java中的Neo4j-Cypher-match（）。查找连接的节点

我有如下结构

        firstNode = graphDb.createNode();
        firstNode.setProperty( "person", "Andy " ); 
        Label myLabel = DynamicLabel.label("A");
        firstNode.addLabel(myLabel);
        secondNode = graphDb.createNode();
        secondNode.setProperty( "person", "Bobby" );
        Label myLabel1 = DynamicLabel.label("B");
        secondNode.addLabel(myLabel1);
        ThirdNode = graphDb.createNode();
        ThirdNode.setProperty( "person", "Chris " );
        Label myLabel2 = DynamicLabel.label("C");
        ThirdNode.addLabel(myLabel2);....

        relationship = firstNode.createRelationshipTo( secondNode, RelTypes.emails );
        relationship.setProperty( "relationship", "email " );
        relationship = firstNode.createRelationshipTo( ThirdNode, RelTypes.emails );
        relationship.setProperty( "relationship", "email " );
        relationship = secondNode.createRelationshipTo( ThirdNode, RelTypes.emails );
        relationship.setProperty( "relationship", "email " );
        relationship = secondNode.createRelationshipTo( FourthNode, RelTypes.emails );
        relationship.setProperty( "relationship", "email " );

第一个节点通过关系“emails”链接到第二个和第三个节点。类似地，第二节点连接到第三、第四、第一节点

我希望每个节点的输出如下：secondNode=[firstNode，FouthNode，ThirdNode]，firstNode=[second，third]，third=

我试过这样的方法：

try{
        ExecutionEngine engine = new ExecutionEngine(graphDb);
        ExecutionResult result = engine.execute("MATCH (secondNode{person:'Bobby'})<-[:emails]-(node)RETURN node");

        System.out.println(result.dumpToString());
        tx1.success();
    } 

MATCH (sender:Person)-[:EMAILS]->(receiver) 
RETURN sender,collect(receiver) as receivers

试试看{
ExecutionEngine=新的ExecutionEngine（graphDb）；
ExecutionResult=engine.execute（“匹配（第二个节点{person:'Bobby'））

你的标签应该是：Person而不是：A，：B，：C
您希望按第一个节点进行聚合
您应该使用大写的re-types

试着这样做：

try{
        ExecutionEngine engine = new ExecutionEngine(graphDb);
        ExecutionResult result = engine.execute("MATCH (secondNode{person:'Bobby'})<-[:emails]-(node)RETURN node");

        System.out.println(result.dumpToString());
        tx1.success();
    } 

MATCH (sender:Person)-[:EMAILS]->(receiver) 
RETURN sender,collect(receiver) as receivers

不要创建新的执行引擎使用graphDb.execute！！谢谢。太好了！它工作了。但是我没有指定方向。我已经提出了一个基于此的后续问题。你能检查一下吗？