Examples with LobDataFile org.h2.value.lob.LobDataFile used on opensource projects

Example 1 with LobDataFile

use of org.h2.value.lob.LobDataFile in project h2database by h2database.

the class ValueClob method createTemporary.

/**
 * Create a CLOB in a temporary file.
 */
private static ValueClob createTemporary(DataHandler handler, Reader in, long remaining) throws IOException {
    String fileName = ValueLob.createTempLobFileName(handler);
    FileStore tempFile = handler.openFile(fileName, "rw", false);
    tempFile.autoDelete();
    long octetLength = 0L, charLength = 0L;
    try (FileStoreOutputStream out = new FileStoreOutputStream(tempFile, null)) {
        char[] buff = new char[Constants.IO_BUFFER_SIZE];
        while (true) {
            int len = ValueLob.getBufferSize(handler, remaining);
            len = IOUtils.readFully(in, buff, len);
            if (len == 0) {
                break;
            }
            // TODO reduce memory allocation
            byte[] data = new String(buff, 0, len).getBytes(StandardCharsets.UTF_8);
            out.write(data);
            octetLength += data.length;
            charLength += len;
        }
    }
    return new ValueClob(new LobDataFile(handler, fileName, tempFile), octetLength, charLength);
}

Example 2 with LobDataFile

use of org.h2.value.lob.LobDataFile in project SpringStudy by myounghaklee.

the class ValueBlob method createTemporary.

/**
 * Create a BLOB in a temporary file.
 */
private static ValueBlob createTemporary(DataHandler handler, byte[] buff, int len, InputStream in, long remaining) throws IOException {
    String fileName = ValueLob.createTempLobFileName(handler);
    FileStore tempFile = handler.openFile(fileName, "rw", false);
    tempFile.autoDelete();
    long tmpPrecision = 0;
    try (FileStoreOutputStream out = new FileStoreOutputStream(tempFile, null)) {
        while (true) {
            tmpPrecision += len;
            out.write(buff, 0, len);
            remaining -= len;
            if (remaining <= 0) {
                break;
            }
            len = ValueLob.getBufferSize(handler, remaining);
            len = IOUtils.readFully(in, buff, len);
            if (len <= 0) {
                break;
            }
        }
    }
    return new ValueBlob(new LobDataFile(handler, fileName, tempFile), tmpPrecision);
}

Example 3 with LobDataFile

use of org.h2.value.lob.LobDataFile in project h2database by h2database.

the class ValueBlob method createTemporary.

/**
 * Create a BLOB in a temporary file.
 */
private static ValueBlob createTemporary(DataHandler handler, byte[] buff, int len, InputStream in, long remaining) throws IOException {
    String fileName = ValueLob.createTempLobFileName(handler);
    FileStore tempFile = handler.openFile(fileName, "rw", false);
    tempFile.autoDelete();
    long tmpPrecision = 0;
    try (FileStoreOutputStream out = new FileStoreOutputStream(tempFile, null)) {
        while (true) {
            tmpPrecision += len;
            out.write(buff, 0, len);
            remaining -= len;
            if (remaining <= 0) {
                break;
            }
            len = ValueLob.getBufferSize(handler, remaining);
            len = IOUtils.readFully(in, buff, len);
            if (len <= 0) {
                break;
            }
        }
    }
    return new ValueBlob(new LobDataFile(handler, fileName, tempFile), tmpPrecision);
}

Example 4 with LobDataFile

use of org.h2.value.lob.LobDataFile in project SpringStudy by myounghaklee.

the class ValueClob method createTemporary.

/**
 * Create a CLOB in a temporary file.
 */
private static ValueClob createTemporary(DataHandler handler, Reader in, long remaining) throws IOException {
    String fileName = ValueLob.createTempLobFileName(handler);
    FileStore tempFile = handler.openFile(fileName, "rw", false);
    tempFile.autoDelete();
    long octetLength = 0L, charLength = 0L;
    try (FileStoreOutputStream out = new FileStoreOutputStream(tempFile, null)) {
        char[] buff = new char[Constants.IO_BUFFER_SIZE];
        while (true) {
            int len = ValueLob.getBufferSize(handler, remaining);
            len = IOUtils.readFully(in, buff, len);
            if (len == 0) {
                break;
            }
            // TODO reduce memory allocation
            byte[] data = new String(buff, 0, len).getBytes(StandardCharsets.UTF_8);
            out.write(data);
            octetLength += data.length;
            charLength += len;
        }
    }
    return new ValueClob(new LobDataFile(handler, fileName, tempFile), octetLength, charLength);
}