OrientDB 从 2.0.12 迁移到 2.2.18

Question

我在 2.0.12 中使用下面的 API 获取顶点并且它正在工作

OrientGraphFactory factory = new OrientGraphFactory("remote:172.21.112.228/mydb", "root", "root").setupPool(1,50);
        OrientGraphNoTx graph = factory.getNoTx();
graph.getVertices("Test.name","zyx");

但是使用最新的 2.2.18，当我尝试使用

OrientGraphFactory factory = new OrientGraphFactory("memory:172.21.112.228/mydb", "root", "root").setupPool(1,50);
        OrientGraphNoTx graph = factory.getNoTx();
graph.getVertices("Test.name","zyx");

我低于错误，

Exception in thread "main" java.lang.IllegalArgumentException: 
OClass not found in the schema: Test
    at com.tinkerpop.blueprints.impls.orient.OrientBaseGraph.getVertices(OrientBaseGraph.java:814)
    at test.GetOrientDBData.main(GetOrientDBData.java:57)

Answer 1

尝试以下代码：

OrientGraphFactory factory = new OrientGraphFactory("memory:mydb", 
     "root", "root").setupPool(1,50); 
OrientGraphNoTx graph = factory.getNoTx(); 
if(g.getVertexType("Test") == null){
  g.createVertexType("Test");
}
graph.getVertices("Test.name","zyx");

您的代码有两处更改：

1. 去掉内存中的IP: URL，不用那个

2. 添加了一个检查以确保测试类存在并创建它