zorba-coders team mailing list archive

[Till Westmann <till.westmann@xxxxxxxxxx>]

Till Westmann has proposed merging lp:~zorba-coders/zorba/bug-1057792-serialize-nested-xdm-nodes into lp:zorba.

Commit message:
serialize nested XDM nodes as XML for the json-xml-hybrid method

Requested reviews:
  Till Westmann (tillw)
  Ghislain Fourny (gislenius)
Related bugs:
  Bug #1057792 in Zorba: "serialization of XDM nodes nested within JDM nodes"
  https://bugs.launchpad.net/zorba/+bug/1057792

For more details, see:
https://code.launchpad.net/~zorba-coders/zorba/bug-1057792-serialize-nested-xdm-nodes/+merge/126833

serialize nested XDM nodes as XML for the json-xml-hybrid method
-- 
https://code.launchpad.net/~zorba-coders/zorba/bug-1057792-serialize-nested-xdm-nodes/+merge/126833
Your team Zorba Coders is subscribed to branch lp:zorba.

=== modified file 'src/api/serialization/serializer.cpp'
--- src/api/serialization/serializer.cpp	2012-09-21 04:09:29 +0000
+++ src/api/serialization/serializer.cpp	2012-09-28 00:14:39 +0000
@@ -956,14 +956,12 @@
   serializer* the_serializer,
   std::ostream& the_stream)
   : emitter(the_serializer, the_stream),
-    theXMLStringStream(nullptr),
     theMultipleItems(false)
 {
 }
 
 serializer::json_emitter::~json_emitter()
 {
-  delete theXMLStringStream;
 }
 
 void serializer::json_emitter::emit_item(store::Item *item)
@@ -1117,26 +1115,9 @@
 /*******************************************************************************
 
 ********************************************************************************/
-void serializer::json_emitter::emit_jsoniq_xdm_node(
-    store::Item* item,
-    int)
+void serializer::json_emitter::emit_jsoniq_xdm_node(store::Item*, int)
 {
-  if (true) {
-    // It could be useful to have some form of serialization of nested XML nodes
-    // (if only for debugging purposes). However as this is not (yet?) specified
-    // we throw an error here.
-    throw XQUERY_EXCEPTION(jerr::JNSE0014);
-  }
-  if (!theXMLEmitter) {
-    theXMLStringStream = new std::stringstream();
-    ser->attach_transcoder(*theXMLStringStream);
-    theXMLEmitter = new serializer::xml_emitter(ser, *theXMLStringStream);
-  }
-  theXMLEmitter->emit_item(item);
-  zstring xml(theXMLStringStream->str());
-  theXMLStringStream->str("");
-
-  emit_json_string(xml);
+  throw XQUERY_EXCEPTION(jerr::JNSE0014);
 }
 
 
@@ -1159,18 +1140,17 @@
   serializer* the_serializer,
   std::ostream& the_stream,
   bool aEmitAttributes)
-  :
-    emitter(the_serializer, the_stream),
+  : json_emitter(the_serializer, the_stream),
     theEmitterState(JESTATE_UNDETERMINED),
     theXMLEmitter(new xml_emitter(the_serializer, the_stream, aEmitAttributes)),
-    theJSONEmitter(new json_emitter(the_serializer, the_stream))
+    theNestedXMLStringStream(nullptr)
 {
 }
 
 serializer::hybrid_emitter::~hybrid_emitter()
 {
+  delete theNestedXMLStringStream;
   delete theXMLEmitter;
-  delete theJSONEmitter;
 }
 
 void serializer::hybrid_emitter::emit_declaration()
@@ -1181,7 +1161,7 @@
 {
   if (item->isJSONItem()) {
     theEmitterState = JESTATE_JDM;
-    theJSONEmitter->emit_item(item);
+    json_emitter::emit_item(item);
   }
   else {
     if (theEmitterState == JESTATE_UNDETERMINED) {
@@ -1197,7 +1177,7 @@
   switch(theEmitterState)
   {
     case JESTATE_JDM:
-      theJSONEmitter->emit_end();
+      json_emitter::emit_end();
       return;
     case JESTATE_XDM:
     default:
@@ -1205,6 +1185,22 @@
   }
 }
 
+void serializer::hybrid_emitter::emit_jsoniq_xdm_node(
+    store::Item* item,
+    int)
+{
+  if (! theNestedXMLEmitter) {
+    theNestedXMLStringStream = new std::stringstream();
+    ser->attach_transcoder(*theNestedXMLStringStream);
+    theNestedXMLEmitter
+        = new serializer::xml_emitter(ser, *theNestedXMLStringStream);
+  }
+  theNestedXMLEmitter->emit_item(item);
+  zstring xml(theNestedXMLStringStream->str());
+  theNestedXMLStringStream->str("");
+
+  emit_json_string(xml);
+}
 
