DEVX-714: adding graphQLOrders function and graphQLAllOrders example

Author: ShipilA

commercetools/commercetools-graphql-api/src/main/java/com/commercetools/graphql/api/ByProjectKeyGraphqlQuery.java

@@ -8,7 +8,11 @@
 import java.util.concurrent.CompletableFuture;
 
 import com.commercetools.api.client.ErrorableTrait;
+import com.commercetools.graphql.CommercetoolsTestUtils;
 
+import com.commercetools.api.client.ProjectApiRoot;
+import com.commercetools.graphql.api.types.Order;
+import com.commercetools.graphql.api.types.OrderQueryResult;
 import io.vrap.rmf.base.client.*;
 
 import org.apache.commons.lang3.builder.EqualsBuilder;
@@ -73,6 +77,29 @@ public CompletableFuture<ApiHttpResponse<GraphQLResponse<T>>> execute(final ApiH
                 .withBody(graphQLDataResponse -> GraphQLResponse.of(response.getBody(), graphQLRequest)));
     }
 
+    public List<Order> graphQLOrders(int limit) {
+        final ProjectApiRoot projectRoot = CommercetoolsTestUtils.getProjectApiRoot();
+        List<com.commercetools.graphql.api.types.Order> allOrders = new ArrayList<>();
+        boolean limitNotReached = true;
+        String lastId = null;
+        while (limitNotReached) {
+            GraphQLRequestBuilder<OrderQueryResult> orderBuilder = GraphQL.query(
+                    "query { orders { results { id, version } } }").dataMapper(GraphQLData::getOrders);
+
+            if (lastId != null)
+                orderBuilder.variables(builder -> builder.addValue("where", "id > lastId"));
+
+            var result = projectRoot.graphql().query(orderBuilder.build()).executeBlocking();
+            var orders = result.getBody().getData().getResults();
+            allOrders.addAll(orders);
+            var length = orders.size();
+            lastId = result.getBody().getData().getResults().get(length - 1).getId();
+
+            limitNotReached = length >= limit;
+        }
+        return allOrders;
+    }
+
     public String getProjectKey() {
         return this.projectKey;
     }

commercetools/internal-docs/src/test/java/example/ExamplesTest.java

@@ -35,6 +35,11 @@
 import com.commercetools.api.models.product_type.AttributeLocalizedEnumValue;
 import com.commercetools.api.models.project.Project;
 import com.commercetools.api.models.tax_category.TaxCategoryPagedQueryResponse;
+import com.commercetools.graphql.CommercetoolsTestUtils;
+import com.commercetools.graphql.api.GraphQL;
+import com.commercetools.graphql.api.GraphQLData;
+import com.commercetools.graphql.api.GraphQLRequestBuilder;
+import com.commercetools.graphql.api.types.OrderQueryResult;
 import com.commercetools.http.apachehttp.CtApacheHttpClient;
 import com.commercetools.http.javanet.CtJavaNetHttpClient;
 import com.commercetools.http.netty.CtNettyHttpClient;
@@ -379,6 +384,27 @@ public void queryAll() {
                 .join();
     }
 
+    public void graphQLAllOrders() {
+        final ProjectApiRoot projectRoot = CommercetoolsTestUtils.getProjectApiRoot();
+        boolean limitNotReached = true;
+        int limit = 10;
+        String lastId = null;
+        while (limitNotReached) {
+            GraphQLRequestBuilder<OrderQueryResult> orderBuilder = GraphQL.query(
+                    "query { orders { results { id, version } } }").dataMapper(GraphQLData::getOrders);
+
+            if (lastId != null)
+                orderBuilder.variables(builder -> builder.addValue("where", "id > lastId"));
+
+            var result = projectRoot.graphql().query(orderBuilder.build()).executeBlocking();
+            var orders = result.getBody().getData().getResults();
+            var length = orders.size();
+            lastId = result.getBody().getData().getResults().get(length - 1).getId();
+
+            limitNotReached = length >= limit;
+        }
+    }
+
     public void middleware() {
         ProjectApiRoot apiRoot = ApiRootBuilder.of()
                 .defaultClient(ClientCredentials.of()