: Thats what I thought, but I can't add a noarg constructor to my subclass
: as one doesn't exist in the superclass - TextResponseWriter. All I have
: done is create a class that extends TextResponseWriter and implements
: QueryResponseWriter. The only method that is actually implemented is ..
:
: public String getContentType(SolrQueryRequest arg0, SolrQueryResponse arg1) {
: // TODO Auto-generated method stub
: return CONTENT_TYPE_TEXT_UTF8;
: }
: ie the class at the moment, does nothing, but it shouldn't cause an error.
yeah ... actually it should ... there's a couple of things wrong with this
picture... for starters, you must have some other code in your
DojoResponseWriter2 or it wouldn't compile (you need to define the methods
init(NamedList) and write(Writer,SolrQueryRequest,SolrQueryResponse) in
order to satisfy the QueryResponseWriter Interface.
Second: there is some confusion about hte namming of utility classes
related to response writting in Solr. The QueryResponseWriter is what you
have to implement. the TextResponseWriter abstract class is intended to
help you do that ... but you should not attempt to have a single
class subclass TextResponseWriter and implement QueryResponseWriter.
The intent is that each concrete QueryResponseWriter impl will have a
helper class that it constructs instances of in each call to the
QueryResponseWriter.write method. this helper class can maintain state
and be recursive since there will be one instance per response (meanwhile
the instanes of QueryResponseWriter need to be thread safe.
Think of QueryResponseWriter as an interface that your factory must
implement, and TextResponseWriter as a base class you can use for the
objects your factory will produce -- except that you never have to return
the objects you produce, you just have to execute them.
take a loost at the existing JSONResponseWriter as an example ... in
implements QueryResponseWriter but it does not extend TextResponseWriter
-- instead it has an inner class named JSONWriter which extends
TextResponseWriter.
-Hoss
