refactoring;
metaquery for json-ld "meta" part;
diff --git a/src/main/java/de/ids_mannheim/korap/query/serialize/CollectionQuery.java b/src/main/java/de/ids_mannheim/korap/query/serialize/CollectionQuery.java
index ed1d5ef..296f905 100644
--- a/src/main/java/de/ids_mannheim/korap/query/serialize/CollectionQuery.java
+++ b/src/main/java/de/ids_mannheim/korap/query/serialize/CollectionQuery.java
@@ -18,7 +18,7 @@
 public class CollectionQuery {
 
     private JsonFactory factory;
-    private MetaTypes types;
+    private CollectionsTypes types;
     private ObjectMapper serialzer;
     private List<Map> rq;
     private List<Map> mfil;
@@ -30,7 +30,7 @@
         this.mfil = new ArrayList<>();
         this.mext = new ArrayList<>();
         this.factory = serialzer.getFactory();
-        this.types = new MetaTypes();
+        this.types = new CollectionsTypes();
     }
 
     public CollectionQuery addResource(String query) {
@@ -203,22 +203,18 @@
      * @return
      */
     public String stringify() {
-        List meta = getCollectionsOnly();
-        if (meta.isEmpty())
+        List collection = getCollectionsOnly();
+        if (collection.isEmpty())
             return "";
 
         try {
-            return serialzer.writeValueAsString(meta);
+            return serialzer.writeValueAsString(collection);
         } catch (JsonProcessingException e) {
             e.printStackTrace();
             return "";
         }
     }
 
-    public JsonNode jsonify() {
-        return serialzer.valueToTree(join());
-    }
-
     /**
      * returns the List<Map> that contains all the meta queries and resource queries
      * added to the meta query container
diff --git a/src/main/java/de/ids_mannheim/korap/query/serialize/MetaTypes.java b/src/main/java/de/ids_mannheim/korap/query/serialize/CollectionsTypes.java
similarity index 97%
rename from src/main/java/de/ids_mannheim/korap/query/serialize/MetaTypes.java
rename to src/main/java/de/ids_mannheim/korap/query/serialize/CollectionsTypes.java
index 1a3b07b..c75f059 100644
--- a/src/main/java/de/ids_mannheim/korap/query/serialize/MetaTypes.java
+++ b/src/main/java/de/ids_mannheim/korap/query/serialize/CollectionsTypes.java
@@ -14,11 +14,11 @@
  * @author hanl
  * @date 04/12/2013
  */
-public class MetaTypes {
+public class CollectionsTypes {
 
     private ObjectMapper mapper;
 
-    public MetaTypes() {
+    public CollectionsTypes() {
         this.mapper = new ObjectMapper();
     }
 
diff --git a/src/main/java/de/ids_mannheim/korap/query/serialize/MetaQuery.java b/src/main/java/de/ids_mannheim/korap/query/serialize/MetaQuery.java
new file mode 100644
index 0000000..caf7154
--- /dev/null
+++ b/src/main/java/de/ids_mannheim/korap/query/serialize/MetaQuery.java
@@ -0,0 +1,51 @@
+package de.ids_mannheim.korap.query.serialize;
+
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.ObjectMapper;
+
+import java.util.HashMap;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * @author hanl
+ * @date 07/02/2014
+ */
+public class MetaQuery {
+
+    private ObjectMapper serialier;
+    private Map meta;
+
+    public MetaQuery() {
+        this.serialier = new ObjectMapper();
+        meta = new HashMap();
+    }
+
+    public MetaQuery addContext(Object left, Object right, String type) {
+        Map map = new HashMap();
+        List l = new LinkedList();
+        List r = new LinkedList();
+        l.add(type);
+        l.add(left);
+        map.put("left", l);
+        r.add(type);
+        r.add(right);
+        map.put("right", r);
+        meta.put("context", map);
+        return this;
+    }
+
+    public MetaQuery addEntry(String name, Object value) {
+        meta.put(name, value);
+        return this;
+    }
+
+    public String toMeta() {
+        try {
+            return serialier.writeValueAsString(meta);
+        } catch (JsonProcessingException e) {
+            return "";
+        }
+    }
+}