class StringValue implements Expression {

    public String getNotExcapedValue() {
        StringBuilder buffer = new StringBuilder(value);
        int index = 0;
        int deletesNum = 0;
        while ((index = value.indexOf("''", index)) != -1) {
            buffer.deleteCharAt(index - deletesNum);
            index += 2;
            deletesNum++;
        }
        return buffer.toString();
    }

    public  StringValue(String escapedValue);

}