Added support for group:disjunction in deserialization

Change-Id: Ib30ef0225a430e40920c02a42c0850add53dc37e
diff --git a/src/test/java/de/ids_mannheim/korap/query/TestKrillQueryJSON.java b/src/test/java/de/ids_mannheim/korap/query/TestKrillQueryJSON.java
index df00673..4ffbb78 100644
--- a/src/test/java/de/ids_mannheim/korap/query/TestKrillQueryJSON.java
+++ b/src/test/java/de/ids_mannheim/korap/query/TestKrillQueryJSON.java
@@ -32,6 +32,19 @@
         assertTrue(sqwi.isOptional());
     };
 
+    @Test
+    public void queryJSONBsp1Disjunction () throws QueryException {
+        SpanQueryWrapper sqwi = jsonQuery(getClass().getResource(
+                "/queries/bsp1c.jsonld").getFile());
+
+        // There is a repetition in here
+        // ([base=foo]|[base=bar])[base=foobar]
+        assertEquals(
+                sqwi.toQuery().toString(),
+                "spanOr([tokens:base:foo, spanRepetition(spanNext(tokens:base:foo, tokens:base:bar){1,100})])");
+        assertTrue(sqwi.isOptional());
+    };
+
 
     @Test
     public void queryJSONBsp1b () throws QueryException {
diff --git a/src/test/resources/queries/bsp1c.jsonld b/src/test/resources/queries/bsp1c.jsonld
new file mode 100644
index 0000000..7b0b48f
--- /dev/null
+++ b/src/test/resources/queries/bsp1c.jsonld
@@ -0,0 +1,46 @@
+{
+  "@context" : "http://ids-mannheim.de/ns/KorAP/json-ld/v0.1/context.jsonld",
+  "query": {
+    "@type": "koral:group", 
+    "operation": "operation:disjunction",
+    "operands": [
+      {
+	"@type": "koral:token", 
+	"wrap": {
+	  "@type": "koral:term", 
+	  "layer": "base",
+	  "key": "foo"
+	}
+      }, 
+      {
+	"@type": "koral:group", 
+	"min" : 0,
+	"operation": "operation:repetition",
+	"operands": [
+	  {
+	    "@type": "koral:group", 
+	    "operation" : "operation:sequence",
+	    "operands": [
+	      {
+		"@type": "koral:token", 
+		"wrap": {
+		  "@type": "koral:term", 
+		  "key": "foo", 
+		  "layer" : "base"
+		}
+	      },
+	      {
+		"@type": "koral:token", 
+		"wrap": {
+		  "@type": "koral:term",
+		  "layer": "base",
+		  "key" : "bar"
+		}
+	      }
+	    ]
+	  }
+	]
+      }
+    ]
+  }
+}