default:
                }
            }
        } catch (Throwable e) {
            e.printStackTrace();
            fail("Exception: " + e + "\n"+ buff.toString());
        } finally {
            f.close();
            ra.close();
            file.delete();
            fs.delete(s);
        }
    }

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Examples of org.h2.store.fs.FileObject

        DeleteDbFiles.execute(getBaseDir(), "recovery", true);
        Connection conn = getConnection("recovery");
        Statement stat = conn.createStatement();
        stat.execute("create table test(id int, name varchar) as select 1, 'Hello World1'");
        conn.close();
        FileObject f = FileSystem.getInstance(getBaseDir()).openFileObject(getBaseDir() + "/recovery.h2.db", "rw");
        byte[] buff = new byte[Constants.DEFAULT_PAGE_SIZE];
        while (f.getFilePointer() < f.length()) {
            f.readFully(buff, 0, buff.length);
            if (new String(buff).indexOf("Hello World1") >= 0) {
                buff[buff.length - 1]++;
                f.seek(f.getFilePointer() - buff.length);
                f.write(buff, 0, buff.length);
            }
        }
        f.close();
        Recover.main("-dir", getBaseDir(), "-db", "recovery");
        String script = IOUtils.readStringAndClose(
                new InputStreamReader(
                IOUtils.openFileInputStream(getBaseDir() + "/recovery.h2.sql")), -1);
        assertContains(script, "checksum mismatch");

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Examples of org.h2.store.fs.FileObject

        conn = getConnection("pageStore");
        Statement stat = conn.createStatement();
        stat.execute("drop table if exists INFORMATION_SCHEMA.LOB_DATA");
        stat.execute("drop table if exists INFORMATION_SCHEMA.LOB_MAP");
        conn.close();
        FileObject f = FileSystem.getInstance(fileName).openFileObject(fileName, "rw");
        // create a new database
        conn = getConnection("pageStore");
        conn.close();
        f = FileSystem.getInstance(fileName).openFileObject(fileName, "rw");
        f.setFileLength(16);
        // create a new database
        conn = getConnection("pageStore");
        conn.close();
        deleteDb("pageStore");
    }

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Examples of org.h2.store.fs.FileObject


        String fileName = getBaseDir() + "/testNull.csv";
        FileSystem fs = FileSystem.getInstance(fileName);
        fs.delete(fileName);


        FileObject file = fs.openFileObject(fileName, "rw");
        String csvContent = "\"A\",\"B\",\"C\",\"D\"\n\\N,\"\",\"\\N\",";
        byte[] b = csvContent.getBytes("UTF-8");
        file.write(b, 0, b.length);
        file.close();
        Csv csv = Csv.getInstance();
        csv.setNullString("\\N");
        ResultSet rs = csv.read(file.getName(), null, "UTF8");
        ResultSetMetaData meta = rs.getMetaData();
        assertEquals(4, meta.getColumnCount());
        assertEquals("A", meta.getColumnLabel(1));
        assertEquals("B", meta.getColumnLabel(2));
        assertEquals("C", meta.getColumnLabel(3));
        assertEquals("D", meta.getColumnLabel(4));
        assertTrue(rs.next());
        assertEquals(null, rs.getString(1));
        assertEquals("", rs.getString(2));
        // null is never quoted
        assertEquals("\\N", rs.getString(3));
        // an empty string is always parsed as null
        assertEquals(null, rs.getString(4));
        assertFalse(rs.next());


        Connection conn = getConnection("csv");
        Statement stat = conn.createStatement();
        stat.execute("call csvwrite('" + file.getName() +
                "', 'select NULL as a, '''' as b, ''\\N'' as c, NULL as d', 'UTF8', ',', '\"', NULL, '\\N', '\n')");
        InputStreamReader reader = new InputStreamReader(fs.openFileInputStream(fileName));
        // on read, an empty string is treated like null,
        // but on write a null is always written with the nullString
        String data = IOUtils.readStringAndClose(reader, -1);

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Examples of org.h2.store.fs.FileObject

    private void testFieldDelimiter() throws Exception {
        String fileName = getBaseDir() + "/test.csv";
        String fileName2 = getBaseDir() + "/test2.csv";
        FileSystem fs = FileSystem.getInstance(fileName);
        fs.delete(fileName);
        FileObject file = fs.openFileObject(fileName, "rw");
        byte[] b = "'A'; 'B'\n\'It\\'s nice\'; '\nHello\\*\n'".getBytes();
        file.write(b, 0, b.length);
        file.close();
        Connection conn = getConnection("csv");
        Statement stat = conn.createStatement();
        ResultSet rs = stat.executeQuery("select * from csvread('" + fileName + "', null, null, ';', '''', '\\')");
        ResultSetMetaData meta = rs.getMetaData();
        assertEquals(2, meta.getColumnCount());

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Examples of org.h2.store.fs.FileObject


    private void testRead() throws Exception {
        String fileName = getBaseDir() + "/test.csv";
        FileSystem fs = FileSystem.getInstance(fileName);
        fs.delete(fileName);
        FileObject file = fs.openFileObject(fileName, "rw");
        byte[] b = "a,b,c,d\n201,-2,0,18\n, \"abc\"\"\" ,,\"\"\n 1 ,2 , 3, 4 \n5, 6, 7, 8".getBytes();
        file.write(b, 0, b.length);
        file.close();
        ResultSet rs = Csv.getInstance().read(fileName, null, "UTF8");
        ResultSetMetaData meta = rs.getMetaData();
        assertEquals(4, meta.getColumnCount());
        assertEquals("A", meta.getColumnLabel(1));
        assertEquals("B", meta.getColumnLabel(2));

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Examples of FileObject

File Naming

Reading and Writing a File

Creating and Deleting a File

Finding Files

Examples of org.h2.store.fs.FileObject

Examples of org.h2.store.fs.FileObject

Examples of org.h2.store.fs.FileObject

Examples of org.h2.store.fs.FileObject

Examples of org.h2.store.fs.FileObject

Examples of org.h2.store.fs.FileObject

Examples of org.h2.store.fs.FileObject

Examples of org.h2.store.fs.FileObject

Examples of org.h2.store.fs.FileObject

Examples of org.h2.store.fs.FileObject