JDBCPreparedStatement.java 文件源码

private void setClobForStringParameter(int parameterIndex,
        Clob x) throws SQLException {

    if (x instanceof JDBCClob) {
        setParameter(parameterIndex, ((JDBCClob) x).data());

        return;
    } else if (x == null) {
        setParameter(parameterIndex, null);

        return;
    }
    checkSetParameterIndex(parameterIndex, false);

    final long length = x.length();

    if (length > Integer.MAX_VALUE) {
        String msg = "Max Clob input character length exceeded: " + length;    // NOI18N

        throw Util.sqlException(ErrorCode.JDBC_INPUTSTREAM_ERROR, msg);
    }

    try {
        java.io.Reader  reader = x.getCharacterStream();
        CharArrayWriter writer = new CharArrayWriter(reader, (int) length);

        setParameter(parameterIndex, writer.toString());
    } catch (IOException e) {
        throw Util.sqlException(ErrorCode.SERVER_TRANSFER_CORRUPTED,
                                e.toString());
    }
}