fix: core test

apache · Jan 11, 2022 · 6d47fd2 · 6d47fd2
1 parent 8493aff
commit 6d47fd2
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/hugegraph-core/src/main/java/com/baidu/hugegraph/traversal/optimize/TraversalUtil.java b/hugegraph-core/src/main/java/com/baidu/hugegraph/traversal/optimize/TraversalUtil.java
@@ -30,6 +30,7 @@
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 
+import com.google.common.collect.Collections2;
 import org.apache.tinkerpop.gremlin.process.traversal.Compare;
 import org.apache.tinkerpop.gremlin.process.traversal.Contains;
 import org.apache.tinkerpop.gremlin.process.traversal.Order;
@@ -571,6 +572,9 @@ public static void convAllHasSteps(Traversal.Admin<?, ?> traversal) {
         List<HasStep> steps =
                       TraversalHelper.getStepsOfAssignableClassRecursively(
                       HasStep.class, traversal);
+        if (steps.isEmpty() || !traversal.getGraph().isPresent()) {
+            return;
+        }
         HugeGraph graph = (HugeGraph) traversal.getGraph().get();
         for (HasStep<?> step : steps) {
             TraversalUtil.convHasStep(graph, step);