Package org.h2.store

Examples of org.h2.store.FileStore

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        testReadOnly();
        testAdapter();
    }

    private static void testAdapter() {
        TraceSystem ts = new TraceSystem(null);
        ts.setLevelFile(TraceSystem.ADAPTER);
        ts.getTrace("test").info("test");
        ts.close();
    }
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    public FileStore openFile(String name, String openMode, boolean mustExist) {
        if (mustExist && !IOUtils.exists(name)) {
            throw DbException.get(ErrorCode.FILE_NOT_FOUND_1, name);
        }
        FileStore store = FileStore.open(this, name, openMode, cipher, filePasswordHash);
        try {
            store.init();
        } catch (DbException e) {
            store.closeSilently();
            throw e;
        }
        return store;
    }
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    public FileStore openFile(String name, String mode, boolean mustExist) {
        if (mustExist && !IOUtils.exists(name)) {
            throw DbException.get(ErrorCode.FILE_NOT_FOUND_1, name);
        }
        FileStore store;
        if (cipher == null) {
            store = FileStore.open(this, name, mode);
        } else {
            store = FileStore.open(this, name, mode, cipher, fileEncryptionKey, 0);
        }
        store.setCheckedWriting(false);
        try {
            store.init();
        } catch (DbException e) {
            store.closeSilently();
            throw e;
        }
        return store;
    }
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    }

    private void doTest(boolean compress) throws Exception {
        int len = getSize(1000, 10000);
        Random random = new Random();
        FileStore mem = null, file = null;
        byte[] buffMem = null;
        byte[] buffFile = null;
        String prefix = compress ? "memLZF:" : "memFS:";
        IOUtils.delete(prefix + "test");
        IOUtils.delete("~/testFile");

        // config.traceTest = true;

        for (int i = 0; i < len; i++) {
            if (buffMem == null) {
                int l = 1 + random.nextInt(1000);
                buffMem = new byte[l];
                buffFile = new byte[l];
            }
            if (file == null) {
                mem = FileStore.open(this, prefix + "test", "rw");
                file = FileStore.open(this, "~/testFile", "rw");
            }
            assertEquals(file.getFilePointer(), mem.getFilePointer());
            assertEquals(file.length(), mem.length());
            int x = random.nextInt(100);
            if ((x -= 20) < 0) {
                if (file.length() > 0) {
                    long pos = random.nextInt((int) (file.length() / 16)) * 16;
                    trace("seek " + pos);
                    mem.seek(pos);
                    file.seek(pos);
                }
            } else if ((x -= 20) < 0) {
                trace("close");
                mem.close();
                file.close();
                mem = null;
                file = null;
            } else if ((x -= 20) < 0) {
                if (buffFile.length > 16) {
                    random.nextBytes(buffFile);
                    System.arraycopy(buffFile, 0, buffMem, 0, buffFile.length);
                    int off = random.nextInt(buffFile.length - 16);
                    int l = random.nextInt((buffFile.length - off) / 16) * 16;
                    trace("write " + off + " " + l);
                    mem.write(buffMem, off, l);
                    file.write(buffFile, off, l);
                }
            } else if ((x -= 20) < 0) {
                if (buffFile.length > 16) {
                    int off = random.nextInt(buffFile.length - 16);
                    int l = random.nextInt((buffFile.length - off) / 16) * 16;
                    l = (int) Math.min(l, file.length() - file.getFilePointer());
                    trace("read " + off + " " + l);
                    Exception a = null, b = null;
                    try {
                        file.readFully(buffFile, off, l);
                    } catch (Exception e) {
                        a = e;
                    }
                    try {
                        mem.readFully(buffMem, off, l);
                    } catch (Exception e) {
                        b = e;
                    }
                    if (a != b) {
                        if (a == null || b == null) {
                            fail("only one threw an exception");
                        }
                    }
                    assertEquals(buffMem, buffFile);
                }
            } else if ((x -= 10) < 0) {
                trace("reset buffers");
                buffMem = null;
                buffFile = null;
            } else {
                int l = random.nextInt(10000) * 16;
                long p = file.getFilePointer();
                file.setLength(l);
                mem.setLength(l);
                trace("setLength " + l);
                if (p > l) {
                    file.seek(l);
                    mem.seek(l);
                }
            }
        }
        if (mem != null) {
            mem.close();
            file.close();
        }
        IOUtils.delete(prefix + "test");
        IOUtils.delete("~/testFile");
    }
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        writer.println("-- dump: " + sb.toString());
    }

    private void dumpLob(String fileName, boolean lobCompression) {
        OutputStream fileOut = null;
        FileStore fileStore = null;
        long size = 0;
        String n = fileName + (lobCompression ? ".comp" : "") + ".txt";
        InputStream in = null;
        try {
            fileOut = IOUtils.openFileOutputStream(n, false);
            fileStore = FileStore.open(null, fileName, "r");
            fileStore.init();
            in = new FileStoreInputStream(fileStore, this, lobCompression, false);
            size = IOUtils.copy(in, fileOut);
        } catch (Throwable e) {
            // this is usually not a problem, because we try both compressed and
            // uncompressed
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            }
        }
    }

    private void process(String fileName) {
        FileStore in;
        if (decrypt == null) {
            in = FileStore.open(null, fileName, "r");
        } else {
            in = FileStore.open(null, fileName, "r", cipherType, decrypt);
        }
        in.init();
        copy(fileName, in, encrypt);
    }
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        if (IOUtils.isDirectory(fileName)) {
            return;
        }
        String temp = directory + "/temp.db";
        IOUtils.delete(temp);
        FileStore fileOut;
        if (key == null) {
            fileOut = FileStore.open(null, temp, "rw");
        } else {
            fileOut = FileStore.open(null, temp, "rw", cipherType, key);
        }
        fileOut.init();
        byte[] buffer = new byte[4 * 1024];
        long remaining = in.length() - FileStore.HEADER_LENGTH;
        long total = remaining;
        in.seek(FileStore.HEADER_LENGTH);
        fileOut.seek(FileStore.HEADER_LENGTH);
        long time = System.currentTimeMillis();
        while (remaining > 0) {
            if (System.currentTimeMillis() - time > 1000) {
                out.println(fileName + ": " + (100 - 100 * remaining / total) + "%");
                time = System.currentTimeMillis();
            }
            int len = (int) Math.min(buffer.length, remaining);
            in.readFully(buffer, 0, len);
            fileOut.write(buffer, 0, len);
            remaining -= len;
        }
        in.close();
        fileOut.close();
        IOUtils.delete(fileName);
        IOUtils.rename(temp, fileName);
    }
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    public InputStream getInputStream() {
        if (fileName == null) {
            return new ByteArrayInputStream(small);
        }
        FileStore store = handler.openFile(fileName, "r", true);
        boolean alwaysClose = SysProperties.lobCloseBetweenReads;
        return new BufferedInputStream(new FileStoreInputStream(store, handler, compression, alwaysClose),
                Constants.IO_BUFFER_SIZE);
    }
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    public InputStream getInputStream() {
        if (small != null) {
            return new ByteArrayInputStream(small);
        } else if (fileName != null) {
            FileStore store = handler.openFile(fileName, "r", true);
            boolean alwaysClose = SysProperties.lobCloseBetweenReads;
            return new BufferedInputStream(new FileStoreInputStream(store, handler, false, alwaysClose),
                    Constants.IO_BUFFER_SIZE);
        }
        long byteCount = (type == Value.BLOB) ? precision : -1;
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        try {
            OutputStream out;
            if (cipher != null) {
                byte[] key = SHA256.getKeyPasswordHash("script", password.toCharArray());
                IOUtils.delete(fileName);
                FileStore store = FileStore.open(null, fileName, "rw", cipher, key);
                store.init();
                out = new FileStoreOutputStream(store, null, compressionAlgorithm);
                out = new BufferedOutputStream(out, Constants.IO_BUFFER_SIZE_COMPRESS);
            } else {
                out = IOUtils.openFileOutputStream(fileName, false);
                out = new BufferedOutputStream(out, Constants.IO_BUFFER_SIZE);
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