Extend the ListBuilder to support selecting the DataType(s)

Change-Id: I1c4c2c7446fa4a22dc1533055ed7abe626abfd44

Author: msomhorst

subprojects/client/src/integrationTest/groovy/com/bol/openapi/OpenApiClientIntegrationSpec.groovy

@@ -119,4 +119,26 @@ class OpenApiClientIntegrationSpec extends Specification {
         results.categories.size() == 0
         results.refinementGroups.size() == 0
     }
+
+    def 'Can get list of categories'() {
+        def results = OpenApiClient.withDefaultClient(apiKey).listBuilder().dataType(QueryDataType.DataType.CATEGORIES)
+                .list()
+
+        expect:
+        results.totalResultSize > 0
+        results.products.size() == 0
+        results.categories.size() > 0
+        results.refinementGroups.size() == 0
+    }
+
+    def 'Can get list of products and refinements'() {
+        def results = OpenApiClient.withDefaultClient(apiKey).listBuilder().dataType(QueryDataType.DataType.PRODUCTS).dataType(QueryDataType.DataType.REFINEMENTS)
+                .list()
+
+        expect:
+        results.totalResultSize > 0
+        results.products.size() > 0
+        results.categories.size() == 0
+        results.refinementGroups.size() > 0
+    }
 }

subprojects/client/src/main/java/com/bol/openapi/ListBuilder.java

@@ -67,6 +67,11 @@ public ListBuilder category(String id) {
         return new ListBuilder(this);
     }
 
+    public ListBuilder dataType(QueryDataType.DataType dataType) {
+        dataTypes.add(dataType);
+        return new ListBuilder(this);
+    }
+
     public ListBuilder allOffers() {
         offerTypes.add(ALL);
         return new ListBuilder(this);