For Java, the default value of an array is an empty ArrayList as soon as it is declared as "required" in the enclosing object. In our case, we must reject the null value with the appropriate ...

Hi, I can't reproduce on my side without more context, could you please give us some pieces of information about your current configuration? e.g. index mapping, sample of indexed documents. Thanks ...

This article shows how to use the Apache Commons JXPath component to easily query complex Java object trees for data using the XPath expression language. It covers both basic and advanced features ...