@@ -0,0 +1,782 @@
+package net.sf.kerner.utils;%0A%0Aimport net.sf.kerner.utils.transformer.TransformerToString;%0A%0Apublic class TransformerToStringReplaceEmpty%3CE%3E implements TransformerToString%3CE%3E %7B%0A%0A    public final static String DEFAULT_EMPTY_STRING = %22 %22;%0A%0A    private String emtpyString = DEFAULT_EMPTY_STRING;%0A%0A    public synchronized String getEmtpyString() %7B%0A        return emtpyString;%0A    %7D%0A%0A    public synchronized void setEmtpyString(final String emtpyString) %7B%0A        this.emtpyString = emtpyString;%0A    %7D%0A%0A    public String transform(final E element) %7B%0A        if (element == null) %7B%0A            return getEmtpyString();%0A        %7D%0A        String result = element.toString();%0A        if (result.length() == 0) %7B%0A            result = getEmtpyString();%0A        %7D%0A        return result;%0A    %7D%0A%0A%7D%0A

Introduce TransformerToStringReplaceEmtpy.