Best way to understand Query result type

On Thu, Sep 11, 2014 at 11:07 AM, Marco Lettere <marco.lettere at dedalus.eu> wrote: > Hello all, > I'm in the situation where I'd have to execute an XQuery on a different > Server from an external Java code (check the small example provided). > What is the best way of transforming the resulting bytestream into BaseX' > Value model (item()*, node()*, xs:string* whatever is returned by the query) > in order to be able to treat the result as if it was generated inside the > calling XQuery itself? > Would the HTTPClient that ships with Basex be of any help? Or do I have to > do everything manually? > > I hope the question is stated clearly enough anyway here is a short example > (probably not working directly ;-)) that demonstrates the concept. > > declare namesapce ext = "my.externalClass.EC"; > > let $out := ext:eval("http://otherhost:8984/rest" "{1 to 10 ! <a/>}") > return <total count={count($out)}> > {$out} > </total> > > EC has few methods most importantly: > > private String queryToXML(String query){ > return > "<query xmlns=\"http://basex.org/rest\">" + > "<text><![CDATA[" + query + "]]></text>" + > "</query>"; > } > > public static void eval(String address, String query) { > try { > > URL url = new URL(address); > HttpURLConnection conn = > (HttpURLConnection)url.openConnection(); > conn.setRequestMethod("POST"); > conn.setDoOutput(true); > conn.getOutputStream().write(this.query.getBytes()); > > ByteArrayOutputStream baos = new ByteArrayOutputStream(); > InputStream is = conn.getInputStream(); > byte[] buf = new byte[1024]; > int len = is.read(buf,0,buf.length); > while(len != -1){ > baos.write(buf, 0, len); > len = is.read(buf,0,buf.length); > } > is.close(); > byte[] = baos.toByteArray(); > baos.close(); > } catch (Exception e) { > result = e; > } > } > > The Question translates to what should eval's return type be and how to > generate it from ByteArrayOutputStream. > > Thank you. > M. >