To be more precise it happens when processing the map entry "cocoon". So in this case there must be some circular reference.. finding that needle is a bit more difficult :(
Robby -----Original Message----- From: Thorsten Scherler [mailto:scher...@gmail.com] Sent: Tuesday, February 26, 2013 1:43 PM To: dev@cocoon.apache.org Subject: Re: REST view and weird error On 02/25/2013 02:10 PM, Thorsten Scherler wrote: > ... > Passing pipeline parameter as attribute: key=cocoon, value=[FAILED > toString()] > > in MessageFormatter.arrayFormat. > > still investigating > > salu2 > Actually you can see it if you start the cocoon-sample block and request http://localhost:8888/controller/abc/foo?reqparam=1 SLF4J: Failed toString() invocation on an object of type [java.util.HashMap] java.lang.StackOverflowError at java.lang.AbstractStringBuilder.append(AbstractStringBuilder.java:631) at java.lang.StringBuilder.append(StringBuilder.java:224) at org.apache.cocoon.configuration.MutableSettings.toString(MutableSettings.java:312) at java.lang.String.valueOf(String.java:2902) It actually happens in STRenderer public String render(final String template, final Map<String, Object> parameters) throws IOException { final ST stringTemplate = new ST(template, '$', '$'); if (parameters == null || parameters.isEmpty()) { LOG.warn("There are not any parameters passed to the template."); } else { for (Map.Entry<String, Object> entry : parameters.entrySet()) { stringTemplate.add(entry.getKey().replace(".", "_"), (entry.getValue() instanceof String) ? StringEscapeUtils.escapeXml( entry.getValue().toString()) : entry.getValue()); LOG.debug("Passing pipeline parameter as attribute: key={}" + ", value={}", entry.getKey(), entry.getValue()); } } return stringTemplate.render(); } salu2 -- Thorsten Scherler <scherler.at.gmail.com> codeBusters S.L. - web based systems <consulting, training and solutions> http://www.codebusters.es/