DefaultLobHandler.java 文件源码

@Override
public void setClobAsAsciiStream(
        PreparedStatement ps, int paramIndex, InputStream asciiStream, int contentLength)
        throws SQLException {

    if (streamAsLob) {
        if (asciiStream != null) {
            try {
                ps.setClob(paramIndex, new InputStreamReader(asciiStream, "US-ASCII"), contentLength);
            }
            catch (UnsupportedEncodingException ex) {
                throw new SQLException("US-ASCII encoding not supported: " + ex);
            }
        }
        else {
            ps.setClob(paramIndex, (Clob) null);
        }
    }
    else if (wrapAsLob) {
        if (asciiStream != null) {
            ps.setClob(paramIndex, new PassThroughClob(asciiStream, contentLength));
        }
        else {
            ps.setClob(paramIndex, (Clob) null);
        }
    }
    else {
        ps.setAsciiStream(paramIndex, asciiStream, contentLength);
    }
    if (logger.isDebugEnabled()) {
        logger.debug(asciiStream != null ? "Set ASCII stream for CLOB with length " + contentLength :
                "Set CLOB to null");
    }
}