Examples with ValueClob org.h2.value.ValueClob used on opensource projects

Example 31 with ValueClob

use of org.h2.value.ValueClob in project 468H2Project by lukeunderwood42.

the class ValueClob method createTempClob.

/**
 * Create a temporary CLOB value from a stream.
 *
 * @param in
 *            the reader
 * @param length
 *            the number of characters to read, or -1 for no limit
 * @param handler
 *            the data handler
 * @return the lob value
 */
public static ValueClob createTempClob(Reader in, long length, DataHandler handler) {
    if (length >= 0) {
        // blocks the network level
        try {
            in = new RangeReader(in, 0, length);
        } catch (IOException e) {
            throw DbException.convert(e);
        }
    }
    BufferedReader reader;
    if (in instanceof BufferedReader) {
        reader = (BufferedReader) in;
    } else {
        reader = new BufferedReader(in, Constants.IO_BUFFER_SIZE);
    }
    try {
        long remaining = Long.MAX_VALUE;
        if (length >= 0 && length < remaining) {
            remaining = length;
        }
        int len = ValueLob.getBufferSize(handler, remaining);
        char[] buff;
        if (len >= Integer.MAX_VALUE) {
            String data = IOUtils.readStringAndClose(reader, -1);
            buff = data.toCharArray();
            len = buff.length;
        } else {
            buff = new char[len];
            reader.mark(len);
            len = IOUtils.readFully(reader, buff, len);
        }
        if (len <= handler.getMaxLengthInplaceLob()) {
            return ValueClob.createSmall(new String(buff, 0, len));
        }
        reader.reset();
        return createTemporary(handler, reader, remaining);
    } catch (IOException e) {
        throw DbException.convertIOException(e, null);
    }
}