Examples of org.h2.store.FileStoreOutputStream

org.h2.store.FileStoreOutputStream
An output stream that is backed by a file store.

        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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        ts.getTrace("test").info("test");
        ts.close();
    }


    private void testTraceDebug() {
        TraceSystem ts = new TraceSystem(null);
        ByteArrayOutputStream out = new ByteArrayOutputStream();
        ts.setSysOut(new PrintStream(out));
        ts.setLevelSystemOut(TraceSystem.DEBUG);
        ts.getTrace("test").debug(new Exception("error"), "test");
        ts.close();
        String outString = new String(out.toByteArray());
        assertContains(outString, "error");
        assertContains(outString, "Exception");
        assertContains(outString, "test");
    }

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    private void testReadOnly() throws Exception {
        String readOnlyFile = getBaseDir() + "/readOnly.log";
        IOUtils.delete(readOnlyFile);
        IOUtils.openFileOutputStream(readOnlyFile, false).close();
        FileSystem.getInstance(getBaseDir()).setReadOnly(readOnlyFile);
        TraceSystem ts = new TraceSystem(readOnlyFile);
        ts.setLevelFile(TraceSystem.INFO);
        ts.getTrace("test").info("test");
        IOUtils.delete(readOnlyFile);
        ts.close();
    }

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        if (file == null) {
            return;
        }
        if (isEncrypted()) {
            initStore();
            out = new FileStoreOutputStream(store, this, compressionAlgorithm);
            // always use a big buffer, otherwise end-of-block is written a lot
            out = new BufferedOutputStream(out, Constants.IO_BUFFER_SIZE_COMPRESS);
        } else {
            OutputStream o = IOUtils.openFileOutputStream(file, false);
            out = new BufferedOutputStream(o, Constants.IO_BUFFER_SIZE);

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        }
    }


    private void createTempFromStream(byte[] buff, int len, InputStream in, long remaining, DataHandler h) {
        try {
            FileStoreOutputStream out = initTemp(h);
            boolean compress = h.getLobCompressionAlgorithm(Value.BLOB) != null;
            try {
                while (true) {
                    precision += len;
                    out.write(buff, 0, len);
                    remaining -= len;
                    if (remaining <= 0) {
                        break;
                    }
                    len = getBufferSize(h, compress, remaining);
                    len = IOUtils.readFully(in, buff, 0, len);
                    if (len <= 0) {
                        break;
                    }
                }
            } finally {
                out.close();
            }
        } catch (IOException e) {
            throw DbException.convertIOException(e, null);
        }
    }

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        } catch (IOException e) {
            throw DbException.convertIOException(e, null);
        }
        tempFile = h.openFile(fileName, "rw", false);
        tempFile.autoDelete();
        FileStoreOutputStream out = new FileStoreOutputStream(tempFile, null, null);
        return out;
    }

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        return (int) m;
    }


    private void createFromReader(char[] buff, int len, Reader in, long remaining, DataHandler h) {
        try {
            FileStoreOutputStream out = initLarge(h);
            boolean compress = h.getLobCompressionAlgorithm(Value.CLOB) != null;
            try {
                while (true) {
                    precision += len;
                    byte[] b = StringUtils.utf8Encode(new String(buff, 0, len));
                    out.write(b, 0, b.length);
                    remaining -= len;
                    if (remaining <= 0) {
                        break;
                    }
                    len = getBufferSize(h, compress, remaining);
                    len = IOUtils.readFully(in, buff, len);
                    if (len <= 0) {
                        break;
                    }
                }
            } finally {
                out.close();
            }
        } catch (IOException e) {
            throw DbException.convertIOException(e, null);
        }
    }

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            objectId = getNewObjectId(h);
            fileName = getFileNamePrefix(path, objectId) + Constants.SUFFIX_TEMP_FILE;
            tempFile = h.openFile(fileName, "rw", false);
            tempFile.autoDelete();
        }
        FileStoreOutputStream out = new FileStoreOutputStream(tempFile, h, compressionAlgorithm);
        return out;
    }

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        return out;
    }


    private void createFromStream(byte[] buff, int len, InputStream in, long remaining, DataHandler h) {
        try {
            FileStoreOutputStream out = initLarge(h);
            boolean compress = h.getLobCompressionAlgorithm(Value.BLOB) != null;
            try {
                while (true) {
                    precision += len;
                    out.write(buff, 0, len);
                    remaining -= len;
                    if (remaining <= 0) {
                        break;
                    }
                    len = getBufferSize(h, compress, remaining);
                    len = IOUtils.readFully(in, buff, 0, len);
                    if (len <= 0) {
                        break;
                    }
                }
            } finally {
                out.close();
            }
        } catch (IOException e) {
            throw DbException.convertIOException(e, null);
        }
    }

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        }
    }


    private void createTempFromReader(char[] buff, int len, Reader in, long remaining, DataHandler h) {
        try {
            FileStoreOutputStream out = initTemp(h);
            try {
                while (true) {
                    precision += len;
                    byte[] b = StringUtils.utf8Encode(new String(buff, 0, len));
                    out.write(b, 0, b.length);
                    remaining -= len;
                    if (remaining <= 0) {
                        break;
                    }
                    len = getBufferSize(h, false, remaining);
                    len = IOUtils.readFully(in, buff, len);
                    if (len <= 0) {
                        break;
                    }
                }
            } finally {
                out.close();
            }
        } catch (IOException e) {
            throw DbException.convertIOException(e, null);
        }
    }

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