 #endif /* ZORBA_WITH_JSON */
 

=== modified file 'src/api/serialization/serializer.h'
--- src/api/serialization/serializer.h	2012-09-20 04:54:07 +0000
+++ src/api/serialization/serializer.h	2012-09-28 00:14:39 +0000
@@ -385,32 +385,28 @@
 
     virtual void emit_end();
 
-  private:
+  protected:
 
     /**
      * Outputs a JSON item. This method is called both for top-level JSON
      * items as well as any items within a JSON object or array, so it may
      * output simple typed values differently than standard XML serialization.
      */
-    void emit_json_item(store::Item* item, int depth);
-
-    void emit_json_object(store::Item* object, int depth);
-
-    void emit_json_array(store::Item* array, int depth);
-
-    void emit_json_value(store::Item* value, int depth);
-
-    void emit_jsoniq_xdm_node(store::Item *item, int depth);
-
-    void emit_json_string(zstring const &string);
+    virtual void emit_json_item(store::Item* item, int depth);
+
+    virtual void emit_json_object(store::Item* object, int depth);
+
+    virtual void emit_json_array(store::Item* array, int depth);
+
+    virtual void emit_jsoniq_xdm_node(store::Item *item, int depth);
+
+    virtual void emit_json_string(zstring const &string);
 
     store::Item_t theJSONiqValueName;
     store::Item_t theTypeName;
     store::Item_t theValueName;
     store::Item_t theJSONiqXDMNodeName;
 
-    rchandle<emitter> theXMLEmitter;
-    std::stringstream* theXMLStringStream;
     bool theMultipleItems;
   };
 
@@ -421,7 +417,7 @@
   //                                                       //
   ///////////////////////////////////////////////////////////
 
-  class hybrid_emitter : public emitter
+  class hybrid_emitter : public json_emitter
   {
   public:
     hybrid_emitter(
@@ -437,15 +433,20 @@
 
     virtual void emit_end();
 
+  protected:
+    virtual void emit_jsoniq_xdm_node(store::Item* item, int);
+
   private:
     enum JSONiqEmitterState {
       JESTATE_UNDETERMINED,
       JESTATE_JDM,
       JESTATE_XDM
-    }                           theEmitterState;
-
-    serializer::xml_emitter*        theXMLEmitter;
-    serializer::json_emitter*       theJSONEmitter;
+    }                        theEmitterState;
+
+    serializer::xml_emitter* theXMLEmitter;
+
+    rchandle<emitter> theNestedXMLEmitter;
+    std::stringstream* theNestedXMLStringStream;
   };
 
 #endif /* ZORBA_WITH_JSON */

=== added file 'test/rbkt/ExpQueryResults/zorba/jsoniq/serializer-nested-xml_01.xml.res'
--- test/rbkt/ExpQueryResults/zorba/jsoniq/serializer-nested-xml_01.xml.res	1970-01-01 00:00:00 +0000
+++ test/rbkt/ExpQueryResults/zorba/jsoniq/serializer-nested-xml_01.xml.res	2012-09-28 00:14:39 +0000
@@ -0,0 +1,1 @@
+{ "a" : "<a b=\"c\"><!--comment--><?target pi?></a>" }

=== added file 'test/rbkt/Queries/zorba/jsoniq/serializer-nested-xml_01.xq'
--- test/rbkt/Queries/zorba/jsoniq/serializer-nested-xml_01.xq	1970-01-01 00:00:00 +0000
+++ test/rbkt/Queries/zorba/jsoniq/serializer-nested-xml_01.xq	2012-09-28 00:14:39 +0000
@@ -0,0 +1,1 @@
+{ "a" : <a b="c">{ comment { "comment" }, processing-instruction target { "pi" } }</a> }

=== added file 'test/rbkt/Queries/zorba/jsoniq/serializer-nested-xml_02.spec'
--- test/rbkt/Queries/zorba/jsoniq/serializer-nested-xml_02.spec	1970-01-01 00:00:00 +0000
+++ test/rbkt/Queries/zorba/jsoniq/serializer-nested-xml_02.spec	2012-09-28 00:14:39 +0000
@@ -0,0 +1,2 @@
+Serialization: method=json
+Error: http://jsoniq.org/errors:JNSE0014

=== added file 'test/rbkt/Queries/zorba/jsoniq/serializer-nested-xml_02.xq'
--- test/rbkt/Queries/zorba/jsoniq/serializer-nested-xml_02.xq	1970-01-01 00:00:00 +0000
+++ test/rbkt/Queries/zorba/jsoniq/serializer-nested-xml_02.xq	2012-09-28 00:14:39 +0000
@@ -0,0 +1,1 @@
+{ "a" : <a b="c">{ comment { "comment" }, processing-instruction target { "pi" } }</a> }