g.V().hasLabel("OperatingSystem")
.filter(Lambda.predicate("{it.get().property('name').startsWith('xyz')}")).out("dpend_on")
.as("ast").out("depend_on").hasLabel("abc")
导致错误:
java.util.concurrent.CompletionException:
org.apache.tinkerpop.gremlin.driver.exception.ResponseException:查询解析在第1行失败,字符位置为0,错误消息:输入'['期望{'''','“”','g'}不匹配在java.util.concurrent.CompletableFuture.reportJoin(CompletableFuture.java:375)
在java.util.concurrent.CompletableFuture.join(CompletableFuture.java:1934)
在org.apache.tinkerpop.gremlin.driver.ResultSet.one(ResultSet.java:107)
在org.apache.tinkerpop.gremlin.driver.ResultSet $ 1.hasNext(ResultSet.java:159)
在org.apache.tinkerpop.gremlin.driver.ResultSet $ 1.next(ResultSet.java:166)
在org.apache.tinkerpop.gremlin.driver.ResultSet $ 1.next(ResultSet.java:153)
在org.apache.tinkerpop.gremlin.driver.remote.DriverRemoteTraversal $ TraverserIterator.next(DriverRemoteTraversal.java:142)
在org.apache.tinkerpop.gremlin.driver.remote.DriverRemoteTraversal $ TraverserIterator.next(DriverRemoteTraversal.java:127)
在org.apache.tinkerpop.gremlin.driver.remote.DriverRemoteTraversal.nextTraverser(DriverRemoteTraversal.java:108)
在org.apache.tinkerpop.gremlin.process.remote.traversal.step.map.RemoteStep.processNextStart(RemoteStep.java:80)
在org.apache.tinkerpop.gremlin.process.traversal.step.util.AbstractStep.next(AbstractStep.java:128)
在org.apache.tinkerpop.gremlin.process.traversal.step.util.AbstractStep.next(AbstractStep.java:38)
org.apache.tinkerpop.gremlin.process.traversal.util.DefaultTraversal.next(DefaultTraversal.java:200)
答案 0 :(得分:1)
我刚刚看到您正在使用Amazon Neptune。根据以下文档,海王星不支持Lambda步骤:https://docs.aws.amazon.com/neptune/latest/userguide/access-graph-gremlin-differences.